JP2923735B2 - Rotating head cylinder device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary head cylinder device in which a motor substrate and a device substrate are integrated.

[0002]

2. Description of the Related Art Conventionally, there has been a rotary head cylinder device of this type as shown in FIG. In the prior art shown in FIG. 5, the same components as those of the present invention are denoted by the same reference numerals and described.

[0003] That is, conventionally, a rotary head cylinder device includes a rotary drum 1 having a built-in magnetic head 10 for recording and reproducing signals on a magnetic tape, a drum motor 2 for rotating the rotary drum 1, and a drum motor 2 for rotating the rotary drum 1. , A mechanical chassis 4 for mounting and fixing a drum unit 9 composed of the rotating drum 1, the drum motor 2 and the motor substrate 3, and a circuit component element for controlling the apparatus. And a device board 5 attached to and fixed to the mechanical chassis 4.

The drum unit 9 of the home VTR is inclined with respect to the vertical plane of the mechanical chassis 4. This is because the rotary head moves obliquely with respect to the magnetic tape when recording and reproducing the magnetic tape. For this reason,
Since the motor substrate 3 is also inclined with respect to the VTR device substrate 5 and it is difficult to integrate the two substrates, the connector 8 has been used to connect the two substrates.

[0005]

Therefore, in the rotary head cylinder device configured as described above, the motor substrate and the device substrate are separated, and it is necessary to connect the two substrates with a connector. For this reason, a connector is required as a part, which increases the material cost and the assembling processing cost, and is a great limitation in automation. In addition, there was a quality defect such as unstable conduction due to poor contact at the time of connection by the connector. SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and has an object to provide a rotary head cylinder device in which a motor board and an apparatus board are integrated, and the number of parts and the quality of connection between boards can be improved. Aim.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a rotating drum having a magnetic head for recording and reproducing signals on a magnetic tape, a drum motor for rotating the rotating drum, A motor board for supporting a stator of the drum motor; a mechanical chassis for mounting a drum unit including the rotary drum, the drum motor and the motor board; and a mechanical chassis on which circuit component elements for controlling the apparatus are mounted. In the rotary head cylinder device provided with the device substrate fixed to the motor substrate, the motor substrate and the device substrate are integrally formed by one substrate, and the motor substrate is inclined at a predetermined angle, and the drum unit is mounted on the mechanical chassis. By being worn, it constitutes a rotary head cylinder device. Further, the device substrate has cutouts for forming a motor substrate and a connection portion, and the connection portion has flexibility.

[0007]

According to the first aspect of the present invention, the motor substrate and the device substrate are integrated, and the motor substrate and the device substrate are wired in a pattern, so that a dedicated motor substrate is not required. Becomes Therefore, work such as mounting and wiring of a connector is not required, and conduction failure due to connection between boards is also eliminated. Further, according to the configuration of the second aspect, since the relay connecting portion between the motor board and the device board is made of a flexible material, the desired angle can be set freely.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a rotary head cylinder device according to the present invention will be described below with reference to the drawings. FIG.
3 to 3 show an embodiment of the present invention. FIG. 1 is a sectional side view showing a main part of an embodiment of a rotary head cylinder device according to the present invention, FIG. 2 is a front view showing an embodiment of a motor board according to the present invention, and FIG. FIG. 3 is a perspective view illustrating an example of a motor board.

1 to 3, a motor board 3 of an arbitrary shape and a motor board 3
A connection portion 6 for connection between the motor substrate 3 and the device substrate 5, and a boundary between the outer peripheral portions of the motor substrate 3 and the connection portion 6 and an inner peripheral portion on the device substrate 5. The cut 7 is formed except for the relay connection portion 12 which is the root. Further, one or a plurality of holes 13 necessary for assembling the motor stator portion into the motor substrate 3 are formed at predetermined positions. As shown in FIG. 3, a flexible material formed by bending the relay connection portion 12 is used for the relay connection portion 12 on the device substrate 5. Further, between the device board 5 and the motor board 3, drum motor wirings such as coils, Hall elements, FG, PG, etc. are wired in respective patterns via a connection section 6 and a relay connection section 12. Also, at this time, signal lines such as video head signals may be wired in a pattern as described above.

