TWI624126B - PCB terminal metal parts - Google Patents

Abstract

The object of the present invention is to prevent foreign matter such as chips from falling on the circuit board due to the locking or detachment of screws when the circuit board is connected to the electronic device and the like, and to provide a substrate terminal metal piece having the above-mentioned functional structure.

The solution is a plate-shaped body formed from a bent plate-shaped body, which is provided with a substrate terminal metal piece fixed to a fixing claw portion for a circuit board. The substrate-terminal metal piece is formed in a plurality of wall surfaces formed by the plate-shaped body. A wall surface is formed with a through hole penetrating from the outer side to the inner side of the wall surface, and a bottomed cylindrical body is mounted on the inner side of the wall surface, the bottomed cylindrical body having a hollow portion inserted into the through hole. And an internal thread portion is formed on the inner wall.

Description

PCB terminal metal parts

The present invention relates to a metal terminal for connecting a terminal such as a lead of an electronic device or the like to a circuit board for a printed circuit board or the like.

When connecting terminals for electronic equipment to circuit boards such as printed circuit boards, substrate terminals are used.

Screw holes are provided in the substrate terminals. The screw hole is known to have a configuration in which an internal thread is formed inside a flange formed on a thin metal plate by flanging. In addition, a screw hole formed after a nut is mounted on a thin plate having a through hole is also known.

These screw holes are all through holes. Therefore, when a connection terminal of an electronic device or the like is locked with a screw or a screw hole, foreign matter such as chips may fall on a circuit board located on a lower side through the screw hole when the screw is fixed or removed. If this happens, it may cause a short circuit on the board.

Today's industrial products, such as automobiles, are equipped with many precision equipment such as electronic equipment that requires computer control. When these electronic devices are connected to a circuit board, a substrate terminal is used.

The above-mentioned foreign matter such as chips fell on the circuit board through the screw hole and caused the circuit Unfavorable conditions such as short circuit of the board are matters related to the quality of the product. Therefore, it is expected to be improved to prevent the above-mentioned disadvantages from occurring.

[Advanced technology offering] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 2004-207162

[Patent Document 2] Japanese Unexamined Patent Publication No. 6-188036

[Patent Document 3] Japanese Patent Laid-Open No. 2013-54882

An object of the present invention is to provide a substrate terminal metal piece capable of preventing foreign matter such as cutting chips from falling on a circuit board by locking or removing a screw when the circuit board is connected to an electronic device or the like.

To solve the above problems, the following inventions have been proposed.

The invention of claim 1 in the scope of the patent application, the substrate terminal metal piece is a substrate metal piece formed of a bent plate-like body and provided with a fixing claw portion for a circuit board. One of the plurality of wall surfaces formed by the body is formed with a through hole penetrating from the outer side to the inner side of the wall surface, and the inner side of the wall surface is provided with a bottomed cylindrical body, the bottomed cylindrical body. The hollow portion is inserted into the through hole, and a female screw portion is formed on the inner wall.

The invention according to claim 2 is the substrate terminal metal member described in claim 1, wherein the bottomed cylindrical body is integrally formed with the wall surface on which the through hole is formed.

The invention according to claim 3 is the substrate terminal metal piece described in claim 1, wherein the bottomed cylindrical body is mounted on the inner side of the wall surface where the through hole is formed. .

The invention in the fourth scope of the patent application is the substrate terminal metal piece described in any one of the first to the third scope of the patent application, wherein the fixing claw portion is formed in the plate-shaped body. Among the plurality of wall surfaces, the wall surface at the lower end side of the wall surface for forming the side wall of the substrate terminal metal member, and the wall surface formed with the through hole is a wall surface for forming a top plate of the substrate terminal metal member connected to the upper end side of the side wall.

The invention of claim 5 is in the substrate terminal metal piece described in claim 4 of the patent application, wherein the top plate is arranged to be inclined obliquely downward, and the cylindrical body is corresponding. The inclination of the top plate is disposed so as to be inclined downward.

The invention of claim 6 in the scope of patent application is the substrate terminal metal piece described in any of claims 1 to 3 in the scope of patent application, characterized in that the fixed claw portion is formed on the plate-shaped body. Among the plurality of wall surfaces, the lower end side of the wall surface for forming the side wall of the substrate terminal metal piece, and the wall surface in which the through hole is formed is the side wall.

According to the present invention, it is possible to provide a substrate terminal metal piece capable of preventing foreign matter such as chips from falling on the circuit board by locking or removing screws when the circuit board is connected to an electronic device or the like.

