JPH061583B2 - Tape guide guide mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Application of the Invention The present invention is directed to a tape guide guide mechanism in a magnetic recording / reproducing apparatus or the like aiming at ensuring a selection operation of a moving path of a tape guide member and simplifying the structure. It is about.

[Background of the Invention]

A tape guide member for guiding the magnetic tape or a plurality of supporting members for supporting a pinch roller or the like is operated to pull out the magnetic tape from the cassette, and the magnetic tape is wound around a rotary head device at a predetermined angle. In a conventional magnetic recording / reproducing apparatus having a tape mounting device capable of performing the above, as described in JP-A-57-20957, a plurality of supporting members for supporting the respective tape guide members are mounted during the tape mounting. The moving path is shared up to a branch point in the middle of the moving path, and then a separate moving path branched from the branch point is moved to reach a predetermined position to complete the tape mounting. Regarding the guide of each tape guide member, a biasing force is applied to the support member in a predetermined direction and the tape is guided to a moving path in that direction. To have.

The tape guide guide mechanism configured as described above is an effective means for guiding the tape guide member, but a spring for applying an urging force to the support member in order to guide the support member to a predetermined movement path. A biasing member such as is required. Therefore, not only the number of parts is increased, but also a space for accommodating the urging member is required, which hinders downsizing and thinning of the magnetic recording / reproducing apparatus. Further, it is difficult to adjust the urging force, and if the adjustment is not appropriate, there is a problem that a sliding load may increase or the tape guide member may make a wrong movement path.

[Object of the Invention]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art and to provide a tape guide guide mechanism in which the operation of selecting the moving path of the tape guide member is reliable and the structure is simple.

[Outline of Invention]

In order to achieve the above object, the present invention has the following configurations.

That is, in the first invention, in the tape guide guide mechanism configured to guide the movement of the plurality of tape guide means by the guide means, the guide means is continuous to the first guide portion (corresponding to one embodiment reference numeral 41). And has a second guide portion (corresponding to one embodiment reference numeral 42), and is displaced by the tape guide means (corresponding one embodiment reference numeral 24, 16, 14, 15, 35, 27), and the second guide Part (corresponding one embodiment reference numeral 42) to the first tape guide means (corresponding one embodiment reference numeral 24,
16, 14, 15, 35, 27) can enter, and other tape guide means (corresponding to one embodiment reference numeral 22, 11, 9, 1)
0, 37, 26, 28) is provided with a selecting means (corresponding to one embodiment reference numeral 45) that makes entry impossible.

Further, in the second invention, in the tape guide guide mechanism configured to guide the movement of the tape guide means by the guide means, the guide means is continuous with the first guide portion (corresponding to one embodiment reference numeral 41). It has a plurality of second guide portions (corresponding to one embodiment reference numerals 42 and 43) and is displaced by the tape guide means, and the tape guide means is used to operate one of the second guide portions (corresponding to one embodiment. The selection means (corresponding to one embodiment code 45) that allows entry to the first guide part from the example code 42) and disables entry to the other of the second guide parts (corresponding one embodiment code 43). ).

With the above configuration, the tape guide means can be reliably guided to the predetermined moving path (guide portion) with a small driving force.

Example of Invention

 Hereinafter, the present invention will be described with reference to examples.

FIG. 1 is a schematic plan view showing a magnetic recording / reproducing apparatus according to an embodiment of the present invention, FIG. 2 is a plan view of an essential part of a tape guide guide mechanism in FIG. 1, and FIG. 3 is a configuration of FIG. FIG. 4 is a plan view of the main part of the tape guide mechanism in the middle of tape loading after the entry-side first runner has passed the branch point.

