JPH05182316A - Tape loading device - Google Patents

Abstract

PURPOSE:To prevent a magnetic tape from flawing due to a roller guide at the time of changing modes between an unloading mode and a loading mode in a tape loading mechanism of a rotary head type magnetic recording and reproducing device. CONSTITUTION:A shuttle rail 26S is equipped with a rail member, and the the rail member has a slant part in an intermediate position of the shuttle rail 26S, and then when a shuttle block 18S is disposed in this slant part, the roller guide 20S mounted on the shuttle block 18S is inclined to the inclined direction of a drum 16. Under a half loading mode, a relatively positional relationship between the magnetic tape 10 and the roller guide 20S for guiding this is agreeable, and hence the magnetic tape 10 is prevented from flawing deu to the roller guide 20S.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape loading device suitable for use in a rotary head type magnetic recording / reproducing device.

[0002]

2. Description of the Related Art FIG. 4 shows an M loading type tape loading mechanism used in, for example, a rotary head type magnetic recording / reproducing apparatus.

FIG. 1 shows the case where the tape loading mechanism is in a loading mode for recording or reproducing. The magnetic tape 10 is supplied from the supply reel 14S mounted in the tape cassette 12 to the drum 16
And is taken up by the take-up reel 14T mounted in the tape cassette 12 from the drum 16.

The magnetic tape 10 supplied from the supply reel 14S includes a guide 30S arranged inside the tape cassette 12, a first guide 30A arranged outside the tape cassette 12, a second guide 30B and a third guide. Thirty
C, full width erasing head 32, impedance roller 34,
The drum 1 is passed through the roller guide 20S and the tilt guide 22S.
6 is reached. The magnetic tape 10 ejected from the drum 16 includes an inclined guide 22T, a roller guide 20T, an audio erasing head 36, an audio and CTL head 38, a capstan 40 and a pinch roller 42, a fourth guide 30E,
The tape reaches the take-up reel 14T via the guide 30T arranged in the tape cassette 12.

The supply side roller guide 20S and the tilt guide 22S are mounted on a shuttle plate 24S to form a supply side shuttle block 18S, and the winding side roller guide 20T and the tilt guide 22T are mounted on the shuttle plate 24T. Shuttle block 18 on the winding side
Make up T.

The shuttle block 18S on the supply side moves along the shuttle rail 26S on the supply side, and the shuttle block 18T on the take-up side moves on the shuttle rail 26 on the take-up side.
It is configured to move along T.

The shuttle rails 26S and 26T are remote from the cassette 12 and are located near the drum 16 and a second end located inside the cassette 12 and opposite to the first end. Have and.

FIG. 5 shows a state in which the shuttle blocks 18S and 18T move along the shuttle rails 26S and 26T, respectively. Positions A and D are shuttle rails 26S and 26T
Positions B and E correspond to intermediate positions between the first and second ends and positions C and F correspond to the second end.

The tape loading mechanism is in loading mode when the shuttle blocks 18S, 18T are at the first ends of the shuttle rails 26S, 26T, and the shuttle blocks 18S, 18T are in the shuttle rails 26S, 2T.
At the second end of the 6T, the tape loading mechanism is in the unloading mode.

The shuttle blocks 18S, 18T are constructed so as to be able to travel along the shuttle rails 26S, 26T by a mechanism (not shown), which allows the tape loading mechanism to operate between a loading mode and an unloading mode. Can be switched to each other.

When in the loading mode, each of the shuttle blocks 18S and 18T has a shuttle rail 26.
The first end of S, 26T engages and is thereby held by a shuttle holder (not shown).

The shuttle block 18S and the shuttle rail 26S on the supply side will be described below. The shuttle block 18T and the shuttle rail 26T on the winding side are the shuttle block 18S and the shuttle rail 2 on the supply side.
It has the same structure as 6S and has the same function.

In the loading mode in which the shuttle block 18S is at the position A in FIG. 5, the magnetic tape 10 is axially biased upward on the roller guide 20S with respect to the desired path, but the roller guide 20S is shown in the drawing. Rotation in the direction of the solid arrow R causes a downward biasing force, so that the desired relative positional relationship between the magnetic tape 10 and the drum 16 is maintained, and the magnetic tape 10 moves toward the drum 16. It is ensured that they are aligned with the leads.

Further, at this time, the relative positional relationship between the magnetic tape 10 and the roller guide 20S and the tilt guide 22S is also maintained in a desired relationship.

[0015]

However, when the shuttle block 18S is located at the intermediate position B between the first end and the second end of the shuttle rail 26S, the magnetic tape 10 and the drum 16 are separated from each other. A desired relative positional relationship between the magnetic tape 10 and the roller guide 20S and the tilt guide 22S is not preferable.

FIG. 6 shows the shuttle block 18 at the intermediate position of the shuttle rail 26. The shuttle block 18S on the supply side is at the position B and the shuttle block 18T on the take-up side is at the position E.

The magnetic tape 10 is a roller guide 2 on the supply side.
The drum 16 is guided by the 0S and goes through the tilt guide 22S.
And reaches the winding-side tilt guide 22T and the roller guide 20T.

