JPH0215449A - Tape loading device - Google Patents

Abstract

PURPOSE:To stabilize a tape running system and to facilitate the design of a tape loading device by securing the relative position relation between a rotary cylinder and oblique/vertical tape guides without changing regardless of the action of tape loading. CONSTITUTION:In a condition in which a tape cassette 30 is fitted on a substrate 2, vertical can oblique tape guides 7 and 8 are positioned in an aperture part 30A of the cassette 30, and vertical and oblique tape guides 10 and 9 are positioned to a position opposite to the cassette 30 over a rotary cylinder 4. When the tape loading starts by the device, a cylinder base 1 turns in an A direction, the guides 7 and 8 are made contact with it from a non-magnetic surface side of a magnetic tape 31, moves while engaging with the base 1, and the tape 31 is pulled from the inside of the cassette 30. On the other hand, a pinch roller arm 20 turns in a B direction, the guides 10 and 9 move in the direction opposite to the moving direction of the tape 31, and move while making contact with the tape 31 from the magnetic surface side of the tape 31 during the action.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to, for example, a magnetic recording/reproducing device having a rotating cylinder such as a video tape recorder, in which a magnetic tape built in a tape cassette is pulled out of the tape cassette and the The present invention relates to a tape loading device for winding around the outer circumference of a rotating cylinder.

2. Description of the Related Art Conventionally, video tape recorders or digital audio tape recorders, which are helical scan type magnetic recording and reproducing devices, have been used, for example, to arrange a rotating cylinder on a fixed drum, and to rotate the rotating cylinder at high speed to which a rotating magnetic head is attached. In addition, a magnetic tape has been put into practical use in which a magnetic tape is wound and run at an angle around the outer periphery of the fixed drum, and signals are recorded and reproduced by the rotating magnetic head. That is, in such video tape recorders and digital audio tape recorders, by rotating the rotating cylinder at high speed, the relative speed between the rotating magnetic head and the magnetic tape is increased, and an inclined recording track is created. By doing so, high-density recording was achieved.

There are many different tape loading methods in such magnetic recording and reproducing devices, but in all cases, a moving member for tape loading reciprocates to transport the magnetic tape and wind it around a rotating cylinder. For example, Japanese Patent Application Laid-Open No. 62-29525
Examples include Publication No. 3.

As a typical method of tape loading in the magnetic recording and reproducing apparatus, an example of the conventional tape loading apparatus mentioned above will be described.

FIG. 4 shows a perspective view of a conventional tape loading device. In FIG. 4, a tape cassette 101
has a built-in magnetic tape IQ4 wound between a pair of reels 102 and 103.

The rotating cylinder 105 has a rotating magnetic head (not shown) on its outer periphery. Drive gears 106 and 107 are rotatably provided to pins 108 and 109 that are set on the mechanical chassis of the magnetic recording/reproducing apparatus and always engage with each other, and are rotated by a loading motor (not shown). Receive power. Loading lever 110.111i
d one end is provided coaxially with the drive gear,
The other end is a free end on which link levers 112 and 113 are rotatably supported. In addition, the link lever 112.1
Inclined bases 114 and 115 are rotatably supported at the other end of 13. The inclined paces 114 and 115 include vertical tape guides 116° 117 and inclined tape guides 118 for tape loading.
119 is engaged.

The operation of the conventional tape loading device configured as described above will be described below.

As the loading motor rotates, drive gear 1
06 and 107 begin to rotate in the directions of the arrows, and accordingly, the pair of loading levers 110° and 111 also rotate in the directions of the arrows. And link levers 112, 113
The magnetic tape 104 is removed from the tape cassette 101 by sliding in the direction of the broken line until the inclined bases 114 and 115 are pressed against the stoppers 120 and 121, respectively.
The magnetic head is pulled out and wound around a rotating cylinder, and recorded and reproduced using a rotating magnetic head.

