JPH0821184B2 - Recording and playback device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing device, and more particularly to a device structure for downsizing the device. 2. Description of the Related Art FIG. 5 is a plan view showing an example of a conventional recording / reproducing apparatus. Reference numeral 1 is a chassis, 2 is a rotary cylinder on which a magnetic head is mounted, and 3 is a cassette. In the cassette 3, a supply-side reel 5 around which the magnetic tape 4 is wound and a winding-side reel 6 are arranged in parallel. Reference numeral 7 is an entrance-side guide base on which an entrance-side inclined guide and a guide roller are mounted, 8 is an exit-side guide base, and 9 is a drawer roller. At the time of loading, the guide bases 7 and 8 and the pull-out roller 9 pull out the magnetic tape 4 from the cassette 3 and move it along the groove provided in the guide guide plate 10. Then, 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 shape at a predetermined angle. Numeral 11 is a tension pin for detecting the tension of the running magnetic tape 4, and the supply side reel 5 so that a predetermined tape tension is applied to the running magnetic tape 4 by the detected tension. Controls the tape feeding load at. Reference numeral 12 is an impedance roller for absorbing the longitudinal vibration of the magnetic tape 4, 13 and 14 are capstans and pinch rollers for driving the magnetic tape 4 under pressure, and 15 is for driving the capstan 13. The capstan motor, 16 is the guide base 7,
8. A loading motor for driving the pull-out roller 9. In the recording / reproducing apparatus having such a structure, when the cassette 3 is mounted in the apparatus, the guide bases 7 and 8, the pull-out roller 9 and the pinch roller 14 are connected to the opening portion of the cassette 3. It is necessary to insert it between the magnetic tapes 4 stretched on its front part. At this time, it is necessary to prevent the rotary cylinder 2 from coming into contact with the magnetic tape 4. Therefore, when miniaturizing the recording / reproducing apparatus, the length of the entire apparatus (L in the drawing) is substantially determined by the sizes of the cassette 3 and the rotary cylinder 2 used, and the size is further reduced. It was difficult to convert. In contrast,
A recording / reproducing apparatus capable of storing a part of a rotary cylinder in an opening portion of a cassette and realizing a reduction in length of the entire apparatus is disclosed in Japanese Patent Laid-Open No. 59-107447 as a known example and as a prior application. It is described in JP-A-59-171070. Here, in the realization of a recording / reproducing apparatus in which a part of the rotary cylinder can be stored in the opening of the cassette to realize miniaturization, the tape guide pulls out the tape or winds the rotary cylinder at a predetermined angle, and There are the following two problems regarding the timing relationship between the opening and the retracting operation of the rotary cylinder. 1) In the vicinity of the opening of the cassette, the tape, the tape guide, and the rotary cylinder are close to each other and change the relative positional relationship, so that mutual contact and interference easily occur. 2) With respect to the timing relationship between the completion of the storing operation of the rotary cylinder into the opening of the cassette and the completion of the tape winding operation of the tape guide on the rotating cylinder, the completion of the tape winding operation on the tape guide of the rotating cylinder is preceded. Then, since the distance between the cassette and the rotary cylinder is shortened by the subsequent storing operation of the rotary cylinder with respect to the opening of the cassette, the tape on the already completed tape running path is slackened. Regarding the problem of these operation timings, there is no particular description in JP-A-59-107447. Further, in the above-mentioned JP-A-59-171070, in the second embodiment, the operation of pulling out the tape guide or winding the tape around the rotary cylinder is first completed, and then the operation of storing the rotary cylinder in the opening portion of the cassette. Start
The configuration to be completed is described. According to this configuration,
Although the problem 1) is solved, the problem 2) remains. SUMMARY OF THE INVENTION An object of the present invention is to provide a recording / reproducing apparatus which solves the above-mentioned problems of the prior art and stores a part of a rotary cylinder in an opening of a cassette to realize miniaturization. To provide. In order to achieve the above object, according to the present invention, a tape guide is provided until the movement of a cassette holder as an auxiliary substrate on which a cassette is placed in the direction of the rotating cylinder is completed. The means is moved from inside the opening of the cassette to the outside thereof, and after the movement of the auxiliary substrate in the direction of the rotating cylinder is completed, the tape guide means is further moved,
The tape is wound around the outer circumference of the rotating cylinder. With the above construction, the tape guide means is moved to the outside of the opening portion of the cassette at an early stage, and the interference between the rotary cylinder and the tape guide means in the opening portion of the cassette is solved.
