JPH0719821U - Cassette loading device - Google Patents

Abstract

(57) [Summary] [Purpose] When a cassette tape is mounted on a cassette-type magnetic recording / reproducing apparatus, the tape does not slacken even when the tape is slackened and the tape is attracted by static electricity on the lid. An object of the present invention is to provide a cassette mounting device capable of guiding a tape position to a good cylinder. When a cassette 20 is mounted, a tape guide member 12a is provided on the lower side near the center of the front lid opener 12 of the cassette device 10,
Tape 2 due to the effects of static electricity on cassette lid 12
When 2 is adsorbed, the sliding tape 22 can be guided from the cassette lid 12 to a normal tape position. As a result, it is possible to prevent the tape 22 from riding on the cylinder head and to mount the tape 22 in a normal tape position.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a magnetic recording / reproducing apparatus such as a cassette type video tape recorder (hereinafter referred to as a VTR), and more particularly to a cassette loading apparatus capable of preventing the tape from riding on a cylinder when loading the cassette tape.

[0002]

[Prior art]

 In general, a cassette type VTR is equipped with a tape loading mechanism for pulling out a tape from a cassette and mounting it on a rotating head cylinder. By using this tape loading mechanism, it is possible to accurately measure the rotating head cylinder of the tape when the VTR is used. It can be installed in any position.

In such a loading mechanism, for example, a U loading mechanism in which a tape is drawn out with one pin and wound around a rotary head cylinder in sequence is a β system, and an M loading mechanism in which two tapes are simultaneously installed. It is well known that the (parallel loading mechanism) is adopted in a VHS type VTR or an 8 mm VTR.

In addition, the tape loading mechanism does not damage the tape when the cassette tape is mounted on the cassette type VTR or the like, loads the tape quickly and surely, and guarantees high-precision running after the loading. Desirable and a requirement for tape loading.

By the way, a cassette tape used in a cassette type VTR equipped with such a tape loading mechanism has a predetermined size because the cassette structure, size and accuracy influence the compatibility of the tape. Has been formed.

In general, the structure of a cassette is composed of two tape reels, a cassette case, and a guard panel for protecting the tape (a lid for protecting the tape, which will be referred to as a lid hereinafter). This lid is normally locked so that it cannot be opened, and when it is attached to the VTR, the lock release pin provided on the left side of the cassette, for example, is pushed to unlock it so that it can be opened. It is configured. There is a notch on the bottom of the cassette that holds the loading pole for pulling out the tape.

When mounting such a cassette on the VTR, the cassette is inserted into a cassette mounting device provided on the VTR, the lid lock of the cassette is unlocked by a lock releasing means, and the cassette mounting device further mounts the cassette. Is carried to a predetermined position in the VTR, the lid of the cassette is opened, and after being carried to the predetermined position, the tape is pulled out by the tape loading mechanism and wound around the rotary head cylinder.

This cassette loading device generally comprises a cassette holder for accommodating a cassette tape, a lid lock release mechanism for the accommodated cassette, and a lid opener for opening and closing the lid. At the unloading position, the cassette tape is accommodated, conveyed horizontally to a predetermined position inside the VTR, and further lowered vertically to mount the cassette at the predetermined position inside the VTR. When ejecting the cassette (hereinafter referred to as "eject"), the cassette is transported to the ejection position in the reverse operation of the above.

When the cassette is accommodated in the cassette loading device, the lid release mechanism releases the lock of the lid, and when the cassette is lowered vertically, the lid opener opens the lid of the cassette, which exposes the tape from the cassette. The tape can be pulled out by loading the tape.

Further, at the time of cassette ejection, after the tape is returned into the cassette by the tape loading mechanism, the cassette mounting device raises the cassette in the vertical direction to close the lid, while the lid of the cassette is closed by a spring. The lid is closed because it is biased in the direction. After that, the cassette is horizontally conveyed in the front direction of the VTR and ejected.

However, when the cassette tape is mounted on the VTR using the conventional cassette mounting device, the cassette device (not shown in the drawing) is moved downward with the cassette tape 2 as shown in FIG. 5, for example. Then, the lid 3 of the cassette 2 is rotated and opened around the lid shaft 6 as a fulcrum by the opener of the cassette loading device at this time. In this case, as shown in the normal tape position A, Tape 4 must be placed. However, if the tape 4 of the cassette 2 is slackened, for example, the tape 4 inside the lid 3 as shown in the tape position B is affected by the static electricity of the lid 3 of the cassette 2. It will be adsorbed to the surface, and it will descend vertically due to the tape loading mechanism mounting it on the cylinder 5, but even during this descending, it will reach the prescribed position in the adsorbed state and after the descent is completed. The tape 4 that has been adsorbed may come off from the lid 3. For this reason, in this state, the tape 4 peeled off from the lid runs on the upper surface of the cylinder 5, and there is a disadvantage that the tape cannot be wound around the cylinder by good tape loading.

