JPH0831231B2 - Tape guide guide mechanism - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure aiming at ensuring a selection operation of a moving path of a tape guide member of a tape guide guide mechanism in a magnetic recording / reproducing apparatus and simplifying the structure.

[0002]

2. Description of the Related Art A plurality of support members for supporting a tape guide member or a pinch roller for guiding a magnetic tape are operated to pull out the magnetic tape from a cassette, and the magnetic tape is predetermined for a rotary head device. A conventional magnetic recording / reproducing apparatus having a tape mounting device capable of being wound over a certain angle is disclosed in JP-A-57-2095.
During tape mounting as described in Japanese Patent Publication No. 7, a plurality of support members for supporting each tape guide member are
Sharing a moving route to a branch point in the middle of the moving route, and then moving a separate moving route branched from the branch point,
Although the tape mounting is completed at a predetermined position, for guiding each tape guide member at the branch point, a biasing force is applied to the support member in a predetermined direction, and the tape is moved to a movement path in that direction. It is configured to guide.

[0003]

The tape guide guide mechanism constructed as described above is an effective means for guiding the tape guide member, but in order to guide the support member to a predetermined moving path, the support is provided. A biasing member such as a spring is required to apply a biasing force to the member.

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, there is a problem to be solved that it is difficult to adjust the urging force, and if the adjustment is not proper, the sliding load may increase or the tape guide member may make a wrong movement path. SUMMARY OF THE INVENTION It is an object of the present invention to provide a tape guide guide mechanism that solves the above-mentioned problems of the prior art and that ensures the operation of selecting the movement path of the tape guide member and has a simple structure.

[0005]

In order to achieve the above object, the present invention has the following configuration. That is, a first tape guide member that moves ahead of the moving path and a second tape guide member that moves rearward are provided, and the first tape guide member moves in the moving path of the second tape guide member. To select.

[0006]

EXAMPLES The present invention will be described below with reference to examples. 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 a main portion of a tape guide guide mechanism in FIG. 1, and FIG. View,
FIG. 4 is a plan view of the main parts of the tape guide mechanism in the tape loading state after the entry-side first rung 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 thereon, 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 so that a predetermined tape running is performed. A first tape guide member 24 and a second tape guide member 22 capable of forming a path are provided, and the same first guide groove is provided up to a branch point 25 at which these guide members are provided in the middle of the moving path. 41 and the second guide groove 42 and the third guide groove 43 branched from the first guide groove 41 after the branch point 25, respectively, the first tape guide member 24 and the second tape. A magnetic recording / reproducing apparatus having a tape guide guide mechanism configured to guide the guide member 22 and guide the guide member 22 to a predetermined loading completion position. A fulcrum is provided in the vicinity, and as the first tape guide member 24 is guided from the first guide groove 41 to the second guide groove 42, the first tape guide member 24 is rotated around the fulcrum to move to the second guide groove 42. And the first guide groove 41 and the third guide groove 43 are communicated with each other, and the first tape guide member 24 moves from the second guide groove 42 to the first guide groove 4
1, a branch guide plate 45 is provided in the vicinity of the branch point 25, which can be rotated around the fulcrum in the direction opposite to the rotation direction to close the third guide groove 43. is there.

In the branch guide plate 45, the first tape guide member 24 near the branch point 25, the first guide groove 4
The contact portion 4 contacts the tape guide member 24 when passing in the direction from the one direction to the second guide groove 42, and is given a turning force around the fulcrum from the tape guide member 24.
5b contacts the tape guide member 24 when passing from the direction of the second guide groove 42 toward the direction of the first guide groove 41, and applies a turning force from the tape guide member 24 in a direction opposite to the rotation direction. The contact portion 45a is provided.

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 when the magnetic tape 4 is running, and reference numeral 8 is a fixed guide erected on the main chassis 1. 9 is the entrance-side second tilt guide,
Reference numeral 10 is a second guide roller on the inlet side, 37 is a rotary pin having a boss portion 37a, 26 is a guide protrusion, and the second guide roller on the inlet side is provided.
The inclined guide 9 and the entry-side second guide roller 10 are planted in a predetermined positional relationship on the upper surface of the entry-side second rib 11 having a positioning pin 28 planted at the tip thereof, and the rotation pin 37 and the guide protrusion 26 are A second tape guide member 22 is formed by being fixed to the lower surface of the entry-side second rib 11.

