JPS61222015A - Magnetic head device - Google Patents

Abstract

PURPOSE:To eliminate the need for troublesome operation at assembling of the titled device and replacement of the head by using an elastic contact member to apply electric connection between the head and the input/output member. CONSTITUTION:Head bases 2, 2' fixed to magnetic heads 1, 1' are assembled to an upper cylinder 6 and an upper rotor 3 of a rotary transformer is connected by a relay ring 4 having an elastic conductive member 5, then since the member 5 has elasticity, the member 5 is pressed to a contact 8'' of the pattern 8 on the bases 2, 2' for electric connection. Thus, it is not required for the electric connection between the coil input/output terminal of the magnetic head and the input/output member (rotary transformer) to the head in the magnetic head assembled in such way for soldering or the like, the replacement of the magnetic head or the assembling of the magnetic head device are much simplified, ease or work is attained and the damage to the coil due to heat is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic head device, and particularly to an electrical connection between the magnetic head and an input/output member for the head.

[Summary of disclosure]

This specification and drawings relate to a magnetic head device.

This invention discloses a technology that allows electrical connection between the magnetic head and the input/output member to be easily established by making the electrical connection between the magnetic head and the input/output member using an elastic contact member. .

[Conventional technology]

In conventional magnetic recording and reproducing devices such as tape recorders, the coil of the magnetic head is once electrically connected to an input/output terminal using solder, etc., and then the input/output terminal and the input/output to the magnetic head are The circle is electrically connected to the signal line using solder or crimp terminals.

In addition, in a magnetic recording/reproducing device using a rotating head device such as a VTR, the coil of the magnetic head of the skeleton rotating head device is soldered to a connection terminal provided on the head base to which the magnetic head is fixed. After electrical connection has been made by using a lead wire or the like, the connection terminal and an input/output member such as a rotary transformer are connected by soldering using a lead wire or the like.

[Problem that the invention seeks to solve]

In this conventional method, a system with a magnetic head built into the device,
When replacing it, it requires work such as soldering, which makes it less workable. Since a soldering iron or the like is used in these operations, the coils of the magnetic head are not easily damaged by heat, and there are many difficulties in assembling the device or replacing the head.

In addition, in a rotating head device such as a VTR, a magnetic head coil and a rotary transformer are connected to the head.
Since the lead wires are connected through the base, space and holes are required for routing the lead wires in the cylinder unit of the rotary head device.
The structure of the unit is complicated, which impedes miniaturization, and as mentioned above, the work involved in assembling the rotating head device and replacing the head is complicated, and the coil is easily damaged by heat. Ta.

The present invention has been made in view of such circumstances.

It is an object of the present invention to provide a magnetic head device that has a simple configuration and does not require complicated work when assembling the device or replacing the head.

[Means for Solving the Problem] The magnetic head device of the present invention includes a support member, a magnetic head supported by the support member, an input/output member for the head, and an electrical connection between the head and the input/output member. and an elastic contact member for making a physical connection.

[Effect]

By making the electrical connection between the magnetic head and the input/output member for the head using the elastic contact member, complicated work is not required.

〔Example〕

Examples of the present invention will be described below.

FIG. 1 shows an embodiment in which the present invention is applied to a rotary head device for a VTR.

In FIG. 1, 1 and 1' are magnetic heads, 2 and 2' are head paces that fix the magnetic head 1.1', and 3 is a head pad that connects input/output signals from the magnetic head 1.1' to the outside of the head. The upper rotor of the input/output rotary transformer, 4 is a relay ring that electrically connects the magnetic head 1.1' and the upper rotor 3 of the rotary transformer, 5 is a part of the relay ring 4, and the actual An elastic conductive member 6 is connected to a contact point on the head base 2.2', and 6 is fixed to the magnetic head 1.1', the head pace 2.2', and the upper rotor 3 of the rotary transformer. This is the upper cylinder.

