JPH05242573A - Magnetic tape recording and reproducing device - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To provide a magnetic tape recording / reproducing apparatus compatible with magnetic tapes having different tape sizes with a simple structure, a small number of parts, and a low cost. [Composition] Each of the loading posts 31L and 31R includes common tilt poles 41L and 41R, wide height control tape guides 42L and 42R, and narrow height control tape guides 43L and 43R. , Wide tape cassette CB in cassette loading section 12
When the tape is loaded, the magnetic tape is pulled out by the common inclined poles 41L and 41R and the width-regulating tape guides 42L and 42R and wound around the rotary drum 11 over a predetermined angle, and the narrow tape cassette is loaded in the cassette loading unit 12. Shared CS 41L, 41 when CS is loaded
The magnetic tape is pulled out by R and the height-restricting tape guides 43L and 43R for narrow width and wound around the rotary drum 11 over the same angle as the predetermined angle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic tape recording / reproducing apparatus such as a video tape recorder (VTR) which employs a helical scan system, and particularly, it is compatible with recording and reproducing on magnetic tapes having different sizes. The present invention relates to a magnetic tape recording / reproducing apparatus having the same.

[0002]

2. Description of the Related Art In recent years, in comparison with a standard type VTR such as the VHS (registered trademark) system, a tape smaller than the above tape cassette (hereinafter referred to as a standard cassette) is taken into consideration in consideration of portability such as camera photographing. Various VTRs using a cassette (hereinafter referred to as a small cassette) have been proposed.
However, in order to further miniaturize the above small cassette, it has been proposed that not only the cassette size but also the tape width and the like are completely different from those of the standard cassette. For this reason,
These tape cassettes are not compatible with the VTR used,
There has been a demand for a VTR that can be used interchangeably with a standard cassette and a small cassette having different tape widths.

Therefore, conventionally, a VTR capable of recording / reproducing on both a small cassette and a standard cassette is disclosed in Japanese Patent Laid-Open No. 2-12.
It is proposed in Japanese Patent No. 6413. This Japanese Patent Laid-Open No. 2-1
In the VTR of Japanese Patent No. 26413, a regulation guide is provided on a loading base that moves at the time of tape loading and unloading, and an arm is swingably supported near the drum on the chassis, and the regulation guide is provided at the tip of the arm. A height regulating portion that can be fitted to a part in the longitudinal direction is formed.

In this VTR, when a standard cassette is loaded, the loading base is driven to pull out the magnetic tape by a regulation guide or the like, the magnetic tape is wound around the head over a predetermined angle, and the tape is loaded.
Guide the tape running. On the other hand, when a small cassette is loaded, the arm is driven by a solenoid via a lever or the like to fit the height regulation part to the regulation guide, and the size of the sliding contact portion of the regulation guide with the magnetic tape is adjusted to the size of the small cassette. It guides the tape running according to the width of the magnetic tape.

[0005]

DISCLOSURE OF THE INVENTION The conventional VTR described above
There is a standard cassette magnetic tape (wide tape).
However, for the magnetic tape of the small cassette, the height regulating portion of the arm must be fitted into the regulation guide for guiding. Therefore, a mechanism such as a lever and an arm that drives an arm when a small cassette is loaded is indispensable, the mechanism is complicated, and the number of parts is increased, resulting in an increase in size of the entire apparatus. was there.

Further, in the above-mentioned VTR, when loading a tape from a small cassette, the narrow tape must be pulled out to the drum by a regulation guide larger than the width of the narrow tape, and the narrow tape is loaded during loading. There is a high possibility that the tape moves up and down, and when the narrow tape moves up and down, if the height restriction part of the arm fits into the restriction guide when loading is completed, the height restriction part may damage the tape. The present invention has been made in view of the above problems, and is a VT that can perform recording and reproduction with compatibility with a wide tape and a narrow tape without damaging the tape.
It is an object of the present invention to provide R with a simple structure, a small number of parts, and without increasing the size.

