JPH0512771A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To drive both a standard type and a small-sized cassette by composing the reproducing device of a means for driving a magnetic tape in the standard tape cassette or small-sized tape cassette, a small-sized cassette tape positioning means, and a means which restricts the position of the means. CONSTITUTION:When the small-sized cassette is loaded in the device, the restricting means for the small-sized cassette positioning means is at an operation position, so the tape driving means can be positioned at a specific position. When the standard type cassette is loaded in the device, a restricting means for light is moved to a nonoperation position in response to the loading operation of the standard cassette and the positioning means for the small-sized cassette is moved away. Namely, the tape driving means 45a and 45b fit the standard type or small-sized cassette to unshown reel hubs when the cassette is loaded. Positioning pins 12a and 12b of the small-sized cassette are in the same structure; and the operation of the pin 12a is restricted by a slider 26a and an arm 27a and that of the pin 12b is restricted by a slider 26b and an arm 27b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to positioning of a small tape cassette of a magnetic recording / reproducing apparatus capable of mounting a standard tape cassette or a small tape cassette smaller than the standard tape cassette.

[0002]

2. Description of the Related Art In recent years, not only standard tape cassettes but also small tape cassettes smaller than standard tape cassettes have been used as tape cassettes for magnetic recording / reproducing devices such as VTRs, and are widely used in camera-integrated VTRs. There is. By the way, conventionally, in order to record / reproduce this small tape cassette on a VTR for a standard tape cassette, it is necessary to use a dedicated adapter to obtain a tape loop equivalent to that of the standard tape cassette. There was a problem that the operability was poor because the adapter had to be attached and detached.

However, recently, various companies have proposed a VTR which can mount a small tape cassette and a standard tape cassette without using the above-mentioned adapter. In such a device, it is possible to selectively mount either a small tape cassette or a standard tape cassette without using a dedicated adapter, which leads to improvement in operability.

As a conventional technique, for example, Japanese Patent Application Laid-Open No. 2-22
There is a magnetic recording / reproducing apparatus as disclosed in Japanese Patent No. 0260.

[0005]

However, in the above-mentioned construction, the mechanism for detecting the insertion of either the small tape cassette or the standard tape cassette is interlocked with the mechanism for positioning the small tape cassette at a predetermined position. Therefore, a driving source of a rod for moving the spacer pin is required, which complicates the positioning mechanism of the small tape cassette, increases the number of parts, hinders thinning of the mechanism portion, and costs are high. there were.

The present invention solves the above problems and simplifies the positioning mechanism for a small tape cassette.
(EN) A magnetic recording / reproducing apparatus which can reduce the number of parts, can reduce the thickness of a mechanical portion, and is inexpensive.

[0007]

In order to solve the above problems, the magnetic recording / reproducing apparatus of the present invention uses a magnetic tape in a standard tape cassette or a magnetic tape in a small tape cassette smaller than the standard tape cassette. A tape driving means for driving, a positioning means movable to a first position for positioning the small tape cassette at a predetermined position of the tape driving means, and a second position for not hindering the mounting of the standard type tape cassette, and a positioning means. Is movable to an operating position that locks the first position and a non-operating position that does not lock the positioning unit to the first position, and moves from the operating position to the non-operating position by the mounting operation of the standard type tape cassette. It is composed of a regulation means.

[0008]

According to the magnetic recording / reproducing apparatus of the present invention having the above-mentioned structure, when the small tape cassette is mounted in the apparatus, the small tape cassette positioning means is locked at the first position because the restricting means is in the operating position. The tape cassette is positioned at a predetermined position on the tape drive means. Further, when the standard type tape cassette is mounted on the apparatus, the restricting means moves to the non-operating position by the mounting operation of the standard type tape cassette, so that the small tape cassette positioning means moves to the second position and the standard type tape cassette is moved. Does not interfere with the installation.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a side sectional view of a small tape cassette positioning means, a tape driving means, and a regulating means from the insertion of the small tape cassette, and FIGS. 2 and 3 are small tape cassette positioning means, a tape driving means, and 4 is a plan view and a side sectional view of the regulating means, FIG. 4 is a side sectional view of the small tape cassette positioning means, the tape driving means and the regulating means from the insertion of the standard type tape cassette to the middle of mounting, and FIGS. 5 and 6 are the standard type tape cassettes. FIG. 7 is a side cross-sectional view of the small tape cassette positioning means, the tape driving means, and the regulating means during mounting, and FIG. 7 is a side sectional view of the small tape cassette positioning means, the tape driving means, and the regulating means during mounting of the standard type tape cassette. is there.

