JPS61276194A - Attachment structure for mechanical deck of magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To avoid the generation of distortion of a mechanical deck by attaching the mechanical deck via a mold frame. CONSTITUTION:A mechanical deck 12 is fixed to the 2nd mold frame 10 by a screw 17A. The frame 10 is connected to a sheet metal frame which is fixed to a chassis via a conduction part 14 to secure the electric conduction with the deck 12. Then the deck 12 is also fixed to the 1st frame which is connected to a top plate. Thus the distortions of the deck 12 caused by the attachment to the chassis or by the change with time are absorbed by the mold chassis via both mold frames. Then the deck 12 is free from such distortions that cause the deterioration of various characteristics including the tape traveling characteristics, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mounting structure for a mechanical deck of a magnetic recording/reproducing device.

[Summary of the invention]

This invention provides a magnetic recording and reproducing device in which a mechanical deck is fixed to a top plate via a first frame and to a sheet metal frame via a second frame, and the top plate and the sheet metal frame are each fixed to a chassis at two places. In the mechanical deck mounting structure, the second frame is made of synthetic resin,
By fixing it to the sheet metal frame in one place, it can be attached to the chassis without causing distortion to the mechanical deck.

[Conventional technology]

Magnetic recording and playback, e.g. video tape recorder (VTR)
Mechanical decks such as these are typically adjusted for optimal tape path before installation into the chassis.

Therefore, when assembling such a mechanical deck on the chassis of a magnetic recording/reproducing apparatus, it is necessary to maintain flatness so that the tape path etc. do not change and to prevent distortion from occurring.

As a method of attaching the mechanical deck to the chassis so as not to cause distortion, there is a method of attaching the mechanical deck to the chassis by absorbing the distortion via a plurality of metal intermediary frames.

[Problem that the invention seeks to solve]

However, when using an intermediary frame as described above, since the intermediary frame is made of metal, the distortion of the chassis, or the distortion when attaching multiple intermediary frames to the chassis, is transmitted to the mechanical deck and the plane of the mechanical deck is There are problems in that the tape path is easily changed.

This invention was made in order to solve the above-mentioned problems, and provides a magnetic recording and reproducing device in which the mechanical deck can be easily attached and the mechanical deck is not distorted when attached to the chassis. This provides a mechanical deck mounting structure.

[Means for solving problems]

This mounting structure for the mechanical deck of the magnetic recording and reproducing device of the invention is such that the second frame to be attached to the mechanical deck is a molded frame made of synthetic resin, this molded frame is fixed to the sheet metal frame at one point, and the sheet metal frame is is fixed to the chassis.

[Effect]

In this invention, the synthetic resin molded frame absorbs the distortion that occurs when attaching the mechanical deck to the chassis, so even if there is some distortion, the mechanical deck can be attached to the chassis without disturbing the tape path. You will be able to do this.

〔Example〕

Fig. 1 is an exploded perspective view of the chassis and block in which the present invention is applied to a VTR, Fig. 2 is a partial view showing the attachment of the second mold frame and mechanical deck, and Fig. 3 shows the locking part and the engaging part. FIG.

In these figures, reference numeral 1 indicates a metal chassis, and a predetermined number of screw holes 2A and dowel holes 2B are provided, for example, four each.

3 indicates a metal top plate fixed to the chassis 1;
Two holes 4A into which screws 17B (described later) are inserted and two dowels 4B are provided.

Reference numeral 5 indicates a first mold frame attached to the top plate 3, and 6j*a rotating door rotatably supported by the mold frame 5 of i1.

7 indicates a sheet metal frame fixed to the chassis 1 like the top plate 3, and is provided with a hole 8A through which a screw 17B is inserted, a dowel 8B, a screw hole 8C, and a locking portion 8D.

Reference numeral 9 indicates a case for a printed circuit board attached to the sheet metal frame 7, 10 indicates a second mold frame in which the upper part of the side wall is attached to the sheet metal frame 7, and as shown in FIG. Retaining part 1 that engages with retaining part 8D
1B is provided, and the fixing portion 11A is provided with a hole 11a into which the screw 15 is inserted.

12 is the first. On the second mold frame 5°10,
As shown in FIG. 2, a mechanical deck is shown that is fixed with screws 17A, which will be described later, and a rotating cylinder, tape guide, tape drive mechanism, etc. are attached thereto.

13 is a printed circuit board attached to the mechanical deck 12; 14 is a conductor for electrically connecting the sheet metal frame 7 and the mechanical deck 12 for grounding; one end is bent into a U-shape; A hole 15 is provided through which a screw 16 for fixing and conducting is inserted.

17A is a mounting screw for fixing the second mold frame 10 to the mechanical deck 12; 17B is a mounting screw for fixing the second mold frame 10 to the mechanical deck 12; The mounting screws for fixing the sheet metal frame 7 to the chassis 1 are shown.

