JP4374285B2 - Method for manufacturing frame of high-frequency device - Google Patents

Description

  The present invention relates to a method for manufacturing a frame of a high-frequency device suitable for application to a television tuner or the like.

  FIG. 20 is a perspective view showing a frame body of a conventional high-frequency device and a method of manufacturing the frame body. Next, the configuration of the frame body of the conventional high-frequency device will be described with reference to FIG. The box-shaped frame 51 has a front plate 52 having mounting feet 52a, a rear plate 53 having a mounting foot 53a, and a front plate 52 and a rear plate 53 that are arranged to face the front plate 52 with a space therebetween. And a plurality of shield plates 56 partitioning the inside of the frame 51. The upper plate 54 is disposed between the upper plate 54 and the lower plate 55. The lower plate 55 is disposed between the front plate 52 and the rear plate 53.

  The F-type coaxial connector 57 is caulked and attached to the front plate 52, and the front plate 52 with the coaxial connector 57 attached is different from the rear plate 53, the upper plate 54, the lower plate 55, and the shield plate 56. It is formed of a metal plate and is attached to the front side of the rear plate 53, the upper plate 54, and the lower plate 55.

  Next, a conventional method for manufacturing a frame of a high-frequency device will be described with reference to FIG. 20. First, in the first production line, one metal plate is punched and bent, and the upper surface plate 54 and the rear plate are processed. A U-shaped semi-finished product is formed by the face plate 53 and the lower face plate 5, and a shield plate 56 for partitioning is formed.

  Further, in the second production line, another metal plate is punched and bent to form a front plate 52. A coaxial connector 57 is attached to the front plate 52 by caulking, and then a rear plate. 53, a semi-finished product comprising the upper plate 54, the lower plate 55, and the shield plate 56 is conveyed to the second production line.

  Then, after the semi-finished product including the rear plate 53, the upper plate 54, the lower plate 55, and the shield plate 56 and the front plate 52 are combined by caulking, when the connecting bar 58 is separated from the front plate 52, the conventional high frequency device The manufacture of the frame is completed. (For example, see Patent Document 1)

  However, in the conventional method for manufacturing a frame of a high-frequency device, the frame 51 forms the metal plate for forming the front plate 52, the rear plate 53, the upper plate 54, the lower plate 55, and the shield plate 56. In addition to the need for two other metal plates, the material cost is increased and the cost is increased, the first and second production lines are necessary, and the production facilities are increased.

Japanese Patent No. 2605494

  A conventional method for manufacturing a frame of a high-frequency device is such that the frame 51 forms a metal plate for forming the front plate 52, and the rear plate 53, the upper plate 54, the lower plate 55, and the shield plate 56. Two metal plates of one metal plate are required, which not only increases the material cost and increases the cost, but also requires the first and second production lines, resulting in an increase in production equipment.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing a frame of a high-frequency device that is low in material cost and equipment cost and easy to attach a coaxial connector.

As a first solving means for solving the above-mentioned problem, a frame body formed by bending a flat metal plate for mounting a circuit board includes a rectangular front plate having mounting holes, The front plate includes a box-shaped rear plate disposed opposite to the front plate and a plurality of plate portions provided between the front plate and the rear plate, and is inserted into the mounting hole. A coaxial connector attached to the front plate by caulking, and after the rear plate and the plate portion are bent from the metal plate to form a front opening portion, the front plate is in a substantially right angle state with the front opening portion. The coaxial connector is attached to the front plate by caulking, and then the front plate is bent so as to close the front opening portion to form the box-shaped frame.

Further, as a second solving means, the plate portion includes first and second plate portions provided between two opposing sides of the front plate and the rear plate, and the front plate from the metal plate. The coaxial connector is attached to the front plate by caulking before it is bent, and then the front plate is bent to form a box-shaped box having a pair of opposed open portions. The manufacturing method was such that

As a third solution, a single metal plate is formed on a rectangular hole provided in the center portion and one opposite side of the hole to form one open portion. The front and rear plates provided, the first and second plate portions provided on the opposite two sides of the hole, and the front and rear plates and the first located in the hole. The manufacturing method is provided with a connecting portion that connects the second plate portions.