First, the positioning means for the small tape cassette will be described. The small tape cassette positioning pins 12a and 12b, which are small tape cassette positioning means,
Since the configurations are the same, the configuration of the positioning pin 12a will be described below as a representative. The small tape cassette positioning pin 12a includes a height determining portion 13a and a retaining portion 14a. The chassis 41 is provided with a guide hole 42a, a rotation stop hole 43, and contact portions 44a and 44b. The slider base 21 is provided with a guide portion 22a, a detent hole 23, guide holes 24a and 24b, and a cutout portion 25, and is fixed to a predetermined position of the chassis 41. The positioning pin 12a is movable along the guide hole 42a of the chassis 41 and the guide hole 24 of the slider base 21, and does not rotate due to the retaining portion 14a of the small tape cassette positioning pin and the rotation preventing hole 23 of the slider base. It is like this. Here, in this configuration, the detent hole of the positioning pin 12b is provided in the chassis 41. The small tape cassette positioning pin 12a is biased upward by the compression spring 15a, but the retaining portions 14a of the small tape cassette positioning pin abut the slider base 21 so that they do not come off. Here, in this configuration, the retainer of the positioning pin 12b comes into contact with the chassis 41.

Next, the regulation means will be described. The regulating means is a slider L26a, a slider arm L27a, and a slider rod 2 for the small tape cassette positioning pin 12a.
8, the slider arm shaft 29, and the slider R26 for the small tape cassette positioning pin 12b.
a, a slider arm R27a, a slider rod 28, and a slider arm shaft 29. Here, the restricting means for the small tape cassette positioning pins 12a and 12b are symmetrical with respect to the slider rod, so that the restricting means for the small tape cassette positioning pins 12a will be described as a representative as in the above. The slider L26a is provided with a guide groove 30a, a locking portion 32a, and a restricting portion 33a. The slider L26a is horizontally movable by the guide groove 30a and the guide portion 22a of the slider base. Slider L26a, slider R26b
Are urged by a tension spring 31 so that they are close to each other in the horizontal direction.
2a and the guide groove 30a of the slider L26a contact each other, so that the locking portion 32a maintains a position directly below the height determining portion 13a of the small tape cassette positioning pin 12a. The slider arm L27a is rotatable around the slider arm shaft 29, but the action portion 3
4a is movable only in the horizontal direction by the restricting portion 33a of the slider L26a. The slider bar 28 is at a position where it does not interfere with the small tape cassette 11 in a plane.
In addition, it is arranged at a position where it interferes with the standard type tape cassette 1 in a plane, and along the guide hole 24b of the slider base,
It can be moved up and down. Slider arm shaft 2
9 is planted on the slider rod 28,
Move up and down with.

Next, the tape drive means will be described. The tape driving means 45a and 45b are reel hubs (not shown) of the standard tape cassette or the small tape cassette when the standard tape cassette or the small tape cassette is mounted.
Then, the tape can be driven.

Standard type tape cassette positioning pins 2a,
2b and height determining pins 3a, 3b are erected from the chassis 41, and when the standard type tape cassette is mounted, the positioning pins 2a, 2b are positioning holes (not shown) provided on the back surface of the standard type tape cassette 1. The height determining pins 3a and 3b are arranged so as to be in contact with a height determining surface (not shown) provided on the back surface of the tape.

The operation of the magnetic recording / reproducing apparatus configured as described above will be described below with reference to FIGS. 1 to 7. Here, small tape cassette positioning pin 1
2a and 12b have the same configuration, and regarding the regulation means,
The slider L26a and the slider arm L27a, which are the regulation means of the small tape cassette positioning pin 12a, are symmetrical with respect to the slider L26b and the slider arm L27ba, which are the regulation means of the small tape cassette positioning pin 12b, with respect to the slider rod. The operation will be described below by using the positioning pin 12a and its regulating means as a representative.

First, the mounting operation of the small tape cassette will be described. As shown in FIG. 1, the small tape cassette 11 is horizontally moved by a guide member called a holder (not shown) to a position just above the tape driving means 45a and 45b, and then downwardly. Moving.
The small tape cassette 11 has the tape drive means 45a, 45.
As shown in FIGS. 1 and 2, when the slider bar 28 is located just above b, the slider bar 28 is planarly attached to the small tape cassette 1.
It does not interfere with 1. At this time, the slider L26
The a and the slider R26b are urged by a tension spring 31 so that they are close to each other in the horizontal direction. Small tape cassette positioning pin 12a height determining portion 1
Hold the position directly below 3a. After that, the small tape cassette 11 moves downward, and the small tape cassette positioning pins 12a are inserted into the holes (not shown) on the back surface of the small tape cassette as shown in FIG. The height determining portion 13a of the cassette positioning pin comes into contact with the locking portion 32a of the slider L26a to determine the height,
The small tape cassette 11 is positioned. This is the first position. At this time, the tape driving means 45a is fitted with the reel hub of the small tape cassette tape 11, and the tape can be driven.

