JPS61237253A - Tape loader - Google Patents

Abstract

PURPOSE:To use one driving source, to simplify a construction and to make compact by transmitting a relative movement of a cassette substrate performed when the cassette is returned to a playing position to operate an arm and pulling out a magnetic tape from the cassette by the arm. CONSTITUTION:When a cassette substrate 3 is separated from a rotary drum 2, the cassette is mounted on the substrate 3. Then, a motor not shown in figure is driven, the substrate 3 or the substrate 1 is relatively moved manually with respect to the other. At this time, a pin 5 of the substrate 3 is guided to a long hole 4 of the substrate 1. With the movement of the substrate 3, a pin 13 moves to an inside along a cam groove 7, an arm 9 rotates clockwise and a magnetic tape is pulled out from the cassette by a guide 12. Similarly, a pin 17 moves to the inside along a cam groove 8, an arm 14 rotates counterclock wise and the magnetic tape is pulled out from the cassette. In this way, only one of driving source is used and the construction is simplified and made com pact.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tape loading device for a cassette video tape recorder or the like.

[Summary of the invention]

The present invention relates to a tape loading device that winds a magnetic tape housed in a cassette around the outer periphery of a rotating drum on which a rotating head is attached. A cassette board is provided that is movable relatively to the cassette, and when the cassette is moved to the performance position, the relative movement between the board and the cassette board is used to pull out the magnetic tape from the cassette, and also to move the magnetic tape around the outer circumference of the rotating drum. The structure is simplified by winding the wire around the ends of the windings.

[Conventional technology]

In cassette video tape recorders, etc., the magnetic tape is housed in the cassette, so the cassette is moved to the playing position, the magnetic tape is pulled out from the cassette, and it is wound once around the outer circumference of the rotating drum on which the head is attached. A so-called tape loading operation is required. In conventional cassette video tape recorders, the magnetic tape is pulled out from the cassette by, for example, rotating an arm using a motor or the like. Further, the winding operation on the rotary drum was performed by rotating a loading ring rotatably provided on the outer periphery of the single-rotation drum using a motor.

[Problem that the invention seeks to solve]

In this way, in conventional devices, each operation such as moving the cassette to the playing position, pulling out the magnetic tape, and winding it around the rotating drum is performed separately and independently, making the device complex and large. Not only is it expensive, but it also has the drawback of being expensive. Therefore, it has recently been standardized. It has been difficult to apply this method to so-called 8-inch video tape recorders, which are characterized by being smaller than 172-inch video tape recorders.

[Means for solving problems]

1 and 2 show the configuration of a tape loading device according to the present invention. In the figure, reference numeral 1 denotes a substrate, and a rotating drum 2 on which a rotating head (not shown) is mounted is attached. Reference numeral 3 designates a cassette board on which a cassette is mounted, which has a plurality of pins 5 that fit into a plurality of long holes 4 formed in the board 1, and is movable relative to the board 1. 6 is a capstan attached to the substrate 1, and 7.8 is a cam groove formed in the substrate 1.

Reference numeral 9 denotes an arm, which is rotatably supported on a fulcrum 10 of the cassette board 3. The arm 9 has a pinch roller 11, a guide 12 for pulling out the magnetic tape, and a pin 13 that fits into the cam groove 7 of the substrate 1. An arm 14 is rotatably supported on a fulcrum 15 of the cassette board 3, and has a guide 16 for pulling out the magnetic tape and a pin 17 that fits into the cam groove 8 of the board 1. Guide plates 18 and 19 are fixed to the substrate 1 on the outer periphery of the rotating drum 2 in a substantially bilaterally symmetrical manner, each having guide grooves 20 and 21. 22 and 23 are movable tables, and guide plates 18 and 19 respectively.
The rotating drum 2 is guided by guide grooves 20 and 21 of
It can be moved freely around the periphery of. Rotating drum 2 is substrate 1
Since the guide plates 18, 19 are provided at a predetermined angle with respect to the substrate 1, the guide plates 18, 19 are provided parallel to the substrate 1 (of course, the reverse direction is also possible). The moving platform 22.23 is
They each have rotating guide rollers 24, 25 and guide poles 26, 27 inclined at a predetermined angle. 28,
29 and 30.31 are links provided to transmit the relative motion between the substrate 1 and the cassette substrate 3 to the movable tables 22, 23, and are rotatably connected to each other at shafts 32.33. . 34.35 are pins provided on the cassette board 3, and holes 45.4 of the links 28.29.
6 and elongated holes 36 and 37 of the substrate 1, respectively.

Small slots 38, 39 are provided in each link 28, 30, into which pins 40 fit. The pin 40 also fits into a small elongated hole 41 in the substrate 1. 42 is a spring, one end of which is connected to the pin 40, and the other end of which is connected to the substrate 1. 43 and 44 are reel stands provided on the cassette board 3.

[Effect]

The effect will now be explained. As shown in FIG. 1, the cassette is mounted on the cassette substrate 3 in a state where the cassette substrate 3 is separated from the rotating drum 2. In the state before such loading is started, the guide 12.16
, the magnetic tape is positioned between the pinch roller 11° guide rollers 24, 25, guide poles 26, 27, etc. and the rotary drum 2. The magnetic tape is positioned between the rotating drum 2, the pinch roller 11°, the guide rollers 24, 25, and the guide poles 26, 27, etc. by driving a motor (not shown) or by manual operation. Moving the cassette substrate 3 or the substrate 1 relative to the other (for example, moving the cassette substrate 3 upward in the figure), at this time the pins 5 of the cassette substrate 3 are guided by the long holes 4 of the substrate 1,
The movement is smooth.

