JP2536259B2 - Magnetic recording / reproducing device - Google Patents

Description

The present invention relates to a small-sized magnetic recording / reproducing apparatus for movies and the like.

[Conventional technology]

FIGS. 10 to 13 are views showing a conventional magnetic recording / reproducing apparatus disclosed in, for example, Japanese Patent Laid-Open No. 232747/1987, and FIG. 10 is a front view showing a state in which a cassette is not mounted, and FIG. FIG. 12 is a front view showing a state in which a cassette is mounted, FIG. 12 is a cross-sectional side view of a main part with respect to FIG. 10, and FIG. 13 is a perspective view of the tape supply side reel stand in FIG.

In the figure, (1) is a cassette positioning pin for positioning the tape cassette (9) at a predetermined position of the apparatus, which is set up on the deck base (2). Reference numeral (3) is a pin for holding the tape cassette (9), which is set up on the deck base (2). (4) is a tape supply side reel stand (5)
Is a shaft for holding the tape winding force transmitting gear (7) in a freely rotatable manner, and this shaft (6) is planted in the deck base (2) together with the shaft (4). It is standing.
(8) is an idler for transmitting the tape winding force to the tape supply reel stand (5) and the tape winding force transmission gear (7), and (10) is a magnetic tape (2) together with the pinch roller (11).
8) Capstan for holding and transferring, (12) is audio and control head (13), (14), (1
5), (16), (17), (18), (20), (21), (2
3), (24) and (25) are tape running guides, (19) is a tape take-up side guide slider for arranging and transferring the tape running guides (17) and (18), and (22) is a tape running guide. A tape supply side guide slider for arranging and transferring (20) and (21), and (26) is a tension pin for controlling the tension of the magnetic tape (28) during traveling to a predetermined value.

 Next, the operation will be described.

The tape cassette (9) is mounted at the position indicated by the chain double-dashed line in FIG. 10, and the bottom surface of the reel is the contact surface (5a) of the reel stand (5).
, The guide slider (19) moves in the direction of the arrow A and the guide slider (22) moves in the direction of the arrow B. By this operation, the tape running guides (17), (1
8) is in the direction of arrow A, and the tape running guides (20), (2
1) moves in the direction of arrow B respectively. Further, the tape running guides (13), (15) and (25), the tension pin (26) and the pinch roller (11) are also moved in the directions of arrows C, D, E, F and G by levers not shown. By the above operation, the magnetic tape (28) loaded in the tape cassette (9) is pulled out, and the magnetic tape (28) is guided to a predetermined position around the head drum (27) as shown in FIG. Form a driving path. Then, the magnetic tape (28) is formed by the capstan (10) and the pinch roller (11).
Is sandwiched and transported at a predetermined speed, and a signal is recorded or reproduced on the magnetic tape (28) by the head mounted on the head drum (27).

[Problems to be Solved by the Invention]

Since the conventional magnetic recording / reproducing apparatus is configured as described above, there is a problem that the apparatus is large and bulky when carried even in the carrying mode in which the tape cassette is not attached to the apparatus.

The present invention has been made in order to solve the above problems, and when the tape cassette is not attached to the apparatus, such as when the apparatus is carried, the apparatus can be made small, and thus the portability can be improved or the installation space can be reduced. The purpose is to obtain a playback device.

[Means for solving the problem]

The magnetic recording / reproducing apparatus according to the present invention is provided with a cassette positioning pin holding member for vertically holding the cassette positioning pin so that the tape cassette is mounted at a predetermined position with respect to the apparatus in a tape running mode such as recording or reproducing. The cassette positioning pin holding member is configured so that the cassette positioning pin can be moved toward the head drum in a carrying mode in which the cassette positioning pin is fixed and the tape cassette is not attached to the device when carrying the tape cassette. In order not to impair the function of abutting and holding the arc-shaped bottom surface having the diameter defined by the standard of the reel loaded in the reel, at least one position of the arc-shaped reel receiving surface of the reel base is cut out, and this cutting is performed. Adjust the rotation position of the reel stand so that the part of the missing string is located on the side opposite to the head drum. It is obtained by constituting a mechanism for.