As a fourth solution, the plate portion includes first, second, and third plate portions provided between three opposing sides of the front plate and the rear plate. Before the front plate is bent, the coaxial connector is attached to the front plate by caulking, and then the front plate is bent to form the box-shaped frame body having one open portion. The manufacturing method was as follows.

As a fifth solution, the one metal plate includes the first plate portion having a quadrangular shape and the front and rear plates provided on the two opposite sides of the first plate portion. And the second and third plate portions provided on the opposite two sides of the first plate portion, the first plate portion, the front and rear plates, and the second and third portions. It was set as the manufacturing method which provided the connection part which connects the board part.

In the method for manufacturing a frame body of a high-frequency device according to the present invention, a frame body formed by bending a flat metal plate for mounting a circuit board includes a rectangular front plate having mounting holes, It has a box-like shape with a rectangular rear plate placed opposite to the front plate and spaced apart, and a plurality of plate portions provided between the front plate and the rear plate. A coaxial connector attached to the face plate is provided. After the rear plate and the plate portion are bent from a metal plate to form a front opening portion, the front plate is attached to the front plate by caulking with the front opening portion being substantially perpendicular to the front opening portion. Then, after that, the front plate was bent so as to close the front opening portion, thereby forming a box-shaped frame.
As described above, since the frame body is formed of a single metal plate, the material cost is low and the manufacturing cost can be reduced, and the manufacturing cost can be reduced with a single production line.
In addition, since the coaxial connector is attached to the front plate before the front plate is bent, the coaxial connector can be easily attached as compared with the case where the coaxial connector is narrowed in the frame.

  In addition, after the rear plate and the plate portion are bent from the metal plate to form the front open portion, the coaxial connector is attached to the front plate, and then the front plate is bent so as to close the front open portion, Therefore, the bending process of the front plate is the last step, so the coaxial connector does not get in the way of bending the rear plate and the plate part, and the bending process is easy. can get.

  Further, since the front panel is substantially perpendicular to the front opening and the coaxial connector is attached to the front panel, the front panel is wide open, and the coaxial connector can be easily attached.

  The plate portion has first and second plate portions provided between two opposing sides of the front plate and the rear plate, and the coaxial connector is attached to the front plate before the front plate is bent from the metal plate. Since it is attached by caulking, and then the front plate is bent to form a box-shaped frame having a pair of opposed open portions, a coaxial connector in the box-shaped frame Can be easily installed.

  Further, in order to form one open portion, one metal plate has a rectangular hole provided in the central portion, and front and rear plates provided on two opposite sides of the hole, Because the first and second plate portions provided on the other two sides of the hole and the connecting portion that is located in the hole and connects the front and rear plates and the first and second plate portions are provided. It is easy to remove, and therefore an inexpensive frame can be obtained with a low material cost.

  The plate portion has first, second, and third plate portions provided between three opposing sides of the front plate and the rear plate. Before the front plate is bent from the metal plate, the coaxial connector is Since it is attached to the front plate by caulking, and then the front plate is bent to form a box-shaped frame having one open portion, it is easy to mount the coaxial connector on the box-shaped frame. Is obtained.

  In addition, one metal plate is a rectangular first plate portion, and front and rear plates provided on one of the two opposing sides of the first plate portion are opposed to the first plate portion. Since the second and third plate portions provided on the other two sides, the first plate portion, the front and rear plates, and the connecting portion that connects the second and third plate portions are provided, the material removal is good. Therefore, an inexpensive frame body with a low material cost can be obtained.

  FIG. 1 is a front view according to a first embodiment of the high-frequency device of the present invention, and FIG. 2 is a first embodiment of the high-frequency device of the present invention. FIG. 3 is a cross-sectional view of a main part according to the first embodiment of the high-frequency device of the present invention, FIG. 4 is a perspective view of a frame body according to the first embodiment of the high-frequency device of the present invention, and FIG. FIG. 6 is a perspective view of a coaxial connector according to the high-frequency device of the present invention, and FIG. 6 is a side view of the frame according to the first embodiment of the high-frequency device.

