JPH0619886B2 - Magnetic recording / reproducing device - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a cassette type magnetic recording / reproducing apparatus which can be applied to either a small cassette or a standard cassette.

[Conventional technology]

FIG. 14 shows an example of a conventional magnetic recording / reproducing apparatus for recording / reproducing a standard cassette. In the figure, (1) is VHS
Standard cassette, (2) take-up reel, (3) supply reel, (4), (5) guide pin, (6), (7), (8) notch, (9) A tape, (10) is a magnetic recording / reproducing device (hereinafter referred to as VTR) for recording or reproducing the standard cassette (1), and (11) is a head for recording or reproducing audio and control signals (hereinafter referred to as AC head). ,
(12) is a full-width erasing head, (13) is a pinch roller,
(14) is Capstan, (15), (16), (1
7) is a tape guide, (18) and (19) are respectively a take-up reel stand and a supply reel stand, and (20) is a rotary drum having a video head for recording or reproducing a video signal.

Next, FIG. 15 is a diagram showing a small cassette smaller than the standard cassette (1). (101) is a schematic view of a compact cassette according to the VHS standard, (102) is a take-up reel, (103) is a supply reel, (104), (10
5) is a guide pin, (106), (107), (10
8) is a notch, and (109) is a tape.

Also, the alternate long and short dash line is a virtual diagram of the standard cassette (1) drawn to show the approximate relative size relationship between the small cassette (101) and the standard cassette (1).

Further, FIG. 16 is a view showing a cassette adapter required for recording / reproducing a small cassette (101) with a standard cassette VTR. (201) is a cassette adapter, (202) is a movable lever, (203) is a tape guide embedded in the movable lever (202), (204)
Is a movable lever, (205) is a tape guide embedded in the movable lever (204), and (210) is an opening / closing lid of the cassette adapter (201). Cassette adapter (2
01) is the standard cassette shown in Figs. 14 and 15
The appearance is almost the same as (1).

The small cassette (101) has an opening / closing lid (110) and a gear (111).

Next, the case where the standard cassette (1) is loaded into the VTR (10) and recording or reproducing is performed will be described. First, the standard cassette
(1) is inserted into a cassette holder (not shown) provided on the VTR (10), and the cassette holder is moved manually or automatically to load it at the position shown in FIG. 14 (a). At this time, the reel stands (18) and (19) are fitted to the VTR (10) and the hubs of the take-up reel (2) and the supply reel (3) in the cassette, respectively. Also a standard cassette
A capstan (14) is provided in the notch (6) of (1).
The tape guide (15) is inserted into (7), and the tape guides (16) and (17) are inserted into the notch (8). When recording or reproducing on the standard cassette (1) arranged in this way, as shown in FIG. 14 (b), the tape (9) in the standard cassette (1) is attached to the tape guides (15), (16). , (1
7) is moved and pulled out as shown by the arrow indicated by the alternate long and short dash line in FIG. 14 (b). As a result, tape (9) is
As shown in Figure (b), the AC head (11) and full width erase head (1)
2) and the rotating drum (20). In this state, the pinch roller (13) is moved to hold the tape (9) together with the capstan (14) as shown in FIG. 14 (b), and the capstan (14) and the take-up reel (2) are driven to rotate. The tape (9) runs along the running path shown in FIG. 14 (b). When recording, write the full-width erase head (1
A desired signal current is supplied to each of the video head and the AC head (11) of the rotary drum (20) while supplying the erasing current to 2). When reproducing, the signal recorded on the tape (9) is read by the video head and the AC head (11) of the rotary drum (20).

Next, when recording or reproducing the small cassette (101), this small cassette (101) is directly used for the VTR.
It cannot be applied to (10). That is, the small cassette (101) and the standard cassette (1) have different sizes as shown in FIG. 15, the take-up reel stand (18) does not fit, and the tape guides (15), (16), ( 17)
And the capstan (14) has notches (106), (1
Various inconveniences such as not entering 07) and (108) occur. In order to solve this, a cassette adapter (201) is conventionally used as shown in FIG. That is, as shown by the arrow in FIG. 16, a small cassette (10
Insert 1) into the cassette adapter (201). At this time, the cutout portion of the small cassette (101) (see FIG. 15)
The tape guides (203) and (205) enter into (106) and (108), respectively. Then, the opening / closing lid (110) of the small cassette (101) is opened (the mechanism is not shown), and the movable levers (202) and (204) are rotated (the rotating mechanism is not shown). The tape (109) in the small cassette (101) is pulled out into the cassette adapter (201) by the tape guides (203) and (205), and the tape guide of the pulled out tape (109) is shown. (20
The portion from 3) to (205) is made to be substantially equal to the tape path in the standard cassette (1). That is, the 16th
The tape guide (203) shown in the figure is located at a position corresponding to the guide pin (4) in the standard cassette (1) (see FIG. 15).
Further, the tape guide (205) moves to a position (see FIG. 15) corresponding to the guide pin (5). The cassette adapter (201) to which the small cassette (101) has been set as described above is attached to the conventional VTR (10) with the opening / closing lid (210) opened, and the small cassette (1) is attached.
01) VTR (10) on the hub of the supply reel (103)
The supply reel stand (19) is fitted to the
As shown in FIG. 7, the take-up reel (102) in the small cassette (101) is engaged with a gear (211) provided in the cassette adapter (201), and the gear (2
11) VTR on the hub of the take-up gear (212) engaged with
The take-up reel number (18) of (10) is fitted. In this way, the tape (109) in the small cassette (101) can also take the tape running path for recording or reproducing in the same manner as described with reference to FIG. 14, so that the conventional VTR (10) can be used. Is applicable.

[Problems to be solved by the invention]

Since the conventional VTR is configured as described above, in order to record and reproduce the small cassette (101) with the standard type VTR, the cassette adapter (201) is required because it cannot be directly attached to the VTR, and it is small. There was a problem that the cassette (101) had to be attached to and detached from the cassette adapter (201) one by one.