1a, 1b, 1c, 1d ‧‧‧ substrate terminal metal parts

2‧‧‧ roof

3‧‧‧ side wall

4‧‧‧ fixed claw

5‧‧‧ tube

5a, 5b ‧‧‧ Underside of the cylinder

6‧‧‧through hole

7‧‧‧internal thread

8‧‧‧Connecting terminal

9‧‧‧ male thread

10‧‧‧ Sheet Metal

FIG. 1 is a perspective view showing a first aspect of a substrate terminal metal member according to a first embodiment of the present invention.

Fig. 2 is a front view of the substrate terminal metal piece shown in Fig. 1.

Fig. 3 is an A-A cross-sectional view of the substrate terminal metal piece shown in Fig. 1.

Fig. 4 is a diagram showing an example of use of the substrate terminal metal fitting shown in Fig. 1.

Fig. 5 is a perspective view showing Form 2 of the substrate terminal metal piece according to the first embodiment of the present invention, (a) is a perspective view, and (b) is a partial omission. The internal structure will be explained later.

Fig. 6 is a perspective view showing a first aspect of a substrate terminal metal piece according to a second embodiment of the present invention.

FIG. 7 is a second view showing a second embodiment of a metal material for a substrate terminal of the present invention, (a) is a perspective view, and (b) is a cross-sectional view for explaining the internal structure partially omitted.

[Embodiment of Invention]

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)

1 to 4 are diagrams showing examples of the first embodiment of the present invention.

The substrate terminal metal piece 1a of the first embodiment is formed by bending a plate-like body.

In the example shown, the metal sheet 10 is bent by pressing The zigzag shape is thereby formed into a structure having three wall surfaces of the top plate 2 and the side walls 3 and 3.

In the embodiment shown in the figure, fixing claw portions 4 and 4 for fixing to a circuit board such as a printed circuit board are provided on the lower end sides of the side walls 3 and 3. Next, a top plate 2 is connected to the upper end sides of the side walls 3 and 3.

In the illustrated embodiment, a through hole 6 is formed in the top plate 2 and penetrates from the outer side to the inner side of the top plate 2.

Next, a cylindrical body 5 is provided on the inner side of the top plate 2. The cylindrical body 5 is provided with a hollow portion communicating with the through hole 6, and an internal thread portion 7 is formed on the inner wall. The cylindrical body 5 is a bottomed cylindrical body having a bottom surface 5a.

The structure shown above can be formed, for example, by forming a cylindrical recessed portion with a bottom surface 5a as shown in FIG. 3 at the center of the top plate 2 by crimping, and forming the internal thread 7 by hobbing. It is formed in the inner surface of the said recessed part. The bottomed cylindrical body 5 and the top plate 2 are configured as an integrated structure.

Alternatively, although not shown, a through-hole 6 may be provided through the central portion of the top plate 2, and a cap nut having a hollow portion communicating with the through-hole 6 and an internal thread 7 formed on the inner wall may be attached to The cylindrical body 5 can be formed on the inner side of the top plate 2. The bottomed cylindrical body 5 may be configured as a separate body from the top plate 2.

FIG. 4 is a conceptual view showing a state where a connection terminal of an electronic device or the like is connected to a circuit board using the substrate terminal metal piece 1a.

The connection terminal 8 of an electronic device or the like is screwed to the internal thread 7 of the cylindrical body 5 via an external thread 9 so that the connection terminal 8 is mounted on the substrate terminal metal piece 1a.

When the external thread 9 is to be locked in the direction of the arrow symbol 11 to the internal thread 7, or when the external thread 9 is to be removed from the internal thread 7 in the direction of the arrow symbol 12, it is sometimes removed from the internal thread 7 or external thread. 9 Foreign matter caused by friction cutting such as metal pieces. Even if a foreign body is generated, the cylindrical body 5 is blocked by the bottom surface 5 a as described above, and thus the foreign body can be retained in the cylindrical body 5. Therefore, foreign objects caused by frictional cutting such as metal pieces will not fall on the lower side of the substrate terminal metal piece 1a in FIG. 4.

Based on this, it is possible to prevent the foreign matter from falling on the circuit board (not shown) in advance.

5 (a) and 5 (b) are diagrams showing other examples of the first embodiment.

In the embodiment shown in Figs. 5 (a) and 5 (b), the top plate 2 is not arranged in a horizontal state as shown in the embodiment of Figs. 1 to 4 but is arranged diagonally. Tilt down.

Therefore, the cylindrical body 5 formed on the inner side of the top plate 2 is not formed in a structure extending in a vertical direction as shown in the embodiment of FIGS. 1 to 4 but is arranged to face the inclination of the top plate 2. Tilt down.

The functions of the substrate terminal metal piece 1b shown in Figs. 5 (a) and 5 (b) are the same as those of the substrate terminal metal piece 1a already described using Figs. 1 to 4. Based on this, the same components as those of the substrate terminal metal 1a are denoted by the same reference numerals, and descriptions thereof are omitted.

