JP2513553Y2 - Magnetic recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A Field of Industrial Application The present invention relates to a magnetic recording / reproducing apparatus, and is suitable for application to, for example, a digital audio tape recorder.

B Outline of the Invention According to the present invention, in the magnetic recording / reproducing apparatus, the entire shape can be downsized by transmitting the rotational movement of the holder to the damper mechanism arranged at the rear of the capstan.

C Conventional Technology Conventionally, there is a magnetic recording / reproducing apparatus which is adapted to be converted into an audio signal and sequentially recorded on a magnetic tape obliquely (hereinafter referred to as a digital audio tape recorder).

D Problem to be solved by the invention By the way, if this type of digital audio tape recorder can be miniaturized and driven by battery, it is possible to enjoy the music by carrying the digital audio tape recorder. Thus, it is thought that usability can be improved.

The present invention has been made in consideration of the above points, and is intended to propose a small-sized magnetic recording / reproducing apparatus.

E Means for Solving the Problems In order to solve the problems, in the present invention, the holding portion for holding the cassette is provided on the free end side, and the base end side is centered around the predetermined support shaft 55 with respect to the main body. Is rotatably supported and rotates between a position where the cassette held by the holding portion is loaded into the main body and a position where the cassette held by the holding portion can be taken out, and the capstan of the main body. And a damper mechanism 66 that is disposed between the rear surface 62A that is substantially parallel to the extending direction of the support shaft 55 of the main body and that suppresses the turning force of the holder 22, and the support shaft 55 of the holder 22 in the holder 22. The pin 60 provided in the parallel direction and the pin 60
The holder 22 is rotated by a rotation mechanism that includes a transmission mechanism 74 that is disposed between the capstan of the main body and the rear surface 62A of the main body and that has a gear 70 that engages with the damper mechanism 66. At this time, by rotating the gear 70 with the pin 60, the rotational movement of the holder 22 is converted into the movement within a plane substantially parallel to the rear surface 62A of the main body and transmitted to the damper mechanism 66.

F action A damper mechanism is installed between the capstan of the main body and the rear surface of the main body.
66 is arranged, and the rotational movement of the holder 22 is transmitted by the transmission mechanism.
By transmitting the force to the damper mechanism 66 via 60 and 74B and suppressing the force, the damper mechanism of the holder 22 can be formed while effectively utilizing the space behind the capstan, and the overall shape can be reduced accordingly. You can

G Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a digital audio tape recorder as a whole, which can be driven by a battery connected to the back surface so that the user can carry the music in a place where power cannot be obtained and enjoy music. ing.

Further, in this digital audio tape recorder 1, a plurality of operators 2A to 2G for ejecting, reproducing, recording, fast-forwarding, rewinding, etc. are arranged on the front portion of the upper surface, and a power switch 4, an earphone jack 6, and a volume are arranged on the front surface. Operators 8 and 10 for adjustment and recording level adjustment are arranged. As described above, in the digital audio tape recorder 1, the frequently used operators 2A to 2G, 8, 10 and the like are intensively arranged on the front surface and the front surface of the upper surface.

On the other hand, the input / recording mode switching switches 12 and 14 and the like, which are less frequently used, are arranged on the side surface of the digital audio tape recorder 1 together with the microphone input terminal 16 and the like.

In this way, in this digital audio tape recorder 1, each operator or the like 2A becomes smaller as the device becomes smaller.
~ 2G, 8 and 10 are efficiently arranged in the area where they can be arranged, so that it is possible to effectively avoid the deterioration of the operability due to the reduction of the manipulators 2A to 2G, 8 and 10. There is.

The upper surface of this digital audio tape recorder 1 is covered with a lid 20, and the lid 20 is a discharge operator 2A.
It can be opened by pressing.

Actually, the upper lid 20 is screwed into the screw holes 22A and 22B of the cassette holder 22, and as shown by the arrow a in conjunction with the rotating operation of the free end side (front side in FIG. 1) of the cassette holder 22. It is designed to be rotatable.

The cassette holder 22 includes a lower plate 24 having a U-shaped cross section and an upper plate.
It is formed by screwing 26 with screws 26A, 26B,
The tape cassette can be loaded in a predetermined position by rotating the tape cassette in a holding portion formed by a rectangular area surrounded by the lower plate 24 and the upper plate 26 in a state where the tape cassette is housed.

Further, the cassette holder 22 uses the cassette pressing members 28A and 28B provided on both sides of the upper plate 26, and the cassette pressing member 44 provided at the center back of the upper plate 26 to remove the tape cassette in the holding portion from the lower plate 24. It is designed so that it can be pressed to the side,
As a result, the tape cassette can be fixedly held at a predetermined position in a predetermined state.

Further, a display panel is provided between the cassette holder 22 and the lid 20.
47 is arranged, and the lid 20 is provided with a window 48 covered with a transparent member 49 corresponding to the display panel 47.

