JPH087921B2 - Cassette type tape recorder - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette tape recorder such as a car stereo or other audio tape recorder or a video tape recorder using a tape cassette such as a compact cassette, a micro cassette and a video cassette. It is a thing.

Background Art and its Problems Conventionally, in this type of cassette tape recorder, (a), the tape cassette is set in a standby mode (so-called stop mode) in a loading completed state in advance, and then it can be remotely operated. Alternatively, (b), there is a type in which a loading-dedicated motor is provided in addition to the capstan driving motor to enable remote operation including loading of the tape cassette.

However, in the former case (a), it is necessary to make the loading completed in advance, and once the tape cassette is ejected, there is a disadvantage that the remote operation cannot be performed anymore. On the other hand, in the latter case (b), there is a disadvantage that the number of motors is increased by at least one so that it cannot be made compact.

SUMMARY OF THE INVENTION The present invention has been invented in view of the above point, and can be made compact, and remote operation including loading of a tape cassette can be easily realized and can be performed once. The present invention provides a cassette type tape recorder that can be used for tape running such as playback including loading and is convenient for remote operation.

Means for Solving the Problems A cassette type tape recorder of the present invention for achieving the above object is: (a) a tape cassette inserted at a cassette insertion/removal position where the tape cassette can be inserted/removed, When going forward,
The tape cassette is pulled in the horizontal and vertical directions to be mounted in the cassette mounting position, and at the time of returning, the tape cassette mounted in the cassette mounting position is returned in the vertical direction and the horizontal direction and is held in the cassette insertion/removal position. (B) a capstan drive motor for driving the capstan, and forward rotation of the cassette retractor mounting/discharging mechanism, and reverse rotation driving. The capstan drive motor that operates to return the cassette pull-in/out mechanism, (c) the tape cassette is in the cassette insertion/removal position that is engaged with the cassette pull-in/out mechanism (D), reproduction by remote control in a state in which the detection means detects that the tape cassette is in the cassette insertion/removal position in which the tape cassette loading/ejecting mechanism is engaged. And a control circuit for driving the capstan drive motor in a forward direction by operating a tape running operation switch such as the above, and the control circuit drives the capstan drive motor in a reverse rotation direction by operating an eject operation switch. It is configured to obtain.

According to the cassette type tape recorder of the present invention configured as described above, the tape cassette is inserted into the cassette insertion/removal position where the tape cassette can be inserted/removed, and is engaged with the cassette retraction/ejection mechanism and the tape cassette. In the state where the detecting means detects that the cassette is in the cassette insertion/removal position, the control circuit drives the capstan drive motor in the forward rotation direction by the operation of the tape running operation switch such as the reproduction by the remote operation, and the cassette is driven. By driving the pull-in/load-out mechanism forward, the tape cassette can be automatically pulled in the horizontal and vertical directions and mounted in the cassette mounting position. In addition, if the ejector operation switch is operated by remote control while the cassette is loaded, the control circuit drives the capstan drive motor in the reverse direction to drive the cassette retraction/ejection mechanism back to the tape cassette loading position. Automatically in the vertical direction and the horizontal direction, and can be held in the cassette insertion/removal position.

Embodiment An embodiment in which the present invention is applied to a car stereo (auto reverse machine) will be described below with reference to the drawings.

[Structure description of cassette retracting/mounting mechanism consisting of cassette lifting mechanism and automatic retracting mechanism]

First, in FIGS. 1A to 2C, (1) is a tape cassette which is a compact cassette, (2) is a cassette holder for loading the tape cassette, and (3) is a mechanical substrate. It should be noted that this car stereo is configured as an auto-reverse machine, and a pair of capstans (4) and (5) are provided on a mechanical substrate (3), and a pair of pinch rollers (6) with an automatic crimping mechanism facing each other. (7), magnetic head with azimuth automatic adjustment mechanism (8), pair of reel shafts (9)
(10) One capstan drive motor (11) and the like are mounted in appropriate arrangements. In addition, this car stereo is composed of a one-motor system, and in addition to the capstan drive by the motor (11), it drives all the operation switching mechanisms described later, such as reel base driving, pinch roller crimping mechanism driving, and azimuth automatic adjusting mechanism driving. It is configured so that all the driving is also performed.

Next, insert the cassette holder (2) into the cassette insertion position (elevated position) of the tape cassette (1) shown in FIG. 2A.
The cassette elevating mechanism (14) for elevating the tape cassette (1) shown in FIG. 2C between the cassette mounting position (lowering position) is shown in FIGS. 1A to 2C. The cassette elevating mechanism (14) has an elevating drive frame (15), and the elevating drive frame (15) is a sub-board (16) erected and fixed at an upper predetermined position on one end side of the mechanical board (3). Are mounted so as to be swingable up and down via a pair of fulcrum shafts (17) which are horizontally arranged on the same axis. A cassette holder (2) is rotatably supported by a hinge structure (23) at a lower portion of a tip portion (15a) of the lifting drive frame (15). A guided pin (18) fixed horizontally to one side of the cassette holder (2) is provided on a guide plate (19) vertically erected on one side of the mechanical board (3). It is configured to be inserted and guided in the vertical guide groove (20). The elevating drive frame (15) is oscillated by a spring described later in the direction of arrow a in FIG. 2A, whereby the cassette holder (2) is moved to the tape cassette (shown in FIG. 2A). It is urged to move to the cassette insertion position (raised position) in 1). As shown in FIGS. 1A and 2A, the cassette holder (2) has an upper end of a height regulating plate portion (21) having a substantially L-shape that is vertically erected on one side of the mechanical substrate (3). It abuts against (21a) and is restricted to the raised position.

On the other hand, the tape cassette (1) is constructed so as to be inserted into the cassette holder (2) from the longitudinal direction thereof in the direction of arrow b in FIGS. 1A and 2A and held in the cassette holder (2). There is. At this time, a leaf spring (22) which elastically presses one side of the tape cassette (1) inserted in the cassette holder (2) to give an appropriate friction locking force to the tape cassette (1) is used. Holder (2)
It is fixed to one side.

Next, as shown in FIGS. 1A to 2C, a cassette retracting member (25) is attached to the central portion of the upper horizontal plate portion (16a) of the sub-board (16). The cassette retracting member (25) is slidable horizontally along a guide groove (26) provided along the horizontal plate portion (16a) in a direction parallel to the arrow a direction which is the cassette inserting direction. It is configured. The cassette pull-in member (25) is made of, for example, a synthetic resin molding, and has a tip end engaged with one of a pair of reel shaft insertion holes (27) of the tape cassette (1). Joint part (28) is provided integrally,
An abutting portion (29) with which the tape cassette (1) abuts is integrally provided on the lower surface on the rear end side. Further, at the tip of the upper horizontal plate portion (16a), a cassette pulling member (2
A leaf spring (30) that elastically presses the tip of (5) downward is fixed.

Next, an automatic pulling mechanism (33) for automatically pulling the tape cassette (1) into the cassette holder (2) by driving the cassette pulling member (25) is shown in FIGS. 3A to 5A. It is shown. The automatic retraction mechanism (33) has a retraction operation lever (34), a retraction drive lever (35), and a switch operation lever (36). The pull-in operation lever (34) and the pull-in drive lever (35) are respectively rotatable on a vertical fulcrum shaft (37) fixed on the upper horizontal plate portion (16a) of the sub-board (16). The switch operation lever (36) is pivotally supported and is vertically stacked, and the switch operation lever (36) is rotatably mounted on the upper horizontal plate portion (16a) of the sub-board (16) via the fulcrum shaft (38). .. At this time, both fulcrum shafts (37) and (38) are arranged on both sides of the guide groove (26), and the tips of the pull-in operation lever (34) and the switch operation lever (36) are located above the guide groove (26). HoV at the position
It intersects in a letter shape and is stacked vertically. A pair of elongated holes (39) (40) formed at the tip ends of both levers (34) (36) intersect each other at some of these, and the cassette retracting member ( 25) A pin (41) integrally provided on the upper surface of the rear end portion is inserted in common. The fulcrum shaft (3) of the switch operating lever (36)
A switch operation cam (42) is integrally provided on the periphery of 8), and a cassette is provided on the upper horizontal plate part (16a) of the sub-board (16) near the switch operation cam (42). A detection switch (43) is attached. The switch operation cam (42) is connected to the operated element (4) of the switch (43).
4) is configured to rotate. The operated element (44) has a built-in return spring (not shown) to
It is urged to rotate in the direction of arrow c in the figure.

