JPH0522979B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a recording and reproducing apparatus, and particularly to a recording and reproducing apparatus that is miniaturized.

[Background of the invention]

FIG. 1 is a plan view showing an example of a conventional recording/reproducing apparatus.

1 is a chassis as a main board, 2 is a rotating cylinder on which a magnetic head is mounted, and 3 is a cassette.
Inside the cassette 3, a supply reel 5 and a take-up reel 6, on which a magnetic tape 4 is wound, are arranged in parallel. Reference numeral 7 designates an entry-side guide base on which an entry-side inclined guide and a guide roller are mounted, 8 similarly designates an exit-side guide base, and 9 designates a pull-out roller.

During loading, the guide bases 7 and 8
The pull-out roller 9 pulls out the magnetic tape 4 from the inside of the cassette 3 and moves it along a groove provided in the guide plate 10. The magnetic tape 4 is positioned near the rotary cylinder 2 in a predetermined positional relationship, and the magnetic tape 4 is wound around the rotary cylinder 2 in a spiral manner over a predetermined angle.

Further, 11 is a tension pin that detects the tension of the running magnetic tape 4, and the tape is fed out on the supply side reel 5 so that a predetermined tape tension is applied to the running magnetic tape 4 based on the detected tension. Control the load.

12 is an impedance roller for absorbing longitudinal vibration of the magnetic tape 4; 13 and 14 are capstans and pinch rollers for pressing and driving the magnetic tape 4; 15 is a capstan motor for driving the capstan 13; A loading motor 16 drives the entry and exit guide bases 7 and 8 and the pull-out roller 9.

In a recording/reproducing apparatus having such a structure, when the cassette 3 is installed in the apparatus, the guide bases 7 and 8, the pull-out roller 9 and the pinch roller 14 are placed between the opening of the cassette 3 and the front part thereof. It is necessary to insert the tape between the magnetic tapes 4 that are stretched on the magnetic tape 4. Further, at this time, it is necessary to prevent the rotary cylinder 2 from coming into contact with the magnetic tape 4.

Therefore, when trying to downsize a recording/reproducing device, the vertical length of the entire device (L in the figure) is almost determined by the size of the cassette 3 and the rotary cylinder 2 used, and the Downsizing was difficult.

[Purpose of the invention]

An object of the present invention is to solve the above-mentioned disadvantages of the conventional technology in a recording/reproducing device.
Specifically, the objective is to downsize the recording and reproducing apparatus by making it possible to store the cylinder in the opening of the cassette.

[Summary of the invention]

This invention comprises a chassis as a main board to which a rotating cylinder is attached, a tape guide means for winding the tape around the outer periphery of the rotating cylinder, and a sub-chassis as an auxiliary board on which a reel stand is placed and moved so as to overlap the main board. This can be applied to a recording/reproducing device equipped with the following.

The present invention includes: a first drive means configured to move the tape guide means from the initial tensioned position of the tape between the reels and pull out the tape from the reel by movement of the sub-chassis; A second drive means configured to move the tape guide means so that the tape is subsequently wound around the outer periphery of the rotating cylinder following the operation of the first drive means. .

[Embodiments of the invention]

The present invention will be explained below with reference to Examples. 2A, B and 5 show plan views of embodiments of the invention. FIG. 5 is a simplified model diagram of FIG. Here, Figure A is a plan view before the cassette holder is moved, and Figure B is a plan view after the cassette holder is moved. Note that the same or equivalent parts corresponding to those in FIG. 1 are indicated by the same reference numerals.

In FIG. 2, reference numeral 17 places the cassette 3 on the reel stand and moves the chassis 1 in the direction of the rotating cylinder 2.
This is a sub-chassis that moves along the guide section.

Further, 19 is a guide driving member directly connected to the sub-chassis 17, and 20-1 is a first gear that engages with the guide driving member 19. 20-2 is a second gear that meshes with the first gear 20-1 and transmits the rotation of the gear 20-1 to the loading ring 21. 20-3 is loading ring 21
This is a third gear that meshes with the third gear and transmits the rotation of the loading 21 to the guide moving arm 22.

The loading ring 21 is connected to the entry and exit guide bases 7, 8 and the pull-out roller 9, and serves to move them. Further, the guide moving arm 22 functions to move the exit guide base 8.

Furthermore, 23 is a guide moving arm that moves the pinch roller 14, 23 is a pinch roller moving arm that moves the pinch roller 14, and 24-1, 2
4-2 is a loading gear that drives the loading ring 21 by the loading motor 16;
Reference numeral 25 denotes a biasing spring for determining the position of the sub-chassis 17 after movement.

Next, the operation of this embodiment will be explained.

When the sub-chassis 17 is moved manually or the like in the direction of the rotary cylinder 2 (in the direction of arrow C) against the force of the sub-chassis biasing spring 25, the guide driving member that passes directly through the sub-chassis 17 is moved. 19 is the guide driving gear 20-
1 and 20-2 in the direction of the arrow D, and the loading ring 21 is driven in the direction of the arrow D. As a result, the entry guide base 7 and the pull-out roller 9 connected to the loading ring 21 are pulled out from the opening of the cassette 3 and moved.

Further, the loading ring 21 moves the guide moving arm 22 via the guide driving gear 20-3, and moves the guide moving arm 22 to the exit guide base 8.
is similarly moved out of the opening of the cassette 3. Further, the pinch roller moving arm 23 moves together with the guide base moving arm 22, and similarly moves the pinch roller 14 out of the opening of the cassette 3.