[0007]

In order to achieve the above object, the present invention according to claim 1 provides a cassette loading section capable of loading a tape cassette for wide tapes and a tape cassette for narrow tapes having different tape width dimensions. , A rotary drum rotatably supported at a position separated from the cassette loading portion and having a magnetic head, a loading base movably supported on both sides of the rotary drum and driven at the time of tape loading and unloading, and at the time of tape loading A magnetic tape recording / reproducing apparatus having a pair of loading posts for drawing a magnetic tape from the tape cassette and winding the magnetic tape around the rotating drum, wherein the loading posts are each a common inclined pole,
It has a wide height control tape guide and a narrow height control tape guide. When the tape is loaded, when the wide tape cassette is loaded in the cassette loading section, the common tilt pole and the wide height tape are provided. The magnetic tape is pulled out by the tape regulation tape guide and wound around the rotary drum over a predetermined angle, and when the cassette for narrow tape is loaded in the cassette loading portion, the common tilt pole and the height regulation for narrow width are provided. The magnetic tape is pulled out by a tape guide and wound around the rotary drum over the same angle as the predetermined angle.

The invention according to claim 2 is based on the magnetic tape recording / reproducing apparatus according to claim 1, and the loading post is
A vertical tape guide is provided between the common inclined pole and the wide height-control tape guide or the narrow-width height-control tape guide and is in contact with the recording surface of the magnetic tape.

According to a third aspect of the present invention, there is provided a cassette loading section into which a tape cassette for wide tapes and a tape cassette for narrow tapes having different tape width dimensions can be loaded.
A rotary drum rotatably supported at a position separated from the cassette loading portion and having a magnetic head, a loading base movably supported on both sides of the rotary drum and driven during tape loading and unloading, and A magnetic tape recording / reproducing apparatus having a pair of loading posts for drawing a magnetic tape from a tape cassette and winding the magnetic tape around the rotating drum, each of the loading posts having a wide tilt pole, a wide height regulating tape guide, and A narrow width inclined pole and a narrow width height regulation tape guide, and when the cassette for wide tape is loaded in the cassette loading portion, the wide inclination pole and the wide height regulation tape The wide tape is pulled out by the guide and the tape is loaded. In both cases, the wide tape is guided by the wide tilt pole and the wide height regulation tape guide, and when the narrow tape cassette is loaded in the cassette loading portion, the narrow tilt pole is used. The magnetic tape is pulled out by the and the narrow-width height regulation tape guide for tape loading, and the traveling of the narrow-width tape is guided by the narrow-width inclined pole and the narrow-width height regulation tape guide. As configured.

[0010]

In the magnetic tape recording / reproducing apparatus according to the first aspect of the present invention, only the height regulating tape guide for wide width and the height regulating tape guide for narrow width are set. The height-regulating tape guide guides the loading and running of wide tapes.
By using the shared inclined pole and the height-restricting tape guide for narrow width, it is possible to guide the tape loading and running of the narrow tape.

In the magnetic tape recording / reproducing apparatus according to the second aspect of the present invention, when the loading is completed, that is, between the common tilt pole and the wide width height restriction tape guide or the narrow width height restriction tape guide. Since the vertical tape guide is disposed in the vertical tape guide, the running path of the magnetic tape can be corrected, and the vertical tape guide can be used as an impedance roller.

According to a third aspect of the magnetic tape recording / reproducing apparatus of the present invention, there are provided a wide tilted pole and a wide height control tape guide, and a narrow tilt pole and a narrow height control tape guide. Just set the relative position,
Wide tilt tape and wide height control tape guide guide tape loading and running of wide tape, and narrow tilt pole and narrow height restriction tape guide load narrow tape. And driving guidance.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show a magnetic tape recording / reproducing apparatus according to an embodiment of the present invention, FIG. 1 is a schematic plan view when a standard cassette is loaded, FIG. 2 is a schematic front view when the standard cassette is loaded, and FIG. FIG. 4 is a schematic plan view when the small cassette is loaded, and FIG. 4 is a schematic front view when the small cassette is loaded. In this embodiment, the invention according to claim 1 is applied to a VTR adopting the VHS system.

