JPH0427191Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a circuit board assembly suitable for a head drum assembly of a rotating magnetic head.

BACKGROUND ART A head drum assembly in which a rotating magnetic head for recording or reproducing signals on a video tape is built into a head drum is used to relay signal lines required to connect the rotating magnetic head to an external recording/reproducing circuit. As shown in FIG. 1, a disk-shaped circuit board 1 having ears on both sides can be fixed to the lower surface of a head drum 3 facing a rotating magnetic head drive motor 2 via an insulating spacer 4. many. However, in the conventional insulating spacer 4 used for this type of application, the two connectors 5 and 6 are separate, as shown in FIG. It had drawbacks such as being complicated.

That is, in the conventional circuit board assembly 7, connector pins 5a, Five connectors 6a and two connectors 5 and 6 are attached. Then, the connector pin 5 is inserted through the connector pin insertion hole 1a.
a, 6a are soldered from the top side of the circuit board 1 as shown in FIG.
An insulating spacer 4 was fixed to the upper surface of the . Therefore, the circuit board 1 requires soldering not only on the bottom surface on which the main circuit pattern is formed, but also on the top surface, which has the drawback of increasing the manufacturing cost of the circuit board 1.

Disclosure of the invention This invention eliminates the above drawbacks,
By using an insulating board with an integrated connector and attaching it to the circuit board, all the necessary soldering to the circuit board can be done on one side of the circuit board, reducing the number of parts and simplifying the manufacturing process. It is an object of the present invention to provide a circuit board assembly that can achieve both of these functions.

To achieve this purpose, this invention provides a circuit board in which a connector pin insertion hole is formed and one side on which a circuit pattern is formed is a soldering surface, and a circuit board opposite to the soldering surface of the circuit board. an insulating plate integrally formed with a connector having a surface that matches the side surface and a pair of pin legs of the connector pin penetrated from the surface opposite to this surface and locked therein; is inserted into the connector pin insertion hole to extend onto the soldering surface of the circuit board, and this extended portion is soldered.

According to this invention, the connector is integrally formed on the periphery of the insulating plate, and the U-shaped connector pin through which the connector is inserted extends to the soldering surface of the circuit board. It can be composed of two parts, an insulating board and a circuit board.When assembling, all you have to do is match the insulating board to the circuit board and then solder the connector pins that pass through the circuit board.Therefore, all the circuit boards are connected to one side. It is only necessary to solder the two surfaces, which has excellent effects such as reducing the number of parts and simplifying the manufacturing process.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the invention will be described with reference to FIG. 4 and subsequent figures. 4 and 5 are an exploded perspective view and a vertical sectional side view of essential parts, respectively, showing an embodiment of the circuit board assembly of this invention.

In FIG. 4, the circuit board assembly 11 includes a disc-shaped circuit board 12 with one of the surfaces on which a circuit pattern is formed as a soldering surface, and an insulator mounted on the upper surface of the circuit board 12. It consists of a connector-integrated insulating spacer 13. The circuit board 12 is
It does not have ears like the conventional one, but has two chamfered parts 1.
2b is formed. Inside these chamfered portions 12b, five and two connector pin insertion holes 12a are formed in parallel rows.

On the other hand, the insulating spacer 13
L on both sides of the disc-shaped insulator 13a having a shape that matches
The connector 14 is integrally formed with a letter-shaped connector 14. As shown in FIG. 5, the connector 14 includes a vertical wall portion 14a having a horizontal protrusion 14c that prevents a socket (not shown) to be connected from coming off, and a connector pin 15 bent in a U-shape. and a pedestal part 14b into which one pin leg part 15a is press-fitted, and the connector pin 15 is press-fitted into the pedestal part 14b.
In this case, the other pin leg 15b is connected to the disc-shaped insulator 13.
a, and a length exceeding the thickness of the circuit board 12 extends to the lower surface of the disc-shaped insulator 13a.

The other pin leg portion 15b is located at a position that matches the connector pin insertion hole 12a of the circuit board 12, so when the insulating spacer 13 is attached to the circuit board 12, the pin leg portion 15b of the connector pin 15 is aligned with the connector pin insertion hole 12a of the circuit board 12. Insert through the insertion hole 12a. Therefore,
Soldering work after mounting the circuit board is done on circuit board 1.
You only need to do this on the bottom side of 2.

In this way, the circuit board assembly 11 includes the insulating spacer 13 with which the connector 14 is integrated in advance.
Since it uses two parts, the insulating spacer 13 and the circuit board 12, it is only necessary to have two parts, and when assembling, after installing the insulating spacer 13, the circuit board 12
It is only necessary to perform the soldering work on the lower surface side, and automation of the soldering work can be easily realized.

As described above, according to the circuit board assembly 11, the connector 14 is attached to the peripheral edge of the insulating spacer 13.
are integrally formed, and the U-shaped connector pin 15 through which the connector 14 is inserted extends to the soldering surface of the circuit board 12. Therefore, the insulating spacer 13 and the circuit board 12, which are integrated into the connector, are two parts. When assembling, all you have to do is align the insulating spacer 13 with the circuit board 12 and then solder the connector pin 15 that passes through the circuit board 12. Therefore, the circuit board 12 only needs to be mounted on one side. All that is required is soldering, and the number of parts can be reduced and the manufacturing process can be simplified.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an example of a head drum assembly, FIGS. 2 and 3 are an exploded perspective view and a longitudinal sectional side view of essential parts, respectively, showing an example of a conventional circuit board assembly, and FIGS. 4 and 5 are FIG. 1 is an exploded perspective view and a vertical sectional side view of essential parts, respectively, showing an embodiment of the circuit board assembly of this invention. 11... Circuit board assembly, 12... Circuit board,
12a... Connector pin insertion hole, 13... Insulating spacer, 15... Connector pin, 15a, 15b
...Pin leg.

Claims (1)

[Scope of utility model registration request] a circuit board in which a connector pin insertion hole is formed and one side on which a circuit pattern is formed is a soldering surface; and a surface that matches the surface of the circuit board opposite to the soldering surface; an insulating plate integrally formed with a connector through which a pair of pin leg portions of a connector pin are inserted and locked from a surface opposite to this surface; A circuit board assembly characterized in that it extends onto a soldering surface of a circuit board, and the extended portion is soldered.