JPH08293687A - Method of manufacturing shielded electric product with connector for external connection and the product - Google Patents

Abstract

PURPOSE: To keep the suitable position and posture of a board by automatically adjusting floating or inclination during mounting by integrally forming a horizontal pressure plate at a notch, clamping and holding a connector for external connection between the pressure plate and the board and thereafter fixing the whole. CONSTITUTION: Electric parts 14 and a connector 15 for external connection are mounted at predetermined positions on a board 12. A predetermined notch 16 is so formed in a covering case 13 that the connector 15 for external connection is exposed at the corresponding position, when the board 12 is mounted. A pressure plate 17 is formed along the notch 16 almost horizontally. The board 12 and the covering case 13 are so assembled that the covering case 13 covers the board 12 on which the predetermined parts 14 and the connector 15 for external connection are mounted. This makes the pressure plate 17 provided at the notch 16 presses the connector 15 for external connection from upper side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a shielded electric product in which a board for mounting various electronic components and a connector for external connection is shielded by an electromagnetic field and a shielded electric product obtained by carrying out the method. is there.

[0002]

2. Description of the Related Art Generally, an electric product that requires an electromagnetic field shield is, for example, a high frequency signal processing unit (hereinafter collectively referred to as a tuner unit) such as a terrestrial / satellite tuner, which is provided on a predetermined printed circuit board. Various electronic parts and electric circuits are mounted and assembled in a metal case to be electromagnetically sealed.

In this type of tuner unit, for example, a so-called external connection (interface) for connecting with an internal electric circuit portion of a device such as a television or a video tape recorder, a connecting terminal is a metal for shielding. It is exposed from the case.

The connection terminal is, for example, a pin connector or a feedthrough capacitor (hereinafter collectively referred to as an external connection connector), and it is necessary to connect to an external device or an electric circuit, so that the positional accuracy is improved to some extent. Is required.

A conventional tuner unit has, for example, the configuration shown in FIG. The tuner unit 1 is composed of a substrate 2 and a metal case 3 attached so as to cover the substrate 2. The substrate 2 is a so-called printed circuit board, and a plurality of electronic components 4 and an external connection connector 5 are provided. It is implemented.

The metal case 3 has a thin box shape as a whole, and has a notch of a predetermined size at a position corresponding to the external connection connector 5 so that the pin terminals 5a of the external connection connector 5 are exposed. The part 6 is formed. A tube 7 for inserting and connecting a cord is provided at a predetermined side surface position.

When the external connection connector 5 is attached to the board 2 with high positional accuracy, the external connection connector 5 is cut into the cutout portion 6 when it is assembled in the metal case 3, as shown in FIG. Correctly, and the pin terminal 5a projects to an appropriate position so that connection with an external device can be easily performed. The legs 5b are soldered 8 on the substrate 2 side.

However, as shown in FIG. 7, when the external connection connector 5 is attached to the substrate 2 in a state of being slightly raised by the dimension a, the pin terminal 5a protrudes from the notch 6. However, the height is still displaced by the dimension a, which makes it difficult to connect to an external device.

Further, as shown in FIG. 8, when the external connection connector 5 is attached to the board 2 in a state in which the external connection connector 5 is slightly inclined forward or backward, the pin terminal 5a projects from the notch 6. However, it will face downward or upward, which makes it difficult to connect to external equipment. In any case, these are defective products.

[0010]

Generally, as means for attaching the external connection connector 5 to the board 2 with high positional accuracy, for example, before the external connection connector 5 is soldered to the board 2, an adhesive or the like is used. It is fixed upright at a proper position by using it, or it is temporarily fixed to an upright fixed state by using a predetermined fixing jig when soldering, so-called temporary upright fixing at the time of board mounting, and proper metal case side A means for fixing the external connection connector 5 to the position in advance by caulking means or the like, that is, a means for fixing the external connection connector to the so-called metal case itself can be considered.