Simultaneously with the movement of the sub-chassis 17, the cassette 3 is moved in the direction of the rotating cylinder 2 (in the direction of arrow C), and the cassette 3 is moved as much as possible to a position where it does not come into contact with the rotating cylinder 2. This causes the rotating cylinder 2 to be stored within the opening of the cassette 3, as shown in FIG. 2B.

Thereafter, the loading ring 21 rotates, the gear 24-2 engages with the teeth of the loading ring 21, and the driving force of the loading motor 16 is switched and transmitted with the driving force of the sub-chassis 17. The guide bases 7 and the like on the entry and exit sides move to predetermined positions, and the magnetic tape 4 is wound around the rotating cylinder 2. In this configuration, the tape guide means is a part configured to wrap the tape around the outer periphery of the rotating cylinder, and includes the guide bases 7 and 8 on the entry and exit sides, the pull-out roller 9, and the pinch roller 14 (in the initial stage of loading). (The function is to pull out the tape from the cassette opening.)
falls under this category. Further, the first driving means is a component that moves the guide means using the movement of the auxiliary board as a driving source, and is a guide driving member 1 that is integrally provided on the auxiliary board (sub chassis 17).
9. This includes the guide drive gear 20, loading ring 21, and guide drive arm 22 that transmit the movement of the auxiliary board. The second driving means is a component that moves the guide means to perform loading after the auxiliary board has moved a predetermined distance, and includes a loading motor 16, a loading gear 24, a loading ring 21 (a loading gear and a loading gear). This applies to the parts that engage.

Although the moving mechanism of this embodiment is an example in which the loading ring 21 is driven by the movement of the sub-chassis 17, the loading motor 1
A system in which the loading ring 21 and the sub-chassis 17 are driven by a motor such as 6 is also easily considered. Also, loading ring 21 at this time
and the sub-chassis 17 may be driven separately. Furthermore, insert the cassette into the sub chassis 17.
, move the loading ring 21 to move the guides out of the opening, and then
The cylinder 2 rotates the sub chassis 17 and the cassette 3.
It may be moved in the direction of.

Next, a method of mounting the cassette 3 will be explained with reference to FIGS. 3A to 3C. Note that FIG. 3 shows a side view of the magnetic recording/reproducing apparatus of this embodiment.

In FIGS. 3A to 3C, 18 is the cassette 3.
It is a cassette box for attaching. Further, other symbols indicate the same items as in FIG. 2.

As shown in FIG. 3A, the cassette box 1
8 is raised, the cassette 3 is installed in the cassette box 18 from the direction of arrow a.

Next, as shown in B, the cassette box 18 with the cassette 3 attached thereto is lowered in the direction of arrow b and held on the subchassis 17. At this time, the front cover 3-1 for protecting the tape of the cassette 3 is brought into contact with a cover opening member (not shown) and opened.

Next, as shown in C, the sub-chassis 17 holding the cassette 3 is moved in the direction of the rotary cylinder 2 (in the direction of arrow C). As a result, as described above, the input and output guide bases 7, 8 and the pull-out roller 9, which were stored in the opening of the cassette 3, move while pulling out the tape from the opening, and the tape is moved during loading. (half-loading) condition.

As a result, a portion of the rotary cylinder 2 is housed within the opening of the cassette 3, and the longitudinal length of the chassis 1 is shortened from L in the conventional example to l.

Figure 4 shows the cassette 3 in Figure 2B or Figure 3C.
A plan view of the magnetic recording/reproducing device when inserted to the position shown in FIG.

As shown in the figure, at this time, the guides such as the guide bases 7 and 8 on the entry and exit sides and the pull-out roller 9 are half-loaded, and there are no obstacles in the opening of the cassette 3. Also,
It is clear that a part of the rotary cylinder 2 is stored inside the opening of the cassette 3, and the length of the chassis 1 in the vertical direction is 1, which is shortened from L in the conventional example. be.

〔Effect of the invention〕

According to the present invention, the guides located inside the opening of the cassette are moved out of the opening (half-loading), or at the same time, the cassette is moved toward the rotating cylinder and the rotating cylinder is housed to the maximum extent within the cassette opening. Therefore, restrictions on the size of the device, which were conventionally determined by the sizes of the rotary cylinder and the cassette, are lifted, making it possible to significantly downsize the device.

[Brief explanation of drawings]

Fig. 1 is a plan view of a conventional recording/reproducing device, Fig. 2 is a plan view of an embodiment of the present invention showing a moving mechanism for guides, Fig. 3 is a side view of this embodiment, and Fig. 4 is a plan view of a conventional recording/reproducing device. Plan view of this embodiment during half loading, No. 5
The figure is a simplified model diagram of FIG. 1... Chassis, 2... Rotating cylinder, 3... Cassette, 4... Magnetic tape, 7, 8... Guide base, 1
7...Sub chassis, 19...Guide drive member, 2
0... Guide driving gear, 21... Loading ring, 22... Guide moving arm.

Claims (1)

[Claims] 1. A main board to which a rotating cylinder is attached, a tape guide means for winding the tape around the outer periphery of the rotating cylinder, and an auxiliary board on which a reel stand is placed and moved so as to overlap the main board. a first driving means configured to move the tape guide means from an initial tensioning position of the tape between the reels and pull out the tape from the reel by movement of the auxiliary board; After the auxiliary board has moved a predetermined distance in the direction of the rotating cylinder, a second tape guide means is configured to move the tape guide means so as to wrap the tape around the outer periphery of the rotating cylinder following the operation of the first driving means. A recording and reproducing device comprising: a driving means;