JPH0478089A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To reduce a noise by providing a soundproof/sound absorbing material which covers each electric motor and a mechanical part, and insulating sounds leaking to the outside. CONSTITUTION:A cylinder motor 3 is a main place in which the noise is generated in a cylinder rotary system, and this is enclosed with a soundproof/sound absorbing material 5. The main places in which the noise is generated are between a rotor 12 of a capstan motor and a stator coil 13, and a bearing, in the case of the rotor 12 and the coil 13, and they are enclosed with a soundproof/sound absorbing material 14. The sliding sounds of a traveling system and the sounds generated when a rotary head 4 comes in contact with a tape, are difficult to be enclosed, and so processed by the enclosure and sound absorption of the top face, back face part, and the both side face part of the mechanical part. Especially, the contact sound of the rotary head 4 with the tape is loud and so the wall of a soundproof/sound absorbing material 16 is prepared at each of the back face and the both side face of the facing box on the top face of the mechanical part on a rotary cylinder 15. Thus, a magnetic recording and reproducing device with the reduced noise can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic recording/reproducing device with reduced leakage of mechanical sound.

2. Description of the Related Art Recent magnetic recording and reproducing devices use an increasing number of electric motors. These electric motors are mounted directly to the chassis.

Problems to be Solved by the Invention In such conventional magnetic recording and reproducing devices, the noise generated from the electric motor becomes a problem when listening to quiet music. Currently, soundproofing measures are almost non-existent, relying only on the outer box. Therefore, the sound of the electric motor is transmitted as is, causing noise. The present invention solves the above problems and aims to provide a low-noise magnetic recording/reproducing device.

Means for Solving the Problems In order to achieve the above object, the present invention provides soundproofing/soundabsorbing materials for wrapping the capstan, rotary cylinder, motors of the tape running system, and soundproofing/soundabsorbing materials for wrapping the mechanical parts. It is arranged so as to insulate sound leaking to the outside.

Operation The present invention is capable of insulating most of the sound from the noise source and reducing noise by the above-described configuration.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a side view of the rotating cylinder section. 1 is an upper cylinder, 2 is a lower cylinder, and 3 is a cylinder motor. In the cylinder rotation system, the main place where noise is generated is the cylinder motor 3, and by sealing this with soundproof/sound absorbing material 5 as shown by the dotted line, most of the noise can be insulated. Also, since the drive part may generate heat, in that case, the bottom of the motor is not sealed, as shown in Figure 2, and a wall with an "L" shape in cross section is made of soundproofing/sound absorbing material 5.
It is soundproof and absorbs sound, and heat is radiated from the heat sink 6 at the bottom.

FIG. 3 is a side view of the capstan motor section. Third
In the figure, 12 is a rotor of a capstan motor, and 13 is a stator coil. In this case, the noise between the rotor and the coils and the bearings will be the main ones, so they are sealed with a sound insulating/sound absorbing material 14. When heat is generated, it has a sound insulating structure similar to the cylinder part shown in Figure 2, and the heat is radiated from the bottom.

Sound insulation of the reel motor can be implemented in a similar manner.

゛Other sources of noise include the sliding noise of the running system and the sound generated when the rotating head hits the tape.
Since it is difficult to seal these parts, as shown in FIG.

Treat by sealing and sound absorbing on both sides. In particular, since the contact noise between the rotating head and the tape is loud, the rotating cylinder 15
At the top, you need to be careful. Here, the outer box on the top of the mechanism, and the back.

By creating walls of soundproofing and sound-absorbing materials on both sides, when the deck is assembled, a "soundproofing pack" is created for areas other than the front and bottom surfaces. At this time, the bottom surface of the mechanical section is previously soundproofed using a vibration damping/sound absorbing steel plate 19 or the like.

As described above, according to the magnetic recording/reproducing apparatus of the embodiment of the present invention, almost all noise can be insulated.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, the tapping sound of the electric motor and the head tape can be reduced.

Since the sound such as the sliding sound of the traveling system is insulated using the soundproofing/sound absorbing material, it is possible to provide a low-noise magnetic recording/reproducing device.

[Brief explanation of drawings]

Fig. 1 is a side view of the cylinder section of one embodiment of the present invention;
The figure is a side view of the cylinder section of another embodiment, FIG. 3 is a side view of the same capsun section, and FIG. 4 is a front view of the entire mechanism section. 3...Cylinder motor, 5.14.16...
...Soundproofing/sound-absorbing material, 19...Sound-absorbing bottom plate. Name of agent Patent attorney Shigetaka Awano Haka 1 person + ← Ame Su − Takumasu Hatsu I/− Li − 2 −

Claims (1)

[Claims] This magnetic recording and reproducing device is equipped with soundproofing/soundabsorbing materials surrounding the capstan, rotary cylinder, and electric motor of the tape running system, and soundproofing/soundabsorbing materials surrounding the mechanical parts, and arranged to insulate sound leaking from each part.