Figures 2 and 3 show the relay ring 4 shown in Figure 1, respectively.
and elastic conductive member 5. As shown in a top view and a side view, an elastic conductive member 5 extends from the relay ring 4, and is electrically connected by contacts on the head spaces 2, 2'. That's why.

Further, since the elastic conductive member 5 has elasticity, the contact points on the head bases 2, 2I can be pressed by pressing the member 5 against the contact points using the elasticity of the member 5.
It looks like it will be joined.

FIG. 4 is a diagram showing the magnetic head 1 and head base 2 of FIG. In FIG. 4, a 1iB air head 1 is fixed to a head pace 2).

The input and output ends of the coil 7 of the magnetic head 1 are connected to the head.
The contacts 8' of the pattern 8 on the base 2 are seamlessly connected by soldering or the like. Note that magnetic heads 1 and 1',
Since the head bases 2 and 2' are the same, FIG. 4 shows the case of the magnetic head 1 and the head base 2.

Here, referring to FIG. 1, as an embodiment of the present invention, a fixed head space 2.2' of a magnetic head 1.1' as shown in FIG. 2
．． - When connecting the upper rotor 3 of the rotary transformer with the relay ring 4 having the elastic conductive member 5 as shown in FIG. Pattern 8 on .2'
The pressing force is electrically connected to the contact point 8'' of Therefore, the elastic conductive member 5 should have the elasticity to press the contact point with just the right amount of pressure. Also, the contact point 8'' will remain in contact with the elastic conductive member 5 even if the position of the relay ring 4 is slightly shifted. It has enough space to accommodate.

The magnetic head device assembled in this way includes the input/output end of the coil of the magnetic head and the input/output member for the magnetic head (
Because there is no need for work such as soldering to electrically connect the rotary transformer, replacing the magnetic head and assembling the magnetic head device is extremely simple. There is no need to worry about damage.

In addition, in the embodiments, a rotary magnetic head having two magnetic heads has been described using a rotary head having two magnetic heads as an example, but the rotary head is not limited to two, and may have a plurality of three or more. This is also possible, especially in recent cases where VTRs use standard mode, long mode, multi-mode such as slow motion and still playback, and high-fidelity audio, where a large number of Shiherides are used. The present invention is extremely effective.

In addition, although the elastic conductive member 5 in the example has elasticity, the member itself does not need to have elasticity as in the example, and the conductive member can be pressed using an elastic body such as a spring. You can also do it like this.

Further, in the embodiment, a relay ring having an elastic conductive member is provided on the upper rotor side of the rotary transformer, but an elastic conductive member may be provided on the head pace side to which the magnetic head is fixed for connection.

[Other Examples]

Although the embodiment has been described above using a rotary head device in a VTR as an example, the present invention can also be used in other magnetic head devices other than the rotary magnetic head device.

Below, as another embodiment, an example in which the present invention is applied to a fixed magnetic head device will be shown.

FIG. 5 shows an example in which the present invention is applied to a fixed magnetic head device.

In FIG. 5, 9 is a magnetic head, 10 is an input/output contact of the magnetic head, 11 is a lead wire for inputting/outputting an input/output signal from the magnetic head 9 to the outside of the head, and 12 is a connection between the magnetic head 9 and the It is a relay board that electrically connects the lead wire 11, and 9.13 is a contact provided on the relay board 12;
14 is an elastic conductive member that is actually connected to the input/output contact lO on the head, 15 is a head block that supports the magnetic head 9 and the relay plate 12, and the magnetic head 9 and the relay plate 12 are attached. Screw 16 for head block 15
is fixed.

6 and 7 respectively show the relay plate 12 shown in FIG.
1 shows a top view and a side view of the elastic conductive member 14 and the lead wire 11, and the elastic conductive member 14 is connected to the relay plate at the contact point 13 provided on the relay plate 12. The lead wires 11 are also electrically connected at the contacts 13.

Further, since the elastic conductive member 14 has elasticity,
The member 14 is connected to the input/output contact 10 on the head by pressing the member 14 using the elasticity of the member 140.

