JPS59180841A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To reduce the relative distance between a cassette and a cylinder and to miniaturize a magnetic recording/reproducing device by completing the tape loading action having no interference between a magnetic tape and an upper cylinder after turning the upper cylinder to a position where the outer circumferential surface excepting the deleted area of the upper cylinder abut on the magnetic tape in a tape loading mode. CONSTITUTION:When a VTR is switched to a tape loading mode, an upper cylinder 34 is turned and fixed. A magnetic tape 20 is shifted to a position C. Then the loading mode is changed to shift tape guides 18, 19, 35, 22 and 24, inclined posts 25 and 26 and a pinch roller 21 along a prescribed route and to fix them there respectively. In this case, a rotor 14 is turned clockwise for protection of a magnetic tape under loading. The tape 20 is positioned at the upper side of the rotor 14 before the tape is loaded. When the tape loading is over, the tape 20 is taken up to the cylinder 34 as well as to a lower cylinder 2 by means of said tape guides and inclined posts.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a magnetic recording/reproducing device.

Conventional configuration and problems thereof A conventional magnetic recording/reproducing apparatus (hereinafter referred to as a VTR) will be explained with reference to FIGS. 1 and 2. When the cassette (9) is installed in the VTR, the take-up side (hereinafter referred to as T side) chi "j guide (5), the T side inclined post (3), and the supply side (hereinafter referred to as S side) tape kite (6) ), and the S side inclined host (4) pulls out the magnetic tape (A) in the direction of the arrow, wraps the magnetic tape (1) around the hysterinter (1) and the lower syristor (2), and attaches the magnetic head (6) Recording and reproduction is performed on a magnetic tape by rotating a rotating body UΦ equipped with a
)) When the cassette is installed, insert the cylinder part into the space where the cylinder (6) is inserted. ) was difficult to escape from, and in the end, V
'rR depth is E silishita (1) and lower silishita (
It was difficult to make the length smaller than the sum of the drum diameter and the cassette size in 2). In FIGS. 1 and 2, (7) and (8) are the IDs D-RA, 00 is the supply reel, S is the take-up reel, and QQI is the rotating shaft.

Purpose of the Invention The purpose of the Kokuhatsu 9J is to eliminate the drawbacks of the conventional technology described in (h), and to provide a VTR that can further reduce the relative distance vibration between the cassette, upper cylinder, and lower syringe, and can be made more compact. do.

Structure of the Invention (1) In order to achieve the object, the VTR of the present invention includes a rotating body which is mounted so as to be located in a circumferential orbit at a position lower than the lower end of the magnetic tape when the magnetic head or cassette device is used.
a lower cylinder disposed on the D side of the rotary body and fixed to the base plate; and an annular upper cylinder disposed on the E side of the rotary body and having a portion removed along the axial direction. When the cassette is installed, the removed part of the E syringe and the magnetic chip face each other, and when the chip is switched to the holder, the E syringe is magnetically connected to the outer periphery other than the removed part. The rotating tape is pulled out from the cassette to a predetermined position where it can come into contact with the tape, and is wound around the outer circumference of the E-syringe other than the removed portion.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be explained below based on the drawings.

FIGS. 3 to 7 show an embodiment of the present invention, and the same components as those shown in FIG. 1 and FIG. Fig. 3 is a schematic configuration diagram of a VTR, in which oQ has a spacer aη, and the magnetic tape (a) is fed by pressing the pinch 0-lag to the spacer ση via a magnetic chi. This is Tanabata Serastan, the master who controls the 0 Barrel Q■I (Treasure)
4) is a tape guide that pulls out the magnetic tape from the cassette (9) and fixes it in a predetermined position, and 4) is a tilted host. c141 is an E syringe having a deletion part (B), and the deletion part (B) is located on the cassette (9) side when the cassette is attached. Figure 4 is a cross-sectional view of the cylinder of the same VTR. It is a rotating shaft, has a gear (c), and is connected to an 0-indicator (not shown). (C) and (E) are rotary transformers that transmit the output of the magnetic head (6) (to), (2) is a maginet, and the trowel is a coil that gives rotational motion to the rotating body Oa. ) c3υ is a bearing that rotatably holds the rotating body (110) in the lower syringe (2). Cylinder ■ is rotated and fixed at the position shown in Figure 5 by E entry 0-Dingi Tanabata, and the magnetic tape CA changes to position C.Next, 1 0-Dingi Tanabata is switched. , tape hide 0 trivial 0
'l16■, tilt post adjustable and Hishichi D-Rashi υe
Then, it moves along a predetermined movement path and is fixed. At this time, the rotating body t14) is rotating clockwise to protect the magnetic tape in the tape O-deinter. Figures 6 and 7 show the magnetic tape before and after the front and back of the chain, respectively.
In Fig. 6, the magnetic tape 4 is located above the rotating body, and when the tape D-setting is completed (Fig. 7), the magnetic tape 4 is located above the tape guide (Fig. 7). To) Q tatsu) (E) (C) and inclined post (E)
It is wrapped around the upper cylinder (■) and the lower syringe (2) by (a).

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, an annular upper syringe with a portion cut out along the axial direction is used, and when a cassette device is used, the magnetic tape and the E-syringe do not interfere, and the 0-day syringe is removed. After the L syringe has rotated to the position where the outer periphery other than the deleted part comes into contact with the magnetic tape,
- Since the dinging is completed, the relative distance between the force and the cylinder can be reduced, and the device can be made smaller. In addition, when loading a cassette, the magnetic head is placed at a position lower than the bottom edge of the magnetic tape, and when the tape O-ding is completed, the height of the magnetic tape is adjusted with the inclined post, allowing the magnetic tape to be placed only in the L series. By simply providing a clearance, parts 7 to 9 of the cylinder can be arranged as before, and furthermore, since the cylinder is fixed to the base plate as before, it is possible to achieve a configuration that is stable in terms of accuracy.

[Brief explanation of the drawing]

Fig. 1(t) is a schematic plan view of the conventional V'fR in the tape opening-to-interface state; Fig. 2(a) is a schematic plan view of the cylinder section of the same VTR; Third
The figures are a schematic plan view of a VTR according to an embodiment of the present invention when a cassette is installed, FIG. Doma v′
Fig. 6 is a schematic plan view showing the positional relationship with the magnetic chip 1: cylinder when the cassette of the same VTR is installed;
FIG. 3 is a schematic front view showing the positional relationship between the magnetic tape and the cylinder when the tape 0-puinji is completed. (2)...Cylinder, (9)...Cassette, (la
μ葎...6M'A head, α→...Rotating body, (A)
・・・Magnetic tape, Figure 7 2θ

Claims (1)

[Claims] ■ A rotating body that is housed so that the magnetic head is positioned in the circumferential orbit LK at a position lower than the bottom end of the magnetic tape when the cassette is installed, and a lower body that is placed below this rotating body and fixed on the board. and an annular F cylinder arranged above the rotating body and having a portion removed along the axial direction, and when the cassette is installed, the removed portion of the L cylinder and the magnetic tape face each other. When switching to the tape loading mode 7, the F cylinder is rotated and fixed at a predetermined position where the outer peripheral surface of the F cylinder other than the deleted portion comes into contact with the magnetic tape, and then the tape 1J is loaded with the magnetic tape at a predetermined position. A magnetic recording and reproducing device configured such that a magnetic tape is pulled out from the cassette and wound around the outer peripheral surface of the E-silicitor other than the deleted portion.