The present invention has been made in order to solve the above problems, and an object thereof is to obtain a VTR to which both a standard cassette and a small cassette can be mounted. Another object of the present invention is to obtain a VTR which can avoid an increase in thickness as much as possible by accommodating a mechanism portion related to mounting a small cassette in a lower portion of the cassette holder as compared with a conventional VTR.

[Means for solving problems]

The VTR according to the present invention has a cassette holder capable of mounting either a standard cassette or a small cassette, and when the standard cassette is mounted, the cassette operating mechanism related to the small cassette does not hinder the standard cassette mounting operation. On the other hand, when a small cassette is installed, part of the tape is pulled out by the movable guide provided at the bottom of the cassette holder, and the tape of this extracted part is at the same position as the tape path when the standard cassette is installed. In addition, the standard cassette supply reel base is directly engaged with the small cassette supply reel, while the standard cassette take-up reel base is connected to the small cassette take-up reel via the rotating member provided at the bottom of the cassette holder. To be engaged with.

[Action]

In the present invention, a movable guide for pulling out a tape from a small cassette, a take-up reel for the small cassette, and a VT.
R Rotating member that engages the take-up reel stand of the main body and gears related to it, etc. are driven according to the movement of the cassette holder, and the force generated by inserting the standard cassette when the standard cassette is installed. The movable guides, gears, and the like operate so as to escape.

Example of Invention

An embodiment of the present invention will be described below with reference to FIGS. 1 to 13. FIG. 1 is an external front view of a magnetic recording / reproducing apparatus,
FIG. 2 is a view showing the structure of the cassette mounting portion of FIG. 1, and FIG.
The figure shows the structure of the sub-board part, Fig. 4 is the top view of Fig. 3, Fig. 5 is the view showing how the cassette holder and sub-board are connected, and Fig. 6 is for moving the guide plate up and down. FIG. 7 is a view showing the opening / closing mechanism of the opening / closing lid of the small cut, FIG. 8 is a view showing the driving mechanism of the cam, and FIG. 9 is a view showing the relationship between the cassette holder and the tape guide. FIG. 10 is a view showing a state in which the take-up reel base and the take-up reel are engaged with each other via a gear, and FIG. 11 is a view showing a structure of a take-up gear portion,
FIG. 12 is a view showing the structure of the lock releasing pin portion, and FIG.
The figure is a diagram showing the structure of the door portion and the guide portion, and the same or corresponding parts as those of the above-described conventional device are designated by the same reference numerals and the description thereof will be omitted. In the figure, (21) is a cassette insertion opening (see FIG. 1) when the standard cassette (1) or the small cassette (101) according to the VHS standard is loaded in the magnetic recording / reproducing device (10), and (22) is a cassette insertion port. The first door provided at the mouth (21), (23) is also the second door, (24)
Is a front panel, (25) is a cassette holder (2nd) into which a standard cassette (1) or a small cassette (101) is inserted.
(Refer to the drawing), (26) is a link arranged on the outer wall of the cassette holder (25), and is adapted to move upward only when the standard cassette (1) is inserted into the cassette holder (25), (27) And (28) are links (26)
A guide plate (2) for connecting the small cassette (101) to the cassette holder (25) so that the small cassette (101) is guided to the correct position when the small cassette (101) is inserted into the cassette holder (25).
9) and (30) are grooves provided in the upper plate of the cassette holder (25) for inserting the guide plates (27) and (28), and (31), (32) and (33) are cassette holders ( 25) A guide pin (331), (332) and (333), which is installed on one side surface of the cassette holder and is provided for moving the cassette holder (25), has a similar guide pin (see FIG. 9), (34) and (35)
Is a recess provided on the side surface of the cassette holder (25) and into which a tape guide described later is inserted, (3
6) is a link for moving the link (26) in the vertical direction, and (37) and (38) are cassette holders (2).
5) Support plates arranged on the left and right of the cassette holder for supporting the cassette holder (25), (39), (40) and (4)
1) is a guide groove into which guide pins (31), (32) and (33) are inserted and guides the movement of the cassette holder (25), and (439), (440) and (441) are also the same. The guide groove (42) is a support shaft (44) which is planted on one side surface of the cassette holder (25).
2) also has a similar support shaft, (43) and (44) are rack plates provided along the support plates (37) and (38), and (45) and (46) are rack plates (43) and (46). Racks provided at (44), (47) and (4)
8) is a cassette loading gear for moving the standard cassette (1) or the small cassette (101) inserted in the cassette holder (25) together with the cassette holder (25),
(49) and (50) are drive arms integrated with the cassette loading gears (47) and (48),
(51) and (52) are cams for moving a later-described sub-board up and down with respect to the cassette holder (25),
(53) and (54) are cams (51) and (52)
And (55) is a support shaft of the gear (53), and (56) is a magnetic recording / reproducing device mounted on the bottom surface of the cassette holder (25) and mounted on the cassette magnetic recording / reproducing device (10). A hole (57) for receiving the take-up reel base (18) in the main body of the apparatus is the same as the supply reel base (1).
A hole (58) for the insertion of 9) is provided on the side wall of the cassette holder (25) and the support shaft (5) of the gear (53) is provided.
A hole (59) for supporting 5) is provided in the lower part of the cassette holder (25) and the cassette holder (25).
Insert the small cassette (101) into the tape (10
9) a sub-board on which a mechanism portion for pulling out or winding up is arranged, (60) and (61) are holes similar to those described for the holes (56) and (57), and the sub-board (5)
9) and holes into which the take-up reel stand (18) and the supply reel stand (19) enter (FIGS. 3 and 4).
(Refer to the drawing), (62) is a rotating lever, (63) is a tape guide for pulling out the tape (109) of the small cassette (101) installed on the rotating lever (62), (64)
Is a rotation lever, (65) is a tape guide that is installed in the rotation lever (64) and also pulls out the tape (109), and (66) to (70) rotate the rotation lever (62). A group of gears for making each gear a sub-board (59).
It is rotatably supported on the upper side and is held by its neighbors engaged with each other. (71) is a gear that is rotatably supported on the sub-board (59) and is engaged with and held by the gear (70), and (72) is engaged with the gear (71). , Movable gear, made possible to be done,
(73) is a pulley integrated with the movable gear (72),
(74) and (75) are pulleys integrally connected to each other,
(76) and (77) are belts, (78) is a movable gear, (94) is a pulley (see FIG. 4) integrated with the movable gear (78), and (79) is a movable gear (78). A gear which is driven when fitted together and is rotatably supported on the sub-board (59), (80) is a gear integrated with the gear (79), (81) is engaged with the gear (80) and An axially movable gear, (82) is a gear that is integrated with the gear (81) and is for driving the take-up reel (102) of the small cassette (101), and (83) is an integrated gear ( 8
A spring plate for moving 1) and (82) in the axial direction,
(84) is an integrated gear (72) and pulley (73)
And a support shaft (88) that supports the integrated pulley (94) and gear (78) and is planted on the sub-board (59).
A turning lever (85) for turning around the sub board (59) for turning the turning lever (64).
A gear pivotally supported above, (86) a cam provided at one end of the rotating lever (62) for rotating the rotating lever (84), and (87) a winding of the small cassette (101). Pin for unlocking the reel (102), (8
8) is a support shaft pivotally mounted on a sub-board (59) for pivotally supporting the rotary lever (84) and at the same time pivotally supporting the integrated pulleys (74) and (75), and (89) is a rotation shaft. Springs for biasing the moving lever (84), (90) to (93) are guide holes through which guide pins (see FIG. 5) described later penetrate, and (301) is a cassette holder (25). Guide pins (see FIG. 5) set up on the lower surface of the spring, (302) are springs that push the sub-board (59) away from the cassette holder (25), and (30).
8) is a spring (see FIG. 6) spanning the side surfaces of the link (36) and the cassette holder (25), and (309) is also a spring spanning the other side surface of the cassette holder (25). (310) and (311) are arranged on one side surface and the other side surface of the cassette holder (25), respectively, and each of the support shafts (312) and (3).
Rotation levers (314) and (315) rotatably supported on both side surfaces of the cassette holder (25) at (13) rotatably support the link (36) and the link (336), respectively. And cassette holder (25)
The support shafts (316) and (317) respectively provided on one side surface and the other side surface of the guide plate (2).
7) and (28), which are rotatably attached to support shafts (318) and (319), respectively,
(320) is a rotation lever (316) and a guide plate (27)
And a leaf spring (see FIG. 7) spanned between and (32
1) and (322) (see FIG. 8) are gears (see FIG. 8), (323) and (32) which are integrally connected.
4) is a rotation lever (3) that rotates around the support shaft (327).
25) Gears rotatably attached to both ends of (25), (32
6) is a spring for pulling the rotation lever (325), (3
37 is a toothed belt (see FIG. 8) stretched over the gears (322), (323), (53) and (324), and (328) is the small cassette (101) of the cassette holder (25). A stopper (see Fig. 9) to prevent entry into the back of the specified position (see Fig. 9), (32
9) and (330) are stoppers for preventing the standard cassette (1) from entering further than the predetermined position of the cassette holder (25), and (334) is a pin (87).
Is a hole provided so as to project from the housing bottom surface of the cassette holder (25), and (335) is provided so that the gear (82) and the spring plate (83) are projected from the housing bottom surface of the cassette holder (25). The holes (340) are springs (see FIG. 11) for pushing the gears (81) and (82) from the sub-board (59) to the housing side of the cassette holder (25), and (341) is the take-up reel stand ( Gears (see FIG. 10) and (342) provided on the flange portion of 18) pivotally support the gears (81) and (82) and are set up on the sub-board (59) (see FIG. 10). ) And (345) are springs (see FIG. 12), (350) and (35) for pushing the pin (87) from the sub-board (59) to the housing side of the cassette holder (25).
1) is a rotary lever (see FIG. 13) provided on the left and right of the cassette insertion opening (21), and (352) is the first door (2).
Lock to prevent 2) from opening, (35
3) and (354) are guides that serve as a guide when the small cassette (101) is inserted into the housing of the cassette holder (25), and (355) is the first and second doors (2).
2) and (23) support shafts, and (356) a rotating lever (35
This is a spring for imparting a bias to (0).

