JP2531909B2 - Recording or playback device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation mode switching mechanism in a recording or reproducing apparatus equipped with a tape loading mechanism.

[0002]

2. Description of the Related Art Conventionally, in a device such as a rotary head type magnetic recording / reproducing device having a loading mechanism for pulling out a tape from a loaded cassette and loading it on a rotary head drum, switching control of each operation mode is performed. Becomes complicated.

That is, there are many mechanisms to be controlled, such as the loading mechanism, the drive and control mechanism of the reel stand, the drive mechanism of the capstan, the pinch roller crimping mechanism to the capstan, and the cassette ejection mechanism. The mechanism must be controlled with reliable timing according to each operation mode.

For this reason, conventionally, a method has been adopted in which a drive control system such as a motor and a plunger is independently provided for each mechanism, and the control is performed by electrically controlling these.

For example, if the configuration is such that switching control of contact / separation of the pinch roller with respect to the capstan, braking control of the reel stand, etc. is independently controlled by a plunger or the like, the number of parts increases and the configuration becomes It is difficult to use for a handy type rotary head type magnetic recording / reproducing apparatus because the apparatus becomes complicated, and the size and weight of the apparatus are hindered and the cost reduction is hindered.

Therefore, as a means for simplifying the drive control system by mechanically switching according to each mechanism and each operation mode described above, each mechanism operates mechanically in accordance with each operation mode. As described above, there is a system in which each switching control is performed by providing a mode control lever having a plurality of cam surfaces (hereinafter referred to as a mode lever). This makes it possible to control the drive of each mechanism without providing a drive system for each mechanism independently and without providing a complicated control circuit for electrically controlling them.

[0007]

However, in a device of the type which performs mechanical control by such a mode lever, the mode lever changes its position in the control order of each operation mode and every operation mode. However, there is a problem that it becomes difficult to downsize the device in the moving direction of the mode lever.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a recording or reproducing apparatus capable of downsizing the apparatus in the moving direction of the mode lever.

[0009]

In view of the above, in the present invention, attention is paid to the fact that the stop operation and the eject operation among a plurality of operation modes can be performed in the same state with respect to the tape drive system. Loading means for pulling out the tape from the cassette and mounting it on the head,
The mode switching means for moving the position in accordance with a plurality of operation modes, the cassette discharging means for making the cassette loaded in the cassette mounting portion ready for discharging from the cassette mounting portion, and the loading means for unloading And a control means for enabling the cassette ejecting means to operate by moving the mode switching means to a stop position corresponding to an operation mode for stopping the tape running when in the loading state. When the tape is moved to the stop position, the tape running stop operation and the cassette ejecting means can be selected depending on the loading state of the tape.

[0010]

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment in which the present invention is applied to a rotary magnetic head type magnetic recording / reproducing apparatus.

In each of the drawings, 1 is a chassis, 2 is a cassette mounting portion, 3S and 3T are supply reel bases, take-up reel bases having gears formed on their outer circumferences respectively, 4 is a capstan, 5 is a capstan motor, 6 is a light emitting element 6a
And a light receiving element 6b, 6c.

The loading mechanism will be described.
The rotary head drums 8 and 9 are mounted on the chassis 1 at a predetermined angle and are rotated at a high speed by a motor (not shown). It is a movable guide member wound around. This movable guide member 8,
A gear 9 is mounted on loading levers 10 and 11 which are interlocked with each other around the rotary head drum 7 and slide in opposite directions, and gears 12a and 12 which are constantly engaged with the respective levers.
b moves vertically in the figure in conjunction with each other. 8a, 8b, 9a, 9b are guide posts mounted on the respective movable guide members.

Reference numeral 13 denotes a mode lever which is moved in accordance with the operation mode switching operation and takes a position corresponding to each operation mode. The mode lever 13 is moved left and right by the elongated holes 13a and 13b and the pins 14a and 14b set up on the chassis 1. It is freely distributed.