Further, it is possible to obtain the effect of avoiding the occurrence of slack in the tape during the tape loading process. An embodiment of a recording / reproducing apparatus according to the present invention will be described below with reference to the drawings. 1A, 1B and 4 are plan views showing an embodiment of the present invention. Here, FIG. 7A is a plan view before moving the cassette holder, and FIG. 7B is a plan view after moving the cassette holder. The same or equivalent parts corresponding to those in the other figures are designated by the same reference numerals. ◆ In Fig. 1, 17
Is a cassette holder that mounts the cassette 3 on the reel stand and moves in the direction of the rotary cylinder 2 along the guide portion of the chassis 1. Reference numeral 19 is a guide driving member directly connected to the cassette holder 17, and 20-1 is a first gear engaged with the guide driving member 19. Reference numeral 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 21. 20-3 meshes with the loading ring 21, and the loading ring 2
The third gear transmits the rotation of No. 1 to the guide moving arm 22. The loading ring 21 is connected to the entrance-side and exit-side guide bases 7 and 8 and the pull-out roller 9 and functions to move them. Further, the guide moving arm 22 functions to move the exit side guide base 8. Further, 23 is a pinch roller moving arm for moving the pinch roller 14, 24-1 and 24-2 are loading gears for driving the loading ring 21 by the loading motor 16, and 25 is the guide holder after the movement. An urging spring for determining the position of 17. Next, the operation of this embodiment will be described. ◆ Replace the cassette holder 17 with the guide holder biasing spring 2
5 against the force of 5, when manually moved in the direction of the rotary cylinder 2 (direction of arrow C), the cassette holder 1
The guide driving member 19 directly passed through 7 drives the guide driving gears 20-1 and 20-2 in the arrow direction, and drives the loading ring 21 in the arrow D direction. As a result, the inlet side 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 the output side guide base 8 also moves outside the opening of the cassette 3. To be done. Further, the pinch roller moving arm 23 moves along with the guide base moving arm 22, and moves the pinch roller 14 to the outside of the opening of the cassette 3 in the same manner. FIG.
As shown in (A), the toothless portion of the loading ring 21 is located on the gear 24-2, and the driving force is not transmitted between the two. Simultaneously with the movement of the cassette holder 17, the cassette 3 is moved in the direction of the rotary cylinder 2 (direction of arrow C), and the cassette 3 is maximally moved to a position where it does not contact the rotary cylinder 2. by this,
The rotary cylinder 2 is inserted into the opening of the cassette 3 as shown in FIG.
It is stored as shown in (B). At this time, as shown in FIG. 1B, the guide driving gear 20-1 is located at the toothless portion of the guide driving member 19, and the guide driving member 19 is located. The driving of the guide driving gear 20-1 by the above is completed. On the other hand, the gear 24-2 is loaded with the loading ring 2 by the rotation of the loading ring 21.
It is in a state of being engaged with one tooth portion. Then, the driving force of the loading motor 16 is switched to the driving force of the cassette holder 17 to be transmitted, whereby the guide bases 7 and the like on the inlet side and the outlet side are moved to predetermined positions, and the magnetic tape 4 is moved to the rotary cylinder 2. Wind up. Further, the transmission of the driving force of the loading motor 16 can be selectively switched by the toothless portion of the loading ring 21. In the moving mechanism of the embodiment, the loading ring 21 is moved by moving the cassette holder 17.