[0012]

[Problems to be solved by the device]

 As described above, in the conventional cassette loading device, when the cassette tape is loaded in the cassette type VTR, the cassette lid is rotated by the lid opener of the cassette loading device to open. If there is slack in the tape, it will be adsorbed to the lid due to the static electricity of the lid, and it may even get on the cylinder. This causes the inconvenience that the coil cannot be wound around the cylinder.

Therefore, the present invention has been made in view of the above problems. Therefore, when a cassette tape is attached to a cassette type VTR, slack of the tape occurs and the tape is attracted by static electricity of the lid. Also, it is an object of the present invention to provide a cassette mounting device that can guide a tape position to a suitable cylinder without riding on the cylinder.

[0014]

[Means for Solving the Problems]

 A cassette loading device according to the present invention is provided inside a magnetic recording / reproducing device and accommodates a tape cassette equipped with a cassette lid and conveys the tape cassette to a predetermined position, and the tape cassette accommodated in the cassette holder. And a lid opener that is rotatably attached to the cassette lid and is provided inside the magnetic recording / reproducing apparatus, and the cassette holder moves to a predetermined position to engage with the lid opener. A lid opener driving member that opens the lid opener and at the same time opens the cassette lid of the tape cassette that engages with this lid opener, and a lid opener that causes the lid opener to project in the tape direction of the tape cassette when the lid opener is open. And a tape guide member provided.

[0015]

[Action]

 In the present invention, when the tape is attracted to the cassette lid opened by the front lid opener due to the influence of static electricity, etc., the tape is guided to the normal tape position when sliding from the cassette lid. be able to.

[0016]

【Example】

 Examples will be described with reference to the drawings. FIG. 1 shows an embodiment of a cassette mounting device according to the present invention. FIG. 1 (a) is a perspective view showing a structure in which a cassette is stored in the device and a lid is closed, and FIG. FIG. 6 is a perspective view showing a configuration in which a lid is opened by a lid opener of the device.

As shown in FIGS. 1A and 1B, the cassette mounting device 10 includes a cassette holder 11a and 11b for accommodating a cassette tape body 20, and a surface of the cassette holder 11a and 11b facing the lid of the cassette 20. It is attached to the side so as to rotate about a shaft portion 13 as a fulcrum, covers the lid 21 of the cassette, and locks the lid 21 of the cassette 20 with a lid locking claw portion 12b formed at one end. The front lid opener 12 is configured to open the lid 21 by rotating the lid 21. Further, a tape guide member 12a capable of preventing the tape from jumping out, which is a feature of this embodiment, is formed on the lower side near the center of the front lid opener 12.

Further, the lid opener driving member 30 provided in the internal mechanism of the VTR is configured to rotate the front lid opener 12 of the cassette mounting apparatus 10 upward. Further, although not shown, the cassette mounting device 10 is provided with a lock release mechanism for releasing the lid lock of the cassette 20. The lid lock mechanism of the cassette is usually provided with a lock release button. For example, the lock release mechanism can be locked by pushing or moving the lock release button by inserting the cassette 20 into the cassette holders 11a and 11b. Is configured to release. The cassette mounting device 10 having such a structure is usually disposed inside a cassette type VTR, and is moved in a horizontal direction and a vertical direction by a drive mechanism (not shown), and by this movement, the cassette is conveyed to a predetermined position inside the VTR. You can do it.

Further, as shown in FIG. 1A, for example, when the cassette body 20 is stored, the lid 21 of the cassette 20 is in a closed state, and thereafter, the cassette mounting device 10 storing the cassette body 20. Is conveyed in the direction of arrow D (arrow in the figure) as shown in FIG. 1B, that is, when the cassette is stored in the apparatus shown in FIG. Then, in order to wind the tape around the cylinder by the tape loading mechanism, the tape is vertically lowered to a predetermined position inside the VTR. At this stage, as described above, the front opener 12 of the cassette mounting apparatus 10 is moved by the lid opener driving member 30 provided inside the VTR so that the shaft portions of the cassette holders 11a and 11b are rotated as shown in FIG. 1 (b). The front lid opener 12 is rotated and lifted, and at the same time, the lid locking claw portion 12b provided on the front lid opener 12 locks the cassette lid 12 of the cassette 20 and rotates the front opener 12 at the same time. With the movement, the cassette lid 21 is opened so that the tape 22 can be exposed.

Further, since the tape guide member 12 a is also formed on the front lid opener 12, the tape guide member 12 a is configured to rotate together with the front lid opener 12.

Next, the operation of the cassette mounting device having such a configuration will be described in detail with reference to FIGS. 2 to 4. 2 to 4 are explanatory views for explaining the operation of the cassette loading apparatus according to the present invention. FIG. 2 is a view showing a tape track in a normal state at the stage of cassette loading, and FIG. 3 is a static charge of the cassette lid. FIG. 4 is a diagram showing a tape trajectory when the tape is attracted due to the influence, and FIG. 4 is a diagram showing a tape trajectory when the cassette loading apparatus of this embodiment is used.