However, in the above means,
Not only the extra manufacturing process is added to make the work complicated, but also extra equipment is required, mass productivity is deteriorated, and the cost is increased. Further, in the above means, the work of assembling the external connection connector with the metal case is additionally added, which is not only inferior in mass productivity, but the metal case and the external connection connector are not general-purpose products but special or custom-made products. Therefore, there is a problem that the cost is increased.

Therefore, in the conventional example, there is a problem that the external connection connector must be properly attached to the board and the workability for manufacturing at low cost must be solved.

[0013]

As a concrete means for solving the above-mentioned problems of the conventional example, the present invention has a board on which various electronic parts and a connector for external connection are mounted, an electromagnetic field shielding function, and A cover case having a notch at a position corresponding to the connector for connection, and a horizontal pressing plate integrally formed in the notch, and the connector for external connection between the pressing plate and the substrate. Method for manufacturing a shielded electric product including an external connection connector, which is characterized in that a fixing process is performed collectively after that, and a board on which various electronic components and an external connection connector are mounted, and an electromagnetic field shield. An electrical component having a function and a cover case having a cutout at a position corresponding to the external connection connector, wherein a horizontal pressing plate is integrally formed in the cutout. There is provided a shielding electric products with external connector, characterized in that the.

[0014]

With the horizontal pressing plate provided in the notch of the cover case, the external connection connector mounted on the substrate can be brought into close contact with the substrate side by the pressing plate when the substrate and the cover case are assembled. By pressing down, the rise and tilt at the time of mounting are automatically corrected and the proper position and posture are maintained, and it is not necessary to fix the mounted components to the board upright beforehand. The work process can be simplified and the productivity is improved.

[0015]

Next, the present invention will be described in more detail with reference to the illustrated embodiments. 1 and 2, an electric product 11 such as a tuner unit includes a substrate 12 and a cover case 13 mounted so as to cover the substrate.

The board 12 is, for example, a printed board on which a predetermined circuit is printed and printed. On the board 12, a plurality of electronic components 14 are mounted at predetermined positions and an external connection connector 15 is mounted. ing. The external connection connector 15 has a plurality of pin terminals 15a and mounting leg pins 15b, and is mounted along a predetermined edge of the substrate 12 with the pin terminals 15a facing outward. .

The cover case 13 is, for example, a metal case for shielding an electromagnetic field. The case has a thin shape as a whole and has a box shape with an open lower part. When the substrate 12 is assembled, External connection connector 1
A predetermined cutout portion 16 is formed corresponding to the position so that 5 is exposed, and a pressing plate 17 positioned substantially horizontally along the cutout portion 16 is formed.

The pressing plate 17 can be easily formed by cutting off both short sides of the notch 16 and bending the whole inward at a substantially right angle when the notch 16 is formed. As another method, after forming the notch 16, another member having a predetermined size can be attached by welding or adhesive means. In short, the notch 16
It suffices that a horizontal holding plate 17 is provided along the line. A tube 18 for inserting a cord is provided on an appropriate side surface of the cover case 13.

Assembling of the substrate 12 and the cover case 13 formed in this manner covers the substrate 12 on which the predetermined electronic components 14 and the external connection connector 15 are mounted, as shown in FIGS. When assembled on the substrate 12 so as to cover the case 13, the pressing plate 17 provided in the cutout 16 presses the external connection connector 15 from above.

Even if the external connection connector 15 with respect to the board 12 is mounted in a raised or tilted state, the external connection connector 15 is sandwiched between the board 12 and the pressing plate 17 when the cover case 13 is assembled. By attaching it, the rising or tilting is automatically corrected and the seat is correctly seated in the upright fixed position.

After the board 12 and the cover case 13 are assembled, the external connection connector 15 is uprightly fixed in the correct position by collectively fixing, that is, soldering, and terminal pins protruding to the outside. 15a is correctly positioned, and connection with an external device can be easily performed.