Next, the mounting operation of the standard type tape cassette will be described. As shown in FIG. 4, the standard tape cassette 1 is horizontally moved by a guide member called a holder (not shown) to a position just above the tape driving means 45a and 45b, and then downward. Move to.
The standard type tape cassette 1 has the tape drive means 45a, 45.
As shown in FIGS. 4 and 5, the slider bar 28 is located at a position where it will interfere with the standard type tape cassette 1 in a plan view when it comes directly above b. After that, the standard type tape cassette 1 moves downward, and as shown in FIG.
The slider bar 28 contacts the standard tape cassette 1.
The downward movement operation of the standard tape cassette 1 causes the slider rod 28 to move downward. At this time, the slider arm shaft 29 moves downward, and further, the acting portion 34a of the slider arm L27a causes the regulating portion 3 of the slider L26a to move.
Since the slider arm L27a is restricted to move in the horizontal direction by 3a, the slider arm L27a pulls the slider L26a against the urging force of the tension spring 31, and the locking portion 32 of the slider L26a.
a is moved from directly below the height determining portion 13a of the small tape cassette positioning pin 12a to a position where it does not interfere in a plane. This operation is performed by the small tape cassette positioning pin 12
It is completed before a comes into contact with the standard type tape cassette 1.
Then, the standard type tape cassette moves downward, contacts the standard type tape cassette 1 and the small tape cassette positioning pin 12a, and moves downward against the compression spring 15a. Tape cassette positioning pins 2a, 2b and height determining pins 3a, 3
Positioned by b. This is the second position.
At this time, the tape driving means 45a and 45b are fitted to the reel hub of the standard type tape cassette 1 so that the tape can be driven.

With the above-mentioned structure, the type of tape is detected by the mounting operation of the small tape cassette or the standard tape cassette, and therefore the detecting means for detecting the insertion of the standard tape cassette or the small tape cassette is provided. The drive source for driving the small-sized tape cassette positioning mechanism in conjunction with is unnecessary, the small-sized tape cassette positioning mechanism is simplified, the number of parts can be reduced, and the cost can be reduced as a result.

[0018]

As described above, according to the present invention, the tape driving means for driving the magnetic tape in the standard tape cassette or the magnetic tape in the small tape cassette smaller than the standard tape cassette, and the small tape cassette are taped. A positioning unit that is movable between a first position for positioning the driving unit at a predetermined position and a second position that does not hinder the mounting of the standard type tape cassette; and an operating position for locking the positioning unit at the first position. The positioning means can be moved to a non-operating position that is not locked at the first position, and is composed of a restricting means that moves from the operating position to the non-operating position by the mounting operation of the standard type tape cassette, thereby reducing the size. Mechanism for detecting insertion of tape cassette or standard type tape cassette and drive source for driving small tape cassette positioning mechanism in conjunction with this mechanism Becomes unnecessary, simplifies the mechanism, the number of components can be reduced, thereby reducing costs as a result of the above.

[Brief description of drawings]

FIG. 1 is a side sectional view of a small tape cassette positioning means, a tape driving means, and a regulating means from insertion to mounting of a small tape cassette.

FIG. 2 is a plan view of a small tape cassette positioning means, a tape driving means, and a regulating means when the small tape cassette is mounted.

FIG. 3 is a detailed side sectional view of positioning means and regulating means of the small tape cassette when the small tape cassette is mounted.

FIG. 4 is a side sectional view of a small tape cassette positioning means, a tape driving means, and a regulating means from the insertion of the standard type tape cassette to the middle of mounting.

FIG. 5 is a plan view of positioning means, tape driving means, and regulating means for a small tape cassette when a standard type tape cassette is mounted.

FIG. 6 is a detailed side sectional view of a positioning means, a tape driving means and a regulating means of a small tape cassette when a standard type tape cassette is mounted.

FIG. 7 is a detailed side sectional view of a positioning means, a tape driving means, and a regulating means for a small tape cassette while the standard type tape cassette is being mounted.

[Explanation of symbols]

 1 Standard type tape cassette 2a, 2b Standard type tape cassette positioning pin 3a, 3b Standard type tape cassette height determining pin 11 Small tape cassette 12a, 12b Small size tape cassette positioning pin 13a, 13b Height determining part 14a, 14b Retaining part 15a, 15b Compression spring 21 Slider base 22a, 22b Guide part 23 Anti-rotation hole 24a, 24b Guide hole 25 Notch part 26a, 26b Slider L, R 27a, 27b Slider arm L, R 28 Slider rod 29 Slider arm shaft 30a, 30b Guide groove 31 Extension spring 32a, 32b Locking part 33a, 33b Restricting part 34a, 34b Working part 41 Chassis 42a, 42b, 42c Guide hole 43 Detent hole 44a, 44b Abutting part 45a, 45b Tape drive means

Claims (1)

Claim: What is claimed is: 1. A tape drive means for driving a magnetic tape in a standard tape cassette or a magnetic tape in a small tape cassette smaller than the standard tape cassette, and the small tape cassette as the tape. Positioning means movable to a first position for positioning the driving means at a predetermined position and a second position that does not hinder the mounting of the standard type tape cassette, and an operation for locking the positioning means at the first position. A position and a restricting means that is movable to a non-operating position that does not lock the positioning means to the first position, and that moves from the operating position to the non-operating position by the mounting operation of the standard type tape cassette. A magnetic recording / reproducing device equipped.