  FIG. 7 is a development view of the frame showing the method for manufacturing the frame according to the first embodiment of the high-frequency device of the present invention, and FIG. 8 is the method for manufacturing the frame according to the first embodiment of the high-frequency device of the present invention. FIG. 9 is an explanatory view showing a second step of the method of manufacturing the frame according to the first embodiment of the high-frequency device of the present invention, and FIG. 10 is a first embodiment of the high-frequency device of the present invention. 11 is a perspective view of a frame manufactured by a method of manufacturing a frame according to an example, FIG. 11 is a cross-sectional view of a main part according to a second embodiment of the high-frequency device of the present invention, and FIG. 12 is a third embodiment of the high-frequency device of the present invention. It is principal part sectional drawing which concerns on an example.

  FIG. 13 is a side view according to a fourth embodiment of the high-frequency device of the present invention, FIG. 14 is a perspective view of a frame body according to the fourth embodiment of the high-frequency device of the present invention, and FIG. FIG. 16 is a side view of a frame according to the fourth embodiment, FIG. 16 is a development view of the frame showing a method of manufacturing the frame according to the fourth embodiment of the high-frequency device of the present invention, and FIG. Explanatory drawing which shows the 1st process of the manufacturing method of the frame which concerns on 4th Example, FIG. 18 is explanatory drawing which shows the 2nd process of the manufacturing method of the frame which concerns on 4th Example of the high frequency apparatus of this invention, FIG. These are the perspective views of the frame manufactured by the manufacturing method of the frame which concerns on 4th Example of the high frequency device of this invention.

  Next, the configuration of the high-frequency device according to the present invention will be described with reference to FIGS. 1 to 10. A box-shaped frame 1 formed by punching and bending a single metal plate has a rectangular shape. A face plate 2, a quadrangular rear face plate 3 disposed opposite to the front face plate 2 at an interval, and a quadrangular first and first attached to three opposing sides of the front face plate 2 and the rear face plate 3, respectively. 2 and 3rd plate part 4,5,6.

  In particular, as shown in FIGS. 4 and 7, the first plate portion 4 forming the side plate is provided with a square hole 4a and a pair of bent holes 4a that are bent at a right angle from the root. The second plate portion 5 having the ground piece 4b and forming the upper surface plate includes a notch portion 5a provided on one end side, a protrusion 5b provided in the notch portion 5a, and a front surface. The second plate portion 5 is connected to the first plate portion 4 by the connecting portion 7 and is perpendicular to the position of the connecting portion 7. Can be folded.

The third plate portion 6 forming the lower surface plate includes a notch portion 6a provided on one end side, a protrusion 6b provided in the notch portion 6a, and a pair of protrusions protruding to the front side and the rear side. The third plate portion 6 is connected to the first plate portion 4 by the connecting portion 7 and is bent at a right angle at the position of the connecting portion 7 to form the second plate. It is arranged to face the part 5.
The first, second, and third plate portions 4, 5, and 6 are bent in a U shape with respect to the first plate portion 4, and a front opening portion is provided on the front side of the U shape. A1 is formed, and a rear open portion A2 is formed on the U-shaped rear surface side.

The front plate 2 connected to the first plate portion 4 forming the side plate by the connecting portion 7 includes a mounting foot 2a extending downward, a non-circular mounting hole 2b provided near the center portion, and one end side. The front plate 2 is bent at a right angle at the position of the connecting portion 7 and is formed by first, second, and third plate portions 4, 5, and 6. It is attached so as to close the U-shaped front opening A1.
At this time, the protruding piece 5c of the second plate portion 5 is fitted into the groove portion 2c of the front plate 2, and the protruding piece 6c of the third plate portion 6 is fitted into the groove portion 2d, and the protruding pieces 5c, 6c. The front plate 2 is attached by crimping.

Further, the rear plate 3 connected to the first plate portion 4 forming the side plate by the connecting portion 7 has a mounting foot 3a extending downward and a pair of grooves 3b, 3c provided on one end side. The rear surface plate 3 is bent at a right angle at the position of the connecting portion 7 and is attached so as to close the U-shaped rear surface opening portion A2 formed by the first, second and third plate portions 4, 5 and 6. .
At this time, the protruding piece 5d of the second plate portion 5 is fitted into the groove portion 3b of the rear plate 3, and the protruding piece 6d of the third plate portion 6 is fitted into the groove portion 3c. The rear plate 3 is attached by being caulked.

