JPH04181544A - Recording or playback device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is directed to a magnetic recording medium that can reliably load a tape in a limited space in response to the reduction in the diameter of the rotating drum of video tape recorders, so-called VTRs. The present invention relates to a recording/reproducing device.

[Conventional technology]

Parallel loading, so-called M loading, which is an example of tape loading in a conventional VTR, will be explained with reference to FIG.

In Fig. 8, 1 is the device main body, 2 is the guide groove 2a, 2b.
3A and 3B are opposing guide rollers 3a, respectively.

3b (hereinafter referred to as a drawer member)
It is. Further, 4 is a rotating drum, 5 is a tape cassette, and 6 is a tape for recording and reproducing information.

The operation will be explained based on the above configuration.

First, when a tape cassette (hereinafter referred to as a cassette) 5 is loaded into the main body 1 of the apparatus, the kite rollers 3a and 3b of the pull-out members 3A and 3B are inserted between the tape 6 and the cassette 5, as shown in FIG. 8(a). A cassette 5 is set in the main body 1 of the apparatus so as to be interposed therebetween. Next, by recording and reproducing operations, a loading ring (not shown) is driven, and the pull-out member 3A is guided by the kite groove 2a, and the pull-out member 3B is guided by the guide groove 2b, and rotates in directions A and B in the figure. Then, the tape 6 is pulled out from the cassette 5 by guide rollers 3a and 3b, and is wound around the rotating drum 4 from both sides as shown in FIG. 8(b) to record information on the tape 6. Playback occurs.

In recent years, there has been a growing movement to downsize VTRs by using small-diameter rotating drums, and in this case, it becomes difficult to load the tape while maintaining the tape's inclination angle with respect to the rotating drum with one set of left and right drawer members. There is a noticeable trend towards increasing the number of drawer members.

[Problems to be Solved by the Invention] However, since the conventional example copes with the reduction in the diameter of the rotating drum as described above, as the number of tape pull-out members increases, the loading mechanism that drives the tape pull-out members increases. There was a problem in that it became complicated, and as a result, it hindered the miniaturization of VTRs.

This invention was made in order to solve the problems of the conventional example as described above, and in response to the reduction in the diameter of the rotating drum,
Magnetic recording that reliably maintains the inclination angle of the tape relative to the rotating drum when winding the tape, minimizes the increase in the number of tape pull-out members, allows stable tape loading, and simplifies the loading mechanism. The purpose is to provide playback equipment.

(Means for solving RIP) For this reason, the magnetic recording and reproducing apparatus according to the present invention rotates a pair of tape pull-out members in opposite directions by a loading mechanism to pull out a tape from a cassette, and winds the tape around a rotating drum. In a magnetic recording and reproducing device for recording and reproducing information, a tape pull-out auxiliary member is provided along with one of the tape pull-out members, and both of the members are rotated at a rotation angle created between the tape pull-out auxiliary member and the tape pull-out member. a loading mechanism that is slidable in the rotational direction;
A tape pull-out member provided with the tape pull-out auxiliary member provided in this loading II#I and a tape pull-out auxiliary member are latched by restricting the movement of the tape pull-out auxiliary member, and the two members are rotated at different rotation angles. and a positioning member that is rotatable, and the tape pull-out auxiliary member is rotatably attached to the tip of a slide arm that extends and contracts while being held in the longitudinal direction of the arm rotatably supported by the loading mechanism. In addition, the tape draw-out auxiliary member, which is pivotally supported by the slide arm, supports the slide arm in a first position where the distance between the arm's spindle and the slide arm's spindle is maximum. The arm and the slide arm are configured to be unrotatable relative to each other, and to be rotatable at a second position where the distance between the spindle of the arm and the spindle of the slide arm is minimum, and the arm and the slide arm are connected to each other by a torsion spring. During the process of winding the tape onto the rotating drum, the loading mechanism is biased in the rotating direction and the slide arm is extended, and at the end of tape winding, the loading mechanism is not biased in the rotating direction at all; The above objective is achieved by configuring the slide arm to be biased only in the direction of extension.