First, in normal cassette loading by the cassette loading device, as shown in FIG. 2, for example, after the cassette body is housed, it is horizontally conveyed to a predetermined position and vertically lowered to a predetermined position inside the VTR. At this time, the cassette lid 21 is opened by the front lid opener 12, the tape of the cassette 20 is exposed in a state shown by the normal trajectory E of the tape, and is wound around the cylinder 50 by a tape loading mechanism (not shown). It is like this.

However, in the case of using the cassette mounting device as the prior art, as shown in FIG. 3, when the cassette lid 21 is opened by the front lid opener 12 of the cassette mounting device, the electrostatic discharge of the cassette lid 21 is prevented. Under the influence of the above, there is a problem that the tape 22 is adsorbed on the inner side surface of the cassette lid 21, and the tape 22 rides on the upper surface of the cylinder 50 in the state shown by the trajectory F of the tape.

Therefore, in order to solve such a problem, in this embodiment, the tape is shown in FIG. 3 by providing the tape guide member 12a below the center of the front opener 12 for opening the cassette lid 22. Instead of making such a tape track F, the tape is mounted at a normal tape position.

This is because when the tape 22 is attracted to the cassette lid 12 due to the influence of static electricity or the like of the cassette lid 21 as shown in FIG. 3 and is vertically lowered in this state, for example, as shown in FIG. As shown in FIG. 5, the tape 22 sliding down from the cassette lid 21 is mounted by the tape guide member 12a so as to be guided to the normal tape position G.

In other words, even when the tape 22 is attracted to the inside of the cassette lid 21 due to the static electricity of the cassette lid 21 when the cassette loading device 10 descends in the vertical direction, the tape guide member The tape can be mounted so that the tape path F shown in FIG. 3 is blocked by 12a and the tape sliding down from the cassette lid 21 is guided so that the tape path becomes normal. As a result, the tape 22 can be pulled out from the cassette by the tape loading mechanism and can be normally wound around the cylinder 50.

Therefore, according to the present embodiment, by providing the tape guide member 12a on the lower side in the vicinity of the center of the front lid opener 12 of the cassette device device 10, static electricity or the like of the cassette lid is attached when the cassette is mounted. Even if the tape is sucked due to the influence of the above, it is possible to prevent the tape from riding on the cylinder head due to slipping from the cassette lid and to mount the tape at the normal tape position.

In the present embodiment, it may be used in a cassette loading device of a VTR equipped with various tape loading mechanisms, and a β system, a VHS system, an 8 mm VTR, a digital audio tape recorder (DAT), etc. It is of course possible to obtain the effect when it is used in a cassette mounting device using various types of cassettes, and it is of course possible to obtain the effect in all cassette type magnetic recording / reproducing devices.

[0029]

[Effect of device]

 As described above, according to the present invention, when the cassette is mounted on the magnetic recording / reproducing apparatus, even if the tape is adsorbed by the influence of the static electricity of the cassette lid, the tape can be mounted on the cylinder. It can be installed in the normal tape position without performing.

[Brief description of drawings]

FIG. 1 is a perspective view showing the configuration of an embodiment of a cassette mounting device according to the present invention.

2 to 4 are explanatory views for explaining the operation of the cassette loading device shown in FIG. 1, and FIG. 2 is a diagram showing a tape trajectory in a state where a cassette is loaded normally.

FIG. 3 is a diagram showing a trajectory of the tape in a state where the guide panel is attracted by static electricity when the cassette is mounted.

FIG. 4 is a diagram showing a state in which the locus of the tape shown in FIG. 3 is improved by this embodiment.

FIG. 5 is an explanatory diagram illustrating an operation of a conventional cassette mounting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Cassette mounting device 11a, 11b ... Cassette holder 12 ... Front lid opener 12a ... Tape guide member 12b ... Lid locking claw portion 13 ... Rotating shaft part 20 ... Cassette body 21 ... Lid 22 ... Tape 30 ... Lid opener drive member

Claims (1)

[Scope of utility model registration request] 1. A cassette holder provided inside a magnetic recording / reproducing apparatus for accommodating a tape cassette equipped with a cassette lid and conveying it to a predetermined position, and a cassette lid of the accommodated tape cassette in the cassette holder. A lid opener that is engaged and rotatably attached is provided inside the magnetic recording / reproducing apparatus, and the cassette holder moves to a predetermined position to engage with the lid opener and open the lid opener. A lid opener driving member that simultaneously opens the cassette lid of the tape cassette that engages with the lid opener, and a tape provided on the lid opener so as to project in the tape direction of the tape cassette when the lid opener is open. A cassette mounting device comprising: a guide member.