JPH0834016B2 - Auto-reverse type tape player - Google Patents

Description

TECHNICAL FIELD The present application relates to an auto-reverse type tape player.

2. Description of the Related Art Conventionally, in an auto-reverse type tape player, a tape player in which looseness of the tape is removed when a cassette is loaded and then the tape is run and reproduced is known, for example, from Japanese Patent Publication No. 58-26089.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, according to the above-mentioned conventional configuration, since the tape slack is removed by using the tape end detection means, when the cassette is loaded and the tape slack is removed, Since the tape end detection means is activated to switch the running direction of the tape, for example, in a non-play state where the tape player is waiting in the rewind direction of the tape, the cassette is loaded and the tape When the slack is removed and the tape end detection means is activated, the tape running is switched to the forward direction, so there is no problem in running the tape, but the cassette is ejected during playback and waits in the tape forward direction. In a non-playing state,
When the cassette is loaded again, the slack in the tape is removed and the tape running is switched to the rewind direction.Therefore, when the cassette is loaded, whether the tape running direction is the forward direction or the rewind direction. It has the inconvenience of becoming unclear, and the conventional configuration has
Since the switch and the electromagnetic plunger are used for the operation, there is a defect that the switch is expensive and large in size.

Means for Solving the Problem In order to remedy the above-mentioned defects of the prior art, the present application detects the tension state of the tape when the tape reaches the end position and the reel side of the tape feeding side stops and detects the channel tension. In a tape player of an auto-reverse system in which a switching member is operated to each of a first switching position for setting a rewinding direction of a tape and a second switching position for setting a forward direction of the tape to switch a traveling direction of the tape. , When the channel switching member is moved to the first and second switching positions, the moving means is moved to the first operating position and the second operating position, respectively, and the drive motor is rotated by loading the cassette in the non-playing state. , A transmission means for transmitting the rotation to one reel stand, a restraining means for restraining the rotation of the other reel stand in a non-play state, and a non-rotating head plate. The holding means for holding the play position and the moving means are the second
And a releasing means for releasing the restrained state of the restraining means and the held state of the holding means, respectively, and permitting the rotation of the other reel stand and the movement of the head plate to the play position. In the above description, in the above description, the moving means has one end connected to the channel switching member, and the actuating cam movable in the facing direction of the pair of reel stands by the engagement of the elongated hole and the pin. A plate, the transmission means is tiltable between a pair of reel bases and a pair of flywheels that rotate in a relative direction by a drive motor, and when the play state is restored to the non-play state, one of The restraint means is rotatably attached to the head plate and is constantly supported by one of the transmission pieces that mesh with the reel stand and one flywheel corresponding to the reel stand. And a restraining portion that is engaged with the other reel base by the rotational bias at the non-playing position of the head plate and is released from the meshed state while the head plate moves to the playing position. One end of the holding means is rotatably supported by the head plate and is urged to rotate in one direction, and the other end is attached to a fixed part such as a substrate at a non-play position of the head plate. It consists of a lock piece with a locking projection that locks in the direction of rotation bias,
Further, the releasing means is rotatably attached to one end of the actuating cam plate, the regulating piece urged in one direction is rotatably supported, and the one end is rotatably supported by the head plate in one direction. When the actuating cam plate is urged to rotate and the actuating cam plate moves to the second actuating position at the non-play position of the head plate at the other end, the actuating cam plate is pressed by the restricting piece to rotate against the urging force. When moving the head plate back to the non-play position, the head piece rotates in the restoring direction to rotate the restriction piece against the rotation urging force and the rotation urging force. When the lock portion is rotated against the lock member, the lock portion is formed of an intermediate portion having an engaging portion that rotates in a direction in which the locking projection is disengaged from the fixing member. The biasing springs of the piece and the restraint piece are made common, and the intermediate piece and the lock member are , Which is constituted of a single member.

Therefore, when the cassette is loaded while the tape player is waiting in the tape rewinding direction in which the channel switching member is in the first switching position and the moving means is in the first operating position, the operation of the cassette is changed. The drive motor rotates by loading, and the rotation is transmitted to one reel stand via the transmission means, the reel stand is rotated, and the tape is rewound, but the head plate is held in the non-play position by the holding means. Since the rotation of the other reel base is restrained by the restraining means, the tape is strained and its slack is removed. This tension is exactly the same as when the tape reaches the end position,
Therefore, the channel switching member operates from the first switching position to the second switching position, and the running direction of the tape is switched from the rewind direction to the forward direction.

Then, the movement of the channel switching member to the second switching position moves the moving means to the second operating position, so that the releasing means operates and the holding state of the holding means and the restrained state of the restraining means are released. As a result, the head plate moves to the play position, rotation of the other reel base is allowed, and the tape travels in the forward direction and is wound on one reel base.

Next, the channel switching member is in the second switching position,
As a result, when the cassette is loaded while the tape player is waiting in the tape forward direction in which the moving means is in the second operation position, the drive motor rotates, and the rotation is transmitted through the transmission means as described above. Similarly, the tape is fast-forwarded by being transmitted to one reel stand and rotating the reel stand, but the head plate is held in the non-play position by the holding means, and the other reel stand is held by the restraining means. Because its rotation is constrained by, the tape tensions and the slack is removed. The tension of the tape causes the channel switching member to move from the second switching position to the first switching position to switch the tape from the forward direction to the rewind direction.