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. Reference numeral 14 is an entrance-side first inclined guide, 15 is an entrance-side first guide roller, 35 is a rotary pin having a boss portion 35a, 27 is a guide protrusion, and the entrance-side first inclined guide 14 and the entrance-side first guide roller are shown. 15
Is erected on the upper surface of the entrance-side first rib 16 in a predetermined positional relationship, and the rotary pin 35 and the guide protrusion 27 are fixed to the bottom surface of the entrance-side first rib 16 to fix the first tape guide member 24. Are configured.

Reference numeral 17 denotes a delivery side guide roller, and this delivery side guide roller 17 is erected 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, reference numerals are attached with dashes, and those after the tape mounting are shown by solid lines.

Next, the tape guide guide mechanism is shown in FIG.
Will be used to explain in more detail. Reference numeral 30 denotes a loading ring for driving the first tape guide member 24 and the second tape guide member 22, and 31 denotes a plurality of rotatably supported main chassis 1, which rotatably supports the loading ring 30. Each ring holder 32 is a drive gear that drives the loading ring 30 and is rotatably supported by the main chassis 1.

Reference numeral 33 is a loading ring 30 and a driving pin 38, and a second entry side rib 11 and a rotating pin 37.
The second connecting members 34 connected to each other are the first connecting members connected to each other by the loading ring 30 and the drive pin 36, and by the first entrance side rib 16 and the rotating pin 35. 40 is a main guide 40a and a branch guide 40
b, a guide plate that is held by the main chassis 1 and includes a sub guide 40c.
Tape guide member 24 and second tape guide member 2
A first guide groove 41 that guides 2 to the branch point 25, a second guide groove 42 that guides the first tape guide member 24 to a predetermined position that is an extension of the first guide groove 41, and a branch point 25. A third guide groove 43 that guides the second tape guide member 22 from the to the ridge positioning member 29 is provided (all of the guide grooves 41 to 43 are shown by a dashed line).

The contact portions 45a, 45b, the first groove portion 45c,
The branch guide plate 45 having the second groove portion 45d has the branch point 25.
It is rotatably provided with a turning pin 46 planted in the vicinity 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.

An outline of the loading operation of the magnetic recording / reproducing apparatus having the above structure 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 indicated by chain double-dashed lines so that the magnetic tape 4 can be pulled out at the start of the loading operation. Move in the direction shown. At this time, the first tape guide member 24 and the second tape guide member 22 start to move at the same time, move along the same path (that is, the first guide groove 41 in FIG. 2), and branch point 25. As shown by arrow A, it moves without changing its height position.

At the branch point 25, the first tape guide member 24 moves along a path approaching the rotary head device 2 as shown by an arrow B, and gradually increases its height to reach a predetermined position. The magnetic tape 4 is mounted on the rotary head device 2. At this time, the impedance roller 13 located at the position 13 'moves in the direction of arrow G during the tape mounting. Simultaneously with the operation of the first tape guide member 24, the height of the second tape guide member 22 is changed along the path away from the rotary head device 2 as shown by the arrow C at the branch point 25. Without moving, reaching a predetermined position at the end of tape mounting, the rotary head device 2
To form a running path on the tape entry side.

On the other hand, the delivery side rib 18 moves in parallel with the movement of the first and second tape guide members 24 and 22 as shown by an arrow D, and the pinch roller 20 and the width regulating guide 21 respectively show an arrow E. , F, and forms a tape running path on the tape output side of the rotary head device 2 to complete the tape mounting. Here, the tape mounting operation on the tape entry side will be described in more detail with reference to FIGS.

In FIG. 2, the drive gear 32 rotates in the arrow direction by a drive source (not shown), and the loading ring 30 turns 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, the first
Tape guide member 24 and second tape guide member 22
Both slide and move along the first guide groove 41.

Then, at the branch point 25, the rotary pin 35 provided on the lower surface of the first tape guide member 24.
The boss portion 35a of the contact portion contacts the right side surface of the contact portion 45a of the branch guide plate 45 and slides along this side surface, and the first tape guide member 24 is guided in the direction of the arrow M, and It slides along the guide groove 42. Then, it rises along a predetermined path and is positioned at the final position.