Next, as shown in FIGS. 4 and 5, on the mechanical substrate (3) below the pull-in drive lever (35), there is a cam grooved gear (47) in the operation switching mechanism which will be described later. It is rotatably arranged at a position eccentric with respect to the fulcrum shaft (37), and its gear with cam groove (47) is driven by the motor (11) to rotate forward and backward as described later. It is configured. A substantially spiral first cam groove (48) is provided on the upper surface of the gear with cam groove (47). An engaging element (49), which is a roller rotatably supported on the lower part of the pull-in drive lever (35), is provided in the lower horizontal plate part (16b) of the sub-board (16) to form an arc hole ( 50) and is engaged in the cam groove (48), and the cam grooved gear (4
The cam groove (48) by the forward or reverse rotation drive of 7).
Thus, the pull-in drive lever (35) is configured to be rotationally driven in the direction of arrow d or d'in FIG. 3A via the engaging element (49). A return spring (52) is interposed between the pull-in operation lever (34) and the pull-in drive lever (35). The return spring (52) is composed of a torsion spring and is fitted onto the outer periphery of the fulcrum shaft (37) by its coil portion (52a), and both ends (52b) (52c) of the return spring (52). ) And the pull-in drive lever (35) are respectively brought into contact with protrusions (53) (54) integrally provided with the lever (35). Then, the pulling operation lever (34) is biased by the turning biasing force of the return spring (52) in the direction of arrow d'in FIG. 3A with respect to the pulling drive lever (35), as shown in FIG. 3A. The protrusion (5) provided integrally with the pull-in operation lever (34)
5) is brought into contact with the projection (56) provided integrally with the pull-in drive lever (35) to restrict the rotation in the direction of the arrow d'. The pull-in drive lever (35) has its engaging element (4
9) is engaged in the first cam groove (48) of the gear with cam groove (47), so that it is regulated at a position according to the rotation of the gear with cam groove (47). There is.

Next, FIGS. 6 to 8C show a locking mechanism (59) for locking the cassette retracting member (25) during the forward movement. The locking mechanism (59) has a locking plate (60), and the locking plate (60) is the interlocking member interlocking with the cassette retracting member (25).
6) is configured to lock. At this time, an engaged member (61) consisting of a pin fixed to the lower part of the switch operation cam (42) of the switch operation lever (36) is provided on the upper horizontal plate part (16a) of the sub-board (16). The circular arc hole (62) is inserted to project downward.

On the other hand, the lock plate (60) is a member for locking the engaged element (61), and is arranged below the upper horizontal plate portion (16a). The lock plate (60) is provided with a through hole (63) provided at one end thereof so that the upper horizontal plate (16
It is inserted through a fulcrum shaft (64) fixed vertically to the lower part of a). Further, the protrusion (65) integrally provided on one end side of the lock plate (60) is connected to the vertical plate part (16c) connecting the upper and lower horizontal plate parts (16a) (16b) of the sub-board (16). It is loosely fitted in the wide elongated hole (66) provided. A return spring (67) composed of a torsion spring is provided on the outer periphery of the fulcrum shaft (64) below the lock plate (60) and has a coil portion (67a).
The return spring (67) has both ends (67b) and (67c) attached to the lock plate (60) integrally with the projection (69). And the one side edge (66a) of the wide elongated hole (66). By the way, the lock plate (60) is rotatable in the horizontal plane around the axis of the fulcrum shaft (64), and its fulcrum shaft (64) side is in the vertical plane parallel to the axis of the fulcrum shaft (64). It is configured to be vertically rotatable about its center. Then, the locking plate (60) is urged to rotate horizontally in the direction of arrow e in FIG. 7A about the fulcrum shaft (64) as a rotation center by the torsional force of both ends (67b) (67c) of the return spring (67). Together with the coil part (67) of the return spring (67).
By the compressive repulsive force of a), the fulcrum shaft (64) side is pivotally biased vertically in the direction of arrow f in FIG.
At this time, as shown in FIG. 7A, the protrusion (65) is formed into a wide elongated hole (6
6) is abutted against the other end edge (66b) of the lock plate (60) to restrict the rotation of the lock plate (60) in the direction of the arrow e, and integrally with the lower surface of the upper horizontal plate portion (16a) as shown in FIG. 8A. The lock plate (60) is brought into contact with the lower surface of the provided downward convex portion (70) to restrict the rotation of the lock plate (60) in the arrow f direction.

As described above, the lock plate (60) attached to the sub-board (16) and the engaged member (61) fixed to the lower part of the switch operating lever (36) are shown in FIGS. 7A and 8A. Have a positional relationship. The engaged member (61) is configured to move relative to the lock plate (60) along an arcuate locus g around the fulcrum shaft (64) as a rotation center. On the other hand, on one side edge side (upper side in FIG. 7A) of the locking plate (60), from the tip of the locking plate (60) to the fulcrum shaft (64).
The inclined surface (71), the engaging portion (72), and the inclined piece (73) toward the side
Are sequentially and integrally provided.

[Explanation of the operation of the cassette retracting mounting/discharging mechanism (cassette lifting mechanism and automatic retracting mechanism)] Next, the operation of the cassette retracting mounting/discharging mechanism comprising the cassette lifting mechanism (14) and the automatic retracting mechanism (33) configured as described above. Will be described with reference to FIGS. 1A to 8C.

[Automatic pull-in operation of tape cassette]

First, when the tape cassette (1) is completely ejected, the cassette holder (2) is returned to the cassette insertion position of the tape cassette (1) shown in FIG. 2A. Further, the cassette retracting member (25) is moved back at the returning positions shown by solid lines in FIGS. 1A, 2A and 3A, respectively. In the state where the eject operation is completed, the engaged element (61) of the switch operating lever (36) is in the state shown in FIGS. 7A and 8A with respect to the lock plate (60), and the cassette detection switch (43) is It is turned off.

Next, in the tape cassette holder (2), see Figures 1A and 2A.
Although the tape cassette (1) is inserted from the direction of the arrow b in the figure, when the tape cassette (1) is inserted to a certain extent, one end of the tape cassette (1) is inserted into the cassette pull-in member (25) as shown by the solid line in FIG. 2A. The abutment portion (29) is abutted. At this time, immediately before one end of the tape cassette (1) is brought into contact with the contact portion (29), the engaging portion (28) at the tip of the cassette retracting member (25) has its own elasticity and leaf spring ( The tape cassette (1) is automatically engaged in the reel shaft insertion hole (27) on the upper side of one end of the tape cassette (1) against the elasticity of the tape cassette (30).

On the other hand, after one end of the tape cassette (1) is brought into contact with the contact portion (29) of the cassette retracting member (25), the tape cassette (1) is continuously inserted in the direction of arrow b in FIGS. 1A and 2A. Then, thereafter, the cassette pull-in member (25) is pushed by the tape cassette (1) to pull in the pull-in operation lever (34).
Is moved forward in the direction of arrow b against the return spring (52) which urges the rotation of.

That is, the cassette pull-in member (25) is pushed by the tape cassette (1) from the returning position shown in FIG. 3A and is moved in the direction of arrow b. Then, the pin (41) of the cassette pull-in member (25) pushes the pull-in operation lever (34) and the switch operation lever (36), and both levers (34)
(36) are respectively rotated in the directions of arrows d and h in FIG. 3A.
At this time, since one end (52b) of the return spring (52) is pushed in the direction of arrow d in FIG. 3A by the projection (53) of the pull-in operation lever (34), the return spring (52) is twisted. .. As a result of the above, the cassette retracting member (25) is moved forward in the direction of arrow b in FIG. 3A against the return spring (52).

Then, as shown in FIG. 3B, when the cassette retracting member (25) is moved forward a predetermined distance l ₁ from the backward movement position in FIG. 3A (1A
And the position shown by the phantom line in FIG. 2A), the operated element (44) of the cassette detection switch (43) is moved in the direction of arrow c'by the switch operation cam (42) of the switch operation lever (36). Then, the cassette detection switch (43) is turned on.

On the other hand, when the switch operating lever (36) is rotated in the direction of arrow h from the returning position in FIG. 3A to the position in FIG. 3B, the engaged element (61) of the switch operating lever (36) is 7A and 8A from the returning position to the positions of 7B and 8B in the direction of arrow g, the engaged member (61) of which is the inclined surface of the locking plate (60). Pressed by (71).
As a result, the locking plate (60) is horizontally rotated in the direction of arrow e'in FIG. 7B by the guiding action of the inclined surface (71) against the return spring (67), and the engaged member (61) becomes Figures 7B and
As shown in FIG. 8B, it is engaged with the engaging portion (72) of the lock plate (60). When the engaged member (61) is locked as shown in FIG. 7B, the cassette retracting member (25) is locked at that position via the switch operating lever (36).

When the cassette detection switch (43) is turned on, the motor (11) starts to rotate forward, and either one of the capstans (4) and (5) in FIG. The gear with cam groove (47)
It is rotationally driven in the direction of arrow i in FIG. 3B. Then, the engagement element (49) is driven by the cam groove (48) of the cam grooved gear (47), and the pull-in drive lever (35) is rotationally driven in the direction of arrow d in FIG. 3B. As a result, the twist of the return spring (52) twisted as described above is restored, and at the same time, as shown in FIG. 3C, the projection (56) of the retraction drive lever (35) is replaced by the projection (55) of the retraction operation lever (34). ), and thereafter, the pull-in drive lever (35) pushes the pull-in operation lever (34) to move the pull-in operation lever (34) in the direction of arrow d in FIG. 3C.
Is forced to rotate in the direction. The cassette pull-in member (25) is forcibly moved forward in the direction of arrow b in FIG. 3C by the pull-in operation lever (34) via the pin (41).