Next, the operation will be described. First, the case of loading the standard cassette (1) will be described. Standard cassette (1) first
When inserting from the insertion opening (21) of the magnetic recording / reproducing apparatus (10) shown in the figure, first, the lower parts of the front end portions of the standard cassette (1) are moved to the movable levers (350) and (35) shown in FIG.
The movable levers (350) and (351) are rotated when the standard cassette (1) is further inserted by contacting with 1), and the lock of the first door (22) of the cassette insertion port (21) is released. It will be canceled. This will be described in detail with reference to FIG. 13. By the inserting force of the standard cassette (1), the rotating levers (350) and (351) resist the pulling force of the spring (356) and rotate around the shaft as shown by the arrow. The lock levers (352) and (353), (3
4) also rotates. The lock lever (352) releases the lock with respect to the first door (22) provided in the cassette insertion opening (21). In addition, here, the second door (23)
No lock mechanism is provided for. When the standard cassette (1) is further inserted from this state, both doors (22) and (23) are pushed open by the front axis of the standard cassette (1) with the support shaft (355) as the central axis. When the standard cassette (1) is further inserted, the standard cassette (1) is inserted into the cassette holder (25). At this time, since the guides (353) and (354) are also rotated as described above, they do not hinder the insertion of the standard cassette (1).

