JPS59124062A - Magnetic tape device - Google Patents

Abstract

PURPOSE:To eliminate the assembling operation of a positioning and fixing member which requires a high-precision jig by forming the guide groove of a magnetic tape leading-out member and a positioning and fixing means in the same body with a substrate where a drum is mounted. CONSTITUTION:The one-sheet main body substrate 21 has the guide grooves 30 and 31 of the magnetic tape leading-out members 28 and 29 and tape leading-out member positioning and fixing members 33 and 34 in one body. The V-shaped wall part 33a of the fixing member 33 abuts on the lock post 28a of the leading- out member 28 to perform positioning in an advance direction, and the intermediate part bottom surface 33b abuts on the tip part of the member 28 to specify inclination in the advance direction; and both side wall parts 33c abut on the outer circumference of the post 28a to left and right inclination. Consequently, the fixing members 33 and 34 are fitted conventionally by using a high-precision jig, but this fitting operation is eliminated to facilitate the assembling operation.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to a rotating magneto-electric drum that pulls a magnetic tape out of the cassette from a tape cassette that incorporates a reel hub around which a magnetic tape is wound, and that allows the magnetic tape to be installed outside the cassette. The present invention relates to a magnetic tape device that records or reproduces signals by winding it at a predetermined angle and running it.

Conventional configurations and their problems In recent years, with the remarkable spread of magnetic tape devices, the devices have been streamlined to be thinner, lighter, shorter, and cost-reduced. At the same time, there is a tendency for the recording/reproduction time to become shorter, and greater precision than ever before is required. The tape running path of a magnetic tape device has a particularly large influence on the reproduced image quality and the compatibility of tape recording and reproduction, and its deviation from the theoretical value and stability require accuracy on the order of microns. In order to cope with this, as shown in Japanese Unexamined Patent Publication No. 57-130253, a substrate on which a rotating magnetic drum is directly mounted and a substrate having a tape pull-out member guide groove are integrated, and a tape running guide member is mounted on this substrate. are arranged to form a magnetic tape device. The structure described in this Japanese Patent Application Laid-Open No. 57-130253 Jij is as follows: (1) Since the two substrates are separate, the tape running stability is disturbed due to deviations in the setting of the carpet plane and deviations in the wide angle during assembly.

■ 2 boards! Because it is a #1 construction, it is a female type and is disadvantageous for weight reduction.

■ It takes time to assemble the two boards.

These issues have been improved.

FIG. 1 shows a conventional example. According to the figure, +11 is the main body base.
It is a plate (hereinafter referred to as F sear sheet), which includes a mounting part (2) on which the rotating magnetic drum is placed, and a tape drawer member (:+l (
41 tea inner grooves + 51 F6) are integrated and provided.

On the chassis +11 are positioning and fixing members (7) 18) for positioning and fixing the tape drawer members (3) and (4).
and tape running system parts are attached. In the figure, (9) is an erasing head.

uOi, j; A/C head, un is pinch roller,
@ is y lie wheel, (to) is supply reel, u4)
is a tick-up reel. Figure 2 (al and (b)
Fig. 5 shows a plan view and a sectional view of the positioning direction 9 member (7) [and (8)] of the tenib drawer member (3) [and (4)], and Fig. 5 shows the positioning direction fixing member (7) [and (8)]. ] shows the positioning regulation state of tape drawer members (3) [and (4)]. In Figures 2 and 6, the ■wall section (
7a) is in contact with the outer periphery of the lock post (3L) inflated on the tape drawer member (3), and the tape drawer member (3)
positioning in the direction of movement of the U-wall at the lower end (
7b) is in contact with the outer periphery of the lock boss (3a) to prevent the tape pull-out member (3) from falling horizontally in the direction of movement, and the bottom surface of the intermediate portion (7C) is in contact with the outer circumference of the tape pull-out member (3).
3), and acts together with the sliding portion between the rear end of the tape pull-out member (3) and the chassis fl) to prevent it from falling in the direction of travel. The same applies to the positioning and fixing member (8). The positioning fixing member (
7) and (8) are tape drawer members (3) as described above.
Since it is necessary to have a positioning function for (4), it is necessary not only to have precision in processing the single product, but also to have precision in attaching it to the chassis +11. Therefore, when installing to the chassis fi+, the rotating magnetic drum mounting part (2)
[Therefore, it is necessary to control the position of the positioning fixing members (7) and (8) and to mount them with high accuracy, which reduces the workability of assembling the device. It was very bad. Also, the positioning and fixing members (7) and (8) are intended to perform one positioning function.