With such a configuration, the frame body 1 is formed in a box shape having an opening portion 1a on one side surface side, and the ground piece 4b is directed to the opening portion in the box-shaped frame body 1. It will be in the extended state.
Note that a shield plate may be formed on the frame 1 in addition to the ground piece 4b.

  As shown in FIG. 6 in particular, the F-type coaxial connector 11 includes a screw portion 11a made of a metal material, a flange portion 11b provided integrally with the screw portion 11a, and an integral portion of the flange portion 11b. An arc-shaped caulking portion 11c provided at one end thereof, an insulator 11d provided in a hollow portion of the screw portion 11a and the flange portion 11b forming the outer conductor, and a center provided in the central portion of the insulator 11d It is comprised with the conductor 11e.

The coaxial connector 11 has a crimped portion 11c inserted from the outside of the frame 1 into the mounting hole 2b of the front plate 2, and the flange portion 11b is in contact with the front plate 2 and the crimped portion 11c is crimped. A screw portion 11 a and a flange portion 11 b that are attached to the face plate 2 and form an external conductor are grounded to the frame body 1.
At this time, the crimping portion 11c is positioned in the non-circular mounting hole 2b, and the mounting direction of the coaxial connector 11 is constant.

On the circuit board 12 made of a printed circuit board or the like, a wiring pattern (not shown) is formed and various electronic components 13 are mounted to form a desired electric circuit. Inserted into the frame 1 from the open portion 1a side of the frame body 1 so as to be positioned in the portions 5a and 6a, and the protrusions 5b and 6b penetrate the circuit board 12, and the protrusions 5b and 6b It is attached to the frame 1.
At this time, the ground piece 4b penetrates the circuit board 12 and is connected to the grounding wiring pattern, and the linear portion of the arc-shaped caulking portion 11c of the coaxial connector 11 abuts on the surface of the circuit board 12 for positioning. In this state, the central conductor 11e is connected to the wiring pattern.

  Although not shown here, a cover that covers the open portion 1a of the frame body 1 is provided to electrically shield the inside of the frame body 1, and the high-frequency device of the present invention having such a configuration is provided. As shown in FIGS. 1 and 2, the mounting legs 2a and 3a are inserted and fixed to the mother board 14, and the high-frequency device (frame body 1) is in a vertical mounting state.

  Next, a method for manufacturing a frame according to the first embodiment of the high-frequency device of the present invention having such a configuration will be described with reference to FIGS. 7 to 10. First, as shown in FIG. A metal plate is punched, and the first plate portion 4, the second plate portion 5 connected to the first plate portion 4 by the connecting portion 7, the third plate portion 6, the front plate 2, and the rear plate The face plate 3 is formed.

  Next, as shown in FIG. 8, the second and third plate portions 5 and 6 are bent at a right angle at the position of the connecting portion 7 on the basis of the first plate portion 4, and the first, second and second plates are bent. Third plate portions 4, 5, and 6 are formed in a U-shape.

Next, as shown in FIG. 9, after the rear plate 3 is bent at the position of the connecting portion 7 and the rear plate 3 is attached so as to close the U-shaped rear open portion A2, the front open portion A1 and the front The coaxial connector 11 is crimped to the front plate 2 in a state where the face plate 2 is in a substantially right angle state (the first plate portion 4 and the front plate 2 are linear) and the U-shaped front opening portion A2 is opened. It is attached.
That is, the coaxial connector 11 is attached to the front plate 2 before the front plate 2 is bent.

  Thereafter, as shown in FIG. 10, when the front plate 2 is bent at the position of the connecting portion 7 and the front plate 2 is attached so as to close the U-shaped front opening portion A1, the box-shaped frame 1 is obtained. This completes the manufacture of the frame according to the first embodiment of the high-frequency device of the present invention.

And manufacture of the frame of the high frequency apparatus of this invention is carried out by conveying the frame 1 sequentially in one production line.
In this embodiment, after the first, second, and third plate portions 4, 5, and 6 are formed in a U shape, the rear plate 3 is bent. However, the rear plate 3 is bent. Thereafter, the second and third plate portions 5 and 6 may be bent.