In the figure, 11 is a drum rotatably supported on the chassis 10, and 12 is a drum 11 on the chassis 10.
The cassette loading section is set at a position separated from.
Although not clearly shown in the figure, the drum 11 has a head for recording and reproducing, and is driven by a motor and rotates in a recording and reproducing mode. The cassette loading unit 12 is composed of a cassette housing and the like, and is a standard cassette CB.
The small cassette CS (see FIG. 1) and the small cassette CS (see FIG. 3) can be selectively loaded.

The standard cassette CB is not shown in the figure,
Standard size magnetic tape (wide tape) in case 21
The TB is wound around the reels R1 and R2 and accommodated therein, and two mouth portions 23L and 23R are formed in the lower half of the case 21 by cutting out the case 21. Similarly, in the small cassette CS, the narrow tape TS is reeled in the case 22.
A case portion 22 is formed by cutting the case 22 in the lower half of the case 22 by winding it between r2 and housing. As will be described later, an inclined pole and a height regulation tape guide are inserted into these cassettes CB and CS when they are loaded in the cassette loading unit 12.

On the chassis 10, various guide posts such as a tension roller 13 and the like, an erasing head 14, an audio head 15, a pinch roller 16 and a capstan 17 are erected on the left and right sides of the drum 11, and further. Loading bases 31 on the left and right sides of the drum 11
L and 31R are movably supported, and vertical guide rollers 55L and 55R are arranged on both sides of the drum 11. The tension pole 13, the erasing head 14, the audio head 15, the pinch roller 16, the capstan 17, etc. come into contact with the magnetic tape at the time of recording or reproducing when the tape loading is completed and form a tape running path together with an inclined pole described later. To do. The vertical guide rollers 55L and 55R (hereinafter represented by numbers without subscripts) function as well-known impedance rollers and contact the traveling magnetic tapes TB and TS to impart inertia. In the above description, description of well-known parts in the above-mentioned publications and various documents is omitted.

The loading bases 31L and 31R are connected to a loading motor (not shown) through various transmission mechanisms, and are moved by being driven by the loading motor during loading and unloading. These loading bases 31L and 31R are, as shown in FIG. 1 and FIG.
No. 2 (phantom line in the figure, hereinafter referred to as a loading position), and when loading is completed, they are located on the left and right sides of the drum 11 (solid line in the figure, hereinafter referred to as a loading completion position).

The loading base 31L is provided with a common tilt pole 41L, a wide height control tape guide 42L and a narrow height control tape guide 43L, and similarly, the loading base 31R also has a common tilt pole 41L.
R, a wide height regulation tape guide 42R, and a narrow height regulation tape guide 43R are erected. In the following description, these loading bases 31L, 31R,
Common inclined poles 41L, 41R, wide height control tape guides 42L, 42R, narrow height control tape guide 4
3L and 43R and the above-mentioned mouse parts 23L and 23R are represented by numbers without subscripts as needed.

The common tilt pole 41 is a standard cassette CB.
Has a taper sliding contact portion having a longitudinal dimension larger than the width of the wide tape TB, and is erected obliquely in accordance with the inclination angle of winding the magnetic tape TB around the drum. This shared tilt pole 41
As shown in FIG. 1 and FIG. 3, they are arranged at positions where they are inserted into the mouse part 23 of the standard cassette CB and the mouse part 24 of the small cassette CS loaded in the cassette loading part 12 at the loading position of the loading base 31. ..

In the wide height-control tape guide 42, a tape sliding contact portion having a longitudinal dimension substantially equal to the width of the wide tape TB of the standard cassette CB is formed by a pair of flange portions and is erected vertically on the loading base 31. It When the standard cassette CB is loaded in the cassette loading section 12, the width-restricting height guide tape guide 42 is more magnetic than the narrow-width height-restricting tape guide 43 in the mouse portion 23 at the loading position of the loading base 31. It is located on the T side (see FIG. 1), and when the small cassette CS is loaded in the cassette loading section 12, it is located outside the mouth section 24 and closer to the drum 11 than the wide magnetic tape TB (FIG. 3). reference).

