JPH0792962B2 - 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 for guiding a magnetic tape or a pinch roller are operated to pull out the magnetic tape from the cassette,
A conventional magnetic recording / reproducing apparatus having a tape mounting device capable of winding this magnetic tape around a rotary head device at a predetermined angle is disclosed in Japanese Patent Laid-Open No. 20957/1982. A plurality of support members that support each tape guide member during mounting share a movement path to a branch point in the middle of the movement path, and then move a separate movement path branched from the branch point to reach a predetermined position. Although the tape mounting is completed, with respect to the guide of each tape guide member at the branch point, it is configured to apply a biasing force to the support member in a predetermined direction and guide it to a movement path in that direction. .

[0003]

Although the tape guide guide mechanism constructed as described above is an effective means for guiding the tape guide member, the tape guide guide mechanism is used to guide the support member to a predetermined moving path. A biasing member such as a spring is required to apply a biasing force. Therefore, not only the number of parts increases 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 which solves the above-mentioned problems of the prior art and has a reliable operation for selecting a movement path of a tape guide member and a simple structure.

[0004]

In order to achieve the above object, the present invention has the following configuration. That is, in the tape guide guide mechanism for selecting the movement path of the tape guide means by the selection means, the movement path is divided into a plurality of second movement paths from the first movement path (corresponding to one embodiment reference numeral 41) (corresponding to one implementation). The selection means (corresponding to one embodiment reference numeral 45) is rotated around a fulcrum (corresponding to one embodiment reference numeral 46) and is substantially in the movement path direction on both sides of the fulcrum. To the first portion (corresponding to one embodiment reference numeral 45b) and the second portion (corresponding to one embodiment reference numeral 45).
a), the first portion has a force point portion that abuts when the tape guide means moves in the second movement path, and the second portion always projects into the movement path. In the tape guide means, the preceding member (corresponding to one embodiment reference numeral 24, 16, 14, 15, 35, 2) is formed.
7) pushes the force point portion in the second movement path to rotationally displace the selecting means around the fulcrum, so that the following member of the tape guide means (corresponding to one embodiment reference numeral 2
2, 11, 9, 10, 37, 26, 28) is configured to control the approach route from the first movement route to the second movement route.

[0005]

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 part of a tape guide guide mechanism in FIG. 1, and FIG. FIG. 4 is a plan view of a main part of the tape guide mechanism in the state where the tape is being mounted after the first entry side runner has passed the branch point.

The outline of this magnetic recording / reproducing apparatus is as follows. That is, the first tape guide member 2 capable of forming a predetermined tape running path by pulling out the magnetic tape 4 from the cassette 3 by the loading operation and winding the magnetic tape 4 around the magnetic head 4 mounted on the rotary head device 2.
4, the second tape guide member 22 is provided, and these guide members are guided by the same first guide groove 41 up to a branch point 25 provided in the middle of the movement path.
After that, the first tape guide member 24 and the second tape guide member 22 are guided by the second guide groove 42 and the third guide groove 43 branched from the first guide groove 41, respectively, and the predetermined loading is performed. A magnetic recording / reproducing apparatus having a tape guide guide mechanism configured to guide to a completion position, wherein a fulcrum is provided in the vicinity of the branch point 25, and the first tape guide member 24 extends from the first guide groove 41 to the first guide groove 41. 2 guide groove 42
The second guide groove 42 is rotated around the fulcrum as it is guided to the second guide groove 42, and the first guide groove 41 and the third guide groove 43 are communicated with each other.
A branch guide plate capable of closing the third guide groove 43 by rotating around the fulcrum in a direction opposite to the rotating direction as the guide is guided from the second guide groove 42 to the first guide groove 41. Four
5 is provided near the branch point 25.

In the branch guide plate 45, the first tape guide member 24 is located near the branch point 25 in the first guide groove 41.
The tape guide member 24 when passing in the direction of the second guide groove 42 from the above direction.
From the abutment portion 45b which is given a turning force around the fulcrum from
When passing from the direction of the second guide groove 42 toward the direction of the first guide groove 41, the tape guide member 24 comes into contact with the tape guide member 24 and a rotational force in the direction opposite to the rotation direction is given from the tape guide member 24. It has a contact portion 45a.

The details of the 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. 7 is a magnetic tape 4
A tension pin 8 for detecting the tension when the vehicle runs, and a fixed guide 8 erected on the main chassis 1.

Reference numeral 9 is a second entrance side inclined guide, and 10 is a second entrance side inclination guide.
Guide rollers, 37 is a rotation pin having a boss 37a,
Reference numeral 26 is a guide protrusion, and the entrance-side second inclined guide 9 and the entrance-side second guide roller 10 have a positioning pin 28 at the tip.
Are planted in a predetermined positional relationship on the upper surface of the entrance-side second rib 11 on which the rotary pin 37 and the guide projection 26 are fixed to the bottom surface of the entrance-side second rib 11 to form the second tape. The guide member 22 is configured. 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, and 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 15 are planted on the upper surface of the entrance-side first rib 16 in a predetermined positional relationship. The rotation pin 35 and the guide protrusion 27 are the first
The first tape guide member 2 fixed to the lower surface of the rib 16
Make up 4.

Reference numeral 17 denotes a delivery side guide roller, and this delivery side guide roller 17 is planted on a delivery side rib 18. 1
Reference numerals 9 and 20 denote capstans and pinch rollers for driving the magnetic tape 4 by pressing it, and reference numeral 21 denotes a width regulation guide for regulating the position of the magnetic tape 4 entering the cassette 3.
In FIG. 1, each tape guide before starting the tape mounting is shown by a broken line, a reference numeral is attached with a dash, and after tape mounting is shown by a solid line.