Then, since the moving means moves to the first position due to the switching of the channel switching member to the first switching position, the releasing means does not operate, so that the restraining means and the holding means are also placed at the current position.

In this state, as described above, when the tape player is waiting in the tape rewinding direction with the channel switching member in the first switching position and the moving means in the first operating position, the cassette is loaded. Equivalent to loading, so that the tape is re-tensioned and the channel switching member again switches from the first switching position to the second switching position. Therefore, the tape runs in the forward direction by the same action as described above.

In the above description, the releasing means is rotatably attached to one end of the actuating cam plate, and the regulating piece urged in one direction is rotatably supported by the head plate. , Is urged to rotate in one direction, and at the other end, when the operating cam plate is moved to the second operating position at the non-playing position of the head plate, is pressed by the restriction piece,
While turning against the turning biasing force, when the head plate returns to the non-play position, it turns in the restoring direction,
When the regulating piece is rotated against the rotation biasing force and the rotation biasing force, the lock piece is disengaged from the fixing member by the locking projection. When the operating cam plate is moved to the second operating position, the restricting piece abuts against the receiving piece of the intermediate member, and the intermediate portion includes the intermediate portion having the engaging portions that rotate in the direction. When the piece is rotated against the biasing force, the locking portion is also rotated in the same direction by the engaging portion against the biasing force, so that the engagement between the locking projection of the lock piece and the fixing member. When the stop is released, the head plate moves to the play position, and with the movement, the restrained state of the restraining piece is also released, and the rotation of one reel base is allowed. Then, when the head plate is moved to the non-play position from the play state by the eject operation, the locking projection of the lock piece is again locked to the fixed member, and the restraining piece rotates the other reel base. Restrain the lock piece and restore the intermediate piece as well. Then, when the operating cam plate is in the second operating position and the intermediate piece is restored, the receiving piece collides with the restricting piece, and the restricting piece rotates on the operating cam plate against the biasing force. The pivoting state is released when the actuating cam plate is moved to the first actuating position, and the regulating plate is restored.

Examples Examples of the present application will be described in detail below with reference to the drawings.

1 and 2 are plan views in a non-playing state showing a main part, in which a head plate (1) is provided with a capstan bearing (3) and an elongated hole (4) on a substrate (2). Through the engagement between the long hole (4) 'provided in the base plate (2) and the projection (3)' provided at the end of the head plate (1), and can be laterally moved in the horizontal direction. It is composed of an installed leftward L-shaped plate, and a head (5) is provided at the center position of its vertical side (1) a. The head plate (1) moves forward in the cassette direction (leftward direction) when the cassette is loaded in the cassette holder and set in the play position. The tilting plate (7) is pivotally attached (6) to the head plate (1) at a central position of its vertical side (1) a and extends leftward.
Is provided (see FIG. 6), and therefore this tilting plate (7)
Also moves leftward with the head plate (1) during play. The tongue piece (7) 'extending to the left free end of the tilting plate (7) has an upward protrusion (8) protruding upward.
And a downward projection (9) projecting downward are spaced in the longitudinal direction, and the downward projection (9) is located inside.
Is a guide groove (1 provided on the substrate (2) in a non-playing state.
It is located inside 0), and the lateral movement of the tilting plate (7) is guided by the engagement between the guide groove (10) and the downward projection (9). At the left position of the tilting plate (7), two actuating cam plates (11) having substantially the same shape and long in the front-rear direction,
The (12) is mounted on the substrate (2) so as to be movable back and forth through the engagement of the pin (13) and the long hole (14) in a superposed state. The upper actuating cam plate (11) has a laterally long engaging hole (15) that engages with the upward protrusion (8), and the lower actuating cam plate (12) has a V-shape at the left position. A home-base-shaped opening (17) having an inclined portion (16) for closing is provided. Therefore, when the tilting plate (7) moves leftward together with the head plate (1), a downward projection is formed. (9) disengages from the guide groove (10), and then the upward protrusion (8) abuts the valley of the inclined portion (16) of the opening (17) to prevent its forward movement, and In the moving process, the upward projection (8) is in sliding contact with one of the hypotenuses, and the sliding contact action causes the tilting plate (7) to tilt clockwise in the figure with the pivotal portion (6) as a fulcrum. At the right side of the upper surface of the tilting plate (7), a spring (18) extending in the front-rear direction and having a center line bent into a V-shape is provided.
The tip of a and the action pieces (18) b, which extend forward and backward respectively.
(18) c and (18) c are supported by being engaged with the folded pieces (19), respectively (see FIG. 2).
8) The tip of c is engaged with the free ends of the brackets (20) and (21) symmetrically arranged at the front and rear positions of the head (5). The free ends of the brackets (20) and (21) have pinch rollers (24) and (25) that come into contact with and separate from the capstan shafts (22) and (23), respectively, and the bases are They are rotatably mounted on the substrate (2) by means of pivots (26) and (27). Therefore, the tilting plate (7) is moved leftward together with the head plate (1), and the upward protrusion (8) is slidably contacting one oblique side of the tilted portion (16), so that the tilting plate (7). When the tilting motion is performed clockwise, the rearwardly-moving bracket (21) is rotated in the direction of the corresponding capstan shaft (23), and the pinch roller (25) moves the capstan shaft (25). 23) pressure contact. On the other hand, due to the inclination of the tilting plate (7), the bracket (20) located in the front rotates in a direction away from the corresponding capstan (22), so that the pinch roller (24) of the bracket (20) moves. ), The play state shown in FIG. 3 is formed, and the tape runs in the rewind direction and is wound on the reel stand (46) at the rear position.