The supply-side shuttle rail 26S and the winding-side shuttle rail 26T are mounted on the mechanical chassis 44 so that their traveling surfaces are on the same plane, and thus the roller guides 20 mounted on the shuttle blocks 18S, 18T.
S and 20T are arranged substantially perpendicular to the mechanical chassis 44.

At the intermediate positions B and E, the tape loading device is in the half loading mode, the magnetic tape 10 moves in the direction of the dashed line arrow L in FIG. 5, and the roller guide 20S also moves to the dashed line arrow L. Rotate along.

Even in the half loading mode, the magnetic tape 10 is biased upward with respect to the desired running path, and the magnetic tape 10 runs in the direction opposite to the running direction in the loading mode. The roller 10 is subjected to an upward biasing force along the axial direction due to the rotation of the roller guide 20S.

Thus, in the half loading mode in the intermediate position B of the shuttle block 18S, the magnetic tape 10 is biased upward in the axial direction along the roller guide 20S so as to contact the upper flange 64 of the roller guide 20S or the upper flange 64. I will move over
As a result, the magnetic tape 10 may be damaged.

In view of the above, the present invention is a tape loading apparatus for a rotary head type magnetic recording / reproducing apparatus, wherein the magnetic tape 10 rolls when the mode is changed between the unloading mode and the loading mode. Abutting on the upper flange 64 of the guide 20 or the upper flange 64
It is an object of the present invention to provide a tape loading device in which the magnetic tape 10 is not damaged by overcoming.

The magnetic tape may be damaged not only on the supply side of the tape loading device as described above but also on the winding side. However, since the back tension acting on the tape is small on the winding side, this problem is less important than on the supplying side, and a detailed description thereof will be omitted.

[0024]

According to the present invention, a shuttle block 18 having a roller guide 20 for guiding the tape 10 and a shuttle rail 26 for traveling the shuttle block 18 is provided. A tape changing between a loading mode in which the tape 10 is engaged with the rotary head of the drum 16 and an unloading mode in which the tape 10 is released from the rotary head of the drum 16 as the block 18 runs along the shuttle rail 26. Shuttle rail 2 in the loading mechanism
6 has an inclined portion 58, and the roller guide 20 is arranged to incline in the inclination direction of the drum 16 when the shuttle block 18 is arranged on such inclined portion 58.

According to the present invention, in the tape loading mechanism, the shuttle rail 26 is the tape supply side shuttle rail 26S, and is arranged at the inclined portion 58 below the tape winding side shuttle rail 26T. There is.

[0026]

The shuttle rail 26 has an inclined portion 58, and the roller guide 20 inclines in the inclination direction of the drum 16 when the shuttle block 18 is arranged on the inclined portion 58 of the shuttle rail 26.

Therefore, the magnetic tape 10 which is being guided by the roller guide 20 is subjected to a downward biasing force due to the inclination of the roller guide 20, so that the relative positional relationship between the magnetic tape 10 and the roller 60 is maintained. This is preferable, and the magnetic tape 10 is prevented from coming into contact with the upper flange 64 of the roller guide 20 or being biased to a position beyond the upper flange 64.

The shuttle rail 26S on the tape supply side is
The shuttle rail 2 on the tape winding side at the inclined portion 58
Since it is arranged below 6T, the roller guide 20 is not excessively biased upward when the shuttle block 18 is arranged on the inclined portion 58.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. In addition, in FIGS. 1 to 3, FIGS.
The same reference numerals are given to the portions corresponding to, and the detailed description thereof will be omitted.

FIG. 1 shows a tape loading device of this example, and half-loading in which shuttle blocks 18S and 18T are arranged at intermediate positions B and E, respectively, similarly to the conventional tape loading device shown in FIG. Indicates the state of being in the mode.

The shuttle plate 24 and the roller guide 20 and the tilt guide 2 mounted on the shuttle plate 24
The shuttle block 18 including 2 and 2 is a shuttle rail 26.
The magnetic tape 10 is mounted so as to be able to run along the track, and extends from the shuttle block 18S on the supply side through the drum 16 to the shuttle block 18T on the winding side.

As apparent from comparison with FIG. 6, the roller guide 20S on the supply side is inclined in the inclination direction of the drum 16, and the shuttle rail 26S on the supply side is arranged below the shuttle rail 26T on the winding side. There is.

FIG. 2 shows the shuttle rail 26 of this example,
Such shuttle rail 26 has a rail member 50 that engages the shuttle plate 24. The rail member 50 is provided along the groove 26A of the shuttle rail 26, and the inner wall 56 thereof constitutes the inner wall of the groove 26A.

The rail member 50 has an inclined portion 58 at a portion corresponding to the position B, and the roller guide 20S is inclined by a predetermined angle at the inclined portion 58.

The rail member 50 may be integrally formed with the shuttle rail 26S, or may be manufactured as a separate member and attached to the shuttle rail 26S.

FIG. 3 shows a cross section of the inclined portion 58 of the supply-side shuttle rail 26S. In the example shown in FIG. 3A, the groove 26A
Inner wall 56 of the rail member 50 is inclined at an angle α, both surfaces of the upper surface 52 and the lower surface 54 of the rail member 50 are also inclined at an angle α with respect to the horizontal direction, and the inner wall 5 of the groove 26A.
6 is arranged at a right angle.