Reference numeral 15 denotes a cam plate which moves the mode lever 13 in accordance with each operation mode, is rotatably mounted on a shaft 16 and is rotated to a position corresponding to the operation mode by a drive system (not shown). 8, a cam groove 151 for switching operation modes is formed, and a switch pattern 152 for detecting a rotational position shown in FIG. 8 is formed on the other surface.

Reference numeral 17 denotes a lever for transmitting the rotating operation of the cam disc 15 to the mode lever 13. A pin 17a at one end is inserted into the cam groove 151, and a pin 17b at the other end is connected to the mode lever 1.
The shafts 18 are rotatably arranged by the shafts 18 in a state of being respectively engaged with the long holes 13c at the left end of the shaft 3. Therefore, by rotating the cam disk 15 in accordance with the operation mode, the lever 17 is rotated by the cam groove 151, and the mode lever 13 is controlled to move to the switching position according to the left and right operation modes. I have.

FIG. 7 shows the engagement position of the pin 17a of the lever 17 in the cam groove 151 corresponding to each operation mode. In the figure, reference numeral 151a denotes an ejection position;
b is a take-up position before loading; 151c is an unloading position; 151d is a loading position; 151e is a fast-forward / rewind (hereinafter referred to as FF / REW) position;
1f is a stop position, 151g is a play position, 151h
Shows the reverse play position. Of these operations, the eject position 151a and the stop position 151f, the instantaneous FF position 151b and the FF / REW position 151e, the unloading position 151c and the loading position 151d are respectively on the shaft 16. On the other hand, they have the same diameter position. Therefore, even if the above-mentioned eight operation modes exist, the actual movement positions of the mode lever 13 are five.

The moving position of the mode lever 13 corresponding to each cam position is the leftmost position of the unloading and loading, that is, the loading operation state position 131a having the largest diameter on the cam disk 15, as shown in FIG. FF / REW and winding position 13 before loading
1b, a stop and eject position 131c, a play position 131d, and a reverse play position 131e are set at equal intervals to the right.

The pre-loading take-up mode will be described below.
During the loading operation, the supply reel base 3S is locked, and the tape is pulled out from the take-up reel engaged with the take-up reel base 3T.
If the tape is completely wound on the supply reel engaged with the supply reel base 3S, the loading operation cannot be performed. Therefore, if the tape end sensor 6 detects that there is no tape on the take-up reel side immediately before the cassette is loaded and the loading operation starts, the FF operation is performed for a predetermined time, and the loading operation on the take-up reel is started. The required amount of tape is wound up.

As shown in FIG. 8, the operation of the cam disc 15 to each of the operation mode positions and the position detection are performed as shown in FIG.
5 and the switch block S which is always in contact with the switch pattern provided on the apparatus-side fixing portion.

The switch pattern 152 is composed of a conductive portion indicated by oblique lines and another insulating portion. In the present embodiment, there are eight modes, so that four concentric tracks T1 to T4 and four switches S1 contacting each track are provided. To S4 so that only the switch that contacts the conductive part is turned on. Then, it is possible to determine each operation mode by changing the combination of patterns for each operation mode position, that is, the combination of ON and OFF switches.

Each of the switches S1 to S of the switch block S
The information detected by the combination of 4 is supplied to the control circuit CPU of the entire apparatus and decoded, and the cam disc drive system 100 is controlled based on this information.

Reference numeral 101 denotes an operation system including operation buttons (not shown), and reference numeral 102 denotes a sensor block including the tape end sensor 6, which supplies respective control and detection information to a control circuit CPU.

The upper and lower edges of the mode lever 13 are formed with cam portions 132a to 132g having a plurality of projections and recesses, and the right end is formed with an engagement portion 132h. As will be described in detail later, 132a is a pinch roller pressure contact cam, 132b is a soft brake control cam for applying a back tension to the take-up reel base 3T during reverse play, and 132c is a lock for the supply reel base 3S during loading or unloading operation. A lock lever control cam, 132d is a band brake control cam for applying a back tension to the supply reel base 3S during play operation, and 132e and 132f are main brake control cams for braking both reel bases during stop and eject.
32g is a gear switching cam for switching the reel base drive system between FF / REW and play, and 132h is an engaging portion for operating the cassette ejection mechanism.