Problems to be Solved by the Invention However, in the above configuration, since the vertical tape guide and the inclined tape guide that make up the magnetic tape running system move, it is difficult to ensure the positional accuracy and posture accuracy of the tape guide when loading is completed. It is extremely important to do so. For this reason, in the past, highly precise parts such as stoppers and inclined bases were required, and the drive system that crimped these parts had to be powerful as well. Further, since the components such as each lever are disposed under the tape cassette, there is a problem in that the structure of the reel stand and reel drive mechanism is subject to restrictions.

In view of the above problems, the present invention provides a tape loading device that has a simplified configuration and does not require high accuracy.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention has a cylinder base rotatably provided on a substrate that supports a tape cassette containing a magnetic tape, and a stationary drum fixed on the cylinder base. A rotating cylinder is placed on a fixed drum, and when a tape cassette is installed,
It is located on the non-magnetic side of the magnetic tape, and as the cylinder base rotates, it engages with the magnetic tape and pulls it out of the tape cassette. At the tape loading completion position, the magnetic tape runs parallel to the substrate. At least one inclined tape guide and one vertical tape guide are guided to the rotating cylinder while running at an angle with respect to the substrate, and when a tape cassette is installed, the tape guide is positioned on the magnetic surface side of the magnetic tape and rotates at the cylinder pace. at least one inclined tape guide that engages with the magnetic tape and causes the magnetic tape, which is guided by a rotary cylinder and runs at an angle to the substrate, to run parallel to the substrate at the tape loading completion position; This tape loading device is configured such that a vertical tape guide is arranged around a rotating cylinder and is planted on the cylinder pace.

Effect of the present invention With the above configuration, tape loading can be completed by simply rotating the cylinder base from the state in which the tape cassette is attached, and the relative positional relationship between the rotating cylinder and the inclined tape guide and the vertical tape guide remains unchanged. Therefore, a stable tape running system is realized.

Embodiment Hereinafter, an embodiment in which the present invention is used as a tape loading device for a digital audio tape recorder will be described with reference to the drawings.

Figure 1 is a front view showing the tape cassette installed and before tape loading, Figure 2 is a front view showing the state after tape loading is completed, and Figure 3 is the front view of the tape cassette being loaded.
FIG. 2 is a side view showing the main parts of the loading device as seen from line MM in the figure. In each figure, 2 is a board that supports a tape cassette 30 containing a magnetic tape 31.

The magnetic tape 31 is substantially parallel to the substrate 2 in the state shown in FIG. 1 before tape loading. Reference numeral 1 denotes a cylinder base, which is supported on the upper surface of the substrate 2, and is driven to rotate about 70 degrees with the 0 point as the rotation center. 3 is a fixed drum, cylinder pace 1
is fixedly placed.

A lead 3 for guiding the magnetic tape 31 is provided on the outer periphery of the fixed drum 3. Reference numeral 4 denotes a rotating cylinder on which a magnetic head 5 is mounted, which is rotatably provided coaxially with the fixed drum 3 and is rotationally driven by a cylinder motor 8 . A vertical tape guide 7.10 and an inclined tape guide 8.9 are arranged around the rotating cylinder 4 so as to wrap around it, all of which are erected on the cylinder base 1. Of these, vertical tape guide 7
10 is substantially perpendicular to the substrate 2, and has two upper and lower flanges for regulating the running path of the magnetic tape 31. The inclined tape guides 8 and 9 are fixed bins that are inclined at a predetermined angle with respect to the substrate 2, and the inclined tape guide 8 allows the magnetic tape 31 running parallel to the substrate 2 to be inclined with respect to the substrate 2. The inclined tape guide 9 is guided to the rotating cylinder 4 while running.
The magnetic tape 31 is provided in order to cause the magnetic tape 31, which is guided by the rotary cylinder 4 and runs at an angle to the substrate 2, to run parallel to the substrate 2. Reference numeral 11 denotes a detection bottle installed at the tip of the arm 12 rotatably supported by the rotation center 24, and 13 is a detection bottle installed on the tip of the arm 14 rotatably supported by the rotation center 15. A roller bin is provided. Also, 17 is a pinch roller,
It is provided near the upper surface of the end of the pinch roller arm 20 which is rotatably supported by the rotation center 21, and on both sides, roller guide bins 16 and guide bins 19 are also installed on the upper surface of the pinch roller arm 2o. has been done.