[Function] In the magnetic recording and reproducing apparatus according to the present invention configured as described above, a tape pull-out auxiliary member is attached to one tape pull-out member of the loading mechanism, and a different tape pull-out auxiliary member is provided between the tape pull-out member and the tape pull-out auxiliary member A tape drawer is provided with a differential means that rotates both members at a rotation angle, and a loading mechanism that can slide in the rotational direction and a tape drawer that is attached to the loading mechanism and a tape drawer auxiliary member that is attached to the loading mechanism. and a positioning member that restricts the movement of the tape pull-out auxiliary member, latches the tape pull-out auxiliary member, and rotates the two members at different rotation angles, and the differential means allows the two members to be rotated at different rotation angles. is rotated, the tape pull-out auxiliary member is latched to the positioning member, and even after being positioned at a predetermined position, the tape pull-out member is further rotated and rotated at a larger rotation angle than the tape pull-out auxiliary member, The tape is positioned with respect to the rotating drum at a position where the desired tape inclination angle can be reliably imparted. During this time, the arm and slide arm are shortened so that the previously set tape pull-out auxiliary member does not interfere with the subsequent rotation of the tape pull-out member, and the distance between the arm spindle and the slide arm spindle is maximized. When the set tape pull-out auxiliary member reaches the second minimum position from the first position and starts rotating relative to the slide arm, the tape pull-out member can continue to rotate;
A stable tape inclination angle is imparted to the two members by differential rotation angles by the differential means. Furthermore, during the tape winding process on the rotating drum, the repulsive force of the torsion spring, which is biased in the extension direction of the arm and slide arm and in the rotation/movement direction of the loading mechanism, is reduced by the rotation of the loading mechanism at the end of tape winding. Since there is almost no force in the direction of movement, the load on the loading mechanism is reduced.

〔Example〕

An embodiment of the present invention will be described below based on the drawings.

(Structure) Fig. 41 is a plan view of the main part configuration of a magnetic recording/reproducing apparatus in an unloading state showing an embodiment of the present invention, Fig. 2 is a rear view of the main parts of the magnetic recording/reproducing apparatus of the above embodiment, and 3. The figure is the same〈A plan view of the main parts of the magnetic recording and reproducing device showing the loading state of the embodiment''! FIG. J4 is an enlarged plan view of the main part in the unloading state, FIG. 5 is a side view of the main part of the magnetic recording and reproducing apparatus, and FIGS. 6 and 7 are explanatory diagrams of the operation of the main part during loading.

Note that the same or equivalent parts as in the conventional example are represented by the same reference numerals.

In Figures 1 to 7, IA is the main body of the apparatus, 1a is the base of the rotating drum 4, 3C is a tape pull-out member (hereinafter referred to as a pull-out member), 7A is one loading ring constituting the loading mechanism, and 7B is a The other loading ring 8 is a loading ring 7 that is slidable by fitting into two elongated holes 7a provided in the loading ring 7A.
The slide members 8a and 8b held at A are a first support shaft and a second support shaft provided on the floating parts on both sides of the slide member 8, and an arm 9 ( The - end of the first arm (hereinafter referred to as the first arm) is rotatably supported, and
A pull-out member 3C is supported at the other end of the arm 9, and this pull-out member 3C is connected to the guide groove 2 formed in the guide member 2.
The movement is guided by 8. Then, the slide member 8 is attached to the coil spring 12 against the loading ring 7A.
is biased counterclockwise by.