The above-mentioned capstan shaft (22) at the front position is provided with a channel switching member (30) rotatable about this as a fulcrum. This channel switching member (30) has a step (3
0) 'and extends to the left through the extension (30)
A sliding hole (31) extending in the longitudinal direction is provided at the end of a, and an eccentric pin (33) provided on the surface of the notch gear (32) engages with this sliding hole (31). In addition, the channel switching member (30) has the first position for each half rotation of the notch gear (32).
And the second switching position are alternately selected. A protrusion pin (34) is provided at an intermediate position of the channel switching member (30), and the protrusion pin (34) extends in the lateral direction provided at the front end of the lower operation cam plate (12). It is engaged with the engaging hole (35), and therefore, this actuating cam plate (1
2) is when the channel switching member (30) reaches the first switching position which is the rewind direction shown in FIG.
When the tape is held in the first operating position in the front and reaches the second switching position in the forward direction of the tape indicated by the phantom line in FIG. 9, the tape is held in the second operating position in the rear, whereby the tilting plate (7 ), The tilting direction of the slanting part (16) of the upward protrusion (8) in sliding contact changes symmetrically, whereby the tilting direction of the tilting plate (7) and the pinch rollers (24), (25),
The pressure contact relationship with the capstan shafts (22) and (23) is switched, and the running direction of the tape is also switched.

Further, when the channel switching member (30) is in the first switching position and the lower operating cam plate (12) is in the first forward operating position as shown in FIG. 3, the operating cam is moved. The front first projection piece (36) provided on the plate (12) is provided on one idler arm (38) rotatably supported about the shaft of one reel base (37) as an engaging piece ( 39) and one of the idler arms (38) is urged to rotate counterclockwise in the figure against the restoring spring (40) thereof, whereby one of the idler arms (38) is rotated. One idler (42) provided on the other side and always meshed with one reel gear (41) is disengaged from one drive gear (43), and one reel stand (37) is not driven. And the rear second rear side provided on the lower operation cam plate (12).
The protruding piece (45) releases the constraint of the engaging piece (48) provided on the other idler arm (47) rotatably supported about the shaft of the other reel base (46), and the other The idler arm (47) is urged to rotate counterclockwise in the figure by the restoring spring (49) thereof, whereby the idler arm (47) is provided on the other idler arm (47) and the other reel gear (50). The other idler that always meshes (51)
, Meshes with the other drive gear (44), and the other reel base (46) is brought into a driven state. Therefore, in this state, the tape is wound on the reel stand (46) side.

The above is a detailed description of the operation when the channel switching member (30) is in the first switching position and the lower operating cam plate (12) is in the first forward operating position as shown in FIG. As described above, when the channel switching member (30) is in the second switching position and the lower operating cam plate (12) is in the second operating position as shown by the imaginary line in FIG. The operation is basically the same as that of the former case, and the operation relationship is symmetrical. Therefore, in the latter case, one reel stand (37) is driven and the other reel stand (46). ) Is not driven, and the tape is wound around the reel stand (37) by pressure contact between the capstan shaft (22) and the pinch roller (24). That is, the tape runs in the forward direction.

As described above, assuming that one of the reel bases (37) to (46) is in a driving state and the tape runs, for example, the tape is wound on the other reel base (46) side, As shown in FIG. 7, the other rotating piece (52) that is frictionally engaged with the reel base (46) and is rotatable coaxially with the reel base (46) rotates clockwise in the figure,
A tongue piece (52) 'provided on this is rotatable as a support shaft (53) at an intermediate position, and has a tongue piece (55) b at the rear end of a rotation detection bar (54) extending in the front-rear direction. The rotation detection bar (54) is urged to rotate counterclockwise in the figure. The abutment piece (55) a provided at the front end portion of the rotation detection bar (54) is laterally mounted on the board (2) through engagement of the guide shaft (56) and the long hole (57). The rotation detecting bar (54) has a distal end of a protruding piece (59) extending in the direction of the rotation detecting bar (54) abutting on the detection plate (58) movably and rotatably provided. Due to the counterclockwise rotation biasing force of the lock lever (64) and the auxiliary lever (11), the detection plate (58) is biased to the left by pressing force.
By the action of the biasing piece (65) and the pin (62) on the detection plate (58), the restoring spring (66) stretched over 3) restricts the leftward movement of the guide shaft (66). 56)
A clockwise turning force centered around is energized.

A laterally elongated cam hole (60) partially having a locking step (60) 'is formed at a position on the left side of the rotation center of the detection plate (58). The piece piece (61) that is always rotated counterclockwise is fitted. The outer peripheral surface of the piece (61) is formed on the detection plate (5
Because the clockwise turning force is applied to 8),
The cam piece (60) is held in pressure contact with one side surface of the cam hole (60), and in this state, the piece piece (61) freely rotates in the cam hole (60).