18 is a capstan shaft, and a capstan motor 23
Rotationally driven by.

A roller bin 22 is installed on the upper surface of the substrate 2.

The operation of this embodiment configured as above will be described below.

First, the tape tension setting) 30 is attached to the board 2 (
In FIG. 1), a vertical tape guide 7 and an inclined tape guide 8 are located within the opening 30mm of the tape cassette 3°, and are vertically located at a position opposite to the tape cassette 3o across the rotating cylinder 4. A tape guide 1o and an inclined tape guide 9 are located. In other words, the vertical tape guide 7 and the inclined tape guide 8 are located on the non-magnetic side of the magnetic tape 31, and the vertical tape guide 1
0 and the inclined tape guide 9 are located on the magnetic surface side of the magnetic tape 31. When tape loading is started, the cylinder base 1 begins to rotate in the direction of arrow A, and the vertical tape guide 7 and the inclined tape guide 8 contact and engage with the magnetic tape 31 from the non-magnetic side. Therefore, the magnetic tape 31 is pulled out from inside the tape cassette 30. Meanwhile, the pinch roller arm 20 rotates in the direction of arrow B in accordance with the above operation, and the roller guide pin 16 and guide pin 19 move while engaging with the magnetic tape 31, and move the magnetic tape 31. Since the vertical tape guide 10 and the inclined tape guide 9 move in the opposite direction to the moving direction of the magnetic tape 31, they come into contact with the magnetic tape 31 from the magnetic surface side in the middle of their movement and engage with it. Moving. Further, the arm 14 rotates in the direction of arrow C after a slight delay from these operations.

As the loading operation progresses further, the magnetic tape 31
is wound around the outer periphery of the rotating cylinder 4 and the stationary drum 3. At this time, by rotating the cylinder base 1 in the direction of arrow A, the magnetic tape 31 is transferred to the fixed drum 3.
When the magnetic tape 31 is wound slightly above the lead 3A provided on the outer periphery of the lead 3A and the low reaching is completed, when the magnetic tape 31 is run, the lower end of the magnetic tape 31 is wrapped around the lead 3A. A state of sliding contact is realized. Therefore, the magnetic tape 31 is not damaged due to the tape loading being carried out while the magnetic tape 31 is on top of the three leads.

Finally, the cylinder base 1 stops at a position where the magnetic tape 31 is wrapped approximately 90 degrees around the outer periphery of the rotary cylinder 4 and fixed drum 3, as shown in FIG. At this time, the pinch roller arm 20 rotates to a position where the pinch roller 17 is pressed against the capstan shaft 18, and the magnetic tape 31 engages with the roller pin 22. The arm 14 also rotates to a predetermined position where the roller bin 13 engages with and guides the magnetic tape 31. An arm 12 is provided between the roller bin 13 and the vertical tape guide 7.
The detection pin 11 reaches the detection pin 11 by the rotation of the magnetic tape 31, and is engaged with the magnetic tape 31 by a predetermined pressure from the magnetic surface side.