Next, a reel base drive system will be described with reference to FIG. 2, for example. Gears 19 that rotate integrally with the capstan 4 are attached to the periphery of the capstan 4, and the gears 19 are rotatably attached to the chassis 1. Gear 20,
The rotation is transmitted to the gear 25 arranged between the reel stands 3S, 3T via 21, 22, 23, 24. An idler gear 26 is arranged around the gear 25 so as to be constantly meshed with the gear 25 and swing in accordance with the rotation direction of the gear 25. On both sides of the idler gear 26, FF / REW gears 27 and 28, which are constantly meshed with the reel bases 3S and 3T, are rotatably arranged, and play gears 29 and 30 are rotatably provided on the chassis. ~
A T-shaped lever 31 that is vertically movable in the drawing by a lever 32c and pins 31a to 31c, a lever 33,
They are attached via 34 respectively. When the lever 31 is in the lower position, the play gear 29,
When 30 serves as a rotation transmitting means between the reel stands 3S, 3T and the idler gear 26 and enters the play or reverse play state shown in FIGS. 3 and 4, when the lever 31 is moved to the upper position, the play gear 29, 30 escapes upwards, F
The F / REW gears 27 and 28 serve as rotation transmission means between the reel bases 3S and 3T and the idler gear 26, and the FF or REW state shown in FIG. 5 is established.

The lever 31 also has a shaft 36 on the chassis.
The long hole 3 is provided at one end of the lever 35 rotatably arranged by
1d and a pin 35a, the lever 35 is always urged clockwise by a spring 37, that is, in the direction of moving the lever 31 upward, and the other end is connected to the mode lever 1
3 Engagement pin 35b engageable with the cam recess 132g at the lower edge
Has been planted. Therefore, when the mode lever 13 is moved, the engagement pin 35b is moved to the cam concave portion 132g.
When the lever is released, the lever 35 is rotated counterclockwise, and the lever 31 can be pressed down to the play or reverse play state.
When the engagement pin 35b is engaged in the cam recess 132g, the lever 35b is rotated clockwise by the spring 37, and the lever 31 is moved upward to control the FF / REW state. it can.

Similarly, the pinch roller control system will be described with reference to FIG. 2. Reference numeral 38 denotes a pinch roller lever to which a pinch roller 39 is rotatably mounted. The pinch roller lever 38 is rotatably arranged by a shaft 40 and is coaxial with the shaft 40. Is connected to a lever 41 disposed at a position indicated by the arrow in FIG.

The pinch roller lever 38 is constantly urged clockwise, that is, in the direction toward the capstan 4 by a spring 43 hooked on a pin 41 a provided on the free end side of the lever 41. At the time of unloading, the distal end engaging portion 38a is separated from the capstan 4 by being pushed down by the movable guide member 9, and the movable guide member 9 is moved upward in the drawing by the loading operation, so that the spring 43 The capstan 4 is rotated by the elasticity.

The free end of the lever 41 has pins 41a,
A pin 46a at one end of a pinch roller pressing lever 46 rotatably attached by a shaft 45 via a connecting rod 44.
The other end of the lever 46 is provided with a pin 46b that can be engaged with the cam portion 132a on the upper edge of the mode lever. That is, the pinch roller lever 38 moves the pinch roller 39 to the capstan 4 by the loading operation, but stops at a position slightly separated from the capstan 4. Then, as shown in FIG. 3, the play state is set, and the lever 46 is rotated clockwise by the cam slope 132a of the mode lever 13, whereby the lever 41 is rotated clockwise through the connecting rod 44, and the pinch roller is rotated. 39 is pressed against the capstan 4. At this time, if the stroke is set so that the lever 46 is further rotated after the pinch roller 39 contacts the capstan 4, the pinch roller 39 is pressed against the capstan 4 by the elastic force of the winding spring 42. can do.