Further, the height control tape guide 43 for narrow width is used.
Is formed by a pair of flange portions of a tape sliding contact portion having a longitudinal dimension substantially equal to the width of the narrow tape TS of the small cassette CS, and is vertically installed on the loading base 31. When the standard cassette CB is loaded in the cassette loading section 12, the narrow height regulating tape guide 43 is more magnetic than the wide height regulating tape guide 42 in the mouse portion 23 at the loading position of the loading base 31. It is located apart from T (see FIG. 1), and when the small cassette CS is loaded in the cassette loading unit 12, it is placed in the mouse unit 24 (see FIG. 3).

In the VTR of this embodiment, when the standard cassette CB is loaded in the cassette loading section 12 as shown by the phantom line in FIG. 1, each loading base 31 is shared within the mouse section 23 of the standard cassette CB. The slanted pole 41, the width-regulating height regulating tape guide 42 and the narrow-width height regulating tape guide 43 are inserted so that the width-limiting height regulating tape guide 42 is placed on the magnetic tape TB rather than the narrow-width height regulating tape guide 43. Located close to each other. For this reason, when the tape loading is started, the wide magnetic tape TB in the standard cassette CB is pulled out from the cassette case 41 by the common tilt pole 41 and the wide height regulating tape guide 42.
It is wound around the head 11 over a predetermined angle. At this time, since the wide height controlling tape guide 42 has a tape sliding contact portion which is substantially equal to the wide magnetic tape TB, the tape T
B does not shift in the longitudinal direction with respect to the wide height control tape guide 42.

When the tape loading is completed, as shown by the solid line in FIG. 1, the wide magnetic tape TB comes into contact with the common inclined pole 41, the wide height regulating tape guide 42, and the vertical tape guide 55, and the drum tape 11
The surrounding tape path is formed by the common inclined pole 41, the wide and height regulating tape guide 42, and the vertical tape guide 55. For this reason, even if the magnetic tape TB travels after shifting to a recording mode or the like, the magnetic tape TB travels while being guided by the wide height control tape guide 42, and the magnetic tape TB does not move in the width direction. .. When the tape is running, the vertical tape guide 55 comes into contact with the magnetic tape TB to impart inertia and function as a well-known impedance roller, so that the vibration of the magnetic tape TB can be reduced.

When the small cassette CS is loaded in the cassette loading unit 12, as shown by the phantom line in FIG. 3, the common tilt pole 41 and the narrow width height regulation tape guide are provided in the mouse portion 24 of the small cassette CS. Only the width 43 is inserted, and the wide height restriction tape guide 42 is located between the case 22 and the drum 11. Therefore, when the tape loading is started, the narrow magnetic tape TS in the small cassette CS is shared by the common inclined pole 41 and the narrow height regulating tape guide 43.
Is pulled out from the cassette case 42 by the
The tape is wrapped around the same angle as the wide magnetic tape. At this time, since the height-restricting tape guide 43 for narrow width has a tape sliding contact portion which is almost equal to the narrow magnetic tape TS,
The tape TS does not shift in the width direction with respect to the narrow height restriction tape guide 42.

When the tape loading is completed, the narrow magnetic tape TS contacts the common inclined pole 41, the narrow height regulating tape guide 43, and the vertical tape guide 55 as shown by the solid line in FIG. , Drum 11
The surrounding tape path is formed by the common inclined pole 41, the narrow height regulating tape guide 43, and the vertical tape guide 55. Therefore, as in the case of the wide tape TB described above, even if the magnetic tape TS travels after shifting to the recording mode or the like, the magnetic tape TS travels while being guided by the narrow height control tape guide 43, The magnetic tape TS does not move in the width direction, and the vertical tape guide 55
In the vicinity of the drum 11, the magnetic tape TS is brought into contact with the magnetic tape TS to give inertia, so that the vibration of the magnetic tape TS can be reduced and high reliability in recording and reproduction can be obtained.

5 to 8 show a VTR according to another embodiment of the present invention, FIG. 5 is a schematic plan view when a standard cassette is loaded, FIG. 6 is a schematic front view when the standard cassette is loaded, and FIG. Is a schematic plan view when the small cassette is loaded, and FIG. 8 is a schematic front view when the small cassette is loaded. The present invention is applied to the third embodiment, and the same parts as those of the above-mentioned embodiment are designated by the same reference numerals and the description thereof will be omitted.