Next, this standard cassette (1) is brought into contact with the rotating levers (310) and (311) shown in FIG. 2 to rotate them, and the guides (27) and (28) are moved through the link mechanism as shown in FIG. Push it up above the cassette holder (25) shown in. This does not hinder the insertion of the standard cassette (1). This mechanism will be described in detail with reference to FIG. 6. The rotation levers (310) and (311) are rotated around the support shafts (312) and (313) in the arrow direction by inserting the standard cassette (1), Rotate (36) and (336) about the pivots (314) and (315) against the springs (308) and (309). These links (3
6) and (336) push the link (26) upward as shown by the arrow in FIG. 6, so that the guide plates (27) and (2)
8) is pushed up. In this way, the guide plates (27) and (28) move to a position where they do not interfere with the insertion of the standard cassette (1).

Then, the spring plate (83) shown in FIG. 9 is pushed down by the standard cassette (1) below the housing of the cassette holder (25), and if the gear (82) projects from the hole (335), this spring It is pushed down by the plate (83) and does not interfere with the insertion of the standard cassette (1). This situation will be described with reference to the sectional view shown in FIG. 11. When the standard cassette (1) enters, the spring plate (83) moves to the eleventh position.
When pushed downward from the position shown by the solid line in the figure as shown by the arrow, the gear (82) protruding upward from the hole (335) of the cassette holder (25) moves along the pin (342) as shown in FIG. It is pushed down against the spring (340). Thus, the spring plate (83) and the gear (8
2) allows the standard cassette (1) to enter by moving downward to the position indicated by the broken line in FIG. 11. Where the gear (82)
Is integrated with the gear (81) and is arranged on the sub-board (59) as shown in FIGS. 3, 4, and 11, and is rotatably moved up and down by the pin (342). It is held freely. The gears (82) and (81) are pushed up by the spring (340), and in this state, the tip of the spring plate (83) is inserted in the recess provided in the intermediate portion between the gears (82) and (81). In spite of the fact that the spring plate (83) is arranged so as not to come into contact with the recess, the tip of the spring plate (83) has the gears (82) and (81).
Does not become a load when rotating.

Further, when the standard cassette (1) is inserted, the front end of the standard cassette (1) abuts against the stoppers (329) and (330) provided on the cassette holder (25) as shown in FIG. Insertion is blocked.

In this way the standard cassette (1)
9) and (330), the cassette loading gears (47) and (48) shown in FIG. 2 are rotationally driven by the drive gear (not shown), and the drive arm (49).
And (50) respectively guide the guide pins (33) and (333) into L-shaped guide grooves (41) and (44).
1) along with the guide pin (31),
(32), (331) and (332) are also guide grooves (39), (40), (439) and (440), respectively.
14 along with the cassette holder (1) until the standard cassette (1) is in the regular loading position as shown in FIG. 14 (a).
5) Move. During the movement of the cassette holder (25) in the insertion direction of the cassette, the sub-board (59) is moved along with the movement of the cassette holder (25).
The upper gears (66) and (85) are rotationally driven by the racks (45) and (46), and the tape guides (63) and (65) shown in FIG. 3 or 4 are moved (these moving mechanisms). Will be described later in the description of loading a small cassette), and the rack plates (43) and (44).
Is moved in a direction (arrow A in FIG. 2) opposite to the movement of the cassette holder (25) in the cassette insertion direction by a drive mechanism (not shown), so that the tape guides (63) and (6
5) moves further than the above, and reaches the position of the broken line shown in FIG. Thus, as shown in FIG. 9, the standard cassette (1) is released into the recesses (32) and (35) on both sides of the cassette holder (25) so as not to interfere with the mounting of the standard cassette (1). Further, the sub-board (59) itself is also driven by a cam described later so as to approach the lower surface of the cassette holder (25), and when the cassette holder (25) reaches the above-mentioned regular loading position, on the magnetic recording / reproducing apparatus main body. It is designed so that it does not come into contact with various parts near the reel stand (thus making the device thinner). In such a state, the winding and supply reel bases (18) and (19) of the magnetic recording / reproducing apparatus main body have holes (60) and (61) of the sub-board (59) and holes (60) of the cassette holder (25) ( 56) and (57) and fit into the hubs of the winding and supply reels (2), (3) in the standard cassette (1). The opening / closing lid of the standard cassette (1) is opened during the loading of the cassette, but the opening / closing mechanism is omitted here.

When the standard cassette (1) is loaded in the regular position as described above, the subsequent loading and recording / reproducing operations of the tape (9) are the same as those described in the conventional example, and therefore the description thereof is omitted.

Next, when the standard cassette (1) is taken out, the tape (9) is unloaded and wound into the standard cassette (1), and then the cassette loading gears (47) and (48) shown in FIG. The guide pins (33) and (333) are moved in the direction opposite to that of the cassette device, and moved along the L-shaped guide grooves (41) and (441). At this time, the opening / closing lid of the standard cassette (1) is closed again by the opening / closing mechanism (not shown). In this way, the cassette holder (25) is returned to the original position apart from the regular loading position described above. At this time, the cassette insertion slot (2
The doors (22) and (23) of 1) are designed to be opened by a lever mechanism (not shown) which operates in response to the rotation of the cassette loading gears (47) and (48). In this state, the standard cassette (1) can be taken out from the cassette holder (25), and when the standard cassette (1) is removed from the cassette insertion port (21) shown in Fig. 1, the doors (22) and (23) will be opened. It closes again and the pivoting levers (350) and (351) also return to their original position, and the locking lever (352) locks the door (22). At this time, the cassette holder (2
5) When the standard cassette (1) such as the rotating levers (310) and (311) provided in 5) and the links related to them, the spring plate (83), etc. is inserted, the displacement is caused by the standard cassette (1). Each member returns to its original position.

In addition, the sub-board (59), tape guides (63), (6
5) and the like also return to their original positions through the reverse operation process described above.