On the chassis 1 below the pinch roller lever 38, a lever 47 is disposed movably up and down by long holes 47a and 47b and pins 48a and 48b. The lever 41 has a long hole 47c formed at the upper end. Is linked to

As shown in FIG. 2B, a control lever 49 is mounted on the lever 47 so as to be rotatable by a shaft 50 and always urged clockwise by a spring 51. At its free end, the right end engaging portion 132h of the mode lever 13 and an eject lever 52 to be described later are provided.
An engaging portion 49a that can be engaged with the pin 52b is formed.

52 is an eject lever, which is shown in FIGS.
It is rotatably arranged by a shaft 53 as shown in (b),
An engaging portion 52a that engages with a lock release lever 54 of a cassette box (not shown) is formed at one end, and a reel brake release lever 56 described later is connected to the other end. Furthermore, in the middle protruding portion of the eject lever 52,
Engaging pin 52 that engages with the engaging portion 49a of the control lever 49
b is provided.

The lock release lever 54 of the cassette box (not shown) locks the cassette box at a lower position as shown in the figure and releases the lock of the cassette box at an upper position. It is biased downward. Therefore, when the eject lever 52 rotates clockwise, the lock release lever 54 is moved to an upper position with respect to the spring 55, and the cassette box can be unlocked.

In FIG. 2B, reference numeral 56 denotes a reel brake release lever, which is rotatably disposed by the shaft 14b.
The eject lever 5 has an elliptical long hole 56a at one end.
The other end is provided with a pin 56b at the other end which engages with a reel brake releasing piece C1 provided on the back surface of the cassette C. The pin 56b is rotated counterclockwise by a spring 58, that is, in the direction of releasing the reel brake. Being energized. Then, when the eject lever 52 is rotated counterclockwise, as shown in FIG. 1, the reel brake release lever 56 is rotated clockwise against the spring 58 to eject the reel in the cassette C. The brake can be applied from the inside. In addition, the long hole 56a is formed in a concave shape because the eject lever 52 starts rotating and immediately moves the engagement pin 56b away from the reel brake release piece C1, thereby accelerating the brake timing on the reel. At the same time, it has been considered that the pressing force of the engaging pin 56b does not load the cassette box (not shown) during the ejecting operation.

Next, various brake mechanisms for braking the reel bases 3S and 3T will be described.

In FIG. 2, 59 and 60 are shafts 14a and 1
4b is a main brake lever that is rotatably attached by 4b and brakes each reel base in the stop mode. The main brake levers 59 and 60 have brake pads 59a and 60a, which are in pressure contact with the outer periphery of the reel stand, at their one ends, and the other ends are connected to each other by a spring 61 so that the brake pads 59a and 60a are always opposed to each other. It is urged in the direction of pressure contact with the reel stand, that is, counterclockwise and clockwise.

On the other hand, the other end of each of the brake levers 59 and 60 has a cam recess 132 at the lower edge of the mode lever 13.
The engaging pins 59b and 60b that can be engaged with the e and 132f are planted. And the brake levers 59 and 60
The operation of the mode lever 13 causes the engagement pins 59b, 6
When 0b is engaged with the corresponding cam recesses 132e and 132f, respectively, the spring 61 turns to the corresponding reel bases 3S and 3T to be in a braking state.

Reference numeral 62 denotes a take-up reel base 3T which is rotatably mounted by a shaft 14b and is used for reverse play.
A pad 62a is provided at one end facing the take-up reel base 3S, and an engagement pin engageable with the cam recess 132b at the upper edge of the mode lever 13 at the other end facing the take-up reel base 3S. 62b are planted. This soft brake lever 62 has a spring 6
3, the pad 62a is urged counterclockwise to press the pad 62a against the reel base 3T. And mode lever 1
3, when the engagement pin 62b is engaged with the cam recess 132b, it is rotated by the spring 63 so as to be brought into contact with the take-up reel base 3T.