1 (l arm (hereinafter referred to as the second arm), and this second arm 10 is connected to the second support shaft 8b of the slide member 8.
It holds a slide arm 10A which is rotatably supported by a shaft and which fits into a long hole 10d provided in the longitudinal direction of the second arm IO and is slidable in the longitudinal direction of the second arm IO. A third support shaft 10a is provided at the tip of the slide arm IOA, and a tape draw-out auxiliary member (hereinafter referred to as a draw-out auxiliary member) 11 is rotatably supported on the third support shaft 10a. Further, both ends are supported by a spring support piece 10c formed by bending on the outside of the slide arm IOA and a spring support piece 8C provided adjacent to the second support shaft 8-b of the slide member 8. A first position P where the distance between the second support shaft 8b and the third support shaft 10a shown in FIG. 7(a) is maximized by the torsion spring 13 wound around the support shaft 8b, At the same time, the second arm 10 is biased counterclockwise, that is, in the six directions in FIG.
It is biased in the direction extending longitudinally of the arm 10, that is, in the direction E in FIG. At this time, the pull-out auxiliary member 11 is brought into contact with the outer periphery of the guide member 2 by the force of the torsion spring 13 via the slide arm IOA.

Further, a stopper 10b is provided upright on the side surface of the distal end of the slide arm IOA to restrict rotation of the pull-out auxiliary member 11 about the third support shaft 10a at the first position P1.

The pull-out auxiliary member 11 is provided with a guide roller 11a, a stopper receiver 11bJ, and a guide stopper llc.

14 is a positioning member provided on the drum base la;
4a is a positioning stopper receiver (hereinafter referred to as a stopper receiver) provided on the positioning member 14, 14b is also a stopper, and G is a guide portion formed on the inner surface of the positioning member 14 for guiding the pull-out auxiliary member 11.

The guide portion G guides the pull-out auxiliary member if, and presses the slide arm IOA in the direction F in FIG. In the second position P2 shown in FIG. 4(b) where the distance from the shaft 10a is the minimum, the torsion spring 13
The second arm 10 is hardly biased in the counterclockwise direction, that is, in the six directions shown in FIG. 3, and is only biased in the longitudinal direction of the second support shaft 10, that is, in the E direction shown in FIG. ing.

And a long hole 7a provided in the loading ring 7A.
, slide member 8. Second support shaft 8b.

Second arm 10. A differential means that rotates the drawer member 3C and the drawer auxiliary member 11 at different rotation angles by the slide arm 10A, the third support shaft 10a, the elongated hole 10d, the drawer auxiliary member 11, the torsion spring 132, and the positioning member 14. A is configured.

(motion) The operation will be explained based on the above configuration.

1 to 7, first, when the cassette 5 is loaded into the main body IA of the apparatus, guide rollers 3a and 3b of the pull-out members 3B and 3C and the pull-out auxiliary member 11 are moved between the cassette 5 and the tape 6.

The cassette 5 is lowered so that the cassette 11a is interposed therebetween, and is set in the main body IA of the apparatus. Next, when recording and reproducing operations are performed, loading rings 7A and 7B are rotated counterclockwise, i.e., in the six directions in FIG. 1, and clockwise, i.e., in the direction B in FIG. Rotate.

As the loading ring 7A rotates, the slide member 8 similarly rotates counterclockwise via the spring 12, and the pull-out member 3C and the pull-out auxiliary member 11 move into the guide groove 2 of the guide member 2.
and the periphery, and both rotate counterclockwise.

The guide stopper llc of the pull-out auxiliary member 11 comes into contact with the guide portion G of the positioning member 14 constituting the differential means A during loading, and rotates clockwise around the second support shaft 8b, that is, as shown in FIG. will be guided in direction C. At this time,
The pull-out auxiliary member 11 is in the state shown in FIG. 7(a), that is, the distance between the second support shaft 8b and the third support shaft 10a is the maximum. i1 position P1, and the pull-out auxiliary member 11 cannot rotate relative to the third support shaft 10a. Furthermore, as the rotation progresses, it is guided by the guide section G'! The arm 10 and slide arm 10A of iJ2 are compressed against the bias of the spring 13, and the distance between the second support shaft 8b and the third support shaft 10a is the minimum, which is the second position P2, and the pull-out assist When the member 11 reaches the positioning position of the positioning member 14, the stopper receiver 11b and the guide stopper llc move to the stopper 14.
b and the stopper receiver 14a, respectively, and are positioned. As a result, the pull-out auxiliary member 11 is moved to the third support shaft 10.
Counterclockwise around a, that is, '! It becomes possible to rotate in the direction D in FIG. It is biased only in the E direction in the figure.