[Action]

In the present invention, in the tape running mode, the cassette positioning pin fixes the tape cassette at a predetermined position with respect to the apparatus, and in the carrying mode, the cassette positioning pin holding member is moved to the drum side, and the reel base rotation position correction mechanism is used. The device is miniaturized by configuring so that the string portion is located on the side opposite to the head drum.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a front view showing a state in which the apparatus is contracted, and FIGS. 2 (a) to (e) are main part front views showing movements of a cassette positioning pin and position control of a tape supply side reel stand, and FIG. The figure is a front view showing a state in which the apparatus is extended, and FIGS. 4 (a) to 4 (e) are main part front views showing the same operation as FIG.
FIG. 5 is an exploded perspective view of the main part of FIG. 1, FIG. 6 is a perspective view of the tape supply side reel stand of FIG. 1, and FIG.
It is a cross-sectional side view of a main part of the drawing, and the same or corresponding parts as those of the conventional device are designated by the same reference numerals and the description thereof will be omitted.

In the figure, (5A) is a tape supply side reel stand, and three arcuate reel receiving surfaces (5a) are notched so as to form a string. Reference numeral (30) is a cassette positioning pin holding member in which the cassette positioning pin (1) is erected, and is slidably held by the pin (31) erected in the deck base (2), and the retaining ring (32). It is locked in. (Four
(0) is a drive motor attached to the deck base (2), (42) is a speed reduction unit for decelerating and transmitting the rotational force of the drive motor (40), (42) is a pinion gear, and is a cassette positioning pin holding member (30) It meshes with the rack portion (30a) formed on the. (50) is a rotation position correcting mechanism of the tape supply side reel stand (5A), which is a reel control lever A (34), a reel control lever B (35), a pin (33), a shaft (36), and a shaft (3).
7), a spring (38) and a spring (39), which will be described in detail below. The cassette positioning pin holding member (30) includes a pin (33) that determines a rotation stop position of the reel control lever A (34) and a shaft (36) that rotatably supports the reel control lever A (34). It has been planted. The reel control lever A (34) is rotatably supported around the shaft (36),
The retaining ring (32) keeps it from coming off and the spring (38) urges it counterclockwise. Also, the reel control lever A
A shaft (37) for rotatably supporting the reel control lever B (35) is erected in (34), and the reel control lever B (35) is rotatably supported around the shaft (37). At the same time, the spring (39) urges it clockwise, and the retaining ring (32) prevents it from coming off.

 Next, the operation will be described.

Recording on a portable device without attaching the tape cassette (9) to the device
FIG. 1 shows the state at the second position in the carrying mode in which the reproduction is not performed. From the state of the second position to the state of the first position where the tape cassette (9) is mounted in the device, the cassette positioning pin holding member (30) and the rotation position correction mechanism (50) of the tape supply side reel stand (5A) The operation is shown in FIG.

In Fig. 2 (a), the tape supply side reel stand (5A)
Is the inner wall (30b) of the cassette positioning pin holding member (30)
By this, the rotational movement is braked and the positioning is performed. When the cassette positioning pin holding member (30) is moved in the direction of arrow X by driving the drive motor (40) from the state shown in FIG. 2 (a), the state shown in FIG. 2 (b) is reached. (35) begins to contact the tape supply side reel stand (5A). In addition, the cassette positioning pin holding member (3
When (0) is moved in the direction of arrow X, FIG.
In this state, the reel control lever B (35) rotates counterclockwise while being urged clockwise by the spring (39) around the shaft (37), and this urging force causes the tape supply reel stand (5A) to move. Rotate counterclockwise. When the cassette positioning pin holding member (30) is further moved in the direction of arrow X, the state shown in FIG. 2 (d) is passed and the state shown in FIG. 2 (e) is reached. In this state, the reel control lever A (34) is fixed by being urged counterclockwise around the shaft (36) by the spring (38) and contacting the pin (31). The reel control lever B (35) is fixed around the shaft (37) by being urged clockwise by a spring (39) and coming into contact with the shaft (36).
Note that the tape supply side reel stand (5A) is freely rotatable around the shaft (4), and the cassette positioning pin (1) also becomes a predetermined position for determining the position of the tape cassette (9) with respect to the apparatus, as shown in FIG. When the tape cassette (9) is mounted at the position indicated by the chain double-dashed line, the guide slider (19) moves in the direction of arrow A and the guide slider (22) moves in the direction of arrow B. This operation causes the tape running guide (17) to move. ),
(18) again in the direction of arrow A, the tape running guide (20),
(21) move in the direction of arrow B. Further, the tape running guides (13), (15) and (25), the tension pin (26) and the pinch roller (11) are also moved in the directions of arrows C, D, E, F and G by levers not shown. By the above operation, the magnetic tape (28) loaded in the tape cassette (9) is pulled out, and the magnetic tape (28) is guided to a predetermined position around the head drum (27) as shown in FIG. Form a path. Then, the magnetic tape (28) is formed by the capstan (10) and the pinch roller (11).
And the tape running mode of the first position is sandwiched between the head drum and the head drum (27) to record or reproduce a signal on the magnetic tape (28).