As a result, the tape cassette (1) is automatically pulled in the direction of arrow b in FIGS. 1A and 2A by the engaging portion (28) of the cassette retracting member (25), and FIGS. 1A and 2A are shown. The tape cassette (1) inserted to the position of the phantom line is automatically pulled in to a predetermined position in the cassette holder (2) as shown in FIGS. 1B and 2B. At this time, the switch operating lever (36) also continues to rotate in the direction of arrow h in FIG. 3C, but at that time, the switch operating cam (42) moves the operated element (44) of the cassette detection switch (43) toward the arrow c. Since it is held in the ‘direction, the cassette detection switch (4
3) is kept on until the tape cassette (1) is ejected.

On the other hand, the switch operating lever (36) moves from the position shown in Fig. 3B to the
By being rotated to the position shown in FIG. 3C, the engaged element (61) of the switch operating lever (36) is moved from the position shown in FIGS. 7B and 8B to the position shown in FIGS. 7C and 8C. Although it is rotated in the g direction, the engaged member (61) is disengaged from the engaging portion (72) of the locking plate (60) and moved onto the inclined piece (73). Then, the locking plate (60) is pushed down by the engaged element (61) by the guiding action of the inclined piece (73), and the locking plate (60) returns the return spring as shown by the solid line in FIG. 8C. It is rotated in the direction of the arrow f'against (67) and is returned in the direction of the arrow e by the force of the return spring (67) as shown by the solid line in FIG. 7C. The engaged member (61) rides on the lock plate (60) by the movement.

With the above, a series of operations for automatically retracting the tape cassette (1) into the cassette holder (2) is completed.

[Lowering operation of tape cassette]

As described above, after the tape cassette (1) is automatically pulled into the cassette holder (2), the elevator drive frame (15) is subsequently moved around the fulcrum shafts (17) as described below. It is rockingly driven in the direction of arrow a'in FIG. 2B. As a result, the cassette holder (2) is pushed down by the hinge structure portion (23) of the ascending/descending drive frame (15), and the cassette holder (2) includes the guided pin (18) and the guide groove (20). While being guided by, it is lowered in a substantially horizontal state and mounted in the cassette mounting position shown in FIG. 2C. Then, the tape cassette (1) is engaged with both capstans (4) and (5), reel shafts (9) and (10), and positioned in a predetermined state. At this time, as shown in FIG. 2C, as the tape cassette (1) descends, the engaging portion (28) of the cassette pull-in member (25) extends from the reel shaft insertion hole (27) of the tape cassette (1). Get out relatively. After the tape cassette (1) is mounted in the cassette mounting position, the magnetic head (8) is inserted into the tape cassette (1) as shown by the phantom line in FIG. Either one of the two pinch rollers (6) and (7) is inserted into the tape cassette (1) and pressure-bonded to one of the capstans (4) or (5) to automatically reproduce normal or reverse. Be started.

[Tape cassette eject operation]

The eject operation of the tape cassette (1) is performed by the reverse operation of the automatic pull-in operation and the descending operation of the tape cassette (1) described above.

That is, the raising/lowering drive frame (15) is first driven to rotate in the direction of arrow a in FIG. 2C, and the cassette holder (2) is returned to the cassette insertion position shown in FIG. 2B. At that time, the engaging portion (28) of the cassette pull-in member (25) is attached to the tape cassette (1).
It is again engaged in the reel shaft insertion hole (27). Next, the retracting drive lever (35) is rotationally driven in the direction of arrow d'in FIG. 3C, and the retracting lever (3) is moved through the return spring (52).
4) is rotated in the direction of arrow d'in FIG. 3C, and the cassette retracting member (25) is moved back in the direction of arrow b'in FIG. 3C. As a result, the contact portion (29) of the cassette pull-in member (25) pushes the tape cassette (1), and the tape cassette (1) is moved to the outside of the cassette holder (2) by the arrow b'in FIGS. 1A and 2A.
Automatically extrudes in the direction. At this time, the switch operating lever (36) is also rotated in the arrow h'direction in FIG. 3C, and the engaged member (61) is also moved back in the arrow g'direction in FIG. 7C. The engaged member (61) slides on the lock plate (60), and the engaged member (61) is engaged with the engaging portion (7).
It is never engaged in 2). And the engaged element (6
1) is returned to the return position shown in Fig. 7A, the lock plate (6
0) is rotated in the direction of arrow f in FIG. 8C by the return spring (67) to return to the initial position shown in FIG. 8A.

[Characteristics of automatic retraction mechanism]

According to the automatic retracting mechanism (33) described above, the engaged element (61) is provided on the switch operating lever (36) which is an interlocking member interlocked with the cassette retracting member (25), and the engaged element (61) is provided. Is provided with a locking plate (60) which is engaged by the engaging portion (72) and prevents the engaged member (61) from returning by the return spring (52). The locking plate (60) is engaged. Goko (61)
7A and 7B, the guide path of the engaged element (61) is changed depending on the forward movement in the direction of arrow g in FIG. 7C and the backward movement in the direction of arrow g′ in FIG. 7C. In addition, the engaging portion (72) is provided in the middle of the guide path for the forward movement of the engaged member (61), and the cassette retracting member (25) is pushed by the tape cassette (1) to return spring (52). ) Against the backward movement position shown in FIG. 3A, and when the cassette detection switch (43) is turned on by moving backward by a predetermined distance l _{1 as} shown in FIG. 3B.
As shown in FIG. 7B, the engaged member (61) is engaged with the engaging portion (72) of the locking plate (60), and the cassette retracting member (25) is locked at that position. Is configured to prevent the return spring (52) from returning the cassette retracting member (25). Therefore, even when the tape cassette (1) is inserted into the cassette holder (2) by tapping it, the cassette retracting member (2
5) is pushed once against the return spring (52) and the cassette detection switch (43) is turned on once, after which the cassette retracting member (25) is returned by the return spring (52). Since the cassette detection switch (43) is not moved and is kept in its ON state, even if such a tape cassette (1) is inserted, the cassette detection switch (43) will not be moved into the predetermined cassette holder (2). The automatic pulling operation of the tape cassette (1) can be always reliably performed.

[Structure description of operation switching mechanism]

Next, the operation switching mechanism (76) will be described with reference to FIGS. 9 to 14D. The operation switching mechanism (76) selectively operates the automatic retraction mechanism (77) and the cassette lifting mechanism (14). Is configured to drive.

First, in FIGS. 9 to 11D, the gear with cam groove (4
7) is rotatably attached to the outer periphery of a support shaft (77) fixed vertically on the mechanical substrate (3). The outer peripheral gear of the gear with cam groove (47) is configured as a toothless gear (79) in which a notch (78) is formed in a part of the peripheral surface thereof.
On the other hand, the motor shaft (80) of the motor (11) mounted on the mechanical substrate (3) is projected below the mechanical substrate (3), and the motor shaft (80) has a two-stage structure at the lower end thereof. The pulley (81) is stuck. The two-stage pulley (8
Lower pulley (81b) of 1) and both capstans (4)
A belt (82) is wound around a capstan flywheel (not shown) that also serves as a pulley of (5), and this motor (11) rotates both capstans (4) and (5). Is configured to drive. The reel base drive, the pinch roller crimping mechanism drive, and the azimuth automatic adjustment mechanism drive described above are configured to be driven by obtaining rotational force from the capstan flywheel or the like. An intermediate shaft (83) having upper and lower ends fixed to the mechanical board (3) and a part of the sub-board (16) is arranged at an intermediate portion between the motor (11) and the cam grooved gear (47). The first rotating body (84) is provided on the outer periphery of the lower half position of the intermediate shaft (83).
Is rotatably attached. This 1st rotating body (84)
A gear (85) and a pulley (86) are integrally provided at the upper and lower ends of the pulley, and the pulley (86) and the two-stage pulley (81) are provided.
A belt (87) is wound around the upper pulley (81a) of the. An oscillating body (89) is attached to the outer periphery of the upper half of the intermediate shaft (83) so as to be swingable in a horizontal plane about the intermediate shaft (83). The swing shaft (90) is vertically fixed to the lower part of the one end of the swing body (89),
A second rotating body (91) is attached to the outer periphery of the swing shaft (90) so as to be rotatable and movable in the axial direction of the swing shaft (90). Gears (92) (93) of different sizes are integrally provided on the upper and lower sides of the second rotating body (91), and the upper gear (92) is constantly meshed with the gear (85) to lower gear. (9
3) is configured to be selectively meshed with the toothless gear (79) of the gear with cam groove (47). In addition, the swing axis (9
0) at the outer peripheral position of the oscillating body (89) and the second rotating body (9).
A friction plate (94) made of felt or the like is interposed between the upper surface of 1) and the upper surface. The second rotating body (91) is connected to the swing shaft (9
The upper part of the washer (95) fitted slightly above the lower end (90a) of (0) is pressed upward by the compression spring (96) fitted to the outer periphery of the swing shaft (90). Therefore, the second rotating body (91) is configured to rotate while being in frictional contact with the oscillating body (89) via the friction plate (94). A balance weight (97) is fixed to the lower part of the end of the rocking body (89) opposite to the rocking shaft (90) with the intermediate shaft (83) interposed therebetween. Further, the lower end (90a) of the swing shaft (90) is inserted into a swing restriction hole (98) provided in the mechanical board (3), and the swing shaft (90) is connected to the swing restriction hole (98). ), both ends (98a) and (98b) are configured so that the swing range is restricted as shown in FIGS. 10A and 10B.