Next, the case of loading the small cassette (101) will be described. When the small cassette (101) is inserted through the insertion opening (21) of the magnetic recording / reproducing apparatus (10) shown in FIG. 1, a second cassette corresponding to the insertion portion of the small cassette (101) is formed.
The door (23) is free of lock and the first door (22)
Since the lock is locked, the small cassette (101) can be inserted into the second door (23). When the small cassette (101) is inserted from this portion, the second door (23) is opened by the front part of the small cassette (101),
The small cassette (101) is shown in FIG. Guide (3
53) and (354) enter the cassette holder (25) while the side surfaces of the cassette are regulated. Inside the cassette holder (25), the guide plates (27) and (28) shown in FIG. 2 or FIG. Guide plate (2
Small cassette (101) along with 7) and (28)
During the process of inserting, the opening / closing lid (110) of the small cassette (101) is rotated by levers (316) and (317).
Is opened by the action of. This will be described in detail with reference to FIG. 7. When the small cassette (101) is inserted as shown in FIG. 7, the opening / closing lid (110) of the small cassette (101) is pushed downward by the leaf spring (320). The rotating lever (316) is started to come into contact with the rotating lever (316), and a protrusion provided on the rotating lever (316) causes an opening / closing lid (11) as shown in FIG.
0) is opened by receiving the turning force indicated by the arrow (P) around its support shaft. The other rotating lever (317) has the same function.

When the small cassette (101) is further inserted, the small cassette (10) is inserted by the stopper (328) shown in FIG.
The entry of 1) is blocked.

Thus, when the small cassette (101) is inserted to the position of the stopper (328), the sub-board (59) shown in FIGS. 2 to 4 is moved upward so as to approach the lower surface of the cassette holder (25). Will be moved to. This will be described with reference to FIGS. 2, 3, and 5. The sub-board (59) is arranged below the cassette holder (25) as shown in FIG. 2, and the sub-board (59) is provided with through holes (90) to (93) as shown in FIG. The pins (301) set up on the lower surface of the cassette holder (25) are inserted into these holes (90) to (93) to hold the sub-board (59). A spring (302) is wound around these pins (301) and presses the sub-board (59) downwardly below the lower surface of the cassette holder (25). For example, as shown in FIG. 5, a sub-board (59)
The pin (301) is inserted into the hole (90) of the sub-board (59) and the sub-board (59) is pushed downward by the spring (302). A similar structure is adopted for the remaining holes (91) to (93). In this state, the cassette holder (2
When the moving gears (53) and (54) of the sub-board (59) supported by the holes (58) and the like of 5) are rotationally driven, the cam (5) directly connected to these gears (53) and (54).
1) and (52) push up the sub-board (59) against the spring (302) while contacting the end surface of the sub-board (59). At this time, the teeth of the gears (66) and (85) are respectively the racks (45) and (46) shown in FIG.
Move upwards along. The moving gears (53) and (54) of the sub-board (59) are, for example, as shown in FIG. 8, drive gears (321) and (322) connected to the gear (53) via a toothed belt (337). ) Is rotated by a gear (not shown). As described above, the cassette holder (25) moves in an L-shape as can be seen from the fact that the guide pin (33) moves along the L-shaped guide groove (41), for example. Therefore, the distance between the support shaft (55) and the support shafts of the gears (321) and (322) changes. Therefore, in order to prevent the toothed belt (337) from loosening, as shown in FIG.
37) Gears (323) and (3) that move according to the looseness of
24) is provided to absorb looseness. That is, the gear (32
3) and (324) are provided at both ends of the rotating lever (325), and the rotating lever (325) is constantly rotated by a spring (326) around the support shaft (327) to always have a toothed belt. Tension is given to (337) to prevent loosening.

Now, when the sub-board (59) is pushed up in this manner, the tape guides (63) and (65) shown in FIG. 3 or FIG.
Into the notches (106) and (108) of 1),
This is shown in FIG. That is, the cassette holder (2
The small cassette (101) inserted in 5) as described above is located at the position of the phantom diagram indicated by the alternate long and short dash line, and
When 9) is pushed up as described above, the rotation lever (62)
And a tape guide (6
3) and (65) enter the notches (106) and (108) as shown.

In this state, the cassette loading gears (47) and (48) shown in FIG. 2 are driven to move the cassette holder (25) in the same manner as described in the case of inserting the standard cassette (1). Here, when the cassette holder (25) is moving in the cassette insertion direction, the gears (66) and (85) respectively move the racks (45) and (46) on the rack plates (43) and (44). By the action of the. The rotation of the gear (66) is sequentially transmitted to the gears (67) to (70) to rotate the rotating lever (62) clockwise in FIG. 3 or FIG.
Further, the rotation lever (64) is rotated counterclockwise by the rotation of the gear (85). When the cassette holder (25) reaches the final point of movement in the cassette insertion direction, the rotary levers (62) and (64) are moved to the positions shown by the phantom line in FIG. There is. The movement of the rotating levers (62) and (64) causes the tape (1) in the small cassette (101) to be moved as shown in FIG.
09) (two-dot chain line) are tape guides (63) and (6
It is pulled out to the position shown by the one-dot chain line by 5). From the final point, the cassette holder (25) is further attached to the sub-board (5
9) (the teeth of gears (66) and (85) also move downwards along the racks (45) and (46), respectively)
Move down and to the normal loading position as described for the standard cassette (1). In this state, the tape (109) pulled out from the small cassette (101) is at the same position as when the standard cassette (1) is loaded, that is, as shown in a phantom diagram by a broken line as shown in FIG. It is equivalent to loading the standard cassette (1) into the. As described above, when pulling out the tape (109) from the small cassette (101), the small cassette (10
Since it is necessary to release the brake (not shown) provided on the flange of the take-up reel (102) in 1), the following is done. Pins (87) are provided on the sub-board (59) as shown in FIG. 3 or FIG.
When the tool approaches the cassette holder (25), this pin (8
7) is a hole (334) provided in the cassette holder (25)
It penetrates through (see FIG. 9) and enters into a brake release hole (not shown) provided on the lower surface of the small cassette (101). The pin (87) thus inserted releases the brake on the flange of the take-up reel (102). As shown in FIG. 12, this pin (87) is movably inserted into the hole of the sub-board (59) and pushed upward by the spring (345). FIG. 12 shows the sub-board (5
9) shows the case where the cassette holder (25) is approached, and when not approached, the pin (87) does not protrude from the hole (334) of the cassette holder (25). The reason the spring (345) is provided is that the standard cassette (1)
When the sub-board (59) is loaded, the cassette holder (2)
This is to allow the pin (87) to come into contact with the lower surface of the standard cassette (1) when it comes close to (5) (there is no hole in this part of the standard cassette (1)). Incidentally, the recessed portion at the lower part of the pin (87) is for fitting a positioning pin (not shown) provided in the magnetic recording / reproducing apparatus main body when the cassette holder (25) reaches the regular loading position. .