Then, in FIG. 7 showing the state of the tape in the rewinding direction in which the tape is wound on the other reel stand (46) side, the tape is sufficiently wound and the tape is positioned at the end, and the other reel is When the rotation of the table (46) stops, the rotation piece (52) frictionally engaged with the table (46) also stops rotation, so that the counterclockwise rotation urging force on the rotation detection bar (54) disappears. As a result, the clockwise urging force to the detection plate (58) also disappears, and the pressure contact state between the outer periphery of the piece piece (61) and the one side surface of the cam hole (60) is released. The rotation of the piece piece (61) causes the detection plate (58) to rotate counterclockwise due to the sliding contact between the projection (61) 'of the piece piece (61) and one side surface of the cam hole (60). As a result, as shown in FIG. 8, the piece piece (61) is
Of the detection plate (58) by engaging the projection (61) 'with the locking step (60)' provided on the other side surface of the cam hole (60).
Moves temporarily to the left in the figure against its restoring elasticity.

Therefore, due to this movement, the pin (62) provided on the detection plate (58) is urged to extend rearward from the center of the V-shaped lock lever (64) that rotates about the middle of the support shaft (63). By acting on the piece (65), the lock lever (64) rotates clockwise in the figure against the restoring spring (66).

Then, the locking claw that is provided at one side end of the lock lever (64) and that locks with the locking portion (32) 'provided on the notch gear (32) to restrain its rotation. When the notch gear (32) is disengaged, the notch gear (32) is engaged with the second drive gear (69) by the initial rotational force applied by the spring (68), and the notch gear (32) makes a half rotation. This half rotation causes the channel switching member (30) to switch from the first switching position to the second switching position, as already described.
The traveling direction of the tape is switched and the tape travels in the forward direction.

The above has described in detail the state in which the tape is wound on the other reel stand (46) side and the action when the tape reaches the end in this state. The action when the tape reaches the end in the state in which the tape is wound up and in this state is basically the same as the above case.

That is, when the tape is wound on one reel base (37) side in the forward direction, that reel base (37)
One rotating piece (71) that is frictionally engaged with and is rotatable coaxially therewith rotates in the counterclockwise direction in FIG. 7, and the tongue piece (71) ′ provided on it rotates. , Comes into contact with the abutment piece (55) a provided at the front end of the rotation detection bar (54) to bias the rotation detection bar (54) in a counterclockwise direction. The operation of is the same as the above-mentioned case.

In FIGS. 7 and 8, (72) and (73) are the tongue pieces (71) ′ of the rotating piece (71) and the tongue piece (5) of the rotating piece (52).
It is a stopper of 2) ′.

In FIG. 3, fast-forwarding and rewinding levers (75) and (76) are arranged side by side on the right upper surface of the substrate (2) so as to be movable back and forth. These levers (75) and (76) consist of long plates of similar shape (see Fig. 11), and are always rearward (toward the front) by springs (77) and (78), respectively.
It is being oppressed.

In the play state, when one lever (75) is pressed against the spring (77) for rewinding the tape, for example, it moves forward, and the forward movement state is as shown in FIG. , In the front position of the lever (75), the pivot (79)
Locking member (80) attached so as to be horizontally rotatable via
Held by That is, in the locking member (80),
It has a vertical locking piece (81) protruding rearward, and is provided at the front end portion of the one lever (75) in the locking hole (82) provided in this locking piece (81). The V-shaped locking part (83)
It is held by being locked.

Further, when one lever (75) moves forward, an engaging hole (84) formed in the lever which is long in the forward direction and an L-shaped engaging piece (85) ′ with which the tip folding piece (85) ′ is engaged. The rotating piece (85) rotates counterclockwise around the pivot (86) as a fulcrum, and the protrusion (85) a integrally provided on the lower surface of the rotating piece (85) forms a right edge portion of the head plate (1). Abutting the bent piece (87) provided on the
Move the head plate (1) back slightly to the right (5th
See figure).

Therefore, in this state, in the play state, the other pinch roller (2
5), but will be separated from each other.

Furthermore, the middle of the second engaging hole (88) provided in one lever (75) is pivotally attached to the base plate (2) by the pivot shaft (89), and the upward folding pieces are provided at both ends. The upward folding piece (90) a of the interlocking piece (90) having the (90) a and the downward folding piece (90) b are engaged with each other, and therefore, the lever (75) of one side is engaged.
When the forward movement is performed, the interlocking piece (90) rotates clockwise and is movable in the front-back direction with respect to the board (2) engaged with the downward folding piece (90) b of the interlocking piece (90). The interlocking rod (91), which is freely provided and is long in the front-rear direction, moves rearward.

A transmission piece (94) whose base end is pivotally attached (93) to the base plate (2) and extends leftward is connected to an intermediate position of the interlocking rod (91) via a spring (92), A movable plate (97) provided so as to be movable back and forth is connected to the free end of the movable plate through the engagement of the pin (95) and the long hole (96). On the (97), the rotation of one flywheel (98) is transmitted to the one reel stand (37),
Alternatively, a fast-forward rotating wheel (100) that transmits the rotation of the other flywheel (99) to the other reel stand (46) is supported.

Therefore, when one lever (75) is moved forward, as shown in FIG. 5, the transmission plate (94) is tilted in the clockwise direction, and the fast-forwarding rotary wheel (100) moves to one fly. The reel base (37) rotates at high speed in conjunction with the wheel (98) and one reel base (37) to fast forward the tape to the reel base (37).