As a result, in the digital audio tape recorder 1, the user can display the display panel through the window 48 of the lid 20.
47, the operation mode of the digital audio tape recorder 1 and the remaining tape amount of the tape cassette can be confirmed.

Actually, as shown in FIG. 2, the cassette holder 22 has both sides extending toward the base end, which is the rear side of the lower plate 24, and its root portion is fixed to the case 50 main body. It is rotatably supported by a support shaft 55.

That is, in the digital audio tape recorder 1, the base 52 is housed in the case 50,
A rotary drum 53 and the like are mounted on 52. Also base 52
Support the first support member 54 in an upright state on both side surfaces, and a support shaft 55 is fixed to the rear end portion of the first support member 54.

As a result, the cassette holder 22 can freely rotate with respect to the main body of the digital audio tape recorder 1 about the support shaft 55 in the direction indicated by the arrow b.

Further, in the cassette holder 22, the torsion spring 56 inserted into the support shaft 55 is urged in the direction of opening from the main body of the digital audio tape recorder 1, and thus the discharge operator 2A is pressed. By removing a stopper (not shown), the tape cassette in the holding portion can be rotated to load or eject.

Further, in the vicinity of the support shaft 55 of the base 52, a second support member 58 is provided inside the lower plate 24 so as to face the first support member 54.
Is fastened with screws 58A and 58B, and a stopper portion 58C is provided on the upper portion of the second supporting member 58, and thus the cassette holder 22 is supported by the stopper portion 58C of the second supporting member 58. The amount of rotation of the is restricted.

On the other hand, inside the lower plate 24 in the vicinity of the support shaft 55, the pins 60 are arranged so as to stand upright, thus the cassette holder.
By rotating 22 the pin 60 can be moved in the vertical direction as shown by the arrow c.

On the other hand, substantially circular through holes 52A and 52B are formed in the vicinity of the support shaft 55 of the base 52, and the capstan and the guide pin are arranged so as to penetrate the through holes 52A and 52B, respectively. It is done like this. The second
In the drawing, the capstan and the guide pin are omitted.

Furthermore, the base 52 has a capstan and a back plate of the base 52.
A third support member 62 having an L-shaped cross section is screwed between the second support member 62 and the base plate 52C and the back plate of the base 52 and the third support member 62.
An input / output circuit 64 of a magnetic head is arranged so as to face each other with 52C interposed therebetween.

In this case, the third support member 62 is held so that the rear surface portion 62A planted in an L shape is substantially parallel to the extending direction of the support shaft 55, and the damper mechanism 66 is arranged on the rear surface portion 62A. ing.

As shown in FIG. 3, the damper mechanism 66 has a cylindrical gear guide 68 and a gear 70 that are attached to the back surface portion 62A of the third support member 62 using screws 72. In this case, the gear guide 68 is fixed to the rear surface portion 62A of the third support member 62 by a screw 72 so as not to rotate, while the gear 70 is rotatably supported by the screw 72.

In addition, the contact surfaces of the gear guide 68 and the gear 70 are formed with concavo-convex concavities and convexities so as to increase the contact area, and grease is applied to the contact surfaces. Thus, the rotation of the gear 70 can be suppressed.

Similarly, a cam body 74 having a gear guide 76 and a gear portion 74A is attached to the back surface portion 62A of the third support member 62 by using a screw 78, as is apparent from FIGS. 2 and 3. ing. In this case, the gear guide 76 is fixed to the rear surface portion 62A of the third support member 62 by a screw 78 so as not to rotate, while the cam body 74 is rotatably supported by the screw 78.

Further, concavities and convexities are concentrically formed on the contact surfaces of the gear guide 76 and the cam body 74 so as to increase the contact area, and grease is applied to the contact surfaces. The viscosity allows the rotation of the cam body 74 to be suppressed.

Thus, the damper mechanism 66 can suppress the rotational force of the cassette holder 22 in the rotational direction between the back plate 52C of the base 52 and the capstan.

Further, in the cam body 74, the gear portion 74A as described above is formed substantially in the half circumference of the tip end portion on the gear 70 side, while the engaging portion with the pin 60 is formed in the remaining half circumference portion. .

Actually, this engaging part is a groove 74B with a cross section of a rugged shape,
It is formed on the pin 60 side in parallel with the screw 78. As a result, the cam body 74 can engage with the pin 60 in the groove 74B so as to mesh with the pin 60.

Thus, this digital audio tape recorder 1
When the cassette holder 22 is rotated, the pin
Although 60 moves in the vertical direction and gives a rotational force in the directions indicated by arrows d and e to the gear 70 and the cam body 74, the rotation of the gear 70 and the cam body 74 is suppressed by the above-mentioned grease or the like. Moreover, the rotation of the cassette holder 22 is also suppressed.

Therefore, in this digital audio tape recorder 1, when the ejecting operator 2A is pressed, the damper mechanism 66 suppresses the rotation of the cassette holder 22, and the lid 20 can be opened smoothly. It is made possible.