This reduces the load on the subsequent rotation of the loading ring 7A. Then, at the same time as the slide member 8 constituting the differential means A slides within the long diameter 7a of the loading ring 7A, the pull-out auxiliary member 11 rotates counterclockwise about the third support shaft 10a, that is, in the direction D in FIG. By rotating to , the rotation angle starts to differ,
Subsequently, the rotation of the drawer member 3C is continued, and the drawer member 3C
is transferred from the guide groove 28 of the guide member 2 to the guide groove 20 provided on the rotary drum base 1a, and the differential means A rotates at a different rotation angle between the pull-out member 3C and the pull-out auxiliary member 11. As a result, a position is reached where a desired tape inclination angle with respect to the rotating drum 4 is given, and the pull-out member 3C is positioned, completing loading as shown in FIG.

In this way, with the rotation angle differential means A, it is possible to accommodate rotations of different rotation angles required at the time of loading between the pull-out member 3C and the pull-out auxiliary member 11 with a simple configuration. By using a relatively simple loading mechanism, a desired tape inclination angle can be easily and reliably imparted even to a small-diameter rotating drum.

As a result, it is not only possible to handle small-diameter rotating drums, but also to eliminate the inclination of the rotating drum 4 with the base 1a, making it possible to install the rotating drum 4 perpendicularly to the base 1a. This has the effect of not only being smaller but also thinner.

Note that the present invention is not limited to the above-described embodiments, and the rotation angles of the tape pull-out member and the tape pull-out auxiliary member that are installed together are different from each other as necessary to impart a desired tape inclination angle. The loading mechanism may be constructed using an appropriate differential means that can effectively rotate at a rotation angle.

〔Effect of the invention〕

As explained above, according to the present invention, a tape pull-out auxiliary member is provided on one tape pull-out member of a loading mechanism of a magnetic recording/reproducing device, and a difference between the tape pull-out auxiliary member and the tape pull-out member is provided. A tape drawer including a differential means for rotating both members at a rotation angle, a loading mechanism capable of sliding the differential means in the rotational direction, and a tape drawer auxiliary member provided on the loading mechanism. and a positioning member that restricts the movement of the tape pull-out auxiliary member, latches the tape pull-out auxiliary member, and rotates both of the members at different rotation angles, and the positioning member that controls the movement of the tape pull-out auxiliary member and rotates both members at different rotation angles. In addition to imparting a desired tape inclination angle, the tape pull-out auxiliary member is rotatably supported by the loading mechanism and can be rotated on a support shaft provided at the tip of a slide arm that extends and contracts in the longitudinal direction of this arm. In addition, in the first position where the distance between the arm support shaft and the slide arm support shaft is maximum, it is not possible to rotate with respect to the slide arm, and the arm support shaft and the slide arm support shaft are The arm and slide are configured to be rotatable at the second position where the distance between them is minimum, and the arm and slide are configured to be rotatable at the second position where the distance between
In the second position, the loading mechanism is biased in the rotating direction and the slide arm is extended, and in the second position, at the end of tape winding, the loading mechanism is biased in the rotating direction almost completely, and the slide arm is Since the tape is configured to be biased only in the stretching direction, the tape drawing member and the tape drawing auxiliary member can be rotated at different rotation angles using a simple loading mechanism using rotation angle differential means when loading the tape. This makes it possible to easily and reliably impart the desired tape inclination angle even to small-diameter rotating drums, and the loading mechanism can be simplified to accommodate smaller-diameter rotating drums by simply installing an auxiliary tape pull-out member. In addition, it has become possible to eliminate the inclination of the rotating drum relative to the base of the device body and to install it vertically on the base, which has the effect of making the magnetoelectric recording and reproducing device smaller and thinner. There is.