Further, when the other lever (76) is pressed against the spring (78) in order to fast forward the tape in the running direction of the tape, as shown in FIG. The stopper (101) is the locking piece (81) of the locking member (80).
It is locked in the locking hole (82) provided in the and the forward movement state is maintained. When the other lever (76) moves forward,
The protruding piece (102) provided on the rotating piece (85) comes into contact with the tip folding piece (85) 'of the rotating piece (85), and the rotating piece (85) rotates counterclockwise. Since the head plate (1) slightly returns to the right in the same manner as described above, the pinch roller (25) is slightly separated from the capstan (23).

Furthermore, the second protrusion (103) provided on the other lever (76) comes into contact with the downward folding piece (90) b of the interlocking piece (90), so that the interlocking piece (90) is reversed. Rotate clockwise,
The interlocking rod (91) moves forward, whereby the transmission piece (94) tilts counterclockwise, and the moving plate (97) moves rearward so that the fast-forwarding rotary wheel (100) moves to the other side. Link the flywheel (99) with the other reel stand (46),
Rotate the reel stand (46) at high speed to transfer the tape to the reel stand (4
6) Fast forward to the side.

Further, in the above-mentioned pulley state, when the channel switching operation is performed manually, the fast-forward and rewind levers (75) and (76) are set to the respective springs (77) and (78).
And push them at the same time. Then, a notch (105) 'provided at the tip extension (105) of the lever (75) and a notch (106)' provided at the tip extension (106) of the lever (76) facing the notch (105) '. Lock member (10) rotatably supported by the pivot (26) of the bracket (20).
7) is rotated counterclockwise in FIG. As shown in FIG. 11, the lock member (107) has a rocking piece (108) which vertically projects to an upper position separated from the rotating portion and which can rock in a limited range in the left-right direction. , Also, at the bottom, it extends horizontally to the left and has a forked part (10
9) each having an arm (110) and thus,
Due to the notches (105) 'and (106)', the swinging piece (108) is pressed forward without swinging in the left-right direction (in this state, the locking portion (83)). And (10
1) is not locked in the locking hole (82) of the locking piece (81)).
Then, the lock member (107) rotates counterclockwise against the restoring spring (111), and as a result of this rotation, as shown in FIG. 109)
Collide with a pin (112) provided on the other side end of the lock lever (64), and the lock lever (64) rotates clockwise against the restoring spring (66). Therefore, the locking claw (67) provided on one side end of the locking gear (32) 'provided on the notch gear (32) is disengaged, and the notch gear rotates. Become.

Therefore, as already described, the half rotation of the notched gear (32) causes the channel switching member (30) to move to the third and fourth portions.
Switching is relatively performed between the first switching position shown in the figure and the second switching position shown in FIG.

In the figure, (113) acts as a pair with the lock lever (64) and acts on the forked portion (109) of the lock member (107) to restrict the rotation of the notched gear every half rotation. It is an auxiliary lever to do.

The above is the action of the head plate (1) moving from the non-playing state to the playing state, the action of switching the tape running direction when the tape reaches the end position, the fast feeding,
Although the operation during the rewinding operation and the operation for changing the running direction of the tape by the manual operation have been described respectively, the present application uses the tape end detection mechanism in the above-described configuration to prevent the slack of the tape at the time of loading the cassette. The present invention is characterized in that the tape can always be started in the forward direction regardless of the tape winding direction set when the cassette is loaded.

That is, in the above-described structure, the lower end of the lower working plate (12) is provided with the extension piece (120) extending in the longitudinal direction, and the intermediate portion of the restricting piece (121) is provided with the extension piece (120) on this surface.
It is attached by 2). The restricting piece (121) is pressed by a spring (123) to a folding piece (120) 'provided on the extension side (120) so that one side of the restricting piece (121) can rotate, and the rear end portion is A push piece (124) is provided.

On the side of the side (1) b of the head plate (1), as is apparent from FIG. 16, the lock piece (126) and the intermediate piece (127) are overlapped by the common pivot (125). Each of the left ends is pivotally attached in the state of being.

The lock piece (126) extends rightward along the lateral side (1) b of the head plate (1), and has a rear surface formed in an arc shape at the right end thereof so as to project from the front edge thereof. A stop projection (126) a and a tongue piece (126) b extending rightward through a step are provided, and an intermediate piece (127) also extends rightward and at the right end thereof, Engagement portion that is provided by bending the receiving piece (127) a at the front edge, with the rear edge protruding from the right end of the lock piece (126) and the rear edge abutting the front edge of the tongue piece (126) b. (127) b is provided, and the lock part side (126) is urged to rotate in one direction between the lock part piece (126) and the lateral side (1) b of the head plate (1). Spring (129) for pressing and locking the locking projection (126) a to the projection (128) provided on the substrate (2), and the intermediate piece (127) and the restraining piece (130) described later. ) Ring (131) are respectively tension.

The restraining piece (130) has an intermediate portion pivotally attached (132) to the lateral side (1) b of the front head plate (1) and extends orthogonally, and has a front end that meshes with the reel stand (46). There is provided a meshing part (130) a and a contacting part (130) b which comes into contact with the tooth tip, and the meshing state thereof is biased by the spring (131), and the contacting part (130) b is moved to the reel stand. It is held in contact with the tooth tip of (46).

