JPH0741985U - Terminal board fixing structure - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object to provide a ground terminal plate that can be accurately positioned without increasing the number of parts. A terminal plate having a soldering terminal portion which is inserted into a terminal hole of a printed circuit board and is soldered to a wiring pattern on the back surface of the printed circuit board has a projecting piece formed on the circumference of a screw insertion hole, The projecting piece is inserted into the screw insertion hole of the board, the soldering terminal portion is inserted into the terminal hole, and the terminal plate is screwed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a terminal board fixing structure for securely mounting a terminal board on a printed circuit board used in electronic equipment or the like at a desired position.

[0002]

[Prior art]

 Conventionally, in electronic devices, a terminal board is fixed to a printed circuit board with a screw.One example is a ground terminal board in which a ground pattern of the printed circuit board and a metal outer casing are electrically connected. The structure of using and connecting to ground is often used. FIG. 4 is a cross-sectional view of a fixed structure of a ground terminal plate showing a conventional example, and FIG. 5 is a perspective view of the ground terminal plate. As shown in FIG. 4, the ground terminal plate 3 in which the soldering terminal portion 2 is soldered to the ground pattern 12 provided on the back surface of the printed circuit board 1 has the screw insertion hole 7 of the ground terminal plate 3 and the printed circuit board 1 It is fastened together with the board receiving seat 10 of the metal outer casing 11 with a screw 9 that passes through the insertion hole 8 of

As a method of fixing the ground terminal plate 3 described above, soldering is performed to the hole for inserting the soldering terminal portion 2 and the ground terminal hole 4 which also serves as a positioning hole on the printed circuit board 1 of the ground terminal plate 3. After mounting the terminal portion 2, align the screw insertion hole 7 of the ground terminal plate 3 with the position of the screw insertion hole 8 of the printed board 1, and in that state, solder the ground pattern 12 and the soldered terminal portion 2 in advance. Keep it. After that, the printed board 1 and the ground terminal board 3 are screwed to the board receiving seat 10.

Originally, if the printed circuit board 1 is screwed to the board receiving seat 10 so that the ground pattern 12 is in contact with the board receiving seat 10, the ground pattern 12 and the board receiving seat 10 are connected to each other, so that the ground pattern 12 is connected to the chassis. Although it is possible to ground directly to 11, it may not be possible to reliably ground due to peeling of the ground pattern. Then, the soldering terminal portion 2 is soldered to the earth pattern 12, and the earth terminal is used to surely ground the earth pattern 12 to the metal outer casing 11 via the soldering terminal portion 2 and the screw 9. A plate 3 is used.

[0005]

[Problems to be solved by the device]

 However, since the position for mounting the ground terminal plate 3 is only one place, that is, the ground terminal hole 4, when the ground terminal plate 3 is soldered to the printed circuit board 1, the screw insertion hole 7 and the screw insertion hole are already formed. 8 may be misaligned, and it may be difficult to insert the screw 9.

The present invention solves such a problem, and an object of the present invention is to provide a ground terminal plate that can be positioned with high accuracy without increasing the number of parts.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a first invention has a soldering terminal portion which is inserted into a terminal hole provided in a printed board and is soldered to a wiring pattern on the back surface side of the printed board. In the terminal plate fixing structure that is screwed to, a projecting piece that protrudes toward the printed circuit board is formed on the circumference of the screw insertion hole of the terminal plate, and the projecting piece is formed in the screw insertion hole provided on the printed circuit board. It is characterized in that the protruding piece is inserted, a soldering terminal portion is inserted into the terminal hole, and the terminal plate is screwed.

A second aspect of the invention is characterized in that, in the terminal plate fixing structure according to the first aspect of the invention, the protruding piece is tapered so as to become thinner toward the inside.

[0009]

[Action]

 According to the present invention, the soldered terminal portion of the terminal board is inserted into the hole provided on the printed circuit board, and the protruding piece provided on the circumference of the screw insertion hole of the terminal board is inserted into the screw insertion hole of the printed circuit board. Since the terminal board is positioned at two places on the printed circuit board by inserting it into the screw board, the screw hole of the terminal board is aligned with the screw hole of the printed circuit board, which facilitates the screw insertion. Also, the terminal plate will not be displaced in the rotation direction due to the tightening of screws.

Further, since the protruding piece is tapered so as to become thinner toward the inside, the protruding piece firmly stops in the screw insertion hole of the printed circuit board regardless of the diameter of the protruding piece. By the way, since it can be fixed, the protruding piece can be formed without being affected by the diameter of the screw insertion hole of the printed circuit board.

[0011]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a fixing structure for an earth terminal plate showing an embodiment of the present invention, and FIGS. 2 (a) and 2 (b) are a top perspective view and a rear perspective view of the ground terminal plate. It is a figure. A printed circuit board 1 has a screw insertion hole 8 and a ground terminal hole 4, and a ground pattern 12 is provided on the back surface thereof. The screw insertion hole 8 is provided to screw the board 9 into the board receiving seat 10 of the metal outer casing 11 for accommodating the printed board 1, and the ground terminal hole 4 is provided in the ground terminal plate 3. The hole for inserting the soldered terminal portion 2 and the hole for positioning when the ground terminal plate 3 is inserted into the printed board 1 are also used.