In this way, the substrate 12 and the cover case 13 are
Since the position and orientation of the external connection connector 15 mounted on the board 12 can be automatically corrected when assembling the
The external connection connector 15 need not be fixed upright to the substrate 12 in advance, and no special fixing jig or the like is required.

In particular, the external connection connector 15 is connected to the substrate 12.
Since the electric product is completed in a state of being sandwiched between the holding plate 17 and the horizontal pressing plate 17, when connecting and disconnecting with the external connection terminal,
Even if the twisting action is imparted, the influence on the external connection connector 15 is small, the leg pins 15b are not damaged, and it is possible to sufficiently withstand long-term use.

In the above-described embodiment, the case where the cover case 13 is a metal case has been described. However, the cover case 13 is not limited to this, and may be, for example, a plastic case in which a metal film is formed to shield an electromagnetic field. , Which are included in substantially the same technical idea.

[0025]

As described above, the method for manufacturing a shielded electric product provided with the connector for external connection according to the present invention,
It is composed of a board on which various electronic parts and an external connection connector are mounted, and a cover case having an electromagnetic field shield function and having a cutout portion at a position corresponding to the external connection connector, and the cutout portion is horizontally oriented. Since the pressing plate of 1 is integrally formed, the external connection connector is sandwiched between the pressing plate and the substrate, and the fixing process is performed collectively thereafter, the external connection connector can be properly connected. Not only can it be fixed upright in various positions and states, but it is not necessary to fix the mounted components to the board before the board is mounted in the cover case, and the manufacturing process can be simplified accordingly. It has an excellent effect that it leads to cost reduction.

Further, a shielded electric product provided with an external connection connector according to the present invention has a board on which various electronic components and an external connection connector are mounted, an electromagnetic field shield function, and the external connection connector. It is an electric component comprising a cover case having a cutout at a corresponding position, and a horizontal pressing plate is integrally formed in the cutout so that when the cover case and the board are assembled, the board is horizontal. The holding plate allows the connector for external connection to be clamped from above and below to automatically correct the rising and tilting, and it is possible to fix the mounting parts such as the connector for external connection by erecting or fixing them. Not only does it not require tools and equipment, it does not require special connector parts, etc.
It has an excellent effect that it can be provided at low cost.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing an exploded electrical product with an external connection connector according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a completed state of the embodiment.

FIG. 3 is an enlarged cross-sectional view showing an assembling process along line BB in FIG.

FIG. 4 is an enlarged cross-sectional view taken along line BB of FIG. 2 after completion of assembly.

FIG. 5 is a perspective view of a tuner unit of a conventional example.

6 is an enlarged sectional view taken along the line AA of FIG.

FIG. 7 is an enlarged cross-sectional view showing an example of mounting failure similar to FIG.

FIG. 8 is an enlarged cross-sectional view showing another example of mounting failure similar to FIG.

[Explanation of symbols]

 11 Electrical Parts 12 Board 13 Cover Case 14 Electronic Parts 15 Connector for External Connection 15a Pin Terminal 15b Leg Pin 16 Notch 17 Presser Plate 18 Tube

Claims (4)

[Claims] 1. A substrate comprising various electronic components and a connector for external connection mounted thereon, and a cover case having an electromagnetic field shielding function and having a notch at a position corresponding to the external connector. An external connection characterized in that a horizontal pressing plate is integrally formed in the cutout portion, the external connection connector is sandwiched between the pressing plate and the substrate, and then a fixing process is collectively performed. Of manufacturing a shielded electric product equipped with a connector for use. 2. An electrical component comprising a substrate on which various electronic components and an external connection connector are mounted, and a cover case having an electromagnetic field shielding function and having a cutout at a position corresponding to the external connection connector. A shielded electric product having a connector for external connection, wherein a horizontal pressing plate is integrally formed in the cutout portion. 3. The shielded electric product according to claim 2, wherein the horizontal pressing plate is formed in series with the cover case when the cutout is formed. 4. The shielded electric product having an external connection connector according to claim 2, wherein the cover case is a metal case or a plastic case provided with an electromagnetic field seal.