The restraint piece (130) restricts rotation of the reel stand (46) in the tape feeding direction, and rotation in the winding direction is allowed by the spring (131).

Furthermore, an intermediate portion is rotatably supported at a lower end of a pivot shaft (27) having a base portion of a rear bracket (21) pivotally attached to a substrate (2), and the head plate (1) is provided at one end thereof. An abutting piece (133) a that abuts the rear end of the branch piece and a branch piece (13) that extends in the direction perpendicular to the abutting piece (133) a at the other end.
3) Ring pieces (133) each having b are rotatably supported, and the branch pieces (133) b and the interlocking rod (91) described above.
A spring (134) that stretches the interlocking rod (91) rearward is stretched between and. In addition, (135) is a stopper piece that is slidably mounted in the front-rear direction on one of the fast-forwarding / rewinding levers (75) and abuts with one upward folding piece (90) a of the interlocking piece (90). The weak spring (136) biases the interlocking piece (90) in the neutral position.

Next, the operation will be described in detail. FIG. 12 shows a state in which the channel switching member (30) is in the first switching position in the rewinding direction of the tape and the tape player is on standby. , The locking projection (126) a of the lock piece (126) is locked to the projection (128) provided on the substrate (2) to hold the head plate (1) in the non-play position,
In addition, the meshing portion (13) of the restraining piece (130) pivotally attached to the lateral piece (1) b of the head plate (1) and at a right angle thereto.
0) a meshes with the reel table (46) at the rear, and the reel table (4
Since the rotation of 6) is restrained and the contact piece (133) a is in contact with the end edge of the head plate (1),
The interlocking rod (91) moves rearward via the spring (134), the interlocking piece (90) inclines clockwise, the transmission plate (94) inclines clockwise, and the transmission plate (94) further inclines. Due to the inclination, the fast-forwarding rotary wheel (100) meshes with the front flywheel (98) and the reel stand (37). This state is exactly the same as the state where the forward feed and rewind lever (75) were pressed, so when the cassette is loaded from this state,
The drive motor is rotated by the loading, and the rotation of the drive motor is performed from the flywheel (98) at the front position through the rapid-feed rotating wheel (100) to the reel stand (37) at the front position (in the embodiment, the tape winding in the rewind direction). The reel base (37) rotates at high speed.

However, since the rotation of the rear reel stand (46) is restricted by the engagement with the engagement part (130) a of the restraint piece (130), the tape is rewound to the reel stand (37) side. Then, the tension is removed and the slack is removed.

Then, as described above, the rotation detecting lever (54) is activated by the tension action of the tape, and the traveling direction of the tape is switched.

That is, as shown in FIG. 15, when the reel base (37) stops rotating while the tape is wound on the reel base (37) in the front, the rotation of the reel base (37) is frictionally engaged with the reel base (37). Since the rotation of the moving piece (71) is also stopped, the counterclockwise rotational urging force on the rotation detection lever (54) disappears, which causes the notch gear (32) to make a half rotation and the channel switching member (30).
Switches from the first switching position to the second switching position.

On the other hand, the channel switching member (30) moves from the first position to the second position.
Since the lower operation cam plate (12) is moved rearward by switching to the switching position of, the restriction piece (121) provided on the extension piece (120) is provided on the intermediate part piece (127). The abutment piece (127) a abuts, and the intermediate piece (127) is a spring (13).
It rotates clockwise against 1), and the rotation causes the engagement part (127) b and the tongue piece (126) b to come into contact with each other so that the lock part piece (126) also becomes the spring (129). Rotate clockwise against.

By rotating the locking piece (126) clockwise, the locking between the locking projection (126) a and the projection (128) is also released, so that the head plate (1) is not shown in the drawing. It is guided to the play position by a spring that constantly presses in the play direction. The restraint piece (130) moves together with the head plate (1) and separates from the reel stand (46),
The spring (131) rotates clockwise in the drawing to disengage the meshing portion (130) a from the reel base (46), and allows the reel base (46) to rotate.

Therefore, in the play state, the pinch roller (24) is pressed against the front capstan shaft (22), so that the tape runs in the forward direction and is wound up on the front reel stand (37).

That is, when the cassette is loaded in the non-playing state of the tape in the rewind direction, the tape is rewound once by the rotation of the drive motor to remove the slack of the tape,
The tension of the tape at that time causes the channel switching member (30) to switch from the first switching position, which is the rewind direction of the tape, to the second switching position, which is the forward direction thereof, via the rotation detection lever (54). Instead, the tape enters the play state and the tape runs in the forward direction.

That is, the state shown in FIG. 13 is reached, and in this state,
Since the contact piece (133) a of the ring piece (133) is separated from the end edge of the head plate (1), the spring (134) rotates counterclockwise and the biasing force of the spring (134) disappears. Therefore, the interlocking piece (90) is restored to the neutral position by the urging force of the stopper piece (135).

Then, with the tape running in the forward direction,
When the eject operation is performed, for example, a cam plate (not shown) provided on the eject member is attached to the lateral side (1) of the head plate (1).
By press contacting the trochanter (3) 'provided at the tip of a,
The head plate (1) retracts to the right against the spring.