The outline of this magnetic recording / reproducing apparatus is as follows. That is, a rotary head device 2 having a magnetic head mounted therein, a cassette 3 containing a magnetic tape 4 therein, and a magnetic tape 4 is pulled out from the cassette 3 by a loading operation and wound around the rotary head device 2 to provide a predetermined tape running path. First tape guide member 24, second
The tape guide members 22 of No. 1 are provided, and the same first guide members are provided up to the branch point 25 where these guide members are provided in the middle of the movement path.
Of the first tape guide member 24 and the second tape guide groove 43 from the first guide groove 41 after the branch point 25 by the second guide groove 42 and the third guide groove 43, respectively. And a tape guide guide mechanism configured to guide the tape guide member 22 to a predetermined loading completion position, the first tape having a fulcrum near the branch point 25. As the guide member 24 is guided from the first guide groove 41 to the second guide groove 42, the guide member 24 rotates about the fulcrum and the second guide groove 42 is rotated.
The first guide groove 41 and the third guide groove 43
And the first tape guide member 24 is guided from the second guide groove 42 to the first guide groove 41, the first tape guide member 24 is rotated around the fulcrum in the direction opposite to the rotation direction, and the third tape guide member 24 is rotated. A branch guide plate 45 capable of closing the guide groove 43 is provided near the branch point 25. In the branch guide plate 45, the first tape guide member 24 has a branch point 25.
An abutment portion that abuts against the tape guide member 24 when passing the vicinity in the direction from the first guide groove 41 toward the second guide groove 42 and is given a turning force around the fulcrum from the tape guide member 24. 45b, when passing in the direction of the first guide groove 41 from the direction of the second guide groove 42, the tape guide member 24 is brought into contact with the tape guide member 24 to generate rotational force in the direction opposite to the rotation direction. Abutting part 45 provided
b.

The details of this magnetic recording / reproducing apparatus will be described below.

Reference numeral 1 is a main chassis of the magnetic recording / reproducing apparatus, 2 is a rotary head device mounted with a magnetic head and rotatably attached to the main chassis 1, and 3 is a cassette also attached to the main chassis 1. A supply-side reel 5 and a winding-side reel 6 around which the magnetic tape 4 is wound are arranged in parallel inside. Reference numeral 7 is a tension pin for detecting the tension of the magnetic tape 4 when it is running, and 8 is a fixed guide erected on the main chassis 1. Reference numeral 9 denotes an entrance-side second tilt guide, 10 is an entrance-side second guide roller, 37 is a rotary pin having a boss portion 37a, 26 is a guide protrusion, and the entrance-side second tilt guide 9 and the entrance-side second guide roller are provided. Numeral 10 is the second entry side with a positioning pin 28 planted at the tip.
The rotation pin 37 and the guide projection 26 are fixed to the upper surface of the rib 11 in a predetermined positional relationship, and fixed to the lower surface of the second entrance-side second rib 11 to form a second tape guide member 22.
Reference numeral 12 is an erasing head for erasing over the entire width of the magnetic tape 4, and 13 is an impedance roller for absorbing longitudinal vibration of the magnetic tape 4. 14 is the entrance-side first tilt guide,
Reference numeral 15 is an entrance-side first guide roller, 35 is a rotary pin having a boss portion 35a, and 27 is a guide protrusion.
The inclined guide 14 and the entrance-side first guide roller 15 are the entrance-side first
The rotation pin 35 and the guide projection 27 are fixed to the upper surface of the rib 16 in a predetermined positional relationship, and are fixed to the lower surface of the entry-side first rib 16 to form the first tape guide member 24.

Reference numeral 17 denotes a delivery side guide roller, and this delivery side guide roller 17 is planted on a delivery side rib 18. Numerals 19 and 20 are capstans and pinch rollers for driving the magnetic tape 4 by pressing it, and numeral 21 is a width regulation guide for regulating the position of the magnetic tape 4 entering the cassette 3. In FIG. 1, the tape guides before starting the tape mounting are shown by broken lines, the reference numerals have a dash, and the tape guides after mounting are shown by solid lines.

Next, the tape guide guide mechanism will be described in more detail with reference to FIG.

Reference numeral 30 denotes a loading ring for driving the tape guide member 24 and the second tape guide member 22, and 31 denotes a plurality of ring holders rotatably supported by the main chassis 1 which rotatably supports the loading ring 30. , 32 are drive gears for driving the loading ring 30 rotatably supported by the main chassis 1. 33
Is a second connecting member connected by the loading ring 30 and the drive pin 38, and the entrance side second rib 11 and the rotation pin 37, and 34 is the loading ring 30 and the drive pin 36, and the entrance side first rib 16. The first connecting member is connected by the rotating pin 35. 40 is a main guide 40a, a branch guide 40b, a sub guide 40
A guide plate which is composed of c and is held by the main chassis 1. The guide plate 40 has a first guide groove for guiding the first tape guide member 24 and the second tape guide member 22 to the branch point 25. 41, a second guide groove 42 that guides the first tape guide member 24 to a predetermined position where the first guide groove 41 is extended, and a second tape guide from the branch point 25 to the ridge positioning member 29. A third guide groove 43 for guiding the member 22 is provided (guide groove 41 to
43 is all shown by a dashed-dotted line). Contact part 4
A branch guide plate 45 having 5a, 45b, a first groove portion 45c, and a second groove portion 45d is rotatably provided with a rotation pin 46 erected near the branch point 25 as a fulcrum. Reference numeral 47 is a position restricting member having a protrusion 47a capable of restricting the stop position of the branch guide plate 45 by engaging with the first groove 45c or the second groove 45d of the branch guide plate 45. The regulation member 47 is installed on the sub guide 40c.

