JPH0422410Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a rotating magnetic head device, and in particular, to an electrical connection related to a rotating magnetic head that can be easily and reliably made using a special connector member. It is an object of the present invention to provide a rotating magnetic head device having a configuration.

(Prior Art) FIG. 1 shows the structure of an example of a conventional general rotating magnetic head device. In the figure, a rotating magnetic head device 1 includes a lower fixed drum 2 and an upper rotating drum 3.
It becomes more. The rotating drum 3 is fitted onto the rotating shaft 4 and screwed to a flywheel 5 which is fixed to the rotating shaft 4. A head support 7 having a rotating magnetic head 6 at its tip is mounted on the lower surface of the rotating drum 3.
is fixed with screws 8. The magnetic head 6 rotates integrally with the rotary drum 3, and records and reproduces video signals onto a magnetic tape 9 that runs along the circumference of the drum in a spiral manner.

(Problem to be solved by the invention) Here, the signal transmission between the rotating magnetic head 6 and the external recording/reproducing circuit is carried out by the rotary transformer 1.
This is done via a well-known signal transmission unit such as a zero or slip ring. In particular, the electrical connection between the magnetic head 6 and a signal transmission section such as the rotary transformer 10 is made by a lead wire once via a relay board. That is, as shown in FIG. 2, the first lead wire 11 has one end connected to the magnetic head 6 and the other end connected to the terminal 1 of the relay board 12 fixed to the upper surface of the drum.
3a and inserted into the through hole 3a of the drum 3, and a second lead wire 14 is connected to another terminal 13b of the relay board 12 and drawn out to the rotary transformer side. In this way, since lead wires are used for connection, troublesome terminal processing is required, such as stripping the insulation at both ends of the lead wires, twisting and positioning, and soldering of the lead wires is done manually for each lead wire. Moreover, it is necessary to handle the lead wires and solder the wires carefully in a limited space, and the work as a whole requires skill and has poor workability. Moreover, it had the disadvantage of lacking reliability in electrical connection.

(Means for Solving the Problems) The present invention eliminates the above-mentioned drawbacks and provides a structure that allows easy electrical connections related to a rotating magnetic head. A connector member is constructed by embedding a conductive elongated connecting terminal member longitudinally in a connector body made of an insulating material with both ends protruding outward, and supporting a rotating magnetic head. With the tapered end inserted into the through hole of the rotating drum to which the head support is attached, one end of the connection terminal member is electrically connected to the conductive member on the head support. The present invention provides a rotating magnetic head device in which the other end of the connecting terminal member is connected to a signal transmitting section to establish electrical connection between the rotating magnetic head and the signal transmitting section.

Further, a planar guide portion was provided on one side of the connector body, and the planar guide portion was used as an insertion guide surface into the through hole of the rotating drum.

(Embodiment) An embodiment of the rotating magnetic head device according to the present invention will be described below with reference to the drawings.

FIG. 3 shows an embodiment of the rotating magnetic head device according to the present invention. In the figure, the same components as those shown in FIG. 1 are denoted by the same reference numerals, and the explanation thereof will be omitted. In this rotating magnetic head device 20, 2
Reference numeral 1 denotes a connector member which is an important part of the present invention, and is fitted into a hole 3a of a rotary drum 3, and a relay board 12, which was conventionally provided, is not provided.

As shown in FIGS. 4A, B, and C, the connector member 21 has a structure in which conductive terminal members 23a and 23b are embedded in a connector body 22 made of synthetic resin. The connector main body 22 is shown in FIG.
As shown in B and C, it is a columnar body with a substantially semicircular cross section, and has a pair of slits 22a, 22 in the longitudinal direction.
b are formed at predetermined intervals, and the lower end is a tapered surface 22c. The terminal member 23a is the sixth
The terminal member 23b, which is an elongated flat plate member with a bent arm at one end shown in FIGS. They are flat plate members each having a main body portion 23.
a-1 and 23b-1 are press-fitted and fixed into the slits 22a and 22b, and their upper and lower ends protrude to the outside, respectively. That is, the connector member 21 is
A pair of arm portions 23a- are provided on the upper side of the connector body 22.
2 and 23b-2 protrude to the right and left, and terminal portions 23a-3 and 23b-3 protrude from the lower side. Here, arm portions 23a-2, 23b
-2 has protrusions 23a-2a, 23b-2a at the tip
, and is inclined obliquely downward at an angle α with respect to the horizontal plane H.

As shown in FIG. 8, the connector member 21 is press-fitted into the through hole 3a from the lower surface (in FIG. 3) of the drum 3 from the terminal side. Arrow X indicates the insertion direction. Here, the head support 7 is
a partially blocks the opening of the hole 3a, and the connector member 21 is guided by the end surface 7a on the planar guide portion 22d of the connector body 22, and the protrusions 23a-2a, 23b- in the rotation direction. 2a
are the conductive patterns 24 on the head support 7, respectively.
a, 24b and is inserted so as to face them. Further, insertion is easily performed due to the action of the tapered surface 22c.

As shown in FIG. 9, the connector member 21 is inserted until almost the entire connector body 22 is fitted into the hole 3a, and at the final stage of insertion, each terminal member 2
Arm portions 23a-2 and 23b-2 of arms 3a and 23b are engaged with the upper surface of the head support and are elastically deformed relatively upward to a horizontal position. Here, the connector main body 22 is press-fitted into the hole 3a, and even though a force is applied in the opposite direction to the insertion direction by the elastic force of the arm portions 23a-2 and 23b-2, it does not float up. It is stably held in the final insertion position. Therefore, when the connector member 21 is inserted to the final position, the protrusions 23a-2a, 23b-2
a comes into pressure contact with the conductive patterns 24a, 24b due to the elastic forces of the arm portions 23a-2, 23b-2, respectively.