However, a method of driving the loading ring 21 and the cassette holder 17 by the loading motor 16 or the like can be easily considered. Also,
At this time, the loading ring 21 and the cassette holder 17 may be driven separately. Further, after mounting the cassette in the cassette holder 17, the loading ring 21 is moved to move the guides to the outside of the opening first,
After that, the cassette holder 17 and the cassette 3 may be moved toward the rotary cylinder 2. Next, a method of mounting the cassette 3 will be described with reference to FIGS. 2 is a side view of the recording / reproducing apparatus of this embodiment. In FIGS. 2A to 2C, 18 is a cassette box in which the cassette 3 is mounted. Also,
Other reference numerals indicate the same parts as in FIG. As shown in FIG. 2 (A), the cassette 3 is mounted in the cassette box 18 from the direction of the arrow a in a state where the cassette box 18 is raised. Next, as shown in FIG. 2B, the cassette box 18 in which the cassette 3 is mounted is lowered in the direction of arrow b and held in the cassette holder 17. At this time, a front cover 3-1 for protecting the tape of the cassette box 3
Is brought into contact with a member (not shown) for opening the lid to open it. Next, as shown in (C), the cassette holder 17 holding the cassette 3 is moved in the direction of the rotary cylinder 2 (direction of arrow C). As a result, as described above, the guide bases 7 and 8 on the inlet and outlet sides and the pull-out roller 9 stored in the opening of the cassette 3 move while pulling out the tape from the opening, and during loading (half Loading). As a result, a part of the rotary cylinder 2 is stored in the opening of the cassette 3, and the vertical length of the chassis 1 is shortened from L (conventional size) to 1 (el). It FIG. 3 is a plan view of the recording / reproducing apparatus when the cassette 3 is inserted to the position shown in FIG. 1 (B) or FIG. 1 (C). At this time, as shown in the drawing, the guides such as the guide bases 7 and 8 on the inlet side and the outlet side and the pull-out roller 9 are half-loaded, so that there is no obstacle in the opening of the cassette 3. . Further, a part of the rotary cylinder 2 is housed inside the opening of the secut 3, and the length of the chassis 1 in the vertical direction is shorter than L of the conventional example (length dimension 1 (El)). ), It is clear that it will be greatly shortened. According to the present invention, the tape guide means is moved to the outside of the opening of the cassette at an early stage, and the interference between the rotary cylinder and the tape guide means in the opening of the cassette is solved. The occurrence of slack in the tape during the tape loading process can be avoided, a device for storing the rotary cylinder in the opening of the cassette is realized, and the size of the device is reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing an embodiment of a recording / reproducing apparatus of the present invention. FIG. 2 is a side view showing an operation when a cassette is inserted. FIG. 3 is a plan view showing an embodiment of the present invention. FIG. 4 is a schematic view showing an embodiment of the present invention. FIG. 5 is a plan view showing an embodiment of the present invention. [Explanation of Codes] 1 ... Chassis, 2 ... Rotating cylinder, 3 ... Cassette, 4 ... Magnetic tape, 7, 8 ... Guide base, 17 ... Cassette holder, 19 ... Guide drive member, 20 ... Guide drive gear, 21 … Loading ring, 22… Guide moving arm.

   ─────────────────────────────────────────────────── ─── Continued front page    (56) References JP-A-61-284856 (JP, A)               JP-A-1-91356 (JP, A)               JP-A-1-199352 (JP, A)               JP-A-53-26108 (JP, A)               Actual Development Sho 61-163357 (JP, U)

Claims (1)

[Claims] 1. Attach the tape to the main board with the rotating cylinder attached.
A cassette that houses a reel to be wound and has an opening in front of it.
And a reel stand that engages with the reel are placed,
A part of the rotary cylinder overlaps with the main board and the cassette
Substrate that is moved until it is located in the opening
And winding the tape around the outer circumference of the rotary cylinder at a predetermined angle.
The tape guide means that is moved until the tape is attached, and the tape
Tape guide driving means for moving the guide means.
In this recording / reproducing apparatus, the tape guide driving means is configured to rotate the auxiliary substrate.
Until the completion of movement in the cylinder direction, the tape guide
Means from inside the opening of the cassette to the outside thereof.
The auxiliary substrate in the direction of the rotary cylinder.
Before moving the tape guide means after completion of movement
Winding the tape around the rotary cylinder at the predetermined angle
A recording / reproducing device characterized by completing the attachment .