The outline of the loading operation of the magnetic recording / reproducing apparatus configured as described above will be described with reference to FIG.

Before the tape mounting is started, the first tape guide member 24 'and the second tape guide member 22' located at the cassette opening 23 are arranged in a two-dot chain line so as to pull out the magnetic tape 4 at the start of the loading operation. Move in the direction indicated by. At this time, the first tape guide member 24 and the second tape guide member 22 start to move at the same time and move along the same path (that is, the first guide groove 41 in FIG. 2), and the branch point 25. As shown by arrow A, it moves without changing its height position. At branch point 25,
The first tape guide member 24 moves along a path approaching the rotary head device 2 as indicated by an arrow B, and gradually increases its height to reach a predetermined position, so that the magnetic tape 4 is moved to the rotary head device 2. Mount. At this time, the impedance roller 13 located at the position 13 'during the mounting of the tape moves as indicated by an arrow G. Simultaneously with the operation of the first tape guide member 24, the second tape guide member 22 moves at the branch point 25 along the path away from the rotary head device 2 without changing its height as shown by arrow C. Then, when the tape mounting is completed, the tape reaches a predetermined position to form a traveling path on the tape entry side of the rotary head device 2.

On the other hand, the output side rib 18 is the first and second tape guide members 2
4 and 22, the pinch roller 20 and the width regulation guide 21 move in parallel with the arrow E, respectively.
While moving like F, the tape running path on the tape output side of the rotary head device 2 is formed, and the tape mounting is completed.

Here, the tape loading operation on the tape entry side will be described in more detail with reference to FIGS.

In FIG. 2, the drive gear 32 is rotated in the arrow direction by a drive source (not shown), and the loading ring 30 is rotated in the arrow L direction. The first tape guide member 24 is driven by the loading ring 30 via the first connecting member 34, and the second tape guide member 22 is driven by the loading ring 30 via the second connecting member 33. At this time, both the first tape guide member 24 and the second tape guide member 22 slide and move along the first guide groove 41. Then, at the branch point 25, the boss portion 35a of the rotation pin 35 provided on the lower surface of the first tape guide member 24 comes into contact with the right side surface of the contact portion 45b of the branch guide plate 45 and follows the side surface. The first tape guide member 24 is guided in the direction of arrow M and slides along the second guide groove 43. Then, it rises along a predetermined path and is positioned at the final position. The first tape guide member 24
FIG. 3 is a side view of the state when the is near the branch point 25. In FIG.
6 moves along the upper surface of the guide plate 40, and slides while the boss portion 35a protruding downward from the lower surface of the guide plate 40 contacts the branch guide plate 45 (the right side surface of the contact portion 45a). is doing.

Returning to FIG. 2 again, when the first tape guide member 24 passes through the branch point 25 and moves in the direction of the arrow M as described above, the boss portion 35a of the first tape guide member 24 contacts the contact portion 45 of the branch guide plate 45.
By making contact with b, the branch guide plate 45 is moved to the rotation pin 4
It rotates in the direction of arrow N with 6 as the central axis. This allows
The protrusion 47a of the position regulating member 47, which has been engaged with the second groove portion 45d of the branch guide plate 45 until then, moves in the direction of arrow P to unlock. And the first tape guide member 2
When 4 separates from the contact portion 45b of the branch guide plate 45, the protrusion 47a of the position regulating member 47 engages with the first groove 45c, and the branch guide plate 45 is fixed at that position. The state at this time is shown in FIG.

The movement operation of the second tape guide member 22 will be described with reference to FIG. As described above, when the first tape guide member 24 passes through the branch point 25 and separates from the contact portion 45b of the branch guide plate 45, the contact portion 45a of the branch guide plate 45 has the main guide 40a side, That is, it moves to the rotary head device 2 side and closes the second guide groove 42. As the loading ring 30 further rotates in the L direction, the second tape guide member 22 also moves, and the guide protrusion 26 provided on the lower surface of the second entrance side rib 11 contacts the contact portion 45a of the branch guide plate 45. Abutting the left side surface of the guide, is guided in the direction of the arrow M ', and slides along the third guide groove 43. And
Positioning pin 2 erected at the tip of the entry-side second rib 11
8 engages with the ridge positioning member 29 to complete the tape loading operation on the tape entry side.