As shown in part A indicated by the dots in Fig. 2(b), ■wall part (
7a) and the U wall portion (7b) overlap in the Z direction. Therefore, it is difficult to mold the above-mentioned member (C (8)) using a pair of split molds, and a core mold must be used for one part.Therefore, the productivity of the single product is also poor.

Therefore, the chassis 11) and the positioning 1 part fixing member +711
8+ 'i In order to improve the ease of assembly and rationalize the chassis by integrating it, a core mold is required for the chassis mold, which results in extremely low productivity29.
This becomes a matter of chassis rationalization.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and provides a magnetic tape device having a stable magnetic tape running path, a thin and lightweight main body board, and a streamlined main body with good assembly workability. The purpose is to enable manufacturing with good productivity.

Structure of the Invention In order to achieve the above object, a magnetic tape device of the present invention comprises:
Built-in reel hub wrapped with magnetic tape.
Pulling out the magnetic tape from the cassette and running it attached to a rotating magnetic drum installed outside the tape cassette,
A device for recording or reproducing a signal, which reciprocates between a position where the faYC tape in the tape cassette can be pulled out and a position where the magnetic tape can be pulled out of the tape cassette and attached to the rotating magnetic drum. A magnetic tape pull-out member is provided, and a guide for the magnetic tape pull-out member and a positioning and fixing means for the magnetic tape pull-out member are integrally formed on a single body substrate on which the rotating magnetic drum is directly mounted. .

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The main board is made into one piece.

Traveling system members are constructed on this board cutting υ. Ikesu terra reel, warmth is a pick-up reel, threat is a fu'y wheel, and c2ω is a pinch roller. Also, ``Corporate'' is an erase head, and ``Shino'' is an A/C head. t281129)
is the tape drawer member, and it is located at a position where the magnetic tape inside the tape cassette can be pulled out and the magnetic tape is pulled out to the outside of the tape cassette and rotated. - It moves along the guide plate (31) formed on the main body substrate I21) to a position where it can be attached to the air drum (not shown). Reference numeral 13z... is a mounting part that is integrated with the main body board & I) for directly mounting the rotating magnetic drum, and the rotating magnetic drum is mounted with the rotating magnetic drum tilted at a predetermined angle. Eel (Treasury) is tape drawer member I2
This is a positioning and fixing member for positioning and fixing 81Qm. Figure 5 shows the positioning fixing member 133) C&Or'3
4)], FIG. 6 is a plan view thereof, and FIG. 7 is a 1 ml fixed state of positioning of tape drawer member (c) [and threshold)] by positioner I fixed member Hime [and β Tsukasa]. shows. The positioning identification member ([and □□□] is the main body board 12
It is one with 1+. 1 positioning 11 as shown in FIG.
The V-wall (33a) at the upper end of the fixing member (to) abuts against the outer periphery of the lock boss I- (28a) installed in the tape drawer section, thereby positioning the tape drawer member ρQ in the traveling direction. Then, the bottom surface of the intermediate part (33b) comes into contact with the tip of the tape pull-out member, and acts together with the sliding part between the rear end of the tape pull-out member (end) and the main body board (two sides) to prevent it from falling in the direction of travel. The protruding both side walls (33C) at the lower end have the function of regulating the left and right tilting in the direction of movement by coming into contact with the outer periphery of the lock post (28a). The positioning fixing member (11) is integrated into the main body board.The V at the top of the positioning fixing member
The same applies to the wall portion (34a), the bottom surface of the intermediate portion (34b), and the projecting side wall portions (34G) at the lower end. (29a) is a lock post of the tape drawer member v91.