In this embodiment, the loading base 31
The wide width height regulating tape guides 42L and 42R and the narrow width height regulating tape guides 43L and 43R are provided on the L and 31R, respectively, and the wide width inclined pole 48L,
48R and narrow inclination poles 49L and 49R are provided.
The wide-width tilted poles 48L and 48R (hereinafter represented by numbers without subscripts) have a longitudinal dimension substantially equal to the width of the wide tape TB, and are obliquely erected on the loading base 31. Like the wide height regulating tape guide 42, the wide tilt pole 48 is provided with the loading base 31 when the standard cassette CB is loaded in the cassette loading section 12.
It is located inside the mouse portion 23 at the loading position (see FIG. 5), and is located outside the mouse 24 in the case 22 when the small cassette CS is loaded (see FIG. 7).

Also, the narrow poles 49L, 49R
(Hereinafter, represented by numbers without subscripts) is narrow tape T
It has a longitudinal dimension substantially equal to the width of S and is vertically installed on the loading base 31. This narrow pole 49
Similarly to the narrow width height regulation tape guide 43, when the standard cassette CB is loaded in the cassette loading portion 12, it is located farther from the magnetic tape than the wide inclination pole 48 in the mouse portion 23 ( When the small cassette CS is loaded, the small cassette CS is arranged so as to be located inside the mouse portion 24 (see FIG. 7).

In this embodiment, the standard cassette CB
When each is loaded, as shown in FIG.
8, 49 and the height control tape guides 42, 43 are located in the mouth portion 23, but the tape loading of the wide tape TB is performed by the wide height control tape guide 42 and the wide tilt pole 48 for recording. Alternatively, at the time of reproduction, the tape guide 42 and the fixed inclined pole 56
And the traveling of the wide tape TB is guided by the wide inclined pole 48.

Further, when the small cassette CS is loaded, as shown in FIG.
2 and the widened inclined pole 48 are located outside the mouth portion 24, and the narrow height regulating tape guide 43 and the narrowed inclined pole 49 are located inside the mouth portion 24. Then, the tape loading from the small cassette CS is performed by the narrow width height regulation tape guide 43 and the narrow width inclined pole 49,
During recording, the tape guide 43 and the inclined pole 49 guide the traveling of the narrow tape TS.

[0031]

As described above, according to the magnetic tape recording / reproducing apparatus of the first aspect of the present invention, the common tilt pole, the wide height controlling tape guide and the narrow height are mounted on the loading base. With a regulated tape guide,
Only by adjusting these positional relationships, it is possible to perform tape loading for both wide tapes and narrow tapes and guide tape running with a simple structure using an existing loading mechanism etc., reducing the number of parts. The cost can be reduced, and the tape is not damaged when it is loaded.

According to the magnetic tape recording / reproducing apparatus of the second aspect of the present invention, in addition to the effect of the first aspect of the invention, a space between the common tilt pole and each height regulation tape guide is provided. Since the vertical tape guide functioning as an impedance roller is arranged, inertia can be imparted to the magnetic tape in the vicinity of the drum, that is, the head, and high reliability in recording and reproduction can be obtained.

According to the magnetic tape recording / reproducing apparatus of the third aspect of the invention, the loading base has a wide height controlling tape guide, a wide tilting pole, a narrow height controlling tape guide and a narrow width. For the inclined pole,
Since the tape loading and the guide of the running of the wide tape and the narrow tape can be performed only by adjusting the positional relationship between them, the structure is simplified, the number of parts is reduced, and the cost is reduced, like the invention according to claim 1. It can be reduced and the tape is not damaged.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a magnetic tape recording / reproducing apparatus according to an embodiment of the present invention in a standard cassette loaded state.

FIG. 2 is a schematic front view of the magnetic tape recording / reproducing apparatus in the same state.

FIG. 3 is a schematic plan view of the magnetic tape recording / reproducing apparatus in a small cassette loaded state.

