JPH06295510A - Guiding mechanism for tape guide - Google Patents

Abstract

PURPOSE:To assure the section action of the moving routes of tape guide members by providing the moving routes with slit guiding parts and providing tape guide means with plural parts which are to be guided and are respectively engaged longitudinally with the guiding parts. CONSTITUTION:The first tape guide member 24 is driven via a first connecting member 34 and the second tape guide member 22 via a second connecting member 33, respectively by loading 30. The tape guide member 24 and the second tape guide member 22 are both slid and moved along the first guiding groove 41. A boss part 35a of a rotating pin 35 formed on the rear surface of the first tape guide member 24 comes into contact with the right side flank of the contact part 45a of a branch guide plate 45 at a branch point 25 and the first tape guide member 24 is guided in an arrow M direction and is slid and moved along the second guiding groove 42. The tape guide member is risen along the prescribed route and is positioned in the final position.

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 a predetermined position. Although the tape mounting is completed at this point, with respect to the guide of each tape guide member at the branch point, a biasing force is applied to the support member in a predetermined direction, and the tape guide member is guided to a movement path in that direction. ing.

[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 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 which solves the above-mentioned problems of the prior art and ensures a selection operation of a moving path of a tape guide member and has 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 moving the plurality of tape guide means along the movement path, the movement path has a slit-shaped guide portion (corresponding to one embodiment reference numeral 41, 42, 43), and the tape guide means respectively. However, a plurality of guided portions (corresponding to one embodiment reference numeral 3) engaged with the guide portion in the longitudinal direction.
5a, 27, 26, 37a), and the tape guide means that moves in advance (corresponding to one embodiment reference numeral 24, 16, 14, 1)
5, 35, 27), a moving force is applied to the guided portion (corresponding to one embodiment reference numeral 35a) on the front side with respect to the moving direction of the tape mounting by external driving means (corresponding to one embodiment reference numeral 30), and In the following tape guide means (corresponding to one embodiment reference numeral 22, 11, 9, 10, 37, 26, 28), the guided portion (corresponding to one embodiment reference numeral 37a) on the rear side with respect to the moving direction of the tape mount. It is configured to give movement power to.

[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 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 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. A first tape guide member 24 and a second tape guide member 22 capable of forming the same, and the same first guide groove 41 up to a branch point 25 where these guide members are provided in the middle of the movement path. Guided by the branch point 2
From 5 onward, the second guide groove 42 and the third guide groove 43 branched from the first guide groove 41 guide the first tape guide member 24 and the second tape guide member 22, 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 first tape guide member 2 is rotated around the fulcrum to close the second guide groove 42 and allows the first guide groove 41 and the third guide groove 43 to communicate with each other.
As 4 is guided from the second guide groove 42 to the first guide groove 41, the third guide groove 43 can be closed by rotating around the fulcrum in a direction opposite to the rotation direction. A guide plate 45 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.
Direction, the tape guide member 24 comes into contact with the tape guide member 2 when passing in the direction of the second guide groove 42.
A contact portion 45 to which a turning force around the fulcrum is given from 4
b, when passing from the direction of the second guide groove 42 toward the direction of the first guide groove 41, it abuts against the tape guide member 24 and applies rotational force from the tape guide member 24 in the direction opposite to the rotation direction. The contact portion 45a is provided.

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. 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 is a second entrance side inclined guide, and 10 is a second entrance side inclination guide.
A guide roller, 37 is a rotary pin having a boss portion 37a, 26 is a guide projection, and the entrance-side second inclined guide 9 and the entrance-side second guide roller 10 have an insertion pin 28 at the tip thereof. The upper side of the second side ridge 11 is planted in a predetermined positional relationship, and the rotation pin 37 and the guide protrusion 26 are fixed to the lower side of the second side ridge 11 on the inlet side to form the second tape guide member 22. ing.

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
Are planted 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 provided on the entrance-side first rib 1.
It is fixed to the lower surface of 6 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. 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 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. The ring holder 32 is a drive gear that is rotatably supported by the main chassis 1 and drives the loading ring 30. Reference numeral 33 is a second connecting member connected by a loading ring 30 and a drive pin 38, and a second connecting side ridge 11 and a rotating pin 37.
Reference numeral 4 denotes a first connecting member that is connected by a loading ring 30 and a drive pin 36, and an input side first ridge 16 and a rotary pin 35.

Reference numeral 40 denotes a main chassis 1 including 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 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 and move on 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 '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 changes its height at a branch point 25 along a path away from the rotary head device 2 as shown by an arrow C. Move without
The rotary head device 2 reaches a predetermined position when the tape mounting is completed.
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 the arrow D, and the pinch roller 20 and the width regulation guide 21 respectively show the arrows E and E. 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 boss portion 35a of the rotary pin 35 provided on the lower surface of the first tape guide member 24 abuts on the right side surface of the abutting portion 45a of the branch guide plate 45, and this side surface. The first tape guide member 24 is guided in the direction of arrow M and slides along the second 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, and in FIG. 3, the first entrance side rib 16 is the guide plate 4.
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 slides while contacting (the right side surface of the contact portion 45a of) the branch guide plate 45.

Returning to FIG. 2 again, when the first tape guide member 24 passes through the branch point 25 and moves in the direction of arrow M as described above, the boss portion 35a of the boss portion 35a contacts 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 until then, is indicated by the arrow P.
Move in the direction to unlock. 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 is moved to the first groove portion 45.
It engages with c and the branch guide plate 45 is fixed in this 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 branch guide plate 4
The abutting portion 45a of No. 5 moves to the main guide 40a side, that is, 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 rib 11 abuts on the left side surface of the abutting portion 45a of the branch guide plate 45 to make an arrow M '.
And is slidably moved 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 to complete the tape loading operation on the tape entrance 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 30 is indicated by 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 opened to the side of the third guide groove 43 at the branch point 25, the second tape guide member 22 passes through a path that has no contact with the first guide groove. Return to 41. 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 comes into contact with the contact portion 45a of the branch guide plate 45, and the branch guide plate 45 rotates in the direction of the arrow N'about the rotation pin 46, and at the position shown in FIG. 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, reach the inside of the cassette opening 23 of FIG. 1 described above, and the tape mounting / dismounting ends.

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 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 4
5 is provided on the lower side of the guide plate 40.
Even if it is provided above 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.

[0028]

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 III direction 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.

Claims (1)

[Claims] 1. A tape guide guide mechanism for moving a plurality of tape guide means along a movement path, wherein the movement path has a slit-shaped guide portion, and each of the tape guide means has a longitudinal direction with respect to the guide portion. In the tape guide means which has a plurality of guided parts to be engaged and which moves in advance, a moving force is applied to the guided part on the front side with respect to the moving direction of the tape mounting device by an external driving means, and the tape moves further. A tape guide guide mechanism characterized in that the tape guide means is configured such that a moving force is applied to a guided portion on the rear side with respect to the moving direction of the tape mount.