Also, the positioning and fixing member c of the tape drawer member 1281 c9) integrated into the main body board 121)! 3!341 has a V wall portion (33a) (3) which has a positioning function in the advancing direction of the tape pull-out member tj81 t29).
4a) and the protruding side wall portions (33C) and (34C) at the lower end that restrict left and right deviations in the traveling direction do not overlap in the Z direction, and have a constant gap C (see FIGS. 6 and 7).
have.

Therefore, the main body substrate el!11 with the positioning and fixing member (331(2) integrated therein) can be molded using a pair of molding dies that can be separated in a direction directly parallel to the moving surface of the tape drawing member 12814.

Effects of the Invention As is clear from the above description, the present invention integrates the guide groove of the magnetic tape pull-out member and the positioning and fixing means of the tape pull-out member into a single body plate on which the rotating magnetic drum is directly placed. By configuring the magnetic tape device u by arranging the traveling member f on the human body base plate, the following effects can be obtained.

(2) It is possible to omit the assembly work of attaching the positioning and fixing member to the main body board, which requires a high-quality jig, and the assembly of the magnetic tape device can be streamlined.

- By integrating the positioning and fixing means with the main body board, the number of parts can be reduced and the magnetic tape device can be rationalized.

■ By using a single main body board, the number of reference planes can be reduced and the reference planes of each component can be made the same. By arranging the traveling system parts on the main body board, stable magnetic The necessary accuracy for obtaining the tape running path can be ensured.

■ By using only one main body board, it is advantageous to make the device thinner and lighter.

■ As described in the embodiment, by making the main body substrate into a structure that can be molded with a pair of molding molds that can be separated in the direction perpendicular to the moving plane of the tape drawing member, the effect as described in 61J can be obtained. It becomes possible to manufacture the main body board of the magnetic tape device with high productivity, and a great effect can be obtained in reducing the cost of the magnetic tape device.

[Brief explanation of the drawing]

Figure 1 is a schematic perspective view of a conventional magnetic tape device, and Figure 2 (
5) is a plan view and a sectional view of a conventional positioning and fixing member, FIG. 5 is a sectional view showing a positioning regulation of a tape drawer member by a conventional positioning and fixing member, and FIGS. 4 is a perspective view of a magnetic tape device, FIG. 5 is a perspective view of a positioning and fixing member, and FIG. 6 is a perspective view of a magnetic tape device.
The figure is a plan view of the positioning fixing member, and Figure 7 is the positioning lL
i1 This is a cross-sectional view showing the positioning regulation of the tape drawer member by the constant member)...main body board, 122...supply reel,
(Support))...Dake assembly reel, 9...Capstan, t2t5i...Pinch roller, VA29)
...Tape drawer member, (28a) (29a)...
Lockpos), l; JO)θl)... Guide groove, Kei.
...Mounting part, "33) +34I-...Positioning 1M fixed member, (33a) (34a)-V 4q part. (33b) (341))...Intermediate part bottom, (33C'
) (34C)...Protruding both side wall agent Hiroshi Hiroshi Figure 7 Figure 2 Figure 5 Figure 4 Figure 5 Figure r Figure 3

Claims (1)

[Scope of Claims] 1. A device for recording or reproducing signals by pulling out a magnetic tape from a tape cassette containing a reel hub wound with magnetic tape and causing it to travel along a rotating magnetic drum installed outside the tape cassette. a magnetic tape drawer member that moves back and forth between a position where the magnetic tape in the tape cassette can be pulled out and a position where the magnetic tape can be pulled out of the tape cassette and attached to the magnetic drum; A magnetic tape device, wherein a guide groove for the magnetic tape pull-out member and a positioning identification means for the magnetic tape pull-out member are integrally formed on a single body substrate on which the rotating magnetic drum is directly placed. 2. The magnetic tape device according to claim 1, wherein the main body substrate has a structure that can be molded with a pair of molding dies that can be separated in a direction perpendicular to the movement plane of the magnetic tape pull-out member.