The size of the inclination angle α is the diameter of the drum 16,
It is determined by the position of the roller guide 20 and the running speed of the tape 10.

The upper surface 52 of the rail member 50 is arranged above the upper surface 60 of the shuttle rail 26S, and therefore, as shown in FIG. 1, the rail member 50 has only the height of the upper surface 52 at the inclined portion 58 as shown in FIG. It may be configured to be disposed below.

The lower end of the roller guide 20S may engage with the groove 26A, and the shuttle plate 24S may engage with the upper surface 52 and the lower surface 54 of the rail member 50. Thus, when the shuttle block 18S is arranged at the position B, the roller guide 20S mounted on the shuttle block 18S inclines in the inclination direction of the drum 16 by the angle α, but is not excessively biased upward. ..

In the example shown in FIG. 3B, the inner wall 56 of the groove 26A.
Is inclined by an angle α with respect to the vertical direction, and the rail member 5
The upper surface 52 of 0 is also inclined with respect to the horizontal direction by an angle α and arranged so as to be perpendicular to the inner wall 56 of the groove 26A.

As shown, half of the lower surface 54 of the rail member 50 is formed into a surface inclined by an angle α with respect to the horizontal direction, and the lower surface 54 is engaged with the shuttle plate 24S. You may.

Also in this example, the shuttle rail 26S may be arranged downward by the height of the upper surface 52 of the rail member 50, so that when the shuttle block 18 is arranged on the inclined portion 58 of the shuttle rail 26S, the rollers are arranged. The guide 20S is prevented from being excessively biased upward.

When the roller guide 20S is inclined, the magnetic tape 10 engaged with the roller guide 20S receives a downward biasing force, whereby the relative positional relationship between the magnetic tape 10 and the roller guide 20S. Is preferable, and further, the roller guide 20S is prevented from being excessively displaced upward, and thereby a preferable positional relationship between the both is ensured.

Supply side shuttle rail 26S shown in FIG.
However, if necessary, the shuttle rail 26T on the winding side may be similarly configured.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-mentioned embodiments, and it will be understood by those skilled in the art that various other configurations can be adopted without departing from the gist of the present invention. Easy to understand.

[0046]

According to the present invention, in the tape loading mechanism of the magnetic recording / reproducing apparatus, the shuttle rail 26 has a rail member 50, and the rail member 50 has an inclined portion 58 at an intermediate position of the shuttle rail 26. Since the roller guide 20 mounted on the shuttle block 18 inclines in the inclination direction of the drum 16 when the shuttle block 18 is arranged at the intermediate position of the shuttle rail 26,
In the half-loading mode in which the shuttle block 18 is arranged in such an intermediate position, there is an advantage that the magnetic tape 10 is prevented from abutting on or overcoming the upper flange 64 of the roller guide 20.

According to the present invention, in the tape loading mechanism of the rotary head type magnetic recording / reproducing apparatus, when the mode is changed between the unloading mode and the loading mode, the magnetic tape 10 and the magnetic tape 10 are changed.
The relative positional relationship between the magnetic tape 10 and the roller guide 20 that guides the magnetic tape 10 is preferable, and there is an advantage that the magnetic tape 10 is prevented from being damaged by the roller guide 20.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a usage example of a shuttle rail according to the present invention.

FIG. 2 is a plan view of an example of a shuttle rail according to the present invention.

FIG. 3 is a partial sectional view of an example of a shuttle rail according to the present invention.

FIG. 4 is an explanatory diagram showing a tape running path in an M loading type tape loading mechanism.

FIG. 5 is an explanatory diagram showing three positions of a shuttle block traveling along a shuttle rail.

FIG. 6 is an explanatory diagram showing a usage example of a shuttle rail according to a conventional example.

[Explanation of symbols]

 10 tapes 12 cassettes 14 reels 14S supply reels 14T take-up reels 16 drums 18 shuttle blocks 20 roller guides 22 tilt guides 24 shuttle plates 26 shuttle rails 26A grooves 30 tension guides 32 full width erasing heads 34 impedance rollers 36 audio erasing heads 38 audio and CTL Head 40 Capstan 42 Pinch roller 44 Mechanical chassis 50 Rail member 52 Upper surface 54 Lower surface 56 Inner wall 58 Inclined portion 60 Upper surface

Claims (2)

[Claims] 1. A shuttle block equipped with a roller guide for guiding a tape, and a shuttle rail for traveling the shuttle block, wherein the shuttle block travels along the shuttle rail so that a loading mode and an unloading mode are performed. In the tape loading device changing between loading mode and the loading mode, the shuttle rail has an inclined portion, and the roller guide is inclined in the inclination direction of the drum when the shuttle block is arranged on the inclined portion of the shuttle rail. A tape loading device characterized by being configured as follows. 2. The tape loading device according to claim 1, wherein the shuttle rail is a shuttle rail on the tape supply side and is arranged below the shuttle rail on the tape winding side at the inclined portion. Characteristic tape loading device.