JPS6040503A - Magnetic recorder - Google Patents

Abstract

PURPOSE:To facilitate easy production together with reduction of the cost for a magnetic recorder by using plural spring members fixed to a rotary disk or an upper cylinder to transmit signals for a head base plate and an upper rotary transformer base plate. CONSTITUTION:A spring member 15 is attached to an upper cylinder 5 by a screw 18 and pressed to an upper rotary transformer base plate 20. Cords 16 and 19 are used for connection between a head 1 and a head base plate 3 and between the base plate 3 and a spring terminal 18 respectively. Furthermore the base plate 20 is connected to an upper rotary transformer 10 by a cord 21. Thus the cylinder 5 and a rotary disk 6 are revolved around a main shaft, and the signals of a tape are read by a head chip and transmitted to the base plate 10 and the transformer 10 from the member 15 through the base plate 3. In such a way, the production of a magnetic recorder is facilitated with reduction of the cost.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for transmitting signals from a head chip of a part of an upper cylinder in a magnetic recording device to an upper rotary transformer.

1- In a conventional device of this type, as shown in FIG. 3, a head base 2 has a head chip l on one side, a head substrate 3 on the other side, and is fixed to an upper cylinder 5 with screws 4. The head chip 1 and the head substrate 3 are connected by a cord 16.

A hole is made in the upper cylinder 5 and a cord 13 connects the head board 3 and the upper cylinder circuit board 9. A groove is cut in the rotary disk 6, and a cord 14 wired in the groove connects the upper cylinder circuit board 9 and the upper rotary transformer lO. With the above structure, the head chip l reads the tape signal, and the p1 head board 3. Upper cylinder circuit board9. Transmits signals to the upper rotary transformer lO. The upper rotary transformer lO performs a known function of transmitting signals to the lower rotary transformer 11 by electromagnetic conduction.

The above configuration had the following drawbacks. In other words, (11) One or more holes for cord wiring had to be made in the upper cylinder and rotating disk.

2- When replacing the 121 upper cylinder, it was necessary to attach and remove the solder joint between the cord from the upper cylinder head and the upper cylinder circuit board.

Wiring in and out of the 131 cord is time-consuming.

Since a hole for pulling out the 141 cord had to be made in the upper cylinder, the upper cylinder became unbalanced and the inertia decreased.

(5) Saturday and Sunday - Because of the wiring from the tally to the upper cylinder, measures had to be taken to ensure coaxiality between the rotating disk and the upper cylinder.

(It took a lot of effort to remove the grooves on the 61-rpm disc.

etc.

The present invention seeks to solve these drawbacks,
One embodiment will be described in detail below with reference to the drawings. (Example in which the spring is provided in the upper cylinder) In sectional view 1 showing an embodiment of the present invention and sketch 2 of the vicinity of the rad base to the upper cylinder, the upper cylinder 5 and the rotating disk 6 are fixed by screws 17. . The head base 3 has a head chip 3-1 and a head board 3 attached to the upper cylinder.
However, the spring member 15 is attached to the screw 4 by a screw 18.

A cord 16 connects the head 1 to the head substrate 3, and a cord 19 connects the head substrate to the spring terminal 18.

Note that an insulator 22 is sandwiched under the spring member so that there is no electrical conduction between the upper cylinder and the spring member, and the screws are made of an insulating material such as plastic. A rotating disk 6 is firmly fixed to the main shaft by shrink fitting or the like.
An upper rotary transformer 10 and an upper rotary transformer board are bonded perpendicularly to the main shaft. Upper rotary transformer board addition and upper rotary transformer 10 barcode 2
It is connected from 1.

A lower rotary transformer 11 is glued to the lower cylinder perpendicularly to the main shaft so as to maintain a gap with the upper rotary transformer 10 when combined with the rotating disk section.

Due to the wiring structure of the present invention, when a part of the upper cylinder and the rotary disk part are connected, the spring member is pressed against the upper opening 4-1 and the tally force board (by the spring force), thereby making electrical conduction possible.

Therefore, part of the upper cylinder and the rotating disk rotate around the main shaft, and the head chip 1 reads the signal from the tape.
, from the spring member 15 through the head base board 3 to the upper rotary transformer board, and then to the upper rotary transformer lO.
The wiring structure that transmits the information is completed.

The implementation of the present invention has the following effects.

(1) Cost can be reduced by eliminating the upper cylinder wiring hole.

(2) Since the connection is made by pressure welding the spring member, there is no need for soldering when replacing the upper cylinder.

13) The head board and the upper rotary transformer board are connected by connecting the upper cylinder part and the rotating disk part, which requires no effort.

(4) Since the upper cylinder wiring hole is eliminated, no lance occurs and inertia does not decrease.

151 5 from the upper rotary force to the upper cylinder
- Since no wiring is required, there is no need to provide a groove for the cord on the rotating disk, and the disk ring can be eliminated.

(By eliminating the upper cylinder circuit board that was essential to the upper surface of the 61 upper cylinder, the upper surface can be made cleaner.

(The 71-rpm disc has no wiring grooves and no burrs.

+5n Since the cord is not exposed on the top surface, there is no need to worry about cutting the cord, which is desirable for safety reasons.

It has many advantages such as, and has great practical effects.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an embodiment of the device of the present invention, Fig. 2 is a sketch of the upper cylinder and the vicinity of the rad base in Fig. 1, and Fig. 3 is a sectional view of a conventional example. Head base 3 is a base board, 5 is an upper cylinder, 6 is a rotating disk, 1 () is an upper rotary transformer, and 15 is a spring member. Above 61

Claims (1)

[Claims] In a magnetic recording device, an upper cylinder is provided with a head chip and a head substrate that receives signals from the head chip, a rotating disk fixed to a main shaft is provided with an upper rotary force and an upper rotary transformer substrate, and a rotating disk body or upper cylinder is provided with an upper rotary force and an upper rotary transformer substrate. A connection structure between a cylinder head and a rotary transformer in a magnetic recording device, characterized in that a plurality of integrally fixed spring members are used to transmit signals between a head board and an upper rotary transformer board.