Next, from the first position of the tape running mode shown in FIG. 3 in which the tape cassette (9) is mounted in the apparatus and recording or reproduction is performed, the tape cassette (9) is not mounted in the apparatus in the carrying mode of the portable mode. The operation of the cassette positioning pin holding member (30) up to the two positions and the rotation position correction mechanism (50) of the tape supply side reel stand (5A) is shown in FIG.

In FIG. 4 (a), the tape supply side reel stand (5A)
Is freely rotatable around the shaft (4), and the reel control lever A (34) is urged counterclockwise around the shaft (36) by the spring (38) to contact the pin (31). The reel control lever B (35) is urged clockwise by the spring (39) around the shaft (37) to be fixed by the shaft (36).
It is fixed by abutting against. Next, when the cassette positioning pin holding member (30) is moved in the direction of the arrow Y by driving the drive motor (40), the reel control lever A (34) is moved around the shaft (36) by the spring (38). It rotates counterclockwise and the reel control lever B (35) begins to contact the tape supply side reel stand (5A) as shown in FIG. 4 (b). When the cassette positioning pin holding member (30) is further moved in the direction of arrow Y, the reel control lever A (34) is moved around the shaft (36) by the spring (38) as shown in FIG. 4 (c). It is urged to rotate counterclockwise, and the reel base (5A) on the tape supply side is rotated clockwise about the axis (4) via the reel control lever B (35). Furthermore, cassette positioning pin holding member (30)
Is moved in the direction of arrow Y, the reel control lever B (35) is separated from the tape supply side reel base (5A) as shown in FIG. 4 (d), and the cassette positioning pin holding member (30) is moved. The inner wall (30b) begins to come into contact with the tape supply side reel stand (5A). When the cassette positioning pin holding member (30) is further moved in the direction of the arrow Y, the state shown in FIG. 4 (e) is reached and the tape supply side reel stand (5A) is attached to the inner wall of the cassette positioning pin holding member (30). (30b) brakes the rotational movement and is positioned, and the reel control lever A (34) is urged counterclockwise around the shaft (36) by the spring (38) and fixed by contacting the pin (33). Then, the reel control lever B (35) is urged clockwise around the shaft (37) by the spring (39) to rotate the shaft (36).
It is fixed by abutting against. By the operation shown in FIG. 4, the state at the second position of the carrying mode is formed, and the apparatus is miniaturized as shown in FIG.

