JPH0221455A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To attain the miniaturization and thinning of a device by providing a loading guide to guide a post holder along a prescribed path. CONSTITUTION:A guide pin 27 is studded integrally with a turning arm 13, and the guide pin 27 is moved advancing a rotary cylinder 2 with a cassette 1. And before loading is completed, the motion of a turning arm 56 is regulated by a spring 58 and a stopper 59, and when a second post holder 9 arrives at a prescribed position by rotating a loading ring 4 in a counterclockwise direction, the motion of the loading ring 4 is stopped. A loading operation can be performed by arranging only the loading 4 to turn the post holders 8 and 9 in the periphery of the rotary cylinder 2 without providing another loading mechanism part. In such a way, it is possible to miniaturize and thin the device.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a magnetic recording and reproducing apparatus such as a video tape recorder having a tape ejecting mechanism.

BACKGROUND OF THE INVENTION In recent years, there have been magnetic recording and reproducing devices such as camera-integrated video tape recorders that incorporate a camera, but these devices are becoming smaller due to market demands.

The conventional magnetic recording/reproducing apparatus as described above will be explained below with reference to FIG.

Figure 4 shows a plan view of a conventional magnetic recording and reproducing device.
In the figure, 1 is a cassette, 2 is a rotating cylinder provided with magnetic heads 3a to 3d, 4 is a loading ring, and 5 &~
6C are the first . Second. The third post, 6a to 6f are tape guide posts, 7 is a rod,
8 and 9 are first and second post holders, 10 is a ring roller, and 11 is a loading motor, which rotates the worm 12. 13 is a rotating arm that rotates with the rotation of the worm 12, 14.15 is a transmission gear, 16 is a magnetic tape, 1
7 is a first substrate, 18 is a tape supply reel, 19 is a tape take-up reel, 20 is a tension post that applies a predetermined tension to the magnetic tape 16, 21 is a tension arm, 22 is a tape guide post arm, and 23 is a rotating The tape guide boss arm 22 rotates around the fulcrum. 24 is a guide, 25 is a guide groove, 26 and 27 are cam bins, 28 is a tension post release cam, 29 is a cam bin installed on the tension arm 21, 3o is a rotation fulcrum of the tension arm 21, 31 is a loading guide, 32 Loading guide 5133 is the first loading arm, 34 is the first gear, 35 is the second gear, 3
6 is a rotating shaft, 37 is a third gear, 38 is a compression spring, 39 is a pinch roller, 40 is a capstan, 41 is a pinch arm, 42 is a rotating shaft, 43 is a cam groove, 44 is a stopper, 45 is a plate A spring 46 is a loading plate that can slide along the ring bins 47 and 48 provided on the loading ring 4, and a crimping spring 49 has one end fixed to the loading ring 4 and the other end fixed to the loading plate 46. be.

The operation of the conventional magnetic recording/reproducing apparatus configured as described above will be described below.

First, when the loading motor 11 is rotated to pull out the magnetic tape 16 from the cassette 1, the rotational force is applied to the worm 121, the rotation arm 13. This is transmitted to the transmission gears 14, 15 and the loading ring 4, and the loading ring 4 rotates in the direction of arrow a in FIG. At this time, the second post holder 9 wraps the magnetic tape 16 around the rotary cylinder 2 at a predetermined angle and moves to the position shown in FIG. At this time, the loading ring 4 is further moved by the arrow &
When the second post holder 9 is about to rotate in the direction shown in FIG. Finish the loading operation.

Problem to be Solved by the Invention 2 However, in the above-mentioned conventional configuration, when trying to make the entire device smaller and thinner, in order to position the post holder, the loading plate 46 and the pressure spring 49 are attached to the loading ring 4. , the thickness in the height direction increases, making it more compact.

The problem was that it was difficult to make it thin.

In view of the above, an object of the present invention is to provide a magnetic recording/reproducing device that can be easily made smaller and thinner.