By the way, as described above, the pull-in drive lever (35)
The engaging element (49) is engaged in the first cam groove (48) on the upper surface of the gear with cam groove (47) as shown in FIGS. 9 to 11D. Both ends of the first cam groove (48) are closed ends (48
a) (48b).

Next, FIG. 9, FIG. 12, FIG. 13A, FIG. 13B, and FIG.
In FIG. 14D, a substantially spiral second cam groove (100) is also provided on the lower surface of the cam grooved gear (47). Both ends of this second cam groove (100) are also closed ends (100a) (100
formed in b). On the other hand, a control member (101) is rotatably attached to a lower portion of the mechanical board (3) via a fulcrum shaft (102). The control member (101) has a substantially L-shape, and a circle on which an engaging element (103), which is a roller rotatably supported on one end (101a), is provided on the mechanical substrate (3). It is inserted through the arcuate shape (104) and protrudes above the mechanical substrate (3) and is engaged in the second cam groove (100) of the gear with cam groove (47).

Next, an elevation drive lever (107) is integrally provided on one side of the other end of the elevation drive frame (15). The tip (107a) of the lifting drive lever (107) is inserted through an elongated hole (108) provided in the mechanical board (3) and projected below the mechanical board (3). On the other hand, mechanical board (3)
First and second sliding bodies (109) and (110) are slidably attached to one side of the control member (101) in the lower part of the. First, the first sliding body (109) is substantially U-shaped, and has a pair of T-shaped projections (111) integrally projected upward from both ends (109a) (109b) of the mechanical substrate (3). ) Is slidably engaged with a pair of long holes (112) provided in the mechanical board (3). The second sliding body (110) also has a generally U-shape, and the second sliding body (1
10) is placed on the lower part of the first sliding body (109) and
The slide body (109) is engaged with a guide groove (113) provided in the slide body (109) and is assembled slidably in the same direction as the first slide body (109). The sliding direction of these sliding bodies (109) (110) is parallel to the vertical rotation plane about the fulcrum shaft (17) of the lifting drive lever (107). Then, one ends (109a) and (11) of these sliding bodies (109) (110) are
The other end (101b) of the control member (101) and the tip (107a) of the elevating drive lever (107) are inserted between the control member (101) and 0a). However, it is pulled between one end (109a) of the first sliding body (109) and the other end (110b) of the second sliding body (110) and the projections (114) (115) that are integrally provided on the lower part. Spring (116)
Is stretched.

[Explanation of operation of operation switching mechanism]

First, FIG. 10A shows an eject completed state of the tape cassette (1). At this time, the gear with cam groove (47) is locked at the eject completed position P ₁ . By the start of the loading operation of the tape cassette (1), the cam grooved gear (47) is rotated 360° in the direction of arrow i in FIG. 10A by an angle corresponding to the width of the notch (78), and the gear is shown in FIG. 10B. It is changed to the loading completion position P ₂ shown.

By the way, when this eject is completed,
As shown in FIG. 4A, the gear (93) of the second rotating body (91) is located at the center of the notch (78), and the swing shaft (90) is located at one end (98a) of the swing restriction hole (98). ) Side is abutted.

When shifting to this eject completed state, the gear with cam groove (47) is engaged with the gear with toothless gear (79).
Thus, it is rotated in the direction of arrow i'in FIG. 14A. The second cam groove (100) formed on the gear with cam groove (47) is
The control member (101) is configured to guide an engaging element (103) at one end (101a) of the control member (101). Then, this control member (10
1) is pivotally supported by a fulcrum shaft (102) and swings when the engaging element (103) is guided by the second cam groove (100) as described above. Further, the other end (101b) of the control member (101) is, as shown in FIGS. 13A and 14A, both sliding members which are urged to slide in the directions of arrows k and k′ by the force of the tension spring (116). It is always located between the ends (109a) and (110a) of (109) and (110). On the other hand, when shifting to the eject completed state, the slide body (109) is urged to slide by the tension spring (116) in the direction of arrow k, and one end (109a) of the slide body (109) of the control member (101). Since the other end (101b) is pressed, this control member (101) is urged to rotate in the direction of arrow m. Therefore, the gear with cam groove (4
7) receives a biasing force from the engaging element (103) of the control member (101) in the second cam groove (100). In this case, the gear with cam groove (47) is the gear (93) with the cam groove.
While the driving force is being transmitted from, the rotation is performed in the direction of arrow i′ regardless of the urging force from the engaging element (103).

Immediately before shifting to the eject completed state, that is, when the notch (78) of the cam grooved gear (47) is rotated to a position facing the gear (93), the cam grooved gear (47) moves to the gear ( Since the driving force is not transmitted from 93), the second cam groove (100) is rotated by the urging force received from the engaging element (103) of the control member (101). In this case, the side surface (100a') close to the support shaft (77) of both side surfaces adjacent to the closed end (100a) of the second cam groove (100) is closer to the closed end (100a) as the gear with the cam groove is formed. Since it is inclined so that the distance from the center of rotation of (47) is small,
The force F ₁ that a′) receives from the engagement element (103) further urges the cam grooved gear (47) to rotate in the direction of arrow i′. That is, in this embodiment, the force F ₁ from the engaging element (103) acts on the position deviated to the left by the distance l _{2 with} respect to the rotation center of the gear with cam groove (47) in FIG. 14A. , F ₁ ×l ₂ causes the cam grooved gear (47) to be rotationally biased in the direction of arrow i′.

Therefore, the gear with cam groove (47) is rotated in the arrow i'direction until the closed end (100a) of the second cam groove (100) comes into contact with the engaging element (103), and the position shown in FIG. 14A is reached. That is, it is locked at the eject completion position P ₁ shown in FIG. 10A. In addition,
The engaging element (103) exerts a force to press the closed end (100a), and the rotation locus of the closed end (100a) and the engaging element (10
Since the rotation locus of 3) is different, the cam grooved gear (47) does not rotate in the arrow i direction.

As shown in FIG. 13A, the tension spring (116) urges the second sliding body (110) to slide in the direction of the arrow k', and at its one end (110a), the tip (107) of the lifting drive lever (107) is moved.
a) is pushed, the elevating drive lever (107) is urged to rotate in the direction of arrow a in FIG. 13A, and as a result, the cassette holder (2) is moved to the tape cassette (1) shown in FIG. 2A. ) The cassette has been returned to the cassette insertion position.

Next, when the cassette detection switch (43) described above is turned on, the motor (11) is positively rotated in the direction of arrow n in FIG. 10A, and the belt (87) is driven by the motor shaft (80).
The first rotating body (84) is rotationally driven in the direction of arrow o in FIG. 10A via. Then, the gear (8
5) By means of the upper gear (92), the second rotating body (91)
Is rotationally driven in the direction of arrow q in FIG. 10A. However, at this time, due to the frictional action of the friction plate (94) interposed between the second rotating body (91) and the oscillating body (89), the oscillating body (89) is centered on the intermediate shaft (83) at the 10A position. In the figure, a rotational moment in the direction of arrow o acts to swing the swinging body (89) in the same direction.

Then, as shown in FIGS. 11B and 14B, the second rotating body (9
The lower gear (85) of 1) is meshed with the toothless gear (79) of the gear with cam groove (47), and the gear (47) with cam groove is engaged by the lower gear (85) via the toothless gear (79). 11B and 14B
It is rotationally driven in the direction of arrow i in the figure. At this time, the lower end (90a) of the swing shaft (90) is the other end (98b) of the swing restriction hole (98).
And the swing range of the swing body (89) in the direction of arrow o is regulated.

As the gear with cam groove (47) is rotationally driven in the direction of arrow i, the engaging element (49) is guided by the first cam groove (48), and the pull-in drive lever ( 35B is rotationally driven in the direction of arrow d in FIG. 11B, and the pull-in operation lever (34) is rotationally driven in the same direction, so that the above-described automatic pull-in operation of the tape cassette (1) is performed.