As described above, in this embodiment, only the portion of the magnetic tape 31 on the tape running path from the inclined tape guide 8 to the inclined tape guide 9 via the rotary cylinder 4 runs at an angle with respect to the substrate 2. Therefore, the tape running path from inside the tape cassette 30 to the inclined tape guide 7 and from the inclined tape guide 9 to the tape cassette 3o
The portion of the magnetic tape 31 on the tape running path leading to the inside runs substantially parallel to the substrate 2. Therefore, all members such as tape guide members and rotating shafts arranged other than 1 on the cylinder base 1 may be arranged perpendicularly to the substrate 2, which facilitates the design. In addition, for regulating the running posture and position of the magnetic tape 310,
Since the inclined tape guides 8, 9 and the vertical tape guide 7.1o are all provided on the cylinder pace 1, no matter how the cylinder base 1 is rotated, the relative position of the tape guides to the rotating cylinder 4 and the stationary drum 3 will remain unchanged. remains unchanged, and a stable tape running system can be obtained.

Furthermore, the final positional accuracy of the cylinder base 1 does not need to be as high as conventionally required for inclined tape guides or vertical tape guides. This is because the inclined tape guide 8.9 and the vertical tape guide 7.10 are dominant for regulating the running attitude and running position of the magnetic tape 31.
Therefore, it is considered that the tape guide member located closer to the tape guide 30 than these tape guides on the tape running path, the inclined tape guides 8 and 9 and the vertical tape guides 7 and 10 will not affect the running performance of the magnetic tape 310. This is because it will be done. Therefore, the means (not shown) for stopping and holding the cylinder base 1 at a predetermined position can be simplified.

Effects of the Invention As described above, according to the present invention, the relative positional relationship between the rotary cylinder and the inclined tape guide and the vertical tape guide remains unchanged regardless of the tape loading operation, and a stable tape running system is always provided. At the same time, the design becomes easy because all the members arranged other than on the cylinder base need only be arranged perpendicularly to the substrate. Furthermore, since tape loading is completed by the simple operation of rotating the cylinder base, it is possible to realize a chief loading device that has a simple structure and occupies a small area.

[Brief explanation of the drawing]

1 and 2 are plan views showing one embodiment of the tape loading device of the present invention, and FIG. 3 is a schematic side sectional view showing the main parts of the tape loading device taken along line M-M in FIG. 2. , FIG. 4 is a plan view showing an outline of a conventional tape loading device. 1...Cylinder base 2...Group &
, 3... Fixed drum, 4... Rotating cylinder, 6... Cylinder motor, 7, 10...
... Vertical tape guide, 8°9 ... Inclined tape guide, 23 ... Capstan motor, 30
...Tape cassette, 31...Magnetic tape. Name of agent: Patent attorney Shigetaka Awa and 1 other person2-
・ 4 °゛6−・ '1. l0-- 8.9 --- Cylinder base! & Sales pressure constant tram tipping trip sled' / Damota friend's tape guide toy' category tape or idle capstan dryer and - ゛3-・- 4-・ 6 ・・ 7, To ・- 8, 9-・ Cylinder Base 15 temporary l! 111 Straight Tape Guide Inclined Tape Guide

Claims (1)

[Claims] a substrate supporting a tape cassette containing a magnetic tape having a non-magnetic surface; a cylinder base rotatably supported by the substrate; a fixed drum fixedly provided to the cylinder base; a rotary cylinder that is rotatably provided and that writes information to and reads information from the magnetic tape; when the tape cassette is installed, the cylinder base is located on the non-magnetic surface side of the magnetic tape; As the magnetic tape rotates, it engages with the magnetic tape and pulls it out of the tape cassette;
At the tape loading completion position, at least one magnetic tape running parallel to the substrate is guided to the rotating cylinder while running at an angle with respect to the substrate.
Inclined tape guide A and vertical tape guide A for each book
When the tape cassette is loaded, it is located on the magnetic surface side of the magnetic tape, engages with the magnetic tape as the cylinder base rotates, and at the tape loading completion position is guided by the rotating cylinder and the At least one inclined tape guide B and one vertical tape guide B for causing a magnetic tape running at an angle with respect to the substrate to run parallel to the substrate are disposed around the rotating cylinder, and the cylinder base A tape loading device characterized in that it is planted in a tape loading device.