JPH04129055A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To three-dimensionally actuate loading posts to help to miniaturize and simplify the above device by inclining a part of rotating links and a part of connecting links with a mechanism substrate and rotating the rotating links parallel with the mechanism substrate. CONSTITUTION:A part of the rotating links 23, 24 and a part of the connecting links 25, 26 are inclined with the mechanism substrate 20 and the rotating links 23, 24 are rotated parallel with the mechanism substrate 20. The rotating links 23, 24 are rotationally moved at the time of a loading operation by this constitution. Namely, the height and angle of the connecting links 25, 26 coupled to the rotating links 23, 24 from and with the mechanism substrate 20 are changed by changing the direction of the rotating links 23, 24 and eventually the loading posts 10, 11 coupled to the connecting links 25, 26 are moved while the height and angle thereof are changed. The mechanism is miniaturized in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a magnetic tape for use in digital audio tape recorders, video tape recorders, etc., which is wound spirally around an inclined cylinder, and tracks which are inclined with respect to the longitudinal direction of the magnetic tape are formed. The present invention relates to a so-called helical scan type magnetic recording and reproducing apparatus that records information on a tape or reproduces information that has been recorded in this way, and more specifically relates to its tape loading mechanism.

BACKGROUND OF THE INVENTION In recent years, magnetic recording and reproducing devices have become increasingly smaller, lighter, and more accurate, and accordingly, there has been a demand for smaller, more accurate mechanisms. To this end, several attempts have been made to miniaturize and improve precision of the magnetic tape loading mechanism (for example, Japanese Patent Application Laid-Open No. 1-302
No. 588).

An example of the above-mentioned conventional magnetic recording/reproducing device will be described below with reference to the drawings.

FIG. 4 shows a plan view of a conventional magnetic recording/reproducing apparatus, and FIG. 5 shows a side view of the conventional magnetic recording/reproducing apparatus.

In FIGS. 4 and 5, the cylinder unit 1 includes a fixed cylinder 3 provided with a lead on the outer circumference for regulating the running of the magnetic tape, and a rotary cylinder 2 coaxially and rotatably attached to the fixed cylinder 3. It is composed of. Further, this cylinder unit 1 is attached to the upper side of the mechanism board 20 in an inclined manner by a mounting section provided on the fixed cylinder 3.

The loading posts 10, 11 and the inclined post 15.16 installed on the loading base 17.18 are
The magnetic tape 12 is pulled out from the tape cassette 19 containing the magnetic tape 12, moved to a predetermined position regulated by the stoppers 8 and 9 attached to the guide members 6 and 7, and the magnetic tape 12 is placed in the cylinder unit 1 in a predetermined position. It is connected to a rotating ring 21.22 mounted on the mechanism board 20 via a spring 30, and moves with the rotational movement of the rotating link 21.22.

The guide members 6 and 7 are for regulating the path of the loading post 10.11 during loading, and the loading post 1-10.
a, move along 7a.

Here, since this magnetic recording/reproducing device employs a so-called helical scan method in which a magnetic tape is wound diagonally around a cylinder and recorded/reproduced, on the entrance and exit sides of the magnetic tape 12 with respect to the cylinder unit 1, A difference may occur in the height of the magnetic tape 12 relative to the mechanism board 20, or a difference in angle may occur in the traveling direction of the magnetic tape 12.

These differences are the difference between cylinder unit 1 and mechanism board 2.
It is possible to correct this by installing the cylinder unit so that the angle of inclination with respect to 0 becomes larger, but the larger the angle of inclination of the cylinder unit 1 becomes, the more the cylinder unit 1
This creates wasted space at the top and bottom of the mechanism, increasing the overall thickness of the mechanism. Therefore, in order to reduce the thickness of the entire mechanism, the cylinder unit 1
It is more advantageous to reduce the inclination angle of the supply side loading post 10 and the winding side opening.
It is not possible to hold the feeding post 11 on the same plane, and it becomes necessary to attach the supply side guide member 6 or the winding side guide member 7 at an angle with respect to the mechanism board 20. In this conventional example, the supply side guide member 6 is installed at an angle.

Normal recording and reproduction is performed by rotating the rotary cylinder 2 and running the magnetic tape 12 at a constant speed while keeping the magnetic tape 12 wound around the cylinder unit 1 as shown in the figure.

Problems to be Solved by the Invention However, the above-mentioned conventional magnetic recording and reproducing apparatus has the following problems:
For the above-mentioned reasons, the guide member on either the supply side or the winding side is installed at an angle with respect to the mechanism board 20, and the loading post on either the supply side or the winding side is moved along the inclined guide member. However, as a means for moving these loading posts, rotating rings 21 and 22 are used as in this conventional example.
When using the rotary rings 21 and 22, the rotating rings 21 and 22 require more space in the depth direction of the mechanism than the cylinder unit 1, and therefore are not suitable for downsizing the mechanism. Additionally, there was a problem in that the mechanism was complicated.

It is also possible to use a link row as a means of moving the loading post mentioned above, but in the conventional planar link row, the link row also needs to be attached to the mechanism board at an angle. When the drive source for operating the mechanism board is arranged parallel to the mechanism board, there is a problem that the transmission mechanism for three-dimensionally transmitting the driving force from the drive source to the link row becomes complicated. Ta.