On the other hand, when the retraction operation lever (34) is rotationally driven in the direction of arrow d in FIG. 11B, the other engagement element (103) is also relatively moved in the second cam groove (100), but the retraction operation is performed. The control member (101) is not rotated until the lever (34) reaches the forward movement position shown in FIG. 11C.

And the gear with cam groove (47) has a rotation angle of about 1/2.
At the time of rotation, the retraction operation lever (34) reaches the forward movement position shown in FIG. 11C, and the subsequent rotation of the gear with cam groove (47) in the direction of arrow i causes the second cam groove (10) to move.
The engaging member (103) is guided by the control member (10).
1) is rotationally driven in the direction of arrow m in FIG. 14B. After this, the engagement element (49) is relatively moved in the first cam groove (48), but no turning force is applied to the pull-in drive lever (35) and the pull-in operation lever (34) is moved to the first position. It is held in the forward movement position shown in Fig. 11C.

When the control member (101) is rotationally driven in the direction of arrow m in FIG. 14B, the other end (101b) of the control member (101) is moved to the second sliding body as shown in FIGS. 13B and 14C. It contacts one end (110a) of (110) and pushes it in the direction of arrow k. Then, the other end (110b) of the second sliding body (110) causes the tension spring (1
One end of 16) is pulled in the direction of arrow k, and the tension spring (11
The first sliding body (109) is slid in the direction of arrow k in FIGS. 13B and 14C via 6). As a result, the first sliding body (109)
One end (109a) of the
a) is pushed in the direction of arrow k, and its raising/lowering drive lever (107) is rotationally driven in the direction of arrow d'in FIG. 13B, and the descending operation of the cassette holder (2) to the cassette mounting position is performed. ..

When the gear with cam groove (47) is rotated by a predetermined angle in the direction of arrow i, the gear with cam groove (47) reaches the loading completion position P ₂ as shown in FIGS. 11C and 14C, The tooth-missing gear (79) has a second position due to the notch (78).
It disengages again from the lower gear (93) of the rotating body (91) and is automatically stopped at that position.

Then the gear with cam groove (47) is at the loading completion position.
When it reaches P ₂ , it is locked again at that position by the rotational biasing force of the control member (101) as shown in FIG. 14C.

When shifting to the loading completion state, the gear with cam groove (47) is engaged with the gear with missing tooth (79).
Is rotated in the direction of arrow i in FIG. 14C. The other end (101b) of the control member (101) is, as described above, one end (109a), (110a) of each of the sliding bodies (109), (110).
Always located between. On the other hand, when shifting to the loading completion state, the slide body (110) is urged to slide by the tension spring (116) in the arrow k'direction (see FIG. 14A), and one end (110a) of this slide body (110). Presses the other end (101b) of the control member (101), so that the control member (101) is urged to rotate in the direction of arrow m'. Therefore, the gear with cam groove (47) causes the control member (10) to move in the second cam groove (100).
A biasing force is received from the engaging element (103) of 1). In this case, the gear with cam groove (47) is provided with the engaging element (10) while the gear with cam groove (47) is transmitting the driving force from the gear (93).
It is rotated in the direction of arrow i regardless of the urging force from 3).

Immediately before shifting to the loading completion state, that is, when the notch (78) of the cam grooved gear (47) is rotated to a position facing the gear (93), the cam grooved gear (47) moves to the gear ( Since the driving force is not transmitted from 93), the second cam groove (100) is rotated by the urging force received from the engaging element (103) of the control member (101). In this case, the side surface (100b') of the two side surfaces adjacent to the closed end (100b) of the second cam groove (100) that is far from the support shaft (77) has the closed end (10b).
Since the cam grooved gear (47) is inclined so that the distance from the center of rotation of the cam grooved gear (47) increases toward 0b), the force F ₂ that the side surface (100b′) receives from the engaging element (103) is The attached gear (47) is further urged to rotate in the direction of arrow i. That is, in this embodiment, the force F ₂ from the engaging element (103) is
Since acts on a position offset upward by a distance l ₃ against rotation center of the gear with the cam groove (47) in 4C diagrams, F ₂ × l ₃ cam grooved gear in rotational moment due to (47) of arrow i Is urged to rotate in the direction.

Therefore, in the gear with cam groove (47), another engaging element (49) comes into contact with the closed end (48b) of the first cam groove (48) to the position shown in FIG. 14C, that is, the loading completion shown in FIG. 10B. Locked at position P ₂ . At this time, the closed end (100b) of the second cam groove (100) may be brought into contact with the engagement element (103) to lock the gear with cam groove (47), but the engagement element (49) is better. Since the cam grooved gear (47) is far away from the center in the radial direction, it is preferable that the cam grooved gear (47) can be strongly locked.

Next, at the time of the above-mentioned eject, the motor (11) is reversely rotated in the direction of the arrow n'in FIG. 10B. Then, by the reverse operation at the time of loading described above, the lower gear (93) of the second rotating body (91) is oscillated in the direction of arrow o'while being rotationally driven in the direction of arrow q'in FIGS. 11D and 14D. Are engaged again with the toothless gear (79) of the cam grooved gear (47), and the cam grooved gear (47) is rotationally driven in the direction of arrow i′ in FIGS. 11D and 14D. As a result, the lift drive lever (10
13) is rotationally driven in the direction of arrow a in FIG. 13B, the cassette holder (2) is raised and returned to the cassette insertion position as described above, and subsequently, the retracting drive lever (35) and the retracting operation lever ( 34) is rotationally driven in the direction of arrow d'in FIG. 11D, and the automatic pushing operation of the tape cassette (1) is performed as described above.

[Characteristics of operation switching mechanism]

According to the operation switching mechanism (76) described above, the first rotating body (84) which is normally and reversely driven by the motor (11).
And a second rotating body (91) which is swung according to the rotation direction of the first rotating body (84) and has a gear (93), and a swing range of the second rotating body (91). Swinging restricting hole (98) as a restricting means, and the first and second cam grooves (48) (100) and the first cam grooves (48) (100) for driving the retractable drive lever (35) and the up-and-down drive lever (107) which are operated members. 2 Rotating body (91) Gear (9
3) having a toothless gear (79) with which 3) is selectively meshed
The cam grooved gear (47), which is a rotating body, and the cam grooved gear (47) are set to the eject completion position P ₁ and the loading completion position.
P ₂ and positioning means (for example, a locking function of the engaging element (103) and the second cam groove (100)) for positioning the second rotating body by the forward and reverse rotation drive of the first rotating body (84). By swinging (91) and selectively engaging the gear (93) of the second rotating body (91) with the toothless gear (79) of the gear with cam groove (47), the cam groove is formed. The attached gear (47) is selectively driven to rotate normally and reversely, and the first and second cam grooves (48) are provided.
Since the retracting drive lever (35) and the elevating drive lever (107) are driven by the (100), it is not necessary to use an auxiliary device that gives a mechanical rotation trigger to the toothless gear (79). By simply rotating the motor (11) forward and backward, the tooth-missing gear (79) can be selectively driven to perform a predetermined switching operation. Therefore, the structure can be simplified and the cost can be reduced. The gear (93) of the second rotating body (91) is always positively meshed with the toothless gear (79) of the gear with cam groove (47) by the forward and reverse rotation drive of the motor (11), and the toothless gear is Since (79) is driven reliably, the switching operation is always performed reliably.

It should be noted that the first rotating body (84) and the second rotating body (91) are interlocked with each other by a belt so that the second rotating body (84) can be rotated in accordance with the rotation direction of the first rotating body (84).
It is also possible to change the rotating body (91) so as to swing.

Further, according to the operation switching mechanism (76), the operation switching mechanism (76) has the second cam groove (100) whose both ends are closed, and is configured to be rotationally driven at a predetermined angle by the second rotating body (91) which is a drive source. The gear with cam groove (47) and the gear with cam groove (47) which are engaged with the second cam groove (100) via the engaging element (103).
Control member (101) configured to be displaced by the rotation of the control member (101), and an elevating drive lever (10) which is an operated member configured to be interlocked with the displacement of the control member (101).
7) and when the lifting drive lever (107) is moved to the operation position of FIG. 13A or 13B, the force of the tension spring (116), which is the return spring, is applied to the control member (101). To act on the engagement element (103) via the engagement element (103) and press the engagement element (103) against the side surface of the closed end (100a) (100b) of the second cam groove (100) (100a)'(100b)'. Thereby urges the cam grooved gear (47) to rotate in the direction of arrow i in FIG. 14A or in the direction of arrow i′ in FIG. 14D, and the engagement element (103) thereof.
Is configured to contact the closed end (100a) (100b) of the second cam groove (100) and lock the cam grooved gear (47) at that position. A locking device as an auxiliary device for locking (47) at a predetermined position is unnecessary, and the structure can be simplified and the cost can be reduced.