Also, the upper surface side of the rotating drum 3 (connector member 2
As shown in FIG. 10, the terminal portions 23a-3 and 23b-3 protrude from the lower surface side during the insertion operation of FIG. These protruding terminal portions 23a-3, 23b-
By bending the connector member 3 while inserted, it is possible to prevent the connector member 21 from falling off and to facilitate soldering with the lead wire 14.

When the connector member 21 is inserted, the protrusion 23a-2a and the conductive pattern 24a are in pressure contact with each other.
The protrusion 23b-2a and the conductive pattern 24b are then soldered as shown in FIG. 25
a and 25b indicate soldered parts. Furthermore, the ends of the lead wires 14 drawn out from the signal transmission section such as the rotary transformer 10 are soldered to the protruding terminal sections 23a-3 and 23b-3. As a result, the magnetic head 6 is connected to the conductive pattern 24.
a, 24b, terminal members 23a, 23b, lead wire 14, and rotary transformer 10, and are electrically connected to a recording/reproducing circuit outside the drum.

Note that with the connector member 21 inserted,
The terminal portions 23a-3 and 23b-3 are each fixedly arranged and function similarly to terminals on a conventional relay board, and no special relay board is provided.

Note that the connector member 21 is sequentially supplied, fitted into the drum through hole 3a, and the protrusions 23a-2a, 2
The soldering between 3b-2a and the conductive patterns 24a, 24b is performed automatically, which improves the reliability of electrical connection and improves productivity.

Further, the through holes 3a of the rotating drum 3 are necessary for relaying signals to the rotating magnetic head 6 or signals from the rotating magnetic head 6 to the rotary transformer 10, but on the other hand, rotational symmetry is required. This results in a local loss of mass in the rotating drum 3, which causes asymmetry, which is not preferable.

In contrast, according to the configuration of the embodiment of the present invention described above, the connector main body 22 is fitted into the through hole 3a, and the through hole 3a is filled with the connector main body 22. As a result, the weight balance of the drum is improved and the performance of the drum is improved.

(Effects of the invention) As described above, in the rotating magnetic head device of the present invention, the distance between the head support mounted on the rotating drum and the connector body is uniquely determined, and the connector body can be fitted into the through hole. The position of the connector main body in the insertion direction at the time of application is uniquely determined without providing a separate position regulating means, and therefore,
The reliability of the electrical connection between the rotating magnetic head and the outside can be improved, the electrical connection can be made with good workability, the connector member can be inserted into the through hole of the rotating drum very easily, and , it becomes extremely easy to sequentially supply connector members, insert them into drum through holes, and automatically perform soldering using an automatic machine, and according to the present invention, by using connector members, Since the through-hole is filled with the connector body, it compensates for the local loss of mass due to the through-hole of the rotating drum.As a result, the balance of the drum's weight etc. is improved and the performance of the drum is improved. It has the following features.

In addition, in the present invention, the planar guide provided on one side of the connector main body is used as the insertion guide surface into the through hole of the rotating drum, so the planar guide restricts the position to the end surface on the rotating drum side, making insertion difficult. The connector member has the advantage of being guided and does not require position adjustment in the rotating direction of the connector member.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an example of a conventional rotating magnetic head device, FIG. 2 is a perspective view of the upper rotating drum in FIG. 1 seen from above, and FIG. 3 is an embodiment of a rotating magnetic head device according to the present invention. Cross-sectional view of Figure 4 A, B, C
5A, B, and C are plan views, side views, and front views of the connector body, respectively. , B, and C are a plan view, a side view, and a front view of the terminal member, respectively; FIG. 8 is a diagram showing the state in which the connector member is inserted into the hole of the rotating drum; FIG. 9 is a diagram showing the state in which the connector member is inserted. FIG. 10 is an enlarged view showing the electrical connection state between the connector member and the head support.
The figure is a perspective view of the rotating drum seen from above, showing the electrical connection between the terminal portion of the inserted connector member and the lead wire. 2...Fixed drum, 3...Rotating drum, 3a...
...Through hole, 6...Rotating magnetic head, 7...Head support, 9...Magnetic tape, 10...Rotary transformer (signal transmission section), 14...Lead wire, 2
0... Rotating magnetic head device, 21... Connector member, 22... Connector body, 22c... Tapered surface, 22d... Planar guide portion, 23a, 23b...
...Terminal member, 23a-2, 23b-2...Arm part,
23a-2a, 23b-2a... protrusion, 23a
-3, 23b-3... terminal section, 24a, 24b...
...Conductive pattern (conductive member), 25a, 25b...
...Soldering part.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A connector body made of an insulating material, which is a columnar body with a tapered end, and a conductive elongated connecting terminal member with both ends thereof protruding outward. The connecting terminal member is inserted from the tapered end into the through hole of the rotating drum to which the head support for supporting the rotating magnetic head is attached. One end portion is electrically connected to a conductive member on the head support, while the other end portion of the connection terminal member is connected to a signal transmission portion to establish electrical connection between the rotating magnetic head and the signal transmission portion. A rotating magnetic head device configured to make connections. (2) Claim 1 of the utility model registration claim characterized in that a planar guide portion is provided on one side of the connector body, and the planar guide portion serves as a guide surface for insertion into the through hole of the rotating drum. rotating magnetic head device.