A reel lock lever 64 is rotatably attached by the shaft 14a and locks the supply reel stand 3S during loading and unloading operations. The reel lock lever 64 is provided with a locking claw 64a for locking the gear portion at one end facing the gear portion of the supply reel stand 3S, and at the other end engaged with a cam recess 132c at the upper edge of the mode lever 13. Possible engagement pins 64b are planted. The locking claws 64a are urged clockwise by a spring 65 so as to engage the reel claw 3S. Note that, when the mode lever 13 is moved, the engagement pin 64 b
When it is in a position where it can be engaged with c, the spring 65 rotates it to the reel stand 3S.

Reference numeral 66 denotes a band brake which is wound around the outer periphery of the supply reel base 3S and applies a back tension to the supply reel base 3S during a play operation. The other end of the piece 68 is attached to a tension regulator (not shown) rotatably arranged on the chassis 1. The rotating piece 68 is urged in a counterclockwise direction by a spring 71, that is, in a direction to pull the band brake 66 to tighten the reel base 3S, and the pin 73a at one end of a lever 73 rotatably disposed by a shaft 72 is provided. They are connected by a long hole 68a. The other end of the lever 73 is provided with an engaging pin 7 which can be engaged with the cam recess 132d at the upper edge of the mode lever 13.
The band brake 66 is controlled by turning the lever 73 and the turning piece 68 in response to the operation of the mode lever 13. That is, the operation of the mode lever 13 causes the engagement pin 73b to move the cam recess 13
2D, the rotation piece 68 and the lever 73 are allowed to rotate counterclockwise and clockwise, respectively, by the spring 71, and thereafter the band brake 66 is turned on the supply reel in accordance with the operation of the tension regulator. The back tension to the platform 3S can be controlled.

In the unloading state, the band brake 66 is relaxed irrespective of the rotating piece 68, and the brake is released. This operation is well known in the related art, and a description thereof will be omitted.

The magnetic recording / reproducing apparatus according to the present embodiment is configured as described above. To set each operation mode, the mode lever 13 is moved to each of the left and right operation positions via the lever 17 by the rotation of the cam disk 15. Done by doing
The pin 17 of the lever 17 in the cam groove 151 of the cam disk
It is determined by the engagement position of b. Each rotation position of the cam board 15 is detected by a switch pattern 152 and a switch member S shown in FIG.
The U controls each operation mode.

In the loading or unloading operation, the cam plate 15 is rotated, and the engaging pin 17b of the lever 17 is moved to the unloading position 151 in the cam groove 151.
c, and during the movement between the loading positions 151d. Before the loading operation, ie, in the unloading state, an instantaneous FF and an eject operation are performed. After the loading operation is completed, FF / REW, stop, play, reverse play, etc. The operation is performed.

First, the operation performed in the loading state will be described.

FIGS. 2A and 2B show the stop state.

In the stop state, the movable guide members 8, 9
Are in a loading state in which the tape is wound around the rotary head drum 7, and the mode lever 13 is moved to the stop / eject position 131c.

By the upward movement of the movable guide member 9, the pinch roller lever 38 is rotated to the vicinity of the capstan 4 by the elastic force of the spring 43, but the engagement pin 46b of the pinch roller pressure lever 46 is changed. By removing the cam slope 132a, the pinch roller 39 is located at a position rotated counterclockwise, so that the pinch roller 39 is not pressed against the capstan 4.
It is held in a slightly spaced position.

On the other hand, as shown in FIG. 2B, since the pinch roller lever 38 has moved upward,
The control lever 49 is moved upward through the engagement portion 49a.
Is upwardly separated from between the engaging portion 132h at the right end of the mode lever 13 and the engaging pin 52b of the eject lever 52. Therefore, no matter which direction the mode lever 13 moves, the operation is not transmitted to the eject lever 52, and the cassette ejection operation is not performed.

The lever 35 is rotated counterclockwise against the spring 37 when the engagement pin 35b is removed from the cam recess 132g of the mode lever 13, so that the lever 31 is pushed down. , Play Gear 29,3
0 serves as a rotation transmitting means between the reel bases 3 and 4 and the idler gear 26, and the reel drive system is in the play or reverse play state shown in FIGS.