In addition, in the above embodiment, the tape supply side reel stand (5A) is shown by cutting the arcuate reel receiving surface (5a) at three positions so as to form a chord, but as shown in FIG. It may be a reel stand (5B) having a string in one place, and one or more notches may be used to implement the present invention. Further, it is not necessary for the reel base rotation position correction mechanism (50) to directly operate this cutout portion, and the reel base rotation position correction mechanism is provided on the tape supply side reel base (5B) as shown in FIGS. 8 and 9. A structure that engages with (60) may be configured. 8th
In Fig. (A), the cassette positioning pin holding member (3
0) is the drive motor (40) shown in FIG. 1 in the direction of arrow W.
When it is moved by driving the rack positioning pin holding member (30), the rack portion (30c) of the cassette positioning pin holding member (30) starts to engage with the pinion (60a) of the reel base rotation position correction mechanism (60), and this pinion (60a ) And a gear (6
0b) decelerates and rotates the tape supply side reel stand (5B), and engages with the reel stand rotation position correction mechanism (60) provided on the tape supply side reel stand (5B) The engagement between the reel base rotation position correction mechanism (60) and the tape supply side reel base (5B) is cut off at the notched portion (5b). Then, as shown in FIG. 8 (b), the notched string portion of the tape supply side reel base (5B) is provided on the shaft (4) which pivotally supports the tape supply side reel base (5B). On the other hand, it is located on the opposite side of the head drum (27). The portion (5c) shown in FIG. 9 is a gear that engages with the idler (8).

〔The invention's effect〕

As described above, according to the present invention, when the tape cassette is not attached to the apparatus, the cassette positioning pin is moved to the head drum side. Therefore, the apparatus can be made compact when being carried or stored, and thus the portability can be improved. There is an effect that the one that can improve or narrow the installation space can be obtained.

[Brief description of drawings]

FIG. 1 shows that in a magnetic recording / reproducing apparatus according to an embodiment of the present invention, the cassette positioning pin moves to the head drum side and the notched portion of the tape supply side reel stand is position-controlled to the side opposite to the head drum, and the apparatus shrinks. 2 (a) to 2 (e) are front views of the main part of FIG. 1 showing the movement of the cassette positioning pins and the position control of the tape supply side reel stand, and FIG. 3 is the cassette. FIG. 4 is a front view showing a state in which the positioning pin moves to a position where the tape cassette is set at a predetermined position with respect to the apparatus and the apparatus is extended and the cassette is mounted. FIG. 4 is the same as FIG. FIG. 6 is an exploded perspective view of a cassette positioning pin, a reel control lever, and a cassette positioning pin holding member in FIG. 1 is a perspective view of the reel stand on the tape supply side in FIG. 1, FIG. 7 is a sectional side view of an essential part in FIG. 1, and FIGS. 8 (a) and 8 (b) are cassette positioning pins in another embodiment of the present invention. And FIG. 9 is a front view of an essential part showing the operation of moving the tape and controlling the position of the reel base on the tape supply side.
The tape supply side reel stand in the figure
FIG. 10 is a front view showing a state in which a cassette is not mounted in a conventional magnetic recording / reproducing apparatus, FIG. 11 is a front view showing a state in which a cassette is mounted, FIG. 12 is a cross-sectional side view of a main part with respect to FIG. The figure is a perspective view of the tape supply side reel stand in FIG. In the figure, (1) is a cassette positioning pin, (2) is a deck base, (5A) and (B) are tape supply side reel stands, (9) is a tape cassette, (27) is a head drum,
(28) is a magnetic tape, (30) is a cassette positioning pin holding member, and (50) and (60) are correction mechanisms. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

(57) [Claims] 1. A head drum equipped with a head for recording or reproducing a signal on or from a tape cassette in which a supply reel and a winding reel on which a magnetic tape is wound are loaded in parallel. In a magnetic recording / reproducing apparatus that guides the magnetic tape to a predetermined position, a first position of a tape running mode for recording or reproducing, and a tape cassette that is located closer to the head drum than the first position. A second position in the carrying mode in which the tape cassette is not mounted, a cassette positioning pin that positions the tape cassette at a predetermined position with respect to the apparatus in the state of the first position, the cassette positioning pin is set up and held, and the first position and the second position are set. A cassette positioning pin holding member that is movably supported between the tape cassette and the position; A reel stand which is formed by cutting out at least one position of an arcuate receiving surface that abuts and holds the formed reel, and a part of the notched string on the reel receiving surface of the reel stand at the stand 2 position. A magnetic recording / reproducing apparatus, comprising: a correction mechanism for rotating the reel base so that the reel base is located on the side opposite to the head drum with respect to an axis that rotatably supports the reel base.