  FIG. 11 shows a second embodiment of the high-frequency device according to the present invention. In the second embodiment, the position of the attachment foot is changed so that the open portion 1a side of the frame body 1 faces the mother substrate 14. Thus, the high-frequency device (frame body 1) is in a face-down mounting state.

  At this time, the first plate portion 4 becomes an upper surface plate, and the second and third plate portions 5 and 6 become side plates, and other configurations are the same as in the first embodiment. The same parts are denoted by the same reference numerals, and the description thereof is omitted here. The manufacturing method of the frame according to the second embodiment of the high-frequency device is the same as that of the first embodiment. Omitted.

  FIG. 12 shows a third embodiment of the high-frequency device according to the present invention. In the third embodiment, the first plate portion 4 of the frame 1 is opposed to the mother board 14 by changing the position of the mounting foot. In this way, the high-frequency device (frame 1) is in a face-down mounting state.

  At this time, the first plate portion 4 is a bottom plate, and the second and third plate portions 5 and 6 are side plates, and the other configurations are the same as in the first embodiment. The same parts are denoted by the same reference numerals, and the description thereof is omitted here. Since the manufacturing method of the frame according to the third embodiment of the high-frequency device is the same as that of the first embodiment, the description is given here. Omitted. .

FIGS. 13 to 19 show a fourth embodiment of the high-frequency device according to the present invention. This fourth embodiment is opposite to the first plate portion 4 in the first to third embodiments. One open portion 1a, 1b is provided, and the front and rear plates 2, 3 and the second and third plate portions 5, 6 are connected to the connecting portion 8 located in the open portion 1b, and the frame 1 is The structure is a letter-shaped box.
Since the other configuration is the same as that of the first embodiment, the same parts are denoted by the same reference numerals, and the description thereof is omitted here.

  Next, a method for manufacturing a frame according to a fourth embodiment of the high-frequency device of the present invention will be described with reference to FIGS. 16 to 19. First, as shown in FIG. 16, one metal plate is punched. In order to form one open portion 1b, a rectangular hole 9 provided in the central portion, and rectangular front and rear plates 2 and 3 disposed on two opposite sides of the hole 9 are provided. And square second and third plate portions 5 and 6 arranged on the other two opposite sides of the hole 9, and the front and rear plates 2 and 3 and the second and second plates located in the hole 9. The connecting portion 8 that connects the three plate portions 5 and 6 is formed.

  Next, as shown in FIG. 17, the second and third plate portions 5 and 6 are bent at a right angle at the position of the connecting portion 8 with respect to the hole 9, and the second and third plate portions 5 and 5 are bent. 6 are formed to face each other, and a front opening portion A1 and a rear opening portion A2 are formed.

Next, as shown in FIG. 18, after the rear surface plate 3 is bent at the position of the connecting portion 8 and the rear surface plate 3 is attached so as to close the rear surface opening portion A2, the front surface opening portion A1 and the front surface plate 2 are substantially formed. The coaxial connector 11 is caulked and attached to the front plate 2 with the front open portion A2 in a right-angle state opened.
That is, the coaxial connector 11 is attached to the front plate 2 before the front plate 2 is bent.

  Thereafter, as shown in FIG. 19, when the front plate 2 is bent at the position of the connecting portion 8 and attached so that the front plate 2 closes the front opening portion A <b> 1, the box-shaped frame 1 having a square shape. Is completed, and the manufacture of the frame according to the fourth embodiment of the high-frequency device of the present invention is completed.