Next, as for assembling the device substrate 5 and the motor substrate 3, the stator portion of the drum motor 2 is incorporated into the motor substrate 3 and wired. Further, the device substrate 5 on which circuit component elements for controlling the device are mounted is assembled and fixed to the mechanical chassis 4 by screwing or the like, and the motor substrate 3 is bent in accordance with the inclination of the drum unit 9 as shown in FIG. It is lifted to draw and fixed to the mechanical chassis 4 by screwing or the like, and the drum unit components such as the rotor and the rotating drum 1 are assembled. That is, the drum unit 9
Is configured by arranging the drum motor 2 below the motor board 3 and the rotating drum 1 above the motor board 3.

Next, another embodiment of the present invention shown in FIG. 4 will be described. In the description of the different embodiments of the present invention, the same components as those of the above-described embodiments of the present invention will be denoted by the same reference numerals, and redundant description will be omitted. The stator portion of the drum motor 2 and the support 11 are mounted on the motor board 3 and wired. Further, the device substrate 5 on which circuit component elements for controlling the device are mounted is fixed to the mechanical chassis 4 by screwing or the like. Next, as shown in FIG. 4, in a state where the motor substrate 3 is inclined at a predetermined angle (for example, 12.5 °),
The support 11 implanted on the motor substrate 3 is assembled to the mechanical chassis 4 by screwing or the like. Here, the drum unit 9 includes the motor substrate 3, the drum motor 2 arranged on the upper part thereof, and the rotating drum 1 fixed on the upper part via a rotating shaft.

The wiring, the order of assembly, and which components of the drum unit are fixed to the mechanical chassis can be variously changed without departing from the present invention. With a rotary head cylinder device in which the motor substrate and the device substrate having the above configuration are integrated, a connector for connecting the substrates becomes unnecessary, and problems such as unstable conduction due to poor connector contact are eliminated.

[0013]

As described above, according to the present invention, the wiring for the drum motor such as the coil, the Hall element, the FG, and the PG can all be formed on the device substrate, and the connector for connecting the substrates can be eliminated and the rationalization can be achieved. At the same time, there is room for space. Further, since a motor substrate, which is a substrate dedicated to the drum motor, is not required, the cost of the substrate can be reduced, the workability of assembling the motor circuit can be improved, and the processing cost can be further reduced. Also, since the connector for connection between boards is not used,
There is no need to worry about poor conduction at the time of connection between the substrates, the quality is improved, and the contact resistance is also eliminated, so that a sufficient motor torque can be stably obtained.

[Brief description of the drawings]

FIG. 1 is a sectional side view showing a main part of an embodiment of a rotary head cylinder device according to the present invention.

FIG. 2 is a front view showing an embodiment of the motor board according to the present invention.

FIG. 3 is a perspective view showing an embodiment of a motor board according to the present invention.

FIG. 4 is a cross-sectional side view of a main part of a rotary head cylinder device showing a different embodiment of the present invention.

FIG. 5 is a cross-sectional side view of a main part showing an embodiment of a conventional rotary head cylinder device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rotating drum 2 drum motor 3 motor board 4 mechanical chassis 5 device board 6 connection section 7 cut 9 drum unit

Claims (2)

(57) [Claims] A rotary drum having a magnetic head for recording and reproducing signals on a magnetic tape; a drum motor for rotating the rotary drum; a motor substrate for supporting a stator of the drum motor; A rotary head cylinder device having a mechanical chassis for mounting a drum unit composed of a drum motor and a motor substrate, and a device substrate mounted with circuit component elements for controlling the device and fixed to the mechanical chassis. A rotary head cylinder device in which the motor substrate and the device substrate are integrally formed as a single substrate, and the motor substrate is inclined at a predetermined angle and the drum unit is attached to the mechanical chassis. 2. The rotary head cylinder device according to claim 1, wherein the device substrate has a notch for forming a motor substrate and a connection portion, and the connection portion has flexibility.