[Brief explanation of drawings]

Fig. 1 is a plan view of the main parts of a magnetic recording/reproducing apparatus in an unloading state showing an embodiment of the present invention, Fig. 2 is a rear view of the main parts of the magnetic recording/reproducing apparatus of the above embodiment, and Fig. 3 is the same. <A plan view of the main part showing the loading state of the magnetic recording/reproducing apparatus of the embodiment, FIG. 4 is the same.<An enlarged plan view of the main part of the magnetic recording/reproducing apparatus of the embodiment in the unloading state, FIG. A side view of the main parts of the magnetic recording/reproducing apparatus of the example, FIGS. 6 and 7 are diagrams explaining the operation of the main parts during tape loading of the embodiment, and FIG. 8 is an explanation of the operation of M loading of the conventional magnetic recording/reproducing apparatus. It is a diagram. 1.1A-m-Magnetic recording/reproducing device 3A, 3B, 3C--Tape pull-out member 3a, 3b,
1la--Guide rollers 7A, 7B--Loading ring 7g, 10d--Elongated hole 8--Slide member 8g--1JI support shaft 8b--Second support shaft 9.10--Arm 10A--Slide Arm 10a--Spindle 11 of IJ3--Tape pull-out auxiliary member 13--Torsion spring 14--1st position W determining member 8-1 Rotation angle differential means m-Loading mechanism. Parts are represented by the same symbols.

Claims (5)

[Claims] (1) In a magnetic recording and reproducing device in which a pair of tape drawer members are rotated in opposite directions by a loading mechanism to pull out a tape from a cassette, and the tape is wound around a rotating drum to record and reproduce information, one tape drawer member is rotated in opposite directions. A tape pull-out auxiliary member is provided, and a differential means is provided between the tape pull-out auxiliary member and the tape pull-out member for rotating the two members at different rotation angles, and the differential means allows the rotating drum to be rotated to a desired position. What is claimed is: 1. A magnetic recording/reproducing device characterized by imparting a tape inclination angle of . (2) The differential means includes a loading mechanism that is slidable in a rotational direction, a tape pull-out member that is provided with the tape pull-out auxiliary member provided on the loading mechanism, and a tape pull-out member that restricts movement of the tape pull-out auxiliary member. 2. The magnetic recording and reproducing apparatus according to claim 1, further comprising a positioning member that hooks the tape pull-out auxiliary member and rotates both said members at different rotation angles. (3) The tape draw-out auxiliary member is rotatably supported on the tip of a slide arm that extends and contracts while being held in the longitudinal direction of the arm that is rotatably supported on the loading mechanism. The magnetic recording/reproducing device according to claim 1. (4) The tape draw-out auxiliary member that is pivotally supported by the slide arm cannot rotate relative to the slide arm at a first position where the distance between the support shaft of the arm and the support shaft of the slide arm is maximum. 2. The magnetic recording and reproducing apparatus according to claim 1, wherein the magnetic recording and reproducing apparatus is configured to be rotatable at a second position where the distance between the spindle of the arm and the spindle of the slide arm is minimum. (5) The arm and the slide arm are biased by a torsion spring in the rotating direction of the loading mechanism and in the direction in which the slide arm is extended during the process of winding the tape around the rotating drum, and when the tape winding is completed, 2. The magnetic recording and reproducing apparatus according to claim 1, wherein the loading mechanism is configured to be biased only in the extending direction of the slide arm, with substantially no biasing in the rotating direction.