1 is a front view according to a first embodiment of a high-frequency device of the present invention. The side view which concerns on 1st Example of the high frequency device of this invention. The principal part sectional drawing which concerns on 1st Example of the high frequency device of this invention. The perspective view of the frame which concerns on 1st Example of the high frequency device of this invention. The side view of the frame which concerns on 1st Example of the high frequency device of this invention. The perspective view of the coaxial connector which concerns on the high frequency apparatus of this invention. The expanded view of the frame which shows the manufacturing method of the frame which concerns on 1st Example of the high frequency device of this invention. Explanatory drawing which shows the 1st process of the manufacturing method of the frame which concerns on 1st Example of the high frequency device of this invention. Explanatory drawing which shows the 2nd process of the manufacturing method of the frame which concerns on 1st Example of the high frequency device of this invention. The perspective view of the frame manufactured by the manufacturing method of the frame concerning the 1st example of the high frequency equipment of the present invention. Sectional drawing of the principal part which concerns on 2nd Example of the high frequency device of this invention. Sectional drawing of the principal part which concerns on 3rd Example of the high frequency device of this invention. The side view which concerns on 4th Example of the high frequency device of this invention. The perspective view of the frame which concerns on 4th Example of the high frequency device of this invention. The side view of the frame which concerns on 4th Example of the high frequency device of this invention. The expanded view of the frame which shows the manufacturing method of the frame which concerns on 4th Example of the high frequency device of this invention. Explanatory drawing which shows the 1st process of the manufacturing method of the frame which concerns on 4th Example of the high frequency device of this invention. Explanatory drawing which shows the 2nd process of the manufacturing method of the frame which concerns on 4th Example of the high frequency device of this invention. The perspective view of the frame manufactured by the manufacturing method of the frame which concerns on 4th Example of the high frequency device of this invention. The perspective view which shows the frame of the conventional high frequency apparatus, and the manufacturing method of the frame.

Explanation of symbols

1: Frame 1a, 1b: Open portion 2: Front plate 2a: Mounting foot 2b: Mounting hole 2c: Groove portion 2d: Groove portion 3: Rear plate 3a: Mounting foot 3b: Groove portion 3c: Groove portion 4: First plate portion 4a : Hole 4b: Ground piece 5: Second plate portion 5a: Notch portion 5b: Projection portion 5c: Projection piece 5d: Projection piece 6: Third plate portion 6a: Notch portion 6b: Projection portion 6c: Projection piece 6d: Protruding piece 7: Connecting part 8: Connecting part 9: Hole 11: Coaxial connector 11a: Screw part 11b: Gutter part 11c: Caulking part 11d: Insulator 11e: Central conductor 12: Circuit board 13: Electronic component 14: Mother Substrate A1: Front open part A2: Rear open part

Claims (5)

A frame body formed by bending a flat plate-shaped metal plate for mounting a circuit board is disposed so as to be opposed to a square-shaped front plate having mounting holes and spaced apart from the front plate. A rectangular rear plate, a plurality of plate portions provided between the front plate and the rear plate, and having a box shape, including a coaxial connector inserted into the mounting hole and attached to the front plate by caulking, After the rear plate and the plate portion are bent from the metal plate to form a front opening portion, the coaxial connector is attached to the front plate by caulking with the front plate being substantially perpendicular to the front opening portion. A method of manufacturing a frame of a high-frequency device, wherein the front plate is bent so as to close the front opening to form the box-shaped frame. The plate portion includes first and second plate portions provided between two opposing sides of the front plate and the rear plate, and the coaxial connector is bent before the front plate is bent from the metal plate. Is attached to the front plate by caulking, and then the front plate is bent to form the box-shaped frame body having a pair of opposed open portions. The manufacturing method of the frame of the high frequency device of Claim 1 . One metal plate includes a rectangular hole provided in the center portion to form one open portion, and the front and rear plates provided on two opposite sides of the hole. , The first and second plate portions provided on the other two opposite sides of the hole, and a connection located in the hole and connecting the front and rear plates and the first and second plate portions. The method for manufacturing a frame for a high-frequency device according to claim 2 , wherein a portion is provided. The plate portion has first, second, and third plate portions provided between three opposing sides of the front plate and the rear plate, and before the front plate is bent from the metal plate, the coaxial connector is attached by crimping to the front plate, after which said front plate is bent, according to claim 1, symptoms that so as to form the frame body of the box-shaped with one open portion The manufacturing method of the frame of the high frequency device as described in any one of. One metal plate includes a rectangular first plate portion, front and rear plates provided on one opposite two sides of the first plate portion, and the first plate portion. The second and third plate portions provided on the other two opposite sides, the first plate portion, the front and rear plates, and a connecting portion that connects the second and third plate portions are provided. The manufacturing method of the frame of the high frequency apparatus of Claim 4 characterized by the above-mentioned.

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