FIG. 8 is a diagram showing the magnetic head 9 of FIG. 5 and the input/output contacts 10 provided on the magnetic head 9.

In the eighth factor, reference numeral 10 denotes an input/output contact of the magnetic head 9, and this contact is electrically connected to the coil of the magnetic head 9 inside the magnetic head 9. This means that the conductive member 14 is electrically connected.

Referring now to FIG. 5, when connecting the magnetic helad 9 as shown in FIG. 8 to the relay plate 12 having the elastic conductive member 14 as shown in FIG. Conductive member 1
Since the magnetic head 4 has elasticity, it is pressed against the input/output contact 10 on the magnetic head 9 to electrically connect it, and then the magnetic head 9 and the relay plate 12 are attached to the head base 15 using the screws 16. Attach it. The pressing force at this time needs to be within the elastic limit of the member 14, and since the mounting of the magnetic head 9 changes depending on the state, the elastic conductive member 14 has the elasticity to press the contacts with just the right pressure. Make sure to use the one that has been prepared. Further, the contact point 10 has a wide enough area to be connected to the elastic conductive member 14 even if the position of the relay plate 12 is slightly shifted.

In this way, work such as soldering is required to electrically connect the input/output wires from the magnetic head coil and the lead wires that input/output input/output signals from the magnetic head to the outside of the head. Therefore, it is possible to easily replace the magnetic head and to assemble the magnetic head in assembling a tape recorder, etc., and there is no need to damage the coil due to heat that is normally likely to occur in these operations.

In addition, although the elastic conductive member in the example has elasticity, as explained in the example, the member itself does not have to have elasticity, and an elastic body such as a spring can be used to conduct the conductive member. You can also force it.

Further, in the embodiment, the input/output contacts of the magnetic head are opposed to the surface on the side gap. That is, although the contacts are provided on the opposite surface, the contacts may be provided on the side surface perpendicular to the surface on the gap side, and a plurality of contacts may be provided for one input/output. In this case, for example, when the magnetic head is rotated as in an auto-reverse tape recorder, it is structurally more convenient to provide the contact on the side surface of the head.

Further, in the embodiment, the elastic conductive member is provided on the relay plate side, but it is also possible to provide the elastic conductive member on the magnetic head side. In this case, the elasticity of the elastic conductive member decreases, resulting in poor contact. Even in such a case, the head can be replaced or removed and the same member repaired, eliminating the need to repair the tape recorder main body.

In this case as well, the position on the head where the member is provided is not limited to the surface opposite to the gap side surface, but may be provided on the side surface.

〔Effect of the invention〕

As described above, the present invention has a simple configuration as a magnetic head device as described at the beginning, does not require complicated work during assembly or head replacement, and is extremely easy to work with. This is extremely useful in head devices.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention in which the present invention is applied to a rotary head device in a VTR. FIG. 2 is a top view of the relay ring having the elastic conductive member in FIG. 1. FIG. 3 is a side view of the relay ring having the elastic conductive member in item 111. FIG. 4 is a diagram showing the magnetic head in FIG. 1 and a head space for fixing the magnetic head. FIG. 5 is a block diagram of another embodiment of the present invention in which the present invention is applied to a fixed magnetic head device. 6 is a side view of the relay plate having the elastic conductive member shown in FIG. 5. FIG. FIG. 7 is a top view of the relay plate having the elastic conductive member in FIG. 5. FIG. 8 is a diagram showing the magnetic head in FIG. ag5 and the input/output contacts provided on the magnetic head. 1, 1', 9...magnetic head, 2.2'
...Head base. 4...Relay ring. 5.14...Elastic conductive member. 8', 8'...Contact, 10...
・Input/output contacts. 12... Relay board.

Claims (1)

[Claims] a support member; a magnetic head supported by the support member;
A magnetic head device comprising an input/output member for the head and an elastic contact member for electrically connecting the head and the input/output member.