Although the tape mounting operation has been described above, when the tape mounting is released, the operation is the reverse of the tape mounting operation. That is, in FIG. 4, the loading ring 3
0 rotates in the direction opposite to the arrow L, the second tape guide member 22 moves in the direction opposite to the arrow M ′, and passes the branch point 25. At this time, since the branch guide plate 45 is open to the third guide groove 43 side at the branch point 25, the second tape guide member 22 passes through a path that does not come into contact with the first tape guide member 22.
Return to the guide groove 41 of. Next, the first tape guide member 2
4 moves in the second guide groove 42 in the direction opposite to the arrow M direction. At this time, the boss portion 35a comes into contact with the abutting portion 45a of the branch guide plate 45, and the branch guide plate 45 rotates about the rotation pin 46 in the direction of the arrow N ', and the position as shown in FIG. Then, the branch guide plate 45 stops. After that, the first and second tape guide members 24 and 22 move along the first guide groove 41, and each of them moves inside the cassette opening 23 of FIG. 1 described above.
The tape dismounting is completed.

According to the embodiment described above, unlike the conventional tape guide guide mechanism, it is not necessary to use a biasing member made of an elastic material such as a spring for biasing the tape guides in a predetermined guiding direction. Is simple and the adjustment at the branch point 25 can be easily performed, and the first and second tape guide members 24, 2 are provided at the branch point 25 during the tape mounting.
Since each of the tape guides 2 can be surely regulated in one predetermined direction, there is an effect that each tape guide member is reliably guided along the predetermined path and the tape mounting is performed without mistaking the path.

In addition, at the branch point 25, the branch angle from the first guide groove 41, which is the main path, to the sub path that branches is freely changed only by changing the shape of the branch guide plate 45, which is the movable member for branch guide. Therefore, it is possible to freely select the position of the branch point 25 in the tape mounting path at the time of designing. Therefore, the moving path of the tape guides of the tape guide guide mechanism can be easily designed, and the degree of freedom of the shape of the member itself that supports the tape guides is large and the size can be made small. On the other hand, in the structure in which the magnetic tape is mounted up to the side opposite to the cassette, there is an advantage that the plane area of the tape guide mechanism can be reduced.

Further, in this embodiment, the branch guide plate 45 is provided on the lower side of the guide plate 40, but the same effect can be obtained by providing it on the upper side of the guide plate 40. In this way, the space below the guide plate 40 can be further reduced, and therefore the device can be made thinner.

Furthermore, in the present embodiment, the mounting system in which the tape guide members 24 and 22 are lifted only on the tape entry side of the rotary head device 2 has been described as an example. It is clear that the present invention can be applied to other mounting type devices such as the tape guide members moving in parallel on the output side.

〔The invention's effect〕

As described above, according to the present invention, it is possible to provide a tape guide guide mechanism in which the operation of selecting the moving path of the tape guide member is reliable and the structure is simple.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing a magnetic recording / reproducing apparatus according to an embodiment of the present invention, FIG. 2 is a plan view of an essential part of a tape guide guide mechanism in FIG. 1, and FIG. 3 is a configuration of FIG. FIG. 4 is a plan view of the main part of the tape guide mechanism showing the intermediate state of the tape mounting after the entrance-side first runner has passed the branch point. [Explanation of reference symbols] 2 ... rotary head device, 3 ... cassette, 4 ... magnetic tape, 24 ... first tape guide member, 22 ... second tape guide member, 25 ... branch point, 41 ...... First guide groove, 42 ...... Second guide groove, 43 ...... Third guide groove, 45 …… Branch guide plate, 45a, 45b …… Abutting part.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 59-87648 (JP, A) JP 59-207053 (JP, A) JP 59-210559 (JP, A) JP 57- 20958 (JP, A)

Claims (2)

[Claims] 1. A tape guide guide mechanism configured to guide the movement of a plurality of tape guide means by a guide means,
The guide means has a second guide portion that is continuous with the first guide portion, and is displaced by the tape guide means, and the second guide portion is provided.
The tape guide guide mechanism is provided with a selecting means that allows the first tape guide means to enter and the other tape guide means to enter the guide part. 2. A tape guide guide mechanism configured to guide the movement of the tape guide means by the guide means, wherein the guide means has a plurality of second guide portions continuous with the first guide portion, Displaced by the tape guide means, the tape guide means can be used to enter the first guide portion from one of the second guide portions, and the other of the second guide portions can be entered. A tape guide guide mechanism comprising a selection means for making it impossible.