[Characteristics of the cassette retractor mounting/discharging mechanism]

According to the cassette retracting mounting/discharging mechanism described above,
Automatic pulling operation of the tape cassette (1) into the cassette holder (2) and subsequent cassette holder (2)
The loading operation consisting of the descending movement of the motor and the opposite eject operation can be performed mechanically with the forward and reverse rotation drive of the motor (11) and the cam mechanism with the cam grooved gear (47). You can do it quietly. Therefore, no unpleasant impact noise is generated at the time of loading and ejecting, and soft loading and soft ejecting are realized by a simple structure and a highly reliable structure.

Further, as will be described later, the forward/reverse rotation of the motor (11) is controlled by turning on/off the cassette detection switch (43), and the soft loading and soft edge are controlled only by the forward/reverse rotation drive of the motor (11). Since, for example, a car stereo, soft loading and soft eject can be performed by remote control (operation of the remote switch) from the rear seat.

In addition, the capstan drive motor (11) is used for soft loading and soft ejecting, and a very low cost loading mechanism is realized without using any dedicated motor or electromagnetic device. ..

[Description of drive system] Next, referring to FIG. 15, both capstans (4) and (5) will be described.
A drive system for the reel shafts (9) and (10) will be described.

First, the motor (11) constitutes a capstan drive motor as described above. The belt (82) wound around the pulley (81) fixed to the motor shaft (80) of the motor (11) includes a pair of flywheels (4) fixed to the capstans (4) and (5). 125) (126) is wrapped around the anti-rolling system. Therefore, both capstans (4) and (5) are driven to rotate in opposite directions through the belt (82) by the normal rotation of the motor (11).

Next, both flywheels (125) and (126) are integrally provided with inner peripheral gears (127) (128) and outer peripheral gears (129) (130), respectively, and also on both reel shafts (10) (9). ), reel gears (131) and (132) are integrally provided on the outer circumference of each of these.

Then, during normal reproduction, the normal idler (135) is driven by the normal idler (135) while the motor (11) is being driven to rotate normally, and the inner peripheral gear (127) of one flywheel (125) and the reel base gear of one reel shaft (10) ( 131) and the reel shaft (10) is rotationally driven by utilizing the rotational torque of the flywheel (125) on the one side.

Also, during reverse reproduction, the reverse idler (137) is also driven in the normal rotation of the motor (11) and the reverse idler (137) is mounted on the inner peripheral gear (128) of the other flywheel (126) and the reel stand of the other reel shaft (9). By meshing with the gear (132), the other reel shaft (9) is rotationally driven by utilizing the rotational torque of the other flywheel (126).

When fast-forwarding or rewinding, both reel base gears (13
1) An idler (139) arranged in the middle of (132) is selectively meshed with the outer peripheral gear (129) of one flywheel (125) and the reel base gear (131) of one reel shaft (10),
Or the outer gear (130) of the other flywheel (126)
By selectively meshing with the reel base gear (132) of the other reel shaft (9), both reel shafts (10) and (9) are also driven in the state where the motor (11) is also driven to rotate normally. It is configured to be selectively rotated at high speed.

Therefore, according to this car stereo, all the tape running such as normal playback and reverse playback, fast forward and rewind in the normal running state, fast forward and rewind in the reverse running state, and the above-mentioned tape cassette (1) The loading operation of the tape cassette to the cassette mounting position is performed by the forward rotation drive of the capstan drive motor (11), and the reverse rotation drive of the motor (11) causes the tape cassette ( It is configured so as to perform an eject operation to the cassette insertion position of 1). The idlers (135), (137) and (139) are supported by swinging arms (140), (141) and (142), respectively, and are configured to swing.

[Explanation of electric control system]

The electric control system will be described with reference to FIG.

Cassette holding detection switch (20) for detecting the removal of the tape cassette (1) from the cassette holder (2)
0) is a leaf spring (22) which elastically presses one side of the tape cassette (1) inserted in the cassette holder (2).
It is turned on and off by the ends of the. The tape cassette (1) is turned on when the tape cassette (1) is pulled out from the cassette holder (2) and is not held, and is turned off when the tape cassette (1) is inserted and held.

Then, the tape cassette (1) is held in the cassette holder (2), and the cassette holding detection switch (20
When (0) is off, play (PLAY) and fast forward (F
F), rewind (REW) and eject (EJECT) pushbutton switches (201) which are operation switches for mode switching.
One terminal side of ~ (204) is kept at ground potential. Further, the inhibit signal which becomes the "H" signal which is given as the input of the mutual reset circuit (205) to make the mutual reset circuit (205) in the non-operating state is the ground potential "when the cassette holding detection switch (200) is off. L" signal state. That is, the non-operating state is released and the mutual reset circuit (205) is set to the operating state. Therefore, when each push button switch (201) to (204) is pressed to instruct the mode switching, the "L" signal of the ground potential is formed on the other end side due to the temporary ON state. Then, the "L" signal is inverted to the "H" signal through the NOT circuits (NOT1) to (NOT4) and given to the mutual reset circuit (205). Then, in the mutual reset circuit (205) which is released from the non-operation state and is in the operation state, the "H" signal causes the play (PLAY), fast forward (FF), rewind (REW) and eject (EJECT) mode operations to be performed. Operation flip-flop circuit (FF
1)-(FF4) operation flip-flop circuits (FF4) except EJECT operation flip-flop circuit (FF1)-(FF3) are reset input by mutual reset operation, and each Q output is "L" signal. Reset to become. In addition, the pushbutton switches (201) to (2) that have been pressed with the reset input slightly delayed in time.
The operation flip-flop circuits (FF1) to (FF4) corresponding to the switching mode instructed by 04) are provided with set inputs and set so that their Q outputs become "H" signals to set the mode operation. The Q outputs of the respective operation flip-flop circuits (FF1) to (FF4) are the system control circuit (20
6) given to the operation flip-flop circuit circuit (FF1)
A predetermined mode switching operation is performed by the system control circuit (206) based on the Q output which becomes "H" signal of (FF4).

Note that when the cassette holding detection switch (200) in which the tape cassette (1) is not held in the cassette holder (2) is on, an inhibit signal which becomes an "H" signal is given as an input to the mutual reset circuit (205). Since the reset circuit (205) is in a non-operating state, even if the pressing switches (201) to (204) are pressed, the operation flip-flop circuits (FF1) to (FF4) are set and the mode operation is set. There is no such thing.

Next, the remote control, the one-cycle reverse control, and the accessory key-off eject control will be sequentially described.

(I), Remote operation control (remote control) Playback (PLAY), fast forward (FF) and rewind (REW) operations One of the "H" signals given as set inputs to the flip-flop circuits (FF1) to (FF3). The parts are also provided as inputs to the OR circuit (OR1), respectively. And the OR circuit (OR
Operation flip-flop circuit (FF5) that sets the forward rotation drive operation of the capstan drive motor (11) through 1)
As a set input, and its Q output is set to become an "H" signal. The Q output that becomes the "H" signal of this operation flip-flop circuit (FF5) is the AND circuit (AND1).
When the accessory power supply Acc+B, which is the other input of the above, is in the "H" signal state, it is given to the motor control circuit (207) through the AND circuit (AND1) as a signal for driving the motor (11) to rotate normally. Then, the forward rotation drive of the capstan drive motor (11) is started.

On the other hand, as described above, the normal rotation of the motor (11) is driven to perform normal and reverse reproduction, and all tape running including fast forward and rewind in the normal and reverse running states, and loading operation. .. Accordingly, the tape cassette (1) is loaded by driving the motor (11) in the normal rotation, and subsequently, the reproduction (PLAY) and the fast forward (FF) set by the set input from the mutual reset circuit (205). Or rewind (REW) operation flip-flop circuit (FF1) to (FF3)
In the normal playback, reverse playback, and normal running states, the Q output of the "H" signal of the designated flip-flop circuit (FF7) for designating the tape running direction, which will be described later, or the predetermined mode switching operation of the system control circuit (206) based on the output. Fast forward or rewind, or fast forward or rewind tape running in the reverse running state.

Also, part of the "H" signal given as a set input from the OR circuit (OR1) to the operation flip-flop circuit (FF5) of the motor (11) is sent to the operation flip-flop circuit (FF4) of the eject (EJECT) through the diode (D1). It is applied as a reset input, and its Q output is reset so that it becomes an "L" signal. The operation flip-flop circuit (FF4) is turned on by the loading of the tape cassette (1) and turned off by the completion of the tape cassette (1) ejecting. The cassette detection switch (43) is turned off. Also, the reset input which becomes the "H" signal is applied and reset through the NOT circuit (NOT5) and the diode (D2).

Then push button switch (204) of EJECT
When is pressed, the mutual reset operation by the mutual reset circuit (205) causes the reproduction (PLA
Y), fast forward (FF) and rewind (REW) operation flip-flop circuits (FF1) to (FF3) are reset, and the set input is given to the operation (EJECT) operation flip-flop circuit (FF4). Q output is "H"
Set to signal. Further, a part of the set input which becomes the "H" signal is given to the operation flip-flop circuit (FF5) of the motor (11) as a reset input, and its Q output is reset so that it becomes the "L" signal.