When the small cassette (101) is loaded in the regular loading position in this manner, the supply reel stand (19) of the magnetic recording / reproducing apparatus main body is provided with holes (61) in the sub-board (59) and holes in the cut holder (25). It penetrates through (57) and fits into the hub of the supply reel (103) in the small cassette (101). On the other hand, the take-up reel stand (1
8) also penetrates the hole (60) of the sub-board (59) and the hole (56) of the cassette holder (25) and projects into the cassette holder (25), but there is a small cassette (101) in this portion. Not so small cassette (101)
The connection with the take-up reel (102) is performed as follows. That is, the sub-board (59) is the cassette holder (25).
When approaching the lower surface of the sub-board (59), the gear (82) pushed upward on the sub-board (59) moves the cassette holder (2).
5) A cassette holder (25) which penetrates the hole (335) of
Projecting inward, the gear (82) is coupled to the gear (111) provided on the flange of the take-up reel (102) of the small cassette (101) as shown in FIG. Gear (82)
The gear (81) directly coupled to the magnetic recording / reproducing apparatus body is coupled to the gear (341) directly coupled to the take-up reel stand (18).

In this way, the take-up reel base (18) and the take-up reel (102) are engaged with each other.

In such a state, the rotating lever (84) shown in FIG. 3 or FIG. 4 moves the spring (8) around the support shaft (88).
It is in a position rotated counterclockwise against 9). That is, when the rotation lever (62) is rotated toward the position indicated by the alternate long and short dash line or the broken line shown in FIG.
Just before 2) comes to the position indicated by the alternate long and short dash line, the turning lever (62)
The cam (86) provided at the end of the rotary lever (84) comes into contact with one end of the rotary lever (84) to rotate the rotary lever (84). Therefore, the gears (72) and (78) held by the rotary lever (84) also move and separate from the gears (71) and (79), respectively.
By doing this, the take-up reel stand (18) of the magnetic recording / reproducing apparatus main body is driven in the same manner as in the case of loading the standard cassette (1), whereby the gears (81), (82)
Via the take-up reel (10) of the small cassette (101)
2) can be driven. Note that the gears (79) and (80) are always driven, but this is not a problem because it is a small load. Of course gear (7
It goes without saying that 9) and (80) may be moved together with the turning lever (84).

When the small cassette (101) is loaded as described above, it becomes as if the standard cassette (1) was loaded. Therefore, loading, recording and reproducing can be performed in the same manner as in the case of the standard cassette (1). it can.

Next, a case where the small cassette (101) is taken out will be described. First, the tape (109) is unloaded in the same manner as in the case of the standard cassette (1).
Drive the take-up reel stand (18) or supply reel stand (19) (or both) of the magnetic recording / reproducing apparatus main body until 9) comes to the position shown by the alternate long and short dash line in FIG.
01) Get inside. Then, the cassette loading gears (47) and (48) are rotated in the opposite direction to that when the cassette is loaded, and the guide pins (33) and (333) are guided along the L-shaped guide grooves (41) and (441). When moved together, the cassette holder (25) becomes the sub-board (59).
At the same time, the small cassette (101) is moved in the direction opposite to the loading direction and returned to the original position. In this process, the gears (66) and gears (85) of the sub-board (59) first move along the racks (45) and (46).
Then, the gears (66) and (85) are rotated by the action of the racks (45) and (46) in the opposite direction to the above (when the cassette is inserted). By these rotations, the rotating levers (62) and (64) are also rotated from the position indicated by the alternate long and short dash line in FIG. 4 to the original position, and returned to the position indicated by the solid line. At this time, the tape (109) also needs to be wound into the small cassette (101), but it is wound as follows. That is, when the rotating lever (62) is rotated slightly toward the original position from the position indicated by the one-dot chain line in FIG. 4, the cam (86) is separated from the rotating lever (84). ) Returns to its original position (shown in FIG. 4) by the restoring force of the spring (89). This causes gear (72) to engage gear (71) and gear (78) to engage gear (79). Therefore, when the sub-board (59) moves toward the original position as described above, the rack (4
The rotational force given to the gear (66) by the action of 5) is the gear (67) → (68) → (69) → (70) → (71) →
(72) → Pulley (73) → Belt (76) → Pulley (74) → Pulley (75) → Belt (77) → Pulley (94) → Gear (78) → Gear (79) → Gear (80)
→ Gear (81) → Gear (82) → Take-up reel (10
It is transmitted to the gear (111) with a path of the flange gear (111) of 2). This allows the gear (66)
As (85) rotates and the rotation levers (62) and (64) return to their original positions, the gear (111) also rotates, winding the tape (109) on the take-up reel (102). In this way the tape (109) is the fourth
It is wound up to the original position shown by the chain double-dashed line in the figure.