Means for Solving the Problems In order to solve the above problems, the magnetic recording and reproducing device of the present invention includes a cylinder attached to a mechanism board, and a guide provided around the cylinder and having a portion inclined with respect to the mechanism board. A reciprocating slider link row consisting of a member, a loading post that moves along a guide member and wraps the magnetic tape around the cylinder, a rotating link that rotates around an end, and a connecting link that connects the rotating link and the loading post. At the connection point of the rotating link and the connecting link, a part of the rotating link and a part of the connecting link are inclined with respect to the mechanism board, and the rotating link is rotated parallel to the mechanism board. The structure is as follows.

Effect: With the above-described configuration, the present invention rotates the rotary link during the tape loading operation, that is, by changing the direction of the rotary link, the height and angle from the mechanism board of the connecting link connected to the rotary link can be adjusted. Therefore, the height and angle of the loading post connected to the connecting link can be changed and moved.

Embodiment Hereinafter, a magnetic recording and reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a plan view of a magnetic recording and reproducing apparatus according to an embodiment of the present invention, and FIGS. 2 and 3 show side views of a loading mechanism of the magnetic recording and reproducing apparatus of this embodiment. be. FIG. 2 shows the state before tape loading, and FIG. 3 shows the state after tape loading.

In FIGS. 1 to 3, parts that are the same as those in the conventional example are designated by the same reference numerals, and explanations thereof will be omitted. What is different from the conventional example in FIGS. 1 to 3 is the rotary ring 21.2 in the conventional example.
2 is missing, and instead there are rotary links 23, 24, a connecting link 25.2B, and a joint pin 27.28 for connecting the rotating link 23.24 and the connecting link 25.26.
It has a pair of reciprocating slider link rows consisting of.

Referring to FIGS. 2 and 3, the reciprocating slider link row on the supply side will be explained. The rotary link 23 rotates approximately 180 degrees around a rotation center shaft 28 provided at one end thereof.
Connecting link 2 connected by joint bin 27
5 to provide driving force.

The connecting link 25 transmits the driving force to the loading base 17 that slides on the guide member θ.

Here, in this reciprocating slider link row, a rotation center axis 29 is provided so that the rotation link 23 rotates parallel to the mechanism board 20, and a joint pin 27 and a joint pin 27, which are the connection points of the rotation link 23 and the connecting link 25, are provided. A part of the rotating link 23 and the connecting link 26 in the vicinity
When the mechanism board 20 is tilted to the center by bending a part of the connecting link 25, the connecting link 25 becomes parallel to the mechanism board 20 before loading as shown in FIG. 2, and becomes parallel to the mechanism board 20 as shown in FIG. After loading, the connecting link 25 is tilted relative to the mechanism base plate 20.

In other words, in the magnetic recording/reproducing device of this embodiment, by having the above configuration, the rotary link can be moved parallel to the mechanism board using a simple transmission mechanism from the drive source arranged parallel to the mechanism board. Simply rotate the loading post to move it three-dimensionally and set the loading post to the specified height.

It can be moved to a predetermined angle.

In this embodiment, only the reciprocating slider link row on the supply side has been described, but the reciprocating slider link row on the winding side also has a similar configuration and can perform the same operation.

Further, in this embodiment, the mechanism board and the guide member have been described as separate components, but the same effect can be obtained even if the guide part is formed on the mechanism board.

Effects of the Invention As described above, the magnetic recording/reproducing device of the present invention includes a cylinder attached to a mechanism substrate, a guide member provided around the cylinder and having a portion inclined with respect to the mechanism substrate, and a guide member provided in the guide member. The rotating link has a reciprocating slider link row consisting of a loading post that moves along the cylinder and winds the magnetic tape around the cylinder, a rotating link that rotates around one end, and a connecting link that connects the rotating link and the loading post. At the connection point between the connecting link and the connecting link, a part of the rotating link and a part of the connecting link are inclined with respect to the mechanism board, and the rotating link is configured to rotate parallel to the mechanism board. As a result, the loading post can be operated three-dimensionally simply by rotating the rotary link parallel to the mechanism board, and a loading mechanism suitable for downsizing and simplicity can be obtained.

[Brief explanation of drawings]

FIG. 1 is a plan view of a magnetic recording/reproducing apparatus according to an embodiment of the present invention, FIGS. 2 and 3 are side views of a loading mechanism of the magnetic recording/reproducing apparatus of this embodiment, and FIG. 4 is a conventional magnetic recording apparatus. FIG. 5 is a plan view of the reproducing apparatus and a side view of a conventional magnetic recording/reproducing apparatus. 1... Cylinder unit, 6, 7... Guide member,
10.11...Loading post, 12...
Magnetic tape, 23.24... Rotating link, 25,
2θ...Connection link. Name of agent Patent attorney Akira Okaji et al. 28 Figure 25-Ichireinbo link 27-・-Remain 1 Binzz-*Private market-shi 1 axis diagram Figure 3θ Hane! Otsu

Claims (1)

[Scope of Claims] A cylinder attached to a mechanism board; a guide member provided around the cylinder and having a portion inclined with respect to the mechanism board; and a magnetic tape that moves along the guide member. A magnetic recording and reproducing device having a reciprocating slider link row consisting of a loading post for winding around the cylinder, a rotating link rotating around one end, and a connecting link connecting the rotating link and the loading post, At a connection point between the rotating link and the connecting link, a part of the rotating link and a part of the connecting link are inclined with respect to the mechanism board, and the rotating link is parallel to the mechanism board. A rotating magnetic recording and reproducing device.