As described above, the present invention provides the mechanical deck 12 with the first. Second mold frame5. Attach to. At this time, as shown in FIG.
0 and the mechanical deck 12, insert the fixing part 11A of the second mold frame 10 between the other end of the conductor 14, and connect the second mold frame 10 and the mechanical deck with the screw 17A. 12 is fixed, the mechanical deck 12 and the conductor 14 are electrically connected.

Then, attach the first mold frame 5 to the top plate 3,
As shown in FIG. 3, the engaging portion 11B of the second mold frame IO is inserted into the locking portion 8D of the sheet metal frame 7 and loosely fitted, and the screw 16 is inserted into the hole 15, l1a. Second mold frame 10. The conductor 14 is fixed to the sheet metal frame 7.

Therefore, the mechanical deck 12 and the sheet metal frame 7 are electrically connected through the conductor 14.

When the case 9 is attached to the sheet metal frame 7 assembled in this way, the mechanical deck 12 is grounded via the conductor 14 and the sheet metal frame 7, and the block B shown in FIG. 1 is completed.

When attaching the assembled block B to the chassis 1 as shown in FIG. 1, the top plate 3 and the metal plate 7 frame 7 are positioned on the chassis 1 with the dowels 4B and 8B corresponding to the dowel holes 2B. Then, by inserting the screws 17B into the holes 4A and 8A and screwing them into the screw holes 2A, the top plate 3 and the sheet metal frame 7 can be fixed to the chassis 1 at four locations.

In this state, the mechanical deck 12 is in the first position. It is supported by the chassis l via the second molded frame 5.10, and since one of the four corners of the mechanical deck 12 is not fixed, the mechanical deck 12 is ultimately supported at three locations. . Therefore, even if there is distortion in the sheet metal frame 7 when attaching the block B to the chassis l, or even if the dimensional accuracy changes due to aging, the distortion in the chassis 1 etc. will be absorbed by the second molded frame lO. Therefore, the mechanical deck 12 can cause distortion on the chassis 1 with good flatness.

It can be installed without any problem. Therefore, the tape bus of the mechanical deck 12 attached to the chassis 1 does not change.

The permissible range for maintaining the flatness of the mechanical deck 12 is the range until the retaining part 11B of the second mold frame 10 comes into contact with the locking part 8D of the sheet metal frame 7, as shown in FIG.

In addition, since the second mold frame IO absorbs distortion, the top plate 3. Since the sheet metal frame 7 can be attached to the chassis l from one direction, the mechanical deck 12 can be attached with good workability.

Although the above embodiment has been explained using a VTR, it goes without saying that the present invention can also be applied to other magnetic recording/reproducing devices, such as a mechanical deck of a tape recorder.

Further, since the second mold frame 10 is configured to absorb strain, the first mold frame 5 may be a sheet metal frame.

Furthermore, the chassis l and the mechanical deck 12 are connected to the conductor 14.
In addition, conduction may be achieved using a wire or the like.

〔Effect of the invention〕

As explained above, in the mounting structure of the mechanical deck of the magnetic recording/reproducing device of the present invention, the second frame to be attached to the mechanical deck is a molded frame made of synthetic resin, and this molded frame is fixed to the sheet metal frame at one point. Furthermore, since the sheet metal frame is fixed to the chassis, the molded frame absorbs the distortion that occurs when attaching the mechanical deck to the chassis or the distortion of the chassis due to changes over time, so the mechanical deck can be fixed to the chassis with good flatness. It can be installed without causing any problems. Therefore, the tape path of the mechanical deck attached to the chassis does not change.

Further, since the molded frame absorbs distortion, the top plate and the sheet metal frame can be attached to the chassis from one direction, so there are advantages such as easy workability in attaching the mechanical deck.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of a chassis and block in which the present invention is applied to a VTR, Fig. 2 is a partial section showing the attachment of the second mold frame and mechanical deck, and Fig. 3 is a diagram showing the locking part and the engaging part. FIG. In the figure, l is the chassis, 3 is the top plate, 5 is the lth mold frame, 7 is the sheet metal frame, LO4*m2 mold frame, 12 is the mechanical deck, 15.17A, 17B
indicates a screw. ! The defeat of 2's Mall Dot and Mechanical Bouki
Hosube Myodan Figure 2 Yi, ZGP and Son 41 Wholesale and Ho-Kiku 1 Figure 3 ゛

Claims (1)

[Claims] A mechanical magnetic recording/reproducing device in which a mechanical deck is fixed to a top plate via a first frame and to a sheet metal frame via a second frame, and the top plate and the sheet metal frame are each fixed to a chassis at two places. In the deck mounting structure, the second frame is made of synthetic resin,
A mounting structure for a mechanical deck of a magnetic recording/reproducing device, characterized in that the mechanical deck is fixed to the sheet metal frame at one location.