Then, as the head plate (1) retracts, the lock piece (126) and the intermediate piece (127) also move in the same direction, and in the course of the movement, the locking projection provided on the lock piece (126). (1
26) The back surface of a collides with the protruding piece (128), and the lock piece (1
26) temporarily turns clockwise against the spring (129), and then the locking projection (126) a and the projection (128) are locked so that the head plate (1) is in the non-playing position. On the other hand, the receiving piece (127) a of the intermediate portion piece (127) is held by the regulating piece (12).
Since it abuts against the pushing piece (124) of 1), the control piece (121) is counterclockwise against the spring (123) because the lower operation cam plate (12) is moved backward. Is held in a tilted state, and the engaging portion (1) of the restraining piece (130) is also held.
30) a meshes with the rear reel stand (46).

That is, the state shown in FIG. 14 is entered, and the tape player enters the standby state in the forward direction of the tape. In this state, the ring piece (133) again rotates clockwise and the transmission piece (94) rotates clockwise. Tilting and fast-forwarding rotary car (100)
Mesh with the front flywheel (98) and reel stand (37).

Next, when the cassette is loaded from the state shown in FIG. 14 in which the tape player stands by in the tape forward direction, as described above, the drive motor rotates from the front flywheel (98) to the fast-forward rotation vehicle. It is transmitted to the preceding reel stand (37) via (100), and the reel stand (37) rotates at high speed.

However, the rear reel stand (46) has a restraining piece (13
Since the rotation is blocked by the meshing with the meshing part (130) a of (0), the tape is tensioned and the slack is removed.

Then, as described above, the rotation detecting lever (54) is activated by the tension action of the tape to switch the traveling direction of the tape.

On the other hand, when the channel switching member (30) is switched to the first switching position, the lower operation cam plate (12) moves forward, so that the counterclockwise inclination of the regulating piece (121) is released. , The head plate (1) still has the locking projection (126) a of the lock piece (126) and the projection (12) of the substrate (2).
Since it is held in the non-playing position by locking with 8), it returns to the state shown in FIG.

Therefore, the same operation as when the cassette is loaded in the state shown in FIG. 12 is performed.

That is, when the channel switching member (30) is switched to the first switching position and brought into the state shown in FIG. 12, the front reel stand (37) is rotated by the drive motor and the rear reel stand (4) is rotated.
Since 6) is restrained by the meshing portion (130) a of the restraining piece (130), the tape is strained, and the tensioning action causes the channel switching member (30) to move from the first switching position to the second switching position again. When the head plate (1) reaches the play position, the pinch roller (24) press-contacts the front capstan shaft (22), and the tape is moved to the front reel stand (37). ). That is, the tape runs in the forward direction.

That is, when the cassette is loaded in the non-playing state in the forward direction, the tape is fast-forwarded by the rotation of the drive motor to remove the slack of the tape, and the tension of the tape at that time causes the rotation detection lever (54) to operate. Then, the channel switching member (30) is switched from the second switching position to the first switching position to tension the tape again, and due to the tensioning action of the tape, the rotation detection lever (54) again.
Is operated to switch the channel switching member (30) from the first switching position to the second switching position.

In the above embodiment, the lock piece (126) and the intermediate piece (1
27) and are provided on the head plate (1), and the intermediate piece (12
When the receiving piece (127) a of 7) is pressed rearward by the pressing piece (124) of the regulating section piece (121) and the intermediate piece (127) is rotated clockwise, the engaging section (127) b. And the tongue piece (126) b are brought into contact with each other, the lock piece (126) is also rotated in the same direction, and the back surface of the locking projection piece (126) a of the lock piece piece (126) is protruded (12
When the lock piece (126) rotates clockwise in the abutment with 8), the engaging piece (127) b and the tongue piece (126) b come into contact with each other so that the intermediate piece (127) moves in the same direction. Although the case where it is configured to rotate to the above is shown, by providing the locking projection (126) a and the receiving piece (127) a in the same piece, as shown by the phantom line in FIG. 16, It goes without saying that the lock piece (126) and the intermediate piece (127) may be composed of a single piece.

EFFECTS OF THE INVENTION Since the present application is configured as described above, slackening of the tape can be achieved by loading the cassette regardless of whether the tape player is in the standby state in the tape forward direction or the rewind direction. After removing the above, the tape can be always run from the forward direction, and since the switch and the electromagnetic plunger are not used, there is an advantage that the tape can be obtained at low cost and the size can be reduced.

[Brief description of drawings]