FIG. 3 is a side view of the state in which the first tape guide member 24 is in the vicinity of the branch point 25. In FIG. 3, the entry side first rib 16 is a guide plate 40. The boss portion 35a that moves along the upper surface of the guide plate 40 and projects downward from the lower surface of the guide plate 40 has the branch guide plate 45.
It is slidingly moved while making contact with (the right side surface of the contact portion 45a).

Returning to FIG. 2 again, as described above, when the first tape guide member 24 passes through the branch point 25 and moves in the direction of the arrow M, its boss portion 35a has a contact portion 45b of the branch guide plate 45. The branch guide plate 45 is rotated in the direction of arrow N about the rotation pin 46 as a central axis by abutting against. As a result, 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, moves in the direction of arrow P to unlock. Then, when the first tape guide member 24 is separated from the contact portion 45b of the branch guide plate 45, the protrusion 47a of the position regulating member 47 becomes the first groove portion 45c.
And the branch guide plate 45 is fixed in this position. The state at this time is shown in FIG.

According to FIG. 4, the second tape guide member 2
2 will be described. As described above, the first tape guide member 24 passes through the branch point 25 and the branch guide plate 4
5 when it is separated from the contact portion 45b of the branch guide plate 45
The abutting portion 45a moves to the main guide 40a side, that is, the rotary head device 2 side to close 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.

Then, the positioning pin 28 erected at the tip of the second entrance side ridge 11 is engaged with the ridge positioning member 29, and the tape loading operation on the tape side is completed. 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 30 is indicated by an 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 2
2 is a first guide groove 4 that passes through a path that has nothing to contact
Return to 1.

Next, the first tape guide member 24 is moved to the second
The guide groove 42 is moved in the direction opposite to the arrow M direction. At this time, the boss portion 35a comes into contact with the contact 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 at the position shown in FIG. The branch guide plate 45 stops. After that, the first along the first guide groove 41
Then, the second tape guide members 24 and 22 move, and each reaches the inside 23 of the cassette opening shown in FIG. 1 to complete the tape mounting / dismounting.

According to the embodiment described above, unlike the conventional tape guide guide mechanism, it is not necessary to use an elastic member such as a spring for urging the tape guides in a predetermined guide direction. Therefore, the configuration is simple and the adjustment at the branch point 25 can be easily performed, and the first and second tape guide members 24 and 22 can be reliably regulated in a predetermined direction at the branch point 25 during the tape mounting. Therefore, there is an effect that each tape guide member is surely guided along a predetermined path without making a mistake in the path and the tape mounting is performed.

Also, at the branch point 25, the branch angle from the first guide groove 41, which is the main passage, to the sub passage that branches is free by simply changing the shape of the branch guide plate 45, which is a movable member for branch guide. The position of the branch point 25 in the tape mounting path can be freely selected at the time of designing. Therefore, the movement 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 supporting the tape guides is large and the tape guides can be downsized. 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 guide mechanism can be reduced.

Further, in this embodiment, the branch guide plate 4
5 is provided on the lower side of the guide plate 40.
Even if it is provided on the upper side, the same effect can be obtained. In this way, the space below the guide plate 40 can be further reduced, and the device can be made thinner.

Furthermore, in this embodiment, each tape guide member 24 is provided only on the tape entry side of the rotary head device 2.
Although the description has been given by taking as an example the mounting system having the configuration in which 22 is raised, in other mounting system devices such as the tape guide members of the rotary head device 2 moving in parallel on the tape input side and tape output side. It is obvious that the present invention can also be applied to.

[0030]

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 which has a simple structure.

[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 a main part of the tape guide guide mechanism in FIG.

FIG. 3 is a view from the direction III in FIG.

FIG. 4 is a plan view of a main part of a tape guide guide mechanism, showing an intermediate state of tape mounting after the first entrance-side ridge has passed through a branch point.

[Explanation of 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 ... Contact portion.

Continuation of front page (56) Reference JP-A-59-210559 (JP, A) JP-A-55-108957 (JP, A) JP-A-59-185063 (JP, A) JP-A-57-20957 (JP , A)

Claims (1)

[Claims] 1. A second tape guide member and the succeeding moving the first tape guide member preceding moving a movement path
And selecting means for selecting the movement path of the tape guide members, the first tape guide member the election in its movement
A tape guide guide mechanism, characterized in that the selection means is driven to select the movement path of the second tape guide member.