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 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. The ring holder 32 is a drive gear rotatably supported by the main chassis 1 that drives the loading ring 30. Reference numeral 33 is a second connecting member connected by the loading ring 30 and the drive pin 38, and the second inlet side rib 11 and the rotating pin 37, respectively.
Is a first connecting member that is connected by the loading ring 30 and the drive pin 36, and by the inlet-side first rib 16 and the rotating pin 35, respectively.

Reference numeral 40 comprises a main guide 40a, a branch guide 40b, and a sub guide 40c.
A first guide groove 41 for guiding the first tape guide member 24 and the second tape guide member 22 to the branch point 25,
A second guide groove 42 that guides the first tape guide member 24 to a predetermined position extending from the first guide groove 41, and a second tape guide member 22 from the branch point 25 to the ridge positioning member 29. The third guide groove 43 is provided (all of the guide grooves 41 to 43 are shown by a one-dot chain line).

The contact portions 45a, 45b, the first groove portion 45c,
The branch guide plate 45 having the second groove portion 45d is provided so as to be rotatable about a rotation pin 46 that is erected near the branch point 25 as a fulcrum. 47 is the first groove portion 4 of the branch guide plate 45.
5c or the second groove 45d to engage with the branch guide plate 4
5 is a position regulating member having a protrusion 47a capable of regulating the stop position of No. 5, and this position regulating member 47 is installed on the sub guide 40c.

An 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 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 moving at the same time, and the same path (that is,
It moves along the first guide groove 41) in FIG. 2 and moves to the branch point 25 without changing its height position as indicated by arrow A.

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 to reach the magnetic position. The 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 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 delivery side rib 18 moves in parallel with the movement of the first and second tape guide members 24 and 22 as shown by the arrow D, and the pinch roller 20 and the width regulation guide 21 respectively show the arrow E and. 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 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 direction of the arrow by a drive source (not shown), and the loading ring 30 turns in the direction of the arrow L. 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 the second tape guide member 2
Both 2 slide and move along the first guide groove 41. Then, at the branch point 25, the first tape guide member 2
Boss portion 35a of the rotating pin 35 provided on the lower surface of No. 4
Comes into contact with 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 arrow M and along the second guide groove 42. Move by sliding.

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. FIG.
Moves along the upper surface of the guide plate 40,
The boss portion 35a protruding downward from the lower surface of 0 contacts the branch guide plate 45 (the right side surface of the contact portion 45a) and slides.

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. When the first tape guide member 24 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.

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. It comes into contact with the left side surface of the and is guided in the direction of the arrow M ′ and slides along the third guide groove 43. Then, the positioning pin 28, which is erected at the tip of the second entrance-side ridge 11, engages with the ridge-positioning member 29, and the tape loading operation on the tape entrance 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 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 the branch point 2 is reached.
Pass 5. At this time, since the branch guide plate 45 is open to the side of the third guide groove 43 at the branch point 25, the second tape guide member 22 returns to the first guide groove 41 through a path that has no contact. Next, the first tape guide member 24 moves in the second guide groove 42 in the direction opposite to the arrow M direction.

At this time, the boss portion 35a is connected to the branch guide plate 45.
Of the rotating guide pin 45 by contacting the contact portion 45a of the
It rotates in the direction of the arrow N ′ around 6 and the branch guide plate 45 stops at the position shown in FIG. After that, the first guide groove 4
Along with the first and second tape guide members 24, 22
Move in the cassette opening 2 of FIG.
At 3, 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. , Simple configuration and branch point 2
5 can be easily adjusted, and the first and second tape guide members 24 and 22 can be surely regulated in a predetermined direction at the branch point 25 in the middle of mounting the tape. There is an effect that the tape mounting is surely performed along the predetermined route without mistake.

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 freely changed by changing the shape of the branch guide plate 45, which is a movable member for branch guide. Since it can be changed, the position of the branch point 25 in the tape mounting path can be freely selected at the time of design. Therefore, the movement path of the tape guides of the tape guide guide mechanism can be easily designed, and
Since the degree of freedom of the shape of the member itself that supports the tape guides is large and the tape guides can be made small in size, the tape guide is used particularly in the structure in which the magnetic tape is mounted up to the side opposite to the cassette with respect to the rotary head device. There is an advantage that the plane area of the 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 of 0, 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 2 is provided only on the tape entry side of the rotary head device 2.
Although a mounting system having a configuration in which 4, 22 are raised has been described as an example, another mounting system such that each tape guide member moves in parallel on the tape input side and the tape output side of the rotary head device 2. It is obvious that the present invention can be applied to the above device.

[0026]

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

Claims (1)

[Claims] 1. A tape guide guide mechanism for selecting a moving path of a tape guide means by a selecting means, wherein the moving path has a configuration in which a plurality of second moving paths are branched from a first moving path, and the selection is made. The means includes a first portion and a second portion that rotate around a fulcrum and extend substantially in the movement path direction on both sides of the fulcrum, the first portion being the tape guide means and the second portion. It has a force point that abuts when moving in the movement path, and the second portion always has a configuration protruding into the movement path, and the preceding member of the tape guide means is in the second movement path. By pushing the force point to rotatably displace the selecting means around the fulcrum, the entrance path of the succeeding member of the tape guide means from the first moving path to the second moving path is controlled. Tape characterized by Guide guidance mechanism.