Therefore, through the AND circuit (AND1), the motor control circuit (20
The "L" signal is given to 7) and the forward rotation drive of the capstan drive motor (11) is stopped. Also, the eject (EJ
The Q output which becomes the "H" signal of the operation flip-flop circuit (FF4) of the ECT) is when the "H" signal is given by the ON state of the cassette detection switch (43) as the other input of the AND circuit (AND2). The signal is given to the motor control circuit (207) through the AND circuit (AND2) as a signal for driving the motor (11) in reverse rotation. Then, the reverse rotation drive of the capstan drive motor (11) is started. As a result, the eject operation is performed as described above, and the tape cassette (1) is ejected.

When the tape cassette (1) is completely ejected, the cassette detection switch (43) is turned off, and the "L" signal is sent to the motor control circuit (207) through the AND circuit (AND2).
The reverse rotation drive of the motor (11) is stopped.

Even if the cassette detection switch (43) is turned off due to the completion of the eject for timing adjustment, the time constant circuit of the capacitor (C1) and the resistor (R1) immediately connects through the AND circuit (AND2). The L" signal is not given to the motor control circuit (207).

Therefore, in the case of remote control, play (PLA
Y), fast forward (FF), rewind (REW) and eject (EJ
By applying the output from the remote control receiving circuit (not shown) to the push button switches (201) to (204) of ECT) and the push button switch (208) of the tape traveling direction switching of the direction (DIR) described later. , Remote control can be easily realized.

As described above, when the cassette holding detection switch (200) is turned on because the tape cassette (1) is not held in the cassette holder (2), the mutual reset circuit (205) becomes the "H" signal. The inhibit signal is given as an input and it becomes inactive. Therefore, it is possible to prevent the loading operation when the tape cassette (1) is not held in the cassette holder (2), which is easy to use, especially when performing remote operation.

(II), One-cycle reverse control The one-cycle reverse control basically means that when the tape cassette (1) is inserted into the tape holder (2) and loaded, the tape is first rewound onto the tape top and normal. When the tape is played back and then the tape end is reached, reverse playback is carried out, and when the tape top is returned to the end, the tape cassette (1) is ejected.
This control is performed by the system control circuit (206) by turning on the one-cycle reverse switch (209).

Next, with the one-cycle reverse switch (209) turned on, the tape cassette (1) in the eject completed state is removed from the cassette holder (2) at the cassette insertion position of the tape cassette (1), and then the tape is re-taped. When the cassette (1) is inserted into the cassette holder (2) and loaded, and when the cassette cassette (1) in the ejected state is not removed from the cassette holder (2) and the loading is performed again. The case will be described.

It should be noted that power is always supplied to the detection flip-flop circuit (FF6) for storing the state of the tape cassette (1) being taken out from the cassette holder (2), the designated flip-flop circuit (FF7) for designating the tape running direction, and the like.

(I) In the former case (when the tape cassette (1) is pulled out from the cassette holder (2) and then the tape cassette (1) is inserted again into the cassette holder (2), the cassette holder (2) When the tape cassette (1) is removed from the inside, the cassette holding detection switch (200) is turned on, so the detection flip-flop circuit (FF
The set input which becomes the "H" signal is given to 6), and its Q output is set so that it becomes the "H" signal. The "H" signal of this Q output is given as a set input to the set priority-T type tape running direction designating flip-flop circuit (FF7), and its Q output designates the "H" signal, that is, the normal tape running direction. Is set. The Q output which becomes this "H" signal is given to the system control circuit (206),
A predetermined mode switching operation is performed depending on the normal tape running direction.

On the other hand, the Q output which becomes the "H" signal of the detection flip-flop circuit (FF6) is given as one input of the NAND circuit (NAND1), and the cassette detection switch (4
When the "H" signal is given by the ON state of 3), the "L" signal is given as an input of the NOT circuit (NOT3) of the rewinding (REW) through the diode (D3). Then, as described above, the NOT circuit (NOT3) and the mutual reset circuit (20
The rewind (REW) operation flip-flop circuit (FF3) is set through 5) and the other operation flip-flop circuits (FF1) (FF2) (FF4) are reset, and the OR circuit (RO1) and motor (11) are set. The normal rotation drive of the capstan drive motor (11) is started through the operation flip-flop circuit (FF5), the AND circuit (AND1) and the motor control circuit (207). As a result, the tape cassette (1) is loaded, and after the loading is completed, the rewinding (REW) operation flip-flop circuit (FF3) outputs the Q output which becomes the "H" signal, and the tape traveling direction designated flip-flop circuit (FF7). ), the system control circuit (206) performs a predetermined mode switching operation for rewinding in the normal running state. Then, the rewinding tape running in the normal running state is performed. In the system control circuit (206), the designated flip-flop circuit (FF7) for the tape traveling direction causes the "H" signal of the designated flip-flop circuit (FF7) to be the "H" signal. "Depending on the signal output, a predetermined mode switching operation is performed depending on the reverse tape running direction.

When the cassette detection switch (43) is turned on, a differential waveform "L" signal is applied to the input of the NOT circuit (NOT1) of the reproduction (PLAY) through the NOT circuit (NOT6) and the capacitor (C2). However, "L" given to the input of the NOT circuit (NOT3) of the rewind (REW) that overlaps in time
Since the signal becomes a signal that is long in time, the operation setting of reproduction (PLAY) is not performed by the "L" signal of this differential waveform.

In addition, the specified flip-flop circuit (FF
7) The system control circuit (20
From 6), the trigger input is given when the tape end or the tape top is detected by the reproduction and the fast forward. The Q output and output due to the fall of the trigger input are inverted, and the designation of the tape running direction is inverted.

Therefore, in this case, when loading is completed, the tape is first rewound and returns to the tape top, then normal reproduction is performed, and when the tape end is reached, reverse reproduction is performed, and finally the tape top is returned. Then, the tape cassette (1) is to be ejected.

In addition, the specified flip-flop circuit (FF
The trigger input of 7) is also given by pressing the push button switch (208) of the direction (DIR) through the OR circuit (OR2). As the input of the OR circuit (OR2), the Q output of the designated flip-flop circuit (FF7) when the tape cassette (1) is removed from the cassette holder (2) that turns on the cassette holding detection switch (200). And an inhibit signal which is an "H" signal is provided to prevent the output from being inverted. Therefore, the tape running direction is designated by the pressing operation of the push button switch (208) of the direction (DIR) when the cassette holding detection switch (200) is off.

The detection flip-flop circuit (FF6) has an OR
The operation flip-flop circuit (FF4) of the eject (EJECT) is set through the circuit (OR3), and a part of the Q output which becomes the "H" signal is supplied as a reset input. That is, the capstan drive motor (11) is driven in reverse by the set of the operation flip-flop circuit (FF4),
A reset input is given by moving the cassette holder (2) back to the cassette insertion position of the tape cassette (1) by an eject operation. Also, the trigger input that becomes the "H" signal given to the designated flip-flop circuit (FF7) in the tape running direction when the tape end or the tape top is detected by the system control circuit (206) through the OR circuit (OR3) during playback and fast forward. Is also given as a reset input. As a result, the detection flip-flop circuit (FF6) is reset so that its Q output becomes the "L" signal.

(Ii) In the latter case (when the tape cassette (1) is not pulled out from the cassette holder (2)) If the tape cassette (1) is not pulled out from the cassette holder (2), the cassette holding detection switch (200) Is kept off. Therefore, the detection flip-flop circuit (FF6) is not supplied with the set input that becomes the "H" signal,
The Q output is kept in the reset state of the "L" signal.

Therefore, the designated flip-flop circuit (FF7) for the tape running direction is kept in the state when the tape cassette (1) is ejected without being set. This causes the designated flip-flop circuit (FF7) to output "H".
According to the Q output or the output of the signal, for example, if the output is the "H" signal, the system control circuit (206) performs a predetermined mode switching operation according to the reverse tape running direction which is the same as when it is ejected. Be seen.

Since the Q output of the detection flip-flop circuit (FF6) is maintained at the "L" signal, the NOT circuit (NOT) of the rewinding (REW) is performed through the NAND circuit (NAND1) and the diode (D3).
No "L" signal is given to 3). Also, the tape cassette (1) is loaded and the cassette detection switch (43) is loaded.
When is turned on, the differential waveform "L" signal is played (PLAY) NO through the NOT circuit (NOT6) and capacitor (C2).
It is given as an input to the T circuit (NOT1) and the operation flip-flop circuit (FF1) of the playback (PLAY) is set. As a result, the loaded tape cassette (1)
Runs in the tape running direction when the tape is ejected without being rewound.