On the substrate 1, the cam groove 7 is formed on the inner side (left side) going upward in FIG. Therefore, the cassette board 3
As the pin 13 moves along the cam groove 7, the pin 13 moves inside (
(to the left), the arm 9 rotates clockwise. As a result, the magnetic tape is pulled out from the cassette by the guide 12.

Similarly, as the cassette board 3 moves, the pin 17
moves inward (to the right) along the cam groove 8, so the arm 14 rotates counterclockwise and the magnetic tape is pulled out from the cassette.

On the other hand, when the force setting board 3 moves, the elongated hole 36 of the board 1.
37 along pins 34, 35 (therefore links 28, 29
．． 30.31) moves upward.

The pin 40 moves slightly upward in the small elongated hole 41 of the board 1, but the spring 42 whose other end is fixed to the board 1 prevents this movement, so that the connection part of the link 28.30 by the pin 40 does not move. You will no longer be able to move upwards. Therefore, when the cassette board 3 is further moved upward, the pins 40
The link 28 moves counterclockwise with the link 30 as the fulcrum.
rotate clockwise. At this time link 28.30
Since each has a small elongated hole 38 and 39,
Rotation is not hindered, so that links 29 and 3
1 presses the connected moving tables 22 and 23 upward, and the moving stands 22 and 23 are guided by the guide plates 18 and 19 and move upward. As a result, as shown in FIG. 2, guide rollers 24, 25,
The magnetic tape is wound around the rotating drum 2 approximately symmetrically by the guide poles 26 and 27 (of course, by appropriately selecting the position of the movable base 22 and 23 (that is, the position of the guide plate 18 and 19 ff1)) When the cassette board 3 moves upward, the pin 40 resists the urging force of the spring 42 and closes in the small elongated hole 4 of the board 1.
Move slightly upwards within 1. As a result, the pin 40 is urged downward by the spring 42 with a stronger force, and the link 2
8.3o is rotated counterclockwise and clockwise using the pins 34 and 35 as fulcrums, so the movable base 2
2.23 is pressed against the upper end of the guide plate 18.19 and positioned accurately. When the cassette board 3 moves the cassette to this playing position, the arm 9 rotates significantly clockwise, and the pinch roller 11 presses the magnetic tape against the capstan 6. Therefore, the magnetic tape can be run by the capstan 6 and the pinch roller 11.

In the above description, the pulling out operation and the winding operation of the magnetic tape are performed by separate members, but they can also be performed by the same member. Further, the relative movement between the substrate 1 and the cassette substrate 3 may be not the linear movement as described above, but may be a rotational movement or a combination thereof.

〔effect〕

As described above, in the present invention, a tape loading device that winds a magnetic tape housed in a cassette around the outer periphery of a rotating drum on which a rotating head is attached is provided.
A substrate on which a rotating drum is attached and a cassette substrate on which a cassette is attached and are movable relative to the substrate are provided, and the relative movement between the substrate and the cassette substrate is utilized when moving the cassette to a performance position. Since the magnetic tape is pulled out from the cassette and wound around the outer periphery of the rotating drum, only one drive source is required, resulting in a simplified structure, smaller size, and lower cost. can.

[Brief explanation of drawings]

FIG. 1 is a plan view of the tape loading device of the present invention when loading is started, and FIG. 2 is a plan view of the tape loading device when loading is completed. 1... Board 2... Rotating drum 3... Cassette board 4.36.37.38.39.41... Long hole 5.13
．． 17.34.35.40.45.46...Pin 6...Capstan 7.8...Cam groove 9.14
... Arm 10.15 ... Fulcrum 11 ... Pinch roller 12.16 ... Guide 18.19 ... Guide plate 20.21 ... Guide groove 22.23 ... Moving table 28. 29.30.31...Link 42...Spring or more

Claims (2)

[Claims] (1) In a tape loading device that winds a magnetic tape housed in a cassette around the outer periphery of a rotating drum on which a rotating head is attached, a substrate on which the rotating drum is attached and the cassette are attached, A cassette substrate movable relative to the substrate, and an arm provided on either the substrate or the cassette substrate, and the cassette substrate is moved relative to the cassette substrate when the cassette is moved to a performance position. A tape loading device characterized in that the arm is operated by transmitting motion, and the arm pulls out the magnetic tape from the cassette. (2) In a tape loading device that winds a magnetic tape housed in a cassette around the outer periphery of a rotating drum on which a rotating head is attached, a substrate on which the rotating drum is attached and the cassette are attached, A cassette substrate movable relative to the substrate, and a moving table movable around the outer periphery of the rotating drum, the cassette substrate being moved relative to the substrate when the cassette is moved to a performance position. A tape loading device characterized in that the movable stage is moved to the outer periphery of the rotary drum by transmitting relative motion, and the magnetic tape is wound around the outer periphery of the rotary drum by the movable stage.