The main brake levers 59 and 60 are respectively turned counterclockwise and clockwise by the elastic force of the spring 61 when the engaging pins 59b and 60b engage with the cam recesses 132e and 132f of the mode lever 13, respectively. And the reel bases 3 and 4 are braked.

The soft brake lever 62 and the reel lock lever 64 are rotated clockwise and counterclockwise when the engaging pins 62b and 64b are removed from the cam recesses 132b and 132c, respectively, and both are in the brake release state. ing.

FIG. 3 shows a play state. The movable guide members 8 and 9 rotate the cam disk 15 in the loading state in which the tape is wound around the rotary head drum 7 to rotate the mode lever 1.
By moving 3 to the play position 131d, a play state can be established.

The engagement pin 46b of the pinch roller pressing lever 46 is pushed up by the cam slant surface 132a to be rotated clockwise, and the lever 41 is rotated clockwise via the connecting rod 44. As a result, the pinch roller 39 is pressed against the capstan 4 and the tape runs.

Looking at the reel base drive system, the lever 3
The engaging pin 35b of No. 5 is in a state where the cam concave portion 132g is removed, and the lever 31 is moved to the lower position to move the play gear 2
Reference numerals 9 and 30 serve as rotation transmission means between the reel stands 3 and 4 and the idler gear 26.

The main brake levers 59 and 60 are moved by the springs 61 when the engaging pins 59b and 60b respectively come out of the cam recesses 132e and 132f of the mode lever 13.
To rotate clockwise and counterclockwise, respectively, so that the braking of the reel bases 3 and 4 is released.

As for the soft brake lever 62 and the reel lock lever 64, the engaging pins 62b and 64b are out of the cam recesses 132b and 132c, respectively, and both are in the released state as in the stop state in FIG.

On the other hand, the lever 73 has its engaging pin 73b
Is rotated clockwise by being engaged with the cam concave portion 132d, and the detouring piece 68 is rotated counterclockwise by the spring 71. As a result, the band brake 66 is tightened, and a predetermined back tension can be applied to the supply reel base 3 according to a tension regulator (not shown).

In the above-described play state, the cam plate 15 is rotated to move the mode lever 13 further to the right reverse play position 131e, thereby attaining the reverse play position shown in FIG.

The lever 35 for operating the reel drive system, the pinch roller pressing lever 46, the main brake lever 5
The operating positions of 9, 60 and the reel lock lever 64 are the same as in the play state of FIG.

On the other hand, the soft brake lever 62 is rotated counterclockwise by the engagement pin 62b coming out of the cam recess 132b, and the pad is pressed against the take-up reel table 4 by the spring 63, and the back tension is applied. Is provided.

The lever 73 has an engaging pin 73b.
Is rotated counterclockwise by removing the cam recess 132d, and forcibly rotates the rotating piece 68 clockwise,
The band brake 66 is released.

FIG. 5 shows the FF / REW state. In the loading state, rotate the cam plate 15 to set the mode lever 13 to F
When the F / REW moves to the pre-loading winding position 131b, the FF / REW state is set. In the apparatus of this embodiment, the FF and REW operations are performed while the tape is wound around the rotary head drum 7.

In the main brake levers 59, 60, the soft brake lever 62, and the reel lock lever 64, the engaging pins 59b, 60b, 62b, 64b have cam recesses 132e, 132f, 132b of the mode lever 13, respectively.
132c, the band brake 6
6 shows that the engaging pin 73b of the lever 73 is
Are in the brake released state.

On the other hand, the pinch roller crimping lever 46 is rotated counterclockwise when the engaging pin 46b is removed from the cam slope 132a, and the pinch roller 39 is released from the crimping state to the capstan 4 ( This position is the same as in FIG. 2 showing the stopped state).

Looking at the reel base drive system, the lever 35 is rotated clockwise by the elastic force of the spring 37 when the engagement pin 35b engages with the cam recess 132g, and pushes the lever 31 upward. . As a result, the play gears 29 and 30 are separated upward between the reel base and the idler gear 26, and the rotation transmission means between the reel bases 3 and 4 and the idler gear 26 become the FF / REW gears 27 and 28, and the FF and REW operations are performed. It will be possible.

