JPH0732099B2 - Rotating transformer device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary transformer device that can be used in a magnetic recording / reproducing device.

Configuration of Conventional Example and Problems Thereof FIG. 1 is a perspective view of a conventional rotary transformer device, and FIG. 2 is a sectional view of the same device. In these figures, 1 is a 4-channel core, 1a is a winding groove, 1b is a guiding groove, 2a is a terminal for processing the end line of the winding, 2b is a supporting portion for relaying the terminal 2a, 3 (3a, 3b) Is a pin press-fitted into the terminal 2a, 4 is a fixed body for fixing the device, and 4a is a through hole.

The operation of the conventional rotary transformer device configured as described above will be described below. As for the winding procedure, the start portion of the winding is wound around the pin 3a, passed through the guide groove 1b and wound a required number of turns in the winding groove 1a, and then passed through the guide groove 1b again, and the finish portion of the winding is wound around the pin 3b. Roll the remaining channels in the same procedure. Here, the start portion and the finish portion of the winding must be end-wire treated at the same terminal 2a. This is because if the start part and the finish part of the winding pass through different guide grooves and end wires are processed at different terminals, that is, if the number of turns in the winding groove is not an integer, it is easy to pick up magnetic noise. is there.

Further, the pin 3 is provided inside the outer periphery of the core 1 so that the winding does not float outside the outer periphery of the core 1. (Second
However, in the above configuration, when the number of channels of the rotary transformer device increases, the winding start part and the finish part are processed in the same terminal 2a (that is, the number of turns is an integer), and the winding does not float. Under the condition that the pin 3 must be provided inside the outer periphery of the core 1,
There is no choice but to increase the number of terminals 2a, or to increase the number of pins to be press-fitted into the positions inside the outer periphery of the core 1 of the terminal 2a.
However, the number of terminals 2a is limited due to dimensional restrictions and strength restrictions resulting from the number of through holes 4a of the fixed body 4 fixed to the rotary transformer device, and the number of pins press-fitted into the terminals 2a is large. Then, the pin 3 and the through hole
There is a drawback that it becomes difficult to maintain the predetermined distance of 4a, the pin 3 comes into contact with the through hole 4a, and an output signal cannot be obtained.

Object of the Invention An object of the present invention is to make it possible to easily perform end line processing corresponding to multichannelization of a rotary transformer device, and prevent a pin from contacting a through hole of a fixed body on which the rotary transformer device is mounted. It is to provide a device.

According to the present invention, a stepped portion for a crossover wire guide is provided on the outer periphery of a support portion that interrupts a plurality of terminals, a plurality of pins are press-fitted into the plurality of terminals, and a position inside the core outer periphery is provided. It has a convex part for hooking the winding, which makes it possible to easily process the end line corresponding to the multi-channelization of the rotary transformer device, and the pin and the through hole of the fixed body on which the rotary transformer device is mounted. It is possible to prevent contact.

Description of Embodiments An embodiment of the present invention will be described below with reference to the drawings. FIG. 3 is a perspective view of a rotary transformer device according to an embodiment of the present invention, and FIG. 4 is a sectional view of the same device. 3a
~ 3c are pins press-fitted into the terminal 6a, which will be described later, 3d to 3f
Is a pin press-fitted into a terminal 6b, which will be described later, 4 is a fixed body for fixing the present device, 4a is a through hole, and the above is the same as the configuration of FIG. Reference numeral 5 is a 6-channel core, 5a to 5c are winding grooves, 5d and 5e are guide grooves, and 6a and 6b are terminals for end-wiring treatment of windings, the tips of which are inserted into through holes of the fixed body.
(Refer to FIG. 4) 6c is a support portion that relays the plurality of terminals 6a, and a stepped portion that guides the crossover wire is provided on the outer periphery. 6d and 6e are protrusions that hook the windings at positions inside the outer periphery of the core 5 in the terminals 6a and 6b.