Therefore, in this case, when the tape is ejected without being rewound, for example, when the tape is ejected when the tape is in the reverse reproduction, the tape reproduction of the reverse reproduction is started and the tape is reversed. Playback is performed. When the tape cassette (1) is returned to the tape top, it is ejected.

When the one-cycle reverse switch (209) is in the off state, the same operation as in (ii) above is performed, but since no eject is performed, the tape running for normal playback and the tape running for reverse playback are alternately repeated. ..

(Iii) Accessory key-off eject control When the potential of the accessory power supply Acc+B falls and enters the “L” signal state, the partial voltage is applied as an input to the NOT circuit (NOT7), which causes the capacitor to be discharged ( C3) is gradually charged. Then, within a certain period of time until it is charged and its terminal potential reaches the specified potential, NOT
The "H" signal at the output of the circuit (NOT8) is maintained. That is, since the "L" signal is not applied to the input of the NOT circuit (NOT4) of the eject (EJECT), the operation flip-flop circuit (FF4) of the eject (EJECT) is not set and the eject operation is not performed. That is, the capacitor (C3) delays the detection of the potential drop of the accessory power supply Acc+B. And accessory power supply Ac within a certain time
When c+B is restored to the original potential, that is, the "H" signal state, the terminal potential of the capacitor (C3) is discharged without reaching the predetermined potential, so that the eject operation is not performed. Accordingly, when the engine key is turned to the on position of the cell motor to start the engine by rotating the cell motor, the eject operation due to the accessory power supply Acc+B temporarily becoming a low potential or 0 V is prevented.

When the accessory power supply Acc+B becomes low potential or 0 V, the normal rotation drive of the motor (11) is stopped through the AND circuit (AND1) and the motor control circuit (207).

When the accessory power supply Acc+B is in the low potential or the OV state for a certain time or longer, the capacitor (C3) is fully charged and its terminal potential reaches the predetermined potential, and the NOT circuit (NOT
8) and diode (D4) through the eject (EJEC
The "L" signal is given to the NOT circuit (NOT4) of T).
Then, the operation flip-flop circuit (FF4) of the eject (EJECT) is set, the reverse rotation drive of the motor (11) is started through the AND circuit (AND2) and the motor control circuit (207), and the tape cassette (1) is automatically To be ejected.

Although the embodiments of the present invention have been described above, various effective modifications can be made based on the technical idea of the present invention.

EFFECTS OF THE INVENTION The present invention has the following effects.

, The forward rotation of the capstan drive motor moves the cassette retracting mounting/discharging mechanism forward, and the reverse rotation drive moves the cassette retracting mounting/discharging mechanism back, eliminating the need for a loading-dedicated motor and making it compact. Can be achieved.

A state in which the tape cassette is inserted into the cassette insertion/removal position where the tape cassette can be inserted/removed and engaged with the cassette retraction/ejection mechanism, and the presence of the tape cassette in the cassette insertion/removal position is detected by the detection means. In the above, if the control circuit drives the capstan drive motor in the forward rotation by operating the tape running operation switch such as playback by remote control, the cassette retraction/ejection mechanism is driven forward to move the tape cassette to the cassette loading position. Since the loading operation is performed, the remote control operation including the loading of the tape cassette can be easily realized by giving the output of the remote control receiving circuit to the tape running operation switch such as reproduction.

In addition, if the control circuit drives the capstan drive motor in the forward direction by operating the tape running operation switch for playback, etc. as described in the above item, and drives the cassette retraction/ejection mechanism in the forward direction, the tape cassette is moved to the cassette loading position. Since it is loaded on the tape cassette, it is not necessary to set the tape cassette to the loading completed state in advance when remotely operating as in the conventional example, and the tape running such as playback including loading can be performed by one operation. It is convenient for remote control.

Further, from the above item, if the control circuit further drives the capstan drive motor in the reverse rotation by operating the eject operation switch to drive the cassette retraction/ejection mechanism in the backward direction, the tape cassette is ejected. By doing so, the tape cassette can be automatically ejected even when the tuner is on,
Mutual priority operation with the tuner becomes possible, and operability with the tuner can be improved.

Moreover, unlike the conventional example, even if the tape cassette is ejected once, it can be loaded by remote operation again from the above-mentioned item, so that it is preset in a timer in, for example, a component car stereo. Therefore, various usages such as loading and reproducing at a predetermined time are possible, which is extremely easy to use as a system.

Moreover, as described in the above item, if the detection means does not detect that the tape cassette is in the cassette insertion/removal position, the cassette retraction/ejection mechanism is driven forward even if the tape running operation switch for reproduction or the like is operated. Is not done,
When the tape cassette is empty and has not been inserted into the cassette insertion/removal position, or when the tape cassette has not been properly inserted into the cassette insertion/removal position
There is no fear that the discharging mechanism is unnecessarily driven forward and the loading operation is performed.

The cassette retraction mounting/discharging mechanism in the present invention is, for example, the cassette lifting mechanism (14) and the automatic retraction mechanism (33) in the embodiment, and the control circuit in the present invention is, for example, the motor control circuit (207) in the present embodiment. , AND
Circuit (AND1) (AND2), operation flip-flop circuit (FF
4) (FF5) etc.

[Brief description of drawings]

The drawings show an embodiment in which the present invention is applied to a car stereo, and FIGS. 1A and 1B are plan views for explaining the automatic drawing operation of the tape cassette, and FIGS. 2A to 2C are tape cassettes. 3A to 3C are side views for explaining the automatic retraction operation and the lowering operation of the cassette holder, FIGS. 3A to 3C are plan views for explaining the driving operation of the cassette retraction member by the automatic retraction mechanism, and FIG. 4 is the retraction of the automatic retraction mechanism. FIG. 5 is an exploded perspective view for explaining the relationship between the operation lever, the pull-in drive lever and the gear portion with cam groove, FIG. 5 is a side view of the same as the assembled state, and FIG. 6 is an exploded perspective view of the switch operation lever and the lock plate. , FIGS. 7A to 7C are plan views for explaining the locking operation by the locking mechanism of the same, FIGS. 8A to 8C are side views of the same,
FIG. 9 is a sectional view of the operation switching mechanism portion, FIGS. 10A and 10B.
The figure is a plan view showing an eject completed state and a loading completed state, and FIGS. 11A to 11D are plan views illustrating a driving operation of a retracting operation lever and a retracting drive lever.
FIG. 12A is an exploded perspective view for explaining the relationship between the gear with cam groove, the sliding body, the control member, and the lifting drive lever portion of the same, 13A.
FIG. 13 and FIG. 13B are side views explaining the driving operation of the lifting drive lever, and FIGS. 14A to 14D are plan views illustrating the driving operation of the lifting drive lever by the control member and the locking operation of the cam grooved gear, FIG. 15 is a plan view illustrating a drive system, and FIG. 16 is a block circuit diagram illustrating an electric control system. Further, in the reference numerals used in the drawings, (1) ... tape cassette (11) ... capstan drive motor (14) ... cassette lifting mechanism (33) ... automatic retracting mechanism (200) ... cassette holding detection switch (Detection means) (201)……Play (PLAR) operation switch (202)……Fast forward (FF) operation switch (203)……Rewind (REW) operation switch (204)……Eject (EJECT) Operation switch (207)……Motor control circuit (AND1) (AND2)……AND circuit (FF4) (FF5)……Operation flip-flop circuit.

Front page continuation (72) Inventor Hitoshi Ogawa 1-7-4 Konan, Minato-ku, Tokyo Soni Corporation Shibaura factory (72) Inventor Koji Umezawa 1-7-4 Konan, Minato-ku, Tokyo Incorporated company Shibaura Factory (56) References JP-A-48-8213 (JP, A) Actually opened 56-64561 (JP, U) Actually opened 57-45066 (JP, U)

Claims (1)

[Claims] 1. A tape cassette inserted at a cassette insertion/removal position at which the tape cassette can be inserted/removed is engaged,
At the time of forward movement, the tape cassette is pulled in the horizontal and vertical directions to be mounted at the cassette mounting position, and at the time of backward movement, the tape cassette mounted at the cassette mounting position is returned in the vertical and horizontal directions to insert the cassette. A reciprocating cassette retracting mounting/discharging mechanism that holds the detached position, (b) a capstan drive motor that drives the capstan, and forward rotation of the cassette retracting mounting/discharging mechanism, A motor for driving the capstan that operates so as to return the cassette pull-in/out mechanism by reverse rotation drive; (c) the cassette insertion/removal in which the tape cassette is engaged with the cassette pull-in/out mechanism Detecting means for detecting that the tape cassette is in a position, (d), in a state where the detecting means detects that the tape cassette is in the cassette insertion/removal position in which the tape cassette loading/ejecting mechanism is engaged, And a control circuit for driving the capstan drive motor in a forward rotation by operating a tape running operation switch by remote operation. The control circuit reversely drives the capstan drive motor by operating an eject operation switch. A cassette-type tape recorder configured so that it can be operated.