The operations performed in the loading state have been described above, and each operation mode before the loading state will be described.

FIG. 1 shows a cassette ejection state, that is, an ejection state.

Mode lever 13 in the eject state
Is exactly the same as the stop position shown in FIGS. 2 (a) and 2 (b). Therefore, each drive system, brake mechanism, and the like are in the same state as the stop state.

However, in this embodiment, attention is paid to the fact that the loading state is performed in the stop state, and the ejecting operation is performed in the unloading state, and the stop and the ejecting are performed at the same operation position of the mode lever 13 due to the difference in the loading state. This enables different operations.

That is, by the unloading operation, the movable guide members 8 and 9 are separated from the rotary head drum 7 and move inside the tape (not shown) in the cassette C. At this time, the movable guide member 9 pushes down the pinch roller lever 38, rotates counterclockwise against the spring 43, and separates from the capstan. As a result, the lever 47 is slid downward, and the engagement portion 49a at the tip of the control lever 49 is moved to the engagement portion 13 at the right end of the mode lever 13.
2h and the engaging pin 52b of the eject lever 52, and the two can be engaged with each other.
3 can be transmitted to the eject lever 52.

Then, the engaging pin 17b of the lever 17 changes the engaging position from each engaging position in the cam groove 151 of the cam disk 15 to the eject position 151a, that is, the mode lever 13 moves from the left to the stop / eject position. 131
By moving to the position c, the engaging portion 132h of the mode lever 13 presses the engaging pin 52b of the eject lever 52 via the engaging portion 49a of the control lever 49, and rotates counterclockwise.

When the eject lever 52 is rotated counterclockwise, the lock release lever 54 is moved to the upper position against the spring 55, and the cassette box (not shown) is unlocked to remove the cassette. Can be discharged.

In this way, different operations of stop and eject can be performed at the same mode lever operating position by determining the state of the loading mechanism.

The play position 131d and the reverse play position 131e are also present to the right of the stop / eject position 131c of the mode lever 13. However, before the eject operation is performed, it is apparent from the cam groove 151 of the cam disk 15 As described above, the unloading position 151c, that is, the position 131 during loading when viewed with the mode lever 13
a, the mode lever 13 is always located to the left when the engaging portion 49a of the control lever 49 descends, and the mode lever 13 is always stopped / turned from the left during the ejecting operation. It moves to the ejection position 131c. That is, when the control lever 49 descends, no malfunction such as contact with the upper edge of the mode lever 13 occurs.

Further, simultaneously with the rotation of the eject lever 52, the reel brake release lever 56 is rotated clockwise to separate from the reel releasing piece C1 of the cassette C. As described above, the brake is immediately applied to the reel (not shown) of the cassette C to prevent the tape from sagging in the cassette.

Next, the winding state before loading will be described. As is apparent from FIG. 7, when the cam groove 151 of the cam disk 15 is seen, immediately before the loading operation starts from the eject position 151a, the pre-loading winding position 1
51b are present. Since the description of this mode itself is as described above, a detailed description is omitted, but after the cassette C is loaded and before the loading operation is started, the engaging pin 17b of the lever 17 is taken up before loading in the cam groove 151. The position becomes 151b. The fact that the mode lever 13 has reached the corresponding FF / REW, pre-loading take-up position 131b indicates that the switch pattern 1
52 and the switch block S, the tape end sensor 6 detects a leader tape on the take-up reel base 3T (the tape is not wound on the take-up reel base 3T and the tape cannot be pulled out). In the case, the control circuit CPU shown in FIG.
A command is issued further to instantaneously set the FF mode to take up the amount of tape pulled out during the loading operation on the take-up reel stand 3T.

Thus, when the loading operation is started, there is no tape on the take-up reel base 4 side, so that it is possible to prevent the tape drawing operation from being stopped.