Further, in this digital audio tape recorder 1, by arranging the damper mechanism 66 between the capstan and the back plate 52C of the base 52, the space behind the capstan can be effectively used, and the digital audio tape recorder 1 can be used correspondingly. The shape can be reduced.

Here, in practice, in the conventional digital audio tape recorder, the damper mechanism is arranged at the back of the support shaft so that the support shaft, which is the rotation center of the cassette holder 22, and the rotation shaft of the damper mechanism are parallel to each other. It was done.

However, such an arrangement inevitably increases the depth of the digital audio tape recorder and thus increases the overall size.

On the other hand, the position of the back plate 52C at the rear of the capstan is determined by the stopper of the guide pin that winds the magnetic tape around the rotating drum 53, etc.
It was possible to avoid wasting space between the 52 back plates 52C.

However, as in this embodiment, if the rotational movement of the cassette holder 22 is converted into the movement in the plane substantially parallel to the support shaft 55 and transmitted to the damper mechanism 66, the capstan and the back plate 52C of the base 52 are converted. The damper mechanism 66 can be arranged in a useless space between the two.

As a result, the damper mechanism 66 is used to set the cassette holder.
It is possible to suppress the rotational movement of the cassette 22, and it is possible to smoothly rotate the cassette holder 22 by effectively utilizing the space behind the capstan.

Thus, the pin 60 and the groove 74B of the cam body 74 convert the rotational movement of the cassette holder 22 into a movement in a plane substantially parallel to the support shaft 55 and transmit the movement to the damper mechanism 66, and the rotational force to the damper mechanism 66. It constitutes a transmission mechanism for giving.

According to the above configuration, the rotational movement of the cassette holder 22 is transmitted to the damper mechanism 66 arranged at the rear of the capstan via the transmission mechanism including the pin 60 and the groove 74B, so that the space behind the capstan becomes effective. By utilizing this, the rotational movement of the cassette holder 22 can be suppressed, and the shape of the digital audio tape recorder can be reduced accordingly.

In the above-mentioned embodiment, the transmission mechanism for transmitting the rotational movement of the cassette holder 22 to the damper mechanism 66 is composed of the pin 60 and the groove 74B of the cam body 74. Not only, but when using a cam, etc.
Various transmission mechanisms can be widely applied.

Further, in the above embodiment, the gear holder 68 and the gear
The case where the rotation of the cassette holder 22 is suppressed by the viscosity of the grease applied to each contact surface of the gear 70 and each contact surface of the gear holder 76 and the cam body 74 has been described, but the present invention is not limited to this. Various damper mechanisms can be widely applied.

In this case, the rotary motion of the rotary part associated with the vertical movement of the cassette holder may be transmitted to the damper mechanism via the transmission mechanism having a predetermined structure.

Further, in the above-mentioned embodiment, the case where the present invention is applied to the portable digital audio tape recorder 1 has been described, but the present invention is not limited to this, and the stationary digital audio tape recorder, and further the digital audio tape recorder. Not only audio tape recorders, audio signals on magnetic tape stored in cassette tape,
It can be widely applied to magnetic recording / reproducing devices for recording / reproducing various signals such as digital signals.

H Effect of the Invention As described above, according to the present invention, the rotational movement of the holder is transmitted to the damper mechanism arranged at the rear of the capstan via the transmission mechanism, and the rotation of the holder is suppressed in the damper mechanism. Thus, the space behind the capstan can be effectively used to suppress the rotational movement of the holder, and a magnetic recording / reproducing device can be obtained which can be downsized by utilizing the space behind the capstan.

[Brief description of drawings]

FIG. 1 is a perspective view showing a digital audio tape recorder according to an embodiment of the present invention, FIG. 2 is a perspective view showing a detailed structure of the cassette holder, and FIG. 3 is a sectional view showing a damper mechanism. 1 …… Digital audio tape recorder, 20 ……
Lid, 22 ... cassette holder, 60 ... pin, 66 ... damper mechanism, 74B ... groove.

Claims (1)

(57) [Scope of utility model registration request] 1. A holding portion for holding a cassette is provided on a free end side, and a base end side is supported rotatably with respect to a main body about a predetermined support shaft and is held by the holding portion. A holder that rotates between a position where the cassette is loaded in the main body and a position where the cassette held by the holding portion can be taken out, a capstan of the main body, and an extension of the support shaft of the main body. The damper mechanism that suppresses the rotational force of the holder and that is disposed between the rear surface and the rear surface that is substantially parallel to the direction in which While being rotated,
A transmission mechanism having a gear disposed between the capstan of the main body and a rear surface of the main body and engaging with the damper mechanism; and when the holder is rotated, the pin rotates the gear. A magnetic recording / reproducing apparatus characterized in that the rotational movement of the holder is converted into a movement in a plane substantially parallel to the rear surface of the main body by the dynamic operation and is transmitted to the damper mechanism.