(Embodiment 2)

Fig. 6 is a diagram showing an example of a second embodiment of the present invention. The same components as those of the substrate terminal metal piece 1a of the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted.

The substrate terminal metal piece 1c of this embodiment is provided with one of the side walls 3 of the side walls 3, 3 of the fixing claw portions 4, 4 for fixing to a circuit board such as a printed circuit board on the lower end side, and the side wall 3 is formed from the side wall 3 Through hole 6 which penetrates from the outer side to the inner side.

Next, the inside of the side wall 3 is provided with a communication hole. 6 is a hollow portion, and a cylindrical body 5 having an internal thread 7 is formed on an inner wall. The cylindrical body 5 is a bottomed cylindrical body having a bottom surface 5b.

That is, the substrate terminal metal piece 1a of the first embodiment is formed with a through hole 6 penetrating from the outer side to the inner side of the top plate 2, and a bottom cylindrical body 5 is provided on the inner side of the top plate 2. The substrate terminal metal piece 1c of this second embodiment is different from the first embodiment in that it is formed with a through hole 6 penetrating from the outer side to the inner side of the side wall 3, and is formed inside the side wall 3 A bottom cylindrical body 5 is provided on the side.

The method of forming the structure shown above and the functions and effects to be exerted by the structure are the same as those in the first embodiment.

The connection terminal 8 of an electronic device or the like is the same as that described with reference to FIG. 4, and the external screw 9 is screwed to the internal screw 7 of the cylindrical body 5 to be mounted on the substrate terminal metal piece 1 c.

When the external thread 9 is to be locked in the direction of the arrow symbol 13 or the internal thread 7 is to be removed from the internal thread 7 in the direction of the arrow symbol 14 even from the internal thread 7 or the external thread 9 Although a foreign object caused by friction cutting such as a metal piece is generated, the foreign object stays inside the cylindrical body 5. This is because the cylindrical body 5 is closed by the bottom surface 5b on the opposite side of the other side plate 3 as described above.

Based on this, it is possible to prevent the foreign matter from falling on the circuit board (not shown) in advance.

7 (a) and 7 (b) are diagrams showing other examples of the second embodiment.

Substrate end of the embodiment shown in Figs. 7 (a) and 7 (b) The sub-metal 1d does not include the top plate 2. On the other hand, it includes: a side wall 3 having a cylindrical body 5 formed on the inner side; and two side walls 3 and 3 extending in a direction in which the cylindrical body 5 extends.

In addition, the substrate terminal metal piece 1d does not include the side wall 3 located on the bottom surface side of the cylindrical body 5 as shown in the embodiment in FIG.

The functions of the substrate terminal metal piece 1d shown in Figs. 7 (a) and 7 (b) are the same as those of the substrate terminal metal pieces 1a, 1b, and 1c of the present invention which have been described using Figs. 1 to 6. , The same symbols are used for common components, and their descriptions are omitted.

In the above, the preferred embodiments of the present invention have been described with reference to the drawings. However, the present invention is not limited to these embodiments, and the technical scope can be grasped from the matters described in the scope of the patent application and various modifications can be made. .

Claims (5)

A substrate terminal metal piece is formed of a bent plate-shaped body and is provided with a substrate terminal metal piece fixed to a fixing claw portion for a circuit board, characterized in that one of the plurality of wall surfaces formed by the plate-shaped body is The wall surface is formed with a through hole penetrating from the outer side to the inner side of the wall surface, and a bottom cylindrical body is provided on the inner side of the wall surface, and the bottomed cylindrical body has a hollow portion inserted into the through hole. A female screw portion is formed in the inner peripheral wall, and the bottomed cylindrical body is integrally formed with the wall surface on which the through hole is formed. According to the substrate terminal metal piece described in claim 1, the bottomed cylindrical body is mounted on the inner side of the wall surface in which the through hole is formed. According to the substrate terminal metal member described in item 1 or 2 of the patent application scope, the fixed claw portion is the wall surface for forming a side wall of the substrate terminal metal member among a plurality of wall surfaces formed by the plate-shaped body. The wall surface on which the through hole is formed on the lower end side is a wall surface for forming a top plate of the substrate terminal metal piece connected to the upper end side of the side wall. According to the substrate terminal metal piece described in claim 3, the top plate is arranged to be inclined downward, and the cylindrical body is arranged to be inclined downward according to the inclination of the top plate. According to the substrate terminal metal piece described in item 1 or 2 of the scope of patent application, the fixed claw portion is formed of the wall surface for forming a side wall of the substrate terminal metal piece among a plurality of wall surfaces formed by the plate-shaped body. On the lower end side, the wall surface on which the through hole is formed is the side wall.