JPH03185613A - Rotary drum device - Google Patents

Abstract

PURPOSE:To shorten a signal line between a stator part and a drum drive circuit and to improve the degree of freedom of the connection position of the signal line by providing the stator part of a drum motor directly on a base chassis. CONSTITUTION:The rotor part 14B of a drum motor 14 is arranged on the drum shaft 18 of a rotary drum 10, and the stator part 14A of the drum motor 14 is arranged on a base chassis 22. And, the signal lines to the stator part 14A is laid, and a lower drum 12 is fixed on the base chassis 22 so that the rotor part 14B comes opposite to the stator part 14A. That is, the stator part 14A of the drum motor 14 is arranged directly on the base chassis 22. Then, the wiring of the signal line of the stator part 14A and a drum drive circuit becomes easy. Thus, the assembly work of the signal line is not hindered when assembling the rotary drum device, and the harness for connecting the signal line after the assembling is completed becomes unnecessary.

Description

DETAILED DESCRIPTION OF THE INVENTION: Industrial Application Field The present invention relates to a rotary drum device with two parts, particularly a rotary drum device in which a drum motor is integrally provided.

Prior Art] FIG. 3 is a sectional view showing an example of a conventional rotating drum device. As shown in the same figure, this rotating drum device is
A rotating drum l mainly equipped with a magnetic helad IA,
It consists of a lower drum 2, a drum motor 3, and a rotary transformer 4.

A stator section 4A of a rotary transformer 4 and a stator section 3A of a drum motor 3 are disposed on the upper and lower surfaces of the lower drum 2, respectively, and a drum shaft 5 having an integrated shaft bearing is rotatably mounted on the lower drum 2. It is located in Furthermore, the rotor portion 4B of the low retransistor 4 and the rotor B3A of the drum motor 3 are disposed on the upper and lower shaft portions of the drum shaft 5, respectively.

The rotating drum device having the above configuration is disposed on a base chassis 7 via a drum pace 6.

[Problem to be solved by the invention]

By the way, in the above conventional rotating drum device, the signal line 3 for driving the drum motor is connected from the stator section 3A of the drum motor 3.
C extends, and this signal line 3C is connected to the motor drive circuit (
(not shown), the signal line 3C deteriorates assembly workability during assembly and also becomes an obstacle to miniaturization.

The present invention has been made in view of the above circumstances, and provides a rotating drum that can shorten the signal line between the drum motor and the drum drive circuit, improve the degree of freedom in the signal line connection position, and facilitate assembly work. The purpose is to provide equipment.

[Means to solve problems]

In order to achieve the above object, the present invention disposes a rotor section of a drum motor on a drum shaft of a rotary drum which is disposed rotatably with respect to a lower drum, and a stator section of the drum motor on a base chassis. The present invention is characterized in that a signal line is laid to the stator section, and the lower drum is fixed on the bassin palm so that the rotor section of the drum motor faces the stator section.

[Effect]

According to the present invention, since the stator section of the drum motor is directly disposed on the base chassis, wiring of signal lines between the stator section and the drum drive circuit becomes easy. The wiring pattern can be laid on the base yarn in advance.

Therefore, when assembling the rotary drum device, there is no need for the signal wires to interfere with the assembly work, and there is no need for a harness for connecting the signal wires after the assembly is completed. Note that the drum axis of the rotating drum device is perpendicular to the base chassis.

[Embodiment 2] A preferred embodiment of the rotary drum device according to the present invention will be described in detail below in accordance with the grading drawings.

FIG. 1 is a cross-sectional view showing an embodiment of the rotary drum device according to the present invention, and FIG. 2 is an exploded cross-sectional view of essential parts of the rotary drum device shown in FIG.

As shown in the given drawing, this rotating drum device mainly includes a rotating drum 10, a lower drum 12, and a drum motor 1.
4 and a rotary transformer 16.

A drum shaft 18 is rotatably disposed on the lower drum 12 via a shaft-integrated bearing 20, and a stator portion 16A of a rotary transformer 16 is fixedly disposed on the upper surface of the lower drum I2. . Note that 16C is a signal line connected to the winding of the stator section t6A.

A flange member 16D and a rotary drum lO, on which the rotor 116B of the rotary tons 16 is disposed on the lower surface, are inserted into the upper shaft portion of the drum shaft 18, and the flange it;
t l 6 D is fixed to the drum shaft 18 by screws 16E, and the rotating drum 10 is fixed to the flange member 16D by screws 18B. In addition, the rotating drum lO
A magnetic head 10A is disposed in the magnetic head IOA, and this magnetic head IOA is electrically connected to the rotor portion 16B of the rotary transformer 16.

Further, a drum motor 1 is attached to the lower shaft portion of the drum shaft 18.
The rotor portion 14B constituting the rotor portion 1 is inserted through the rotor portion 14B.
4B is fixed to the drum shaft 18 by a screw 14C.

As described above, the main body of the rotating drum device is constructed as shown in FIG.

On the other hand, a pattern of signal lines (not shown) for driving the drum motor is printed on the base chassis 22, and a stator i of the drum motor 14 is printed on the base chassis 22.
%14A is arranged and connected to the pattern-printed signal line.

As shown in FIG. 2, the main body of the rotating drum device is directly positioned and mounted on the base palm 12, and the lower drum 12 is screwed to the base chassis 22. At this time, the rotor portion 14B of the main body of the rotating drum apparatus and the stator B14 on the pace shear 22 face each other with a predetermined interval, thereby forming the drum motor 14.

In this embodiment, a pattern printed base chassis is used, but the present invention is not limited to this, and a flexible wiring pattern may be laid on the base chassis. Further, the stator portion of the capstan motor may be provided directly on the base palm as in this embodiment, and furthermore, the stator portion of the rotary transformer of the rotating drum device may be provided on the base/year/top. 5).

〔Effect of the invention〕

As explained above, according to the rotating drum device according to the present invention, the stator section of the drum motor is directly installed on the basing wheel, so that the signal line between the stator section and the drum drive circuit can be shortened. , it is possible to improve the degree of freedom in the signal line connection position.In addition, since one signal line is not connected to the main body of the rotating drum device, there is a problem that the signal line impedes assembly workability. disappears.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of a rotating drum device according to the present invention, FIG. 2 is an exploded sectional view of a main part of the rotating drum device shown in FIG. 1, and FIG. 3 is an example of a conventional rotating drum device. FIG. IO...rotating drum, 10A...magnetic head,
12... Lower drum, 14... Drum motor, 1
4A... Stator part, 14B... Rotor part,
16...Rotary transformer, 8...Drum shaft,...Base chassis.

Claims (1)

[Scope of Claims] A rotor section of a drum motor is disposed on a drum shaft of a rotating drum rotatably disposed with respect to a lower drum, and a stator section of the drum motor is disposed on a base chassis. A rotating drum device characterized in that: a signal line is also laid to the stator section, and the lower drum is fixed on a base chassis so that the rotor section of the drum motor faces the stator section.