As is apparent, the position of the mode lever 13 is exactly the same as in the FF / REW state shown in FIG. 5, and the reel drive system and each brake mechanism are in the same operating state.

FIG. 6 shows a state during the loading or unloading operation.

The engaging pin 17b of the lever 17 is used for the cam board 1
It is located between the unloading position 151c and the loading position 151d in the cam groove 151 of No. 5, and the mode lever 13 is at the leftmost loading position 131a.

The pinch roller pressure lever 46, the main brake levers 59 and 60, and the soft brake lever 62
Both are in the released state, and for the reel drive system, lever 3
5 is rotated counterclockwise by removing the engagement pin 35b from the cam concave portion 132g, and the lever 31 is moved to the lower position. The play gears 29 and 30 are connected to the reel bases 3 and 4 and the idler gear 26. It becomes the rotation transmission means between.

The reel lock lever 64 is rotated clockwise when the engagement pin 64b is engaged with the cam recess 132c, and the engagement claw 64a is engaged with the gear of the supply reel stand 3S. Then lock this. As a result, during the loading operation, the tape is always pulled out or taken up from only the take-up reel base 3T.

In this embodiment, the case where the present invention is applied to a rotary head type magnetic recording / reproducing apparatus has been described. However, the present invention is not limited to this. It goes without saying that the present invention can be applied to any device that pulls out a tape from a cassette and performs a loading operation.

[0084]

As described above, according to the recording or reproducing apparatus of the present invention, the operating range of the mode switching means can be reduced, and the size of the apparatus in the moving direction of the mode switching means can be reduced. In addition, the positional relationship in which each mechanism relating to the operation mode switching is arranged can be narrowed together with the operation range, which has a great effect on downsizing of the device.

Further, since the operation position of the operation mode switching means can be reduced, the operation mode switching means itself can be simplified.

With this arrangement, it is possible to fully utilize the characteristics of the device for mechanically interlocking switching control of a plurality of mechanisms without individually using a motor, a plunger or the like for drive control of each mechanism.

[Brief description of drawings]

FIG. 1 is a diagram for explaining an embodiment of a recording or reproducing apparatus of the present invention, and is a plan view showing a cassette eject (eject) state.

FIG. 2A and FIG. 2B are plan views showing a stopped state.

FIG. 3 is a plan view showing a play state.

FIG. 4 is a plan view showing a reverse play state.

FIG. 5 is a plan view showing an FF / REW, winding state before loading.

FIG. 6 is a plan view showing a state during a loading or unloading operation.

FIG. 7 is a diagram showing a relationship between a cam board and a mode lever.

FIG. 8 is a view for explaining a rotational position detecting means of the cam disk.

[Explanation of symbols]

 2 cassette mounting section 3S, 3T reel stand 4 capstan 6 tape end sensor 7 rotary head drum 8, 9 movable guide member 13 mode lever 15 cam board 17 lever 26 idler gear 27, 28 FF / REW gear 29, 30 play gear 38 Pinch roller lever 46 Pinch roller pressure lever 49 Control lever 52 Eject lever 54 Lock release lever 56 Reel brake release lever 59, 60 Main brake lever 62 Soft brake lever 64 Reel lock lever 66 Band brake 132a to 132g Cam part 132h Engagement part 151 Cam groove 152 Switch pattern S switch block

Claims (1)

(57) [Claims] 1. A loading unit for pulling out a tape from a cassette loaded in a cassette mounting unit and mounting it on a head, a mode switching unit for moving the position according to a plurality of operation modes, and the cassette mounting unit. a cassette discharge means for discharging ready from the cassette <br/> preparative mounted unit loaded cassette when said loading means is in the unloading state, the operation mode of stopping the running of the tape Against
A control means for making the cassette ejecting means operable by moving the mode switching means to a corresponding stop position.
The provided, upon movement to the stop position of the mode switching means, depending on the loading state of the tape, said tape
Stop operation of the cassette and operating the cassette ejecting means
Recording or reproducing apparatus and in that was configured so as to select that.