The operation of the rotary transformer device of this embodiment configured as described above will be described below. The winding procedure is core 5
After winding the start part of the winding around the pin 3c located inside the outer periphery of the, passing through the guide groove 5d and winding the required number of turns in the winding groove 5a,
After passing through the same guide groove 5d again and hooked on the convex portion 6d, the stepped portion provided on the outer periphery of the support portion 6c is crossed, and the finish portion of the winding is wound around the pin 3d located inside the outer periphery of the core 5.
Next, the start portion of the winding is wound around the pin 3a located inside the outer periphery of the core 5, passes through the guide groove 5d, and the required number of turns around the winding groove 5b, and then passes through the same guide groove 5d again and the convex portion 6d. Then, the finish portion of the winding is wound around the pin 3b located outside the outer circumference of the core 5.

Next, the start portion of the winding is wound around the pin 3e located inside the outer periphery of the core 5, passes through the guide groove 5e, and the required number of turns around the winding groove 5c, and then passes through the same guide groove 5e again, and the convex portion After hooking on 6e, the finish part of the winding is wound around the pin 3f located outside the outer periphery of the core 5. Wind the remaining channels in the same way.

From the above, the number of turns of the winding is an integer even for multi-channel rotary transformer devices, and the convex portions 6d, 6e
Since the pins 3b and 3f located outside the outer periphery of the core 5 are end-lined, the winding does not float outside the outer periphery of the core 5.

In addition, since the terminal 6a is partially extended and inserted into the small-diameter through hole 4a of the fixed body 4 that is fixed to the rotary transformer device (see FIG. 4), even if the number of pins increases, the pin 3 and the through hole
It becomes possible to maintain a fixed distance from 4a, and pin 3
It is possible to prevent the contact between the and the through hole 4a.

As described above, according to this embodiment, the stepped portion is provided on the outer periphery of the support portion 6c that relays the terminals 6a and 6b, and the terminal 6
By providing convex portions 6d and 6e on the inner side of the outer periphery of the core 5 at a and 6b, even if the number of terminals is restricted due to the size and strength of the multi-channel rotary transformer, an integer number of turns are required. The number can be maintained and the winding can be prevented from floating outside the outer circumference of the core.

In addition, by extending the tips of the terminals 5a and 5b and partially inserting them into the through holes 4a of the fixed body 4 which are opposed to each other, and keeping a predetermined distance between the pins 3 and the through holes 4a, the contact between the pins 3 and the through holes 4a can be achieved. Can be prevented.

EFFECTS OF THE INVENTION As is clear from the above description, according to the present invention, a stepped portion for providing a crossover wire guide is provided on the outer periphery of a support portion that relays a terminal, and a convex portion is provided at a position inside the outer periphery of the core at the terminal. As a result, it is possible to maintain an integer number of turns in the number of terminals that are restricted in terms of dimensions and strength, and to prevent the winding from floating outside the outer circumference of the core, and even when the number of pins increases, By extending the tip of the terminal and partially inserting it into the through hole of the fixed body, it is possible to prevent contact between the pin and the through hole, and it is possible to easily achieve multi-channel rotation transformer device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a conventional rotary transformer device, FIG. 2 is a sectional view of the same, and FIG. 3 is a perspective view of a rotary transformer device according to an embodiment of the present invention. FIG. 4 is a sectional view of the device. 3a to 3f (3) ...... pin, 4 ... fixed body, 4a ... through hole, 5 ... core, 5a to 5c ... roll groove, 5d, 5e ... guide groove, 6
a to 6b …… Terminal, 6c …… Supporting part, 6d, 6e …… Convex part.

Claims (2)

[Claims] 1. A rotary transformer device for relaying a signal between a rotating magnetic head and an amplifier, wherein a stepped portion for guiding a crossover wire is provided on the outer periphery of a support portion for relaying a plurality of terminals, and the plurality of terminals are provided in the plurality of terminals. Multiple pins are press-fitted,
A rotary transformer device, wherein a convex portion for hooking the winding is formed at a position inside the outer circumference of the core. 2. The rotary transformer device according to claim 1, wherein the terminal is extended so that the tip of the terminal fits into a through hole corresponding to the terminal of the fixed body for fixing the rotary transformer device. .