The ground terminal plate 3 has a screw insertion hole 7 into which the screw 9 is inserted, a soldering terminal portion 2 and a protruding piece 5, and the soldering terminal portion 2 is on the printed circuit board 1. Is inserted into the ground terminal hole 4 of the printed circuit board 1 and is attached to the ground pattern 12 on the back surface of the printed circuit board 1. The protruding piece 5 is formed on the entire circumference of the screw insertion hole 7 so as to be in close contact with the screw insertion hole 8 on the side of the screw insertion hole 8 on the printed circuit board. Reference numeral 6 is its solder, and 13 is a screw hole provided above the inside of the board receiving seat 10.

Next, a method of fixing the ground terminal plate will be described. First, the soldered terminal portion 2 of the ground terminal plate 3 is inserted into the ground terminal hole 4 on the printed circuit board 1, and the projecting piece 5 formed on the ground terminal plate 3 is inserted into the screw insertion hole 8 on the printed circuit board 1. By inserting and fitting, the ground terminal plate 3 is temporarily fixed to the printed board 1 at two places. Next, in this state, the soldering terminal portion 2 is soldered to the ground pattern 12 formed on the back surface of the printed board 1. After that, the printed board 1 and the ground terminal board 3 are fastened together with the screw holes 13 in the screw holes 13 of the board receiving seat 10. As a result, the ground is obtained from the ground pattern 12 of the printed board 1 to the metal outer casing 11 via the soldered terminal portion 2 of the ground terminal plate 3, the screw 9, and the board receiving seat 10.

According to the present embodiment, the soldered terminal portion 2 of the ground terminal plate 3 is inserted into the ground terminal hole 4 on the printed circuit board 1, and the protruding piece 5 formed on the ground terminal plate 3 is printed. Since the ground terminal plate 3 is positioned at two places on the printed circuit board 1 by being fitted into the screw insertion holes 8 on the base plate 1, the screw insertion hole of the printed circuit board and the screw insertion hole of the ground terminal plate are There is no misalignment, and there is no misalignment in the direction of rotation due to screw tightening, so the screw is securely tightened and fixed.

Next, another embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a cross-sectional view of a structure for fixing a ground terminal plate according to another embodiment of the present invention. In this embodiment, a projecting piece 20 provided on the entire circumference of the screw insertion hole 7 of the ground terminal plate 3 is provided. In addition, a taper is formed that becomes thinner toward the inside. Other configurations are the same as those in FIG. 1, and the same parts as those in FIG. 1 are denoted by the same reference numerals.

Next, a method of fixing the ground terminal plate will be described. First, the soldered terminal portion 2 of the ground terminal plate 3 is inserted into the ground terminal hole 4 of the printed circuit board 1, and the protruding piece 20 is inserted into the screw insertion hole 8 on the printed circuit board 1 so that the ground terminal is formed at two locations. The plate 3 is fixed to the print base plate 1. At this time, since the protruding piece 20 is tapered toward the inside as it goes forward, the protruding piece 20 is fixed at a position where it firmly stops in the screw insertion hole 8. The subsequent fixing method is the same as in the case of FIG.

According to the present embodiment, since the protruding piece provided on the entire circumference of the screw insertion hole of the ground terminal plate is formed with a taper which becomes thinner toward the front, the screw on the printed circuit board is screwed. When inserting into the insertion hole, regardless of the diameter of the protruding piece, the protruding piece can be fixed where it firmly stops in the screw insertion hole, so it is affected by the diameter of the screw insertion hole. It is possible to form the protruding piece without using the protruding piece.

In the present embodiment, an example is shown in which the projecting pieces are formed on the entire circumference of the screw insertion hole of the ground terminal plate, but at least two projecting pieces may be opposed to a part of the circumference. It may be formed in.

[0019]

[Effect of device]

 According to the present invention, the terminal board to be screwed to the printed circuit board is provided with the soldered terminal portion in the hole of the printed circuit board and the projecting piece provided on the circumference of the screw insertion hole of the terminal board. Since the terminal board is positioned at two places on the printed circuit board by inserting it into the screw insertion hole of, there is no misalignment between the terminal board screw insertion hole and the printed circuit board screw insertion hole. It has the effect that it can be securely fixed with screws without any deviation in the direction.

Further, since the taper formed on the circumference of the screw insertion hole of the terminal plate is tapered toward the inner side, the projection piece is inserted into the screw insertion hole of the printed circuit board. At this time, regardless of the diameter of the projecting piece, the projecting piece can be fixed where it firmly stops in the screw insertion hole, so that the projecting piece can be fixed without being affected by the diameter size of the screw insertion hole. It has the effect that it can be formed.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a ground terminal plate fixing structure according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a ground terminal plate of the present embodiment.

FIG. 3 is a cross-sectional view of a ground terminal plate fixing structure according to another embodiment of the present invention.

FIG. 4 is a cross-sectional view of a structure for fixing a ground terminal plate showing a conventional example.

FIG. 5 is a perspective view showing a conventional ground terminal plate.

[Explanation of symbols]

 1 Printed Circuit Board 2 Ground Terminal Hole 3 Ground Terminal Plate 5 Projecting Piece 20 Projecting Piece

Claims (2)

[Scope of utility model registration request] 1. A terminal board, which has a soldering terminal portion which is inserted into a terminal hole provided in a printed board and is soldered to a wiring pattern on the back surface side of the printed board, and which is screwed to the printed board. In the fixing structure, a protruding piece protruding toward the printed board is formed on the circumference of the screw insertion hole of the terminal plate, and the protruding piece is inserted into the screw insertion hole provided in the printed board, and A terminal plate fixing structure, characterized in that a soldering terminal portion is inserted into the terminal hole and the terminal plate is screwed. 2. The terminal plate fixing structure according to claim 1, wherein the projecting piece is tapered so as to become thinner toward the inside.