Means for Solving the Problems In order to achieve the above object, the present invention provides a substrate to which a rotating cylinder is attached, a first post for pulling the magnetic tape out of the cassette and winding it around the rotating cylinder, and a post for holding the first post. a holder, a loading guide formed on the substrate to guide the post holder, a movable substrate that transfers the cassette in the direction of the rotating cylinder in conjunction with the winding operation of the post, a drive means that transfers the movable substrate, and a movable substrate that A gear man fixedly provided, a gear B that meshes with the gear m and rotates around the first rotation axis on the board, and a rotation that meshes with the gear B and rotates around the first rotation axis. A gear C that rotates around a second rotation axis provided on the movable arm, a gear that is integrated with the gear C and rotates around the second rotation axis, and a gear that meshes with the gear and rotates the first rotation. The gear E rotates around the shaft, and the gear E is integrated with the
A loading ring that meshes with the gear F that rotates around a first rotation axis, a rod that rotates around a third rotation axis that is provided on the loading ring, and a fourth rotation axis that is provided on the rod. a second post holder that rotates around a moving axis; a second post that is provided on the second post holder and wraps a magnetic tape around a rotating cylinder; one end is fixed to the rotating arm, and the other end is fixed to the rotating arm; The device is configured to include a spring fixed to the substrate, and a regulating member provided on the substrate for regulating the movement of the rotating arm around the first rotating shaft during the magnetic tape drawing operation.

Effect of the Invention With the above-described configuration, the present invention disposes only the loading ring that rotates the post holder around the rotating cylinder, and allows the loading operation to be performed without providing other loading mechanism parts on the loading ring. Therefore, the device can be made smaller and thinner.

EMBODIMENT A magnetic recording/reproducing apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

1 and 2 are schematic plan views of a magnetic recording/reproducing apparatus according to an embodiment of the present invention. FIG. 1 shows the state after loading is completed, and FIG. 2 shows the state before loading.

In each figure, the same parts as in Figure 4 are given the same numbers.
The explanation will be omitted.

First, the loading operation will be explained using FIG. 2. In Figure 2, from cassette 1 to magnetic tape 1
6, the loading motor 11 is rotated and the worm 12 is rotated. The rotating arm 13 has a gear that meshes with the worm 12, and as the worm 12 rotates, the rotating arm 13 rotates in the direction indicated by the arrow.

A guide pin 27 is integrally installed on this rotating arm 13, and this guide pin 27 is used when the second board 50 moves from the arrangement state shown in FIG. 2 to the arrangement state shown in FIG. Then, it moves toward the rotating cylinder 2 together with the cassette 1 fixed on the second substrate 5o.

This second substrate 60 has a fourth gear 6 integrally formed therein.
1 and moves in the direction of the rotating cylinder 2 during loading.

Due to the movement of the fourth gear 61, the fifth gear 62 that meshes with the fourth gear 61 rotates clockwise.

The sixth gear 63 meshes with the fifth gear 62 and rotates counterclockwise.

The seventh gear 54 is formed integrally with the sixth gear 63, and the sixth gear 63 and the seventh gear 54 rotate counterclockwise around the rotating shaft 55. This rotating shaft 66
is further integrated with the rotating arm 68, and furthermore,
The rotating arm 66 can rotate around the rotating shaft 67. The rotating shaft 67 is integrated with the first substrate 1T.

As shown in FIG. 2, in a state where loading is not completed, movement of the rotating arm 66 is restricted by a spring 68 and a stopper 69.

The eighth gear 60 meshing with the seventh gear 64 rotates clockwise, and the ninth gear 61 rotates clockwise together with the eighth gear 6°.

The loading ring 4 meshes with the ninth gear 61,
It rotates counterclockwise along two ring rollers 10.

A rod 7 is connected to the loading ring 4 via a rotating shaft 62.
is attached to the rod 7, and a second post holder 9 is attached to the rod 7 via a rotating shaft e3.

As the loading ring 4 rotates counterclockwise, the loading ring 4 stops moving when the second post holder 9 reaches a predetermined position shown in FIG.