1 to 11 show a configuration before improvement in the present application, and FIG. 1 is a plan view of a main part in a non-playing state,
2 is a simplified plan view of FIG. 1, FIG. 3 is a plan view of an essential part in a playing state, FIG. 4 is a plan view of an essential part in a rewinding state, and FIG. 5 is FIG. A further simplified plan view, FIG. 6 is a plan view in the fast-forwarding state corresponding to FIG. 5, FIGS. 7 and 8 are plan views of the essential portions showing the operation relationship of the detection plate, and FIG. 9 is the end of the tape. Position of the tape direction switching operation when reaching the position, Figure 10 is a plan view of the main section showing the tape operation direction switching operation relationship by manual operation, Figure 11 is fast forward, rewind FIG. 12 to FIG. 16 show perspective views of the lever and the lock member, and FIG. 12 to FIG. 16 show the structure after improvement, and FIG. 12 is a plan view of essential parts corresponding to FIG. 1 showing a non-play state in the rewind direction. , FIG. 13 is a plan view of an essential part corresponding to FIG. 9 showing a play state in the forward direction, and FIG. FIG. 15 is a plan view of an essential part showing a non-playing state in the play direction, FIG. 15 is a plan view of an essential part showing the operation relationship of the detection plate, and FIG. 16 is a lock part piece, an intermediate part piece, a head plate and It is a perspective view showing the relation with a restraint part. In the figure, (1) is a head plate, (7) is a tilt plate, and (1
1) and (12) are actuating cam plates, (20) and (21) are brackets, (22) and (23) are capstan shafts, (24) and (25)
Is a pinch roller, (30) is a channel switching member, (31)
Is a sliding hole, (32) is a notched gear, (33) is an eccentric pin, (3
7) and (46) are reel stands, (41) and (50) are reel gears, (42) and (51) are idlers, (54) is a rotation detection bar, (58) is a detection plate, and (60) is a cam. Hole, (61) piece piece, (64) lock lever, (75) and (76) fast forward / rewind lever, (80) locking member, (81) locking piece, (83) Is a locking part, (85) is a rotating piece, (90) is an interlocking piece, (91) is an interlocking rod, (94) is a transmission piece, (97) is a moving plate, and (98) and (99) are flywheels. , (100) is a fast-forwarding rotary wheel, (120) is an extension piece, (121) is a restriction piece, (12
3) is a spring, (126) is a lock piece, (126) a is an engaging protrusion, (126) b is a tongue piece, (127) is an intermediate piece, (127) a
Is a receiving piece, (127) b is an engaging portion, (130) is a restraining piece, and (13)
0) a is a meshing part, (133) is a ring piece, (133) a is a contact piece, and (133) b is a branch piece.

Claims (8)

[Claims] 1. When the tape reaches the end position and the reel base on the feeding side of the tape stops, the tension of the tape is detected and the channel switching member is set to the first switching position for setting the rewinding direction of the tape. , A channel switching member is moved to the first and second switching positions in an auto-reverse type tape player that operates to the second switching position for setting the forward direction of the tape and switches the traveling direction of the tape. When the driving motor is rotated by loading the cassette in the non-playing state, the moving means is moved to the first operating position and the second operating position, respectively, and the transmission means for transmitting the rotation to one reel stand and the non-playing state. In the state, the restraining means for restraining the rotation of the other reel base, the holding means for holding the non-play position of the head plate, and the moving means are the second operating position. And a releasing means for releasing the restrained state of the restraining means and the held state of the holding means, respectively, and permitting the rotation of the other reel stand and the movement of the head plate to the play position. An auto-reverse type tape player. 2. The moving means comprises an actuating cam plate, one end of which is connected to the channel switching member, and which is movable in the facing direction of the pair of reel stands by engagement of the elongated hole and the pin. Auto-reverse type tape player. 3. A transmission means is tiltable between a pair of reel bases and a pair of flywheels that rotate in a relative direction by a drive motor, and when the play state is restored to the non-play state, one of 3. A tape player of the auto-reverse type according to claim 1 or 2, comprising a transmission piece that meshes with each reel stand and one flywheel corresponding thereto. 4. A restraint means is rotatably attached to a head plate and is always biased in one direction so that the restraint means meshes with the other reel base at the non-play position of the head plate by the rotary bias. 4. The tape player of the auto-reverse type according to claim 1, 2 or 3, which comprises a restraining piece that is released from the meshed state when the head plate moves to the play position. 5. A holding means, one end of which is rotatably supported by a head plate and is urged to rotate in one direction, and the other end of which is a fixed part such as a substrate at a non-play position of the head plate. 5. An auto-reverse type tape player according to claim 1, 2, 3 or 4, which comprises a lock piece having a locking projection that locks in the direction of rotational biasing. 6. A release means is rotatably attached to one end of the actuating cam plate, and a regulating piece urged in one direction is rotatably supported by the head plate. When the actuating cam plate is urged to rotate in one direction and the actuating cam plate is moved to the second actuating position at the non-play position of the head plate at the other end, the actuating cam plate is pressed by the restricting piece to exert its urging force. A receiving piece that rotates in opposition to the non-playing position of the head plate and that rotates in the restoring direction to rotate the regulating piece against the rotational biasing force. 6. A lock piece comprising: an intermediate piece having an engaging portion that rotates in a direction in which the locking projection is disengaged from the fixing member when the lock piece is rotated against the dynamic biasing force. Auto-reverse type tape player. 7. An automatic reverse type tape player according to claim 6, wherein the biasing springs of the intermediate piece and the restraining piece are common. 8. A release means is rotatably attached to one end of an actuating cam plate, and a regulating piece urged to rotate in one direction and one end rotatably supported by a head plate. When the actuating cam plate is urged to rotate in one direction and the actuating cam plate is moved to the second actuating position at the non-play position of the head plate at the other end, the actuating cam plate is pressed by the restricting piece to exert its urging force. A receiving piece that rotates in opposition to the non-playing position of the head plate and that rotates in the restoring direction to rotate the regulating piece against the rotational biasing force. When the lock portion piece is rotated against the dynamic biasing force, the lock portion piece is formed of an intermediate portion piece each having an engaging portion that is rotated in a direction in which the locking projection is disengaged from the fixing member. An auto-reverse type tape play according to claim 5, wherein the piece and the lock member are integrally formed. .