Under the above conditions, the cams (51) and (52)
By driving the substrate in the reverse direction to the above (59)
Is returned downward to the original position by the cassette holder (25) by the restoring force of the spring (302) or the like. As a result, the tape guides (63) and (65) are moved below the notches (106) and (108) of the small cassette (101) to be taken out, and the gear (82) is also moved downward. Away from (111), then pin (8
7) also moves downward and separates from the small cassette (101). At this time, similarly to the case of the standard cassette (1), the door (23) is opened by a mechanism (not shown) so that the small cassette (101) can be taken out. In the process of taking out the small cassette (101), The opening / closing lid (110) is closed again as indicated by the arrow (Q) in FIG. 7 by the action of the protrusion such as the rotating lever (316) shown in the figure. That is, as shown in FIG. 7, when the small cassette (101) is pulled out, the protrusion of the turning lever (316) causes the opening / closing lid (11).
0), and close the opening / closing lid (110) in the direction of the arrow (Q) indicated by the broken line. When the small cassette (101) is removed from the cassette insertion opening (21), the door (23) is closed. In this way, each unit returns to its original state.

As described above, according to the magnetic recording / reproducing apparatus of the present invention, both the standard cassette (1) and the small cassette (101) can be applied. Of course, the cassette adapter (201) can also be applied.

In the above embodiment, the rotational force of the gear (66) is applied to the rotary lever (6
2) via gears (67)-(70) to tell
Instead of a gear, a combination of a pulley and a belt, a combination of idlers, or the like may be used. Conversely, the pulley (7
The connection between 3) and the pulley (94) may be changed by a combination of gears or idlers. Further, the gear (71) is supported on the rotation lever (84) and the gear (7) is supported.
0) may be engaged or disengaged, or gears (79) and (80) may be supported on a pivot lever (84) to engage or disengage gear (81). You may do it.

Further, in the above embodiment, the vertical movement of the sub-board (59) is
The sub-board (5) pressed downward by the spring (302)
9) is a type in which the cams (51) and (52) are pushed up, but the spring (302) is eliminated and the sub-board (5)
9) may be provided with a mechanism similar to the arm (49) of FIG. 2 and moved up and down, or in order to rotate the gears (66) and (85), a cassette holder ( When (25) moves, racks (45) and (4
Rotational force was obtained by the action of 6), but the cassette holder (25)
The rack plates (43) and (44) are moved by another driving force independently of the movement of the gears (66) and (85).
A rotational force may be applied to. Also the gears (66) and (8
Although 5) is driven by the independent racks (45) and (46), it is also possible to drive only one rack and drive both gears (66) and (85) from this rack through gears. Further turning levers (62) and (64)
Although the upper tape guides (63) and (65) are always standing on these levers, the tape guides (63) and (65) are placed on the turning levers (62) and (64) by a hinge mechanism. A structure may be employed in which the small cassette (101) is attached and laid down, and is erected by a link or a wire only when the small cassette (101) is loaded.

Further, in the above embodiment, the guide plates (27) and (2
Although 8) is designed to move in the vertical direction, it is attached to the top surface of the cassette holder (25) by a hinge mechanism, and the guide plates (27) and (28) are attached to the top surface according to the movement of the link (26). The structure may be such that it hangs vertically or in parallel, that is, it rotatively moves in a double-opening manner.

Although the doors (22) and (23) are provided in the above embodiment, they are not necessarily provided (when the door (22) is not provided, the lock lever (352) is not necessary), and the drive gears, etc. Although it is arranged on the sub-board (59), gears and the like may be arranged directly on the lower surface of the cassette holder (25) to drive them by a method different from the above.

Further, notches are provided in place of the depressions (34) and (35) on the side surface of the cassette holder (25) to provide a tape guide (6).
3) and (65) may be allowed to escape.

In the above embodiment, the sub-board (59) is arranged in the front loading type cassette holder, that is, the slide type cassette holder, but it is not limited to the pandagraph type cassette holder or the rotating type (hinge type). It can also be applied to a magnetic recording / reproducing apparatus having a cassette holder.

〔The invention's effect〕

As described above, according to the present invention, a mechanism portion for pulling out the tape of the small cassette is provided at the bottom of the cassette holder so that either the small cassette or the standard cassette can be loaded. Is unnecessary, and the operator can save time and effort to attach and detach a small cassette to and from the cassette adapter. Furthermore, while the cassette is moved to the regular loading position, the lower surface of the cassette holder, which is a wasted space, is used to place the sub-board under the cassette holder. There is an effect that can be added with almost no increase.

[Brief description of drawings]

1 is an external front view showing a magnetic recording / reproducing apparatus according to an embodiment of the present invention, FIG. 2 is a view showing a structure of a cassette mounting portion of FIG. 1, and FIG. 3 is a view showing a structure of a sub-board portion. , 4th
Fig. 5 is a top view of Fig. 3, Fig. 5 shows how the cassette holder and sub-board are connected, Fig. 6 shows a mechanism for moving the guide plate up and down, and Fig. 7 shows opening and closing of a small cassette. FIG. 8 is a view showing an opening / closing mechanism of the lid, FIG. 8 is a view showing a driving mechanism of the cam,
FIG. 9 is a view showing the relationship between the cassette holder and the tape guide, FIG. 10 is a view showing a state in which the take-up reel base and the take-up reel are coupled via a gear, and FIG. 11 is a take-up gear portion. Fig. 12 shows the structure of the lock releasing pin, Fig. 13 shows the structure of the door and guide, and Figs. 14 (a) and (b) show the conventional magnetic structure. FIG. 15 is a diagram showing an example of a recording / reproducing apparatus, FIG. 15 is a diagram showing a small cassette, and FIG.
FIG. 6 is a view showing a small cassette and a cassette adapter, and FIG. 17 is a view showing a state of the small cassette stored in the cassette adapter. In the figure, (1) is a standard cassette, (10) is a magnetic recording / reproducing device, (18) is a take-up reel stand, (21) is a cassette insertion slot, (22) and (23) are doors, and (25) is Cassette holder, (26), (36) are links, (27),
(28) is a guide plate, (43) and (44) are rack plates,
(45) and (46) are racks, (51) and (52) are cams, (56) and (57) are holes, (59) is a sub-board,
(60) and (61) are holes, (62) and (64) are rotary levers, (63) and (65) are tape guides, and (66) to
(72) is a gear, (73) to (75) and (94) are pulleys, (76) and (77) are belts, and (78) to (82).
Is a gear, (83) is a spring plate, (84) is a rotating lever,
(85) is a gear, (86) is a cam, (87) is a pin, (1
01) is a small cassette, (102) is a take-up reel,
(106) and (108) are notches, (109) is tape, (111) is gear, (302) is spring, (31) is
0) and (311) are rotary levers, and (334) and (33).
5) is a hole, (345) is a spring, (350), (351)
Is a rotation lever, (352) is a lock lever, and (35
3) and (354) are guides. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (16)