At this time, the eighth gear 60, which rotates together with the ninth gear e1, the ninth tooth, and the wheel 61, which are engaged with the loading ring 4, also stops rotating. At this time, the fourth gear 6
1 moves, and when the fifth gear 52 meshed with the fourth gear 51 is rotated clockwise, the sixth gear 53 meshed with the fifth gear 52 and the sixth gear 63 rotate together. Since the eighth gear 60 is fixed, the seventh gear 64 rotates clockwise together with the rotating arm 66 about the rotating shaft 57.

At this time, the spring 58 is in an extended state and the loading is completed, and the tension force is stored in the spring 68. As a reaction force of this pulling force, the second post holder 9 is in a crimped state at a predetermined position shown in FIG.

In the unloading operation, the series of operations shown above is reversed, and the unloading operation is completed.

As described above, the magnetic tape 16 pulled out from the cassette 1 is wound around the rotary cylinder 2 at a predetermined angle by the first boss) 52L and the second boss) 5b, and
The winding is released and the tape is pulled back into the cassette 1, and loading and unloading operations are performed.

Effects of the Invention As described above, according to the present invention, only the loading ring that rotates the post holder is arranged around the rotating cylinder, and the loading operation can be performed without providing any other loading mechanism parts on the loading ring. The area and thickness occupied by the loading mechanism for pulling out the magnetic tape from the cassette around the rotating cylinder can be reduced, and the device can be made smaller and thinner.

[Brief explanation of the drawing]

1 and 2 are plan views of a magnetic recording/reproducing apparatus according to an embodiment of the present invention, FIG. 3 is a side sectional view of the same essential parts, and FIG. 4 is a plan view of a conventional magnetic recording/reproducing apparatus. 1... Cassette, 2... Rotating cylinder, 3... Magnetic head, 4... Loading ring, 6a... First boss ), sb...
...Second boss), 50...Third boss),
Sa~6f...Tape guide post, 7...
...Rod, 8...First post holder, 9
...Second post holder, 10...Ring roller, 11...Loading motor, 1
6. River: magnetic tape, 17: first substrate,
18... Tape supply reel, 19...
Tape take-up reel, 2o...Tension post, 21...-Tension arm, 34...
・First gear, 36...Second gear, 36...
...Rotating shaft, 37...Third gear, 61.
...Fourth gear, 62...Fifth gear,
63...6th gear, 64...7th gear, 66...rotating shaft, 66...rotating arm, 67... ... Rotating shaft, 58 ... Spring, 69 ... Stopper 60 ... Mark - 8th gear, 61 ... 9th gear, 62 ... Rotation axis, 63...Rotation axis.

Claims (1)

[Claims] a first post for pulling the magnetic tape out of the cassette from a cassette containing a substrate to which a rotating cylinder with a magnetic head is attached, and a reel wound with magnetic tape, and winding the magnetic tape around the rotating cylinder; a first post holder for holding a post, a movable substrate for transferring the cassette in the direction of the rotating cylinder in conjunction with the winding operation of the first post, a driving means for transferring the movable substrate; A gear A fixedly provided on a substrate, a gear B that meshes with the gear A and rotates around a first rotation axis on the substrate, and a gear B that meshes with the gear B and rotates around the first rotation axis. A gear C that rotates around a second rotation axis provided on a rotating rotation arm, a gear D that is integrated with the gear C and rotates around the second rotation axis, and a gear D that rotates around the second rotation axis. a gear E that meshes with the gear E and rotates around the first rotation axis; a gear F that is integrated with the gear E and rotates around the first rotation axis; a loading ring that meshes with the gear F; and the loading ring. a rod that rotates around a third rotation axis provided above;
a second post holder that rotates around a fourth rotation axis provided on the rod; and a second post holder that is formed on the substrate and guides the first and second post holders along a predetermined path. a second post holder provided on the loading guide and the second post holder and winding the magnetic tape around the rotating cylinder;
a post fixed to the pivot arm at one end and a spring fixed to the substrate at the other end; and a regulating member that regulates movement around the first rotation axis.