FIG. 4 is a schematic front view of the magnetic tape recording / reproducing apparatus in the same state.

FIG. 5 is a schematic plan view of a magnetic tape recording / reproducing apparatus according to an embodiment of the present invention in a standard cassette loaded state.

FIG. 6 is a schematic front view of the magnetic tape recording / reproducing apparatus in the same state.

FIG. 7 is a schematic plan view of the magnetic tape recording / reproducing apparatus in a small cassette loaded state.

FIG. 8 is a schematic front view of the magnetic tape recording / reproducing apparatus in the same state.

[Explanation of symbols]

10 ... Chassis, 11 ... Drum, 12 ...
Cassette loading section 21, 22, ... Cassette case, 2
3, 23a, 23b, 24 ... Mouse part, 31, 31
L, 31R ... Loading base, 41, 41L,
41R ・ ・ ・ Shared tilt pole, 42, 42L, 42R ...
・ Wide height control tape guide, 43, 43L, 43R
... Height control tape guide for narrow width, 48, 48L, 4
8R ... Inclined pole for wide width, 49, 49L, 49R ...
・ Slender pole for narrow width, 55, 55L, 55R ・ ・ ・ Vertical tape guide (impedance roller), CB ・ ・ ・ Standard cassette, CS ・ ・ ・ Small cassette, TB ・ ・ ・ Wide magnetic tape, TS ・ ・ ・ Width Narrow magnetic tape.

Claims (3)

[Claims] 1. A rotation having a cassette loading portion in which a tape cassette for wide tapes and a tape cassette for narrow tapes having different tape width dimensions can be loaded, and a magnetic head rotatably supported at a position separated from the cassette loading portion. A drum, a loading base movably supported on both sides of the rotating drum and driven at the time of tape loading and unloading, and a magnetic tape drawn from the tape cassette at the time of tape loading and provided on the loading base and wound around the rotating drum. A magnetic tape recording / reproducing apparatus having a pair of hanging posts for hanging, wherein each of the loading posts has a common inclined pole, a wide width height regulating tape guide, and a narrow width height regulating tape guide. When loading the tape, When a wide tape cassette is loaded in the cassette loading section, the magnetic tape is pulled out by the common tilt pole and the wide height regulating tape guide and wound around the rotary drum at a predetermined angle, When the cassette for narrow tape is loaded, the magnetic tape is pulled out by the common inclined pole and the height-regulating tape guide for narrowing and wound around the rotary drum at the same angle as the predetermined angle. Characteristic magnetic tape recording and reproducing device. 2. The magnetic tape recording / reproducing apparatus according to claim 1, wherein the loading post is configured such that, when the tape loading operation is completed, the common tilt pole and the wide height height regulating tape guide or the narrow width height are provided. A magnetic tape recording / reproducing apparatus, characterized in that a vertical tape guide is provided between the magnetic tape and the regulation tape guide and is in contact with the recording surface of the magnetic tape. 3. A rotation having a cassette loading section into which a tape cassette for wide tapes and a tape cassette for narrow tapes having different tape width dimensions can be loaded, and a magnetic head rotatably supported at a position separated from the cassette loading section. A drum, a loading base movably supported on both sides of the rotary drum and driven during tape loading or unloading, and a pair of loading posts for pulling out a magnetic tape from the tape cassette and winding the tape around the rotary drum during tape loading. A magnetic tape recording / reproducing apparatus having: each of the loading posts having a wide inclination pole, a wide height regulation tape guide, a narrow inclination pole, and a narrow height regulation tape guide. Then, the wide tape cassette is When filled, the wide tape is pulled out by the wide tilt pole and the wide height regulating tape guide to perform tape loading, and the wide tilt pole and the wide height regulating tape guide are used to When the narrow tape cassette is loaded in the cassette loading portion by guiding the running of the wide tape, the magnetic tape is pulled out by the narrow tilt pole and the narrow height regulating tape guide. A magnetic tape recording / reproducing apparatus, characterized in that while the loading is performed, the traveling of the narrow tape is guided by the narrow inclined pole and the height-restricting tape guide for narrowing.