[Claims] 1. At least a plurality of movable tape guides and a movable rotating member are provided in a lower portion of a cassette holder, and when the small cassette is loaded in the cassette holder, the tape guide is inserted into a cutout portion of the small cassette. After that, the tape of the small cassette is pulled out, and at the regular loading position, the rotating member is engaged with both the take-up reel stand of the magnetic recording / reproducing device and the take-up reel of the small cassette, while the standard cassette is loaded into the cassette holder. In this case, the tape guide is arranged so as to escape to the outside of the space occupied by the standard cassette, and the rotary member is arranged so as to escape downward in the cassette holder at the regular loading position. And a magnetic recording and reproducing device. 2. The tape guide is supported by a movable member, and a gear or pulley or other drive provided on the substrate is moved so that this member moves relatively to the lower surface of the cassette holder in a direction toward and away from the lower surface. The magnetic recording / reproducing apparatus according to claim 1, wherein the magnetic recording / reproducing apparatus is configured to move by a mechanism. 3. A substrate is disposed below a cassette holder, a driven body is provided on the substrate, and the driven body is rotated by a driving body provided outside the cassette holder,
The magnetic recording / reproducing apparatus according to claim 2, wherein the driving force applied to the driven body is transmitted to a driving mechanism of the movable member. 4. A rotating member is movable in the supporting shaft direction through a hole of a cassette holder, and is engageable with a member which is displaced by a standard cassette inserted in the cassette holder.
The rotation member is moved in the lower surface direction of the cassette holder according to the displacement of the member.
5. The magnetic recording / reproducing apparatus according to any one of items 3 to 3. 5. The substrate according to claim 1, wherein the substrate is supported by a cassette holder, and when the cassette holder moves, the substrate can move as a unit. Magnetic recording and reproducing device. 6. The substrate is supported by the cassette holder in a direction in which the substrate is separated from the cassette holder by an elastic force, and a cam contacting the substrate is driven so that the substrate approaches the cassette holder against the elastic force. The magnetic recording / reproducing apparatus according to claim 1, wherein the magnetic recording / reproducing apparatus is configured as described above. 7. A means for transmitting a driving force to a rotating member according to the movement of a tape guide, can be engaged with or separated from the rotating member or a rotating body engaging with the rotating member. The magnetic recording / reproducing apparatus according to claim 1. 8. The transmission means comprises a movable lever that pivotally supports a pulley or the like around which a gear or a belt is connected to transmit a rotational force, and the movable lever moves the lever that supports the tape guide. 7. The structure according to claim 7, wherein the gear or the pulley moves to a position where the drive unit for driving the tape guide and the rotary member are engaged with or separated from each other. The magnetic recording / reproducing apparatus according to the item. 9. A movable lever in the transmission means is moved by the action of a cam provided at the end of the movable lever that supports the tape guide, and when the tape guide is returned to the cutout portion of the small cassette in the small cassette loaded state. 9. The magnetic recording according to claim 8, wherein the driving force applied to the tape guide is transmitted to the rotating member to rotate the take-up reel so as to take up the small cassette tape. Playback device. 10. A take-up reel lock pin for a small cassette is movably arranged in a hole of a cassette holder, and when the small cassette is loaded, the pin projects into the cassette holder and the take-up reel. 2. The magnetic recording / reproducing apparatus according to claim 1, wherein the lock is configured to be unlocked, while the protrusion of the pin is blocked on the bottom surface of the standard cassette when the standard cassette is loaded. 11. The pin according to claim 10, wherein the pin is supported on the substrate, is movable in the axial direction, and is constantly displaced by a spring toward the cassette holder.
The magnetic recording / reproducing apparatus according to the item. 12. A movable guide plate for guiding when a small cassette is inserted is provided on the upper surface side of a cassette passage, and the guide plate is a rotating lever that rotates when a standard cassette is inserted into a cassette holder. The magnetic recording / reproducing apparatus according to claim 1, wherein the magnetic recording / reproducing apparatus is configured to be moved by a link that operates in accordance with the operation of (1) and move to the outside of the entrance passage of the standard cassette. 13. A rotating lever is located at the cassette holder inlet and at a position away from an insertion passage of a small cassette, at least a part of which is arranged so as to project into the cassette holder, and a standard cassette is inserted. 13. The magnetic recording / reproducing apparatus according to claim 12, wherein the protruding portion is pressed to rotate. 14. A cassette insertion opening is provided with first and second doors, and when the standard cassette is inserted, the first and second doors are pushed open by the front surface of the standard cassette to insert a small cassette. The magnetic recording / reproducing apparatus according to claim 1, wherein the second door is pushed open. 15. A rotary lever is arranged at a position where a part of the door is projected to the outside of the door and apart from an insertion passage of a small cassette, and a lock lever which interlocks with the rotary lever is provided. Locked to the first door by lever,
7. When the standard cassette is inserted, the rotating lever is pressed and rotated by the cassette, and accordingly, the lock lever moves in an interlocking manner to unlock the first door. 14. A magnetic recording / reproducing apparatus according to item 14. 16. A guide for guiding a small cassette that moves in conjunction with a rotating lever is provided, and this guide serves as a guide for determining an entrance passage of the small cassette inserted from the second door portion, while inserting a standard cassette. 15. The rotating lever is pressed by a standard cassette to rotate when it does so that the guide also moves in conjunction with it to move to the outside of the entrance passage of the standard cassette. 15. A magnetic recording / reproducing apparatus according to item 15.