TWI584529B - Circuit board assembly - Google Patents

Description

Board assembly

The present invention relates to a circuit board assembly, and more particularly to a circuit board assembly for electrically connecting a bus bar and a circuit board by using a conductive metal plate.

Generally speaking, in a complete motor system, the circuit board assembly used to connect the power supply is an essential component, and the existing circuit board assembly is mainly provided with a bus bar for connecting the power supply on the circuit board. This method not only has insufficient tightness in contact, but also has limited ability to conduct, especially when used in a server or a storage device, which is more likely to cause problems due to the large amount of power supply required.

Referring to the first figure, the first figure shows a perspective view of a prior art circuit board assembly. As shown in the figure, a circuit board assembly PA100 includes a circuit board PA1 and two bus bars PA2 (only one is shown), and the circuit board PA1 is provided with two plugs PA12 (only one is shown), and two bus bars. The PA2 is a circuit that is respectively inserted into the second plug port PA12 to be electrically connected to the circuit board PA1.

As described above, since the existing circuit board PA1 is only provided with the plug port PA12 for the bus bar PA2 to be plugged, the contact between the bus bar PA2 and the plug port PA12 can only pass through the metal dome in the plug port PA12. Contact, so if the elasticity of the metal shrapnel is tired, it is easy to have poor contact.

In view of the fact that the existing circuit board assembly is provided with a plug-in port directly on the circuit board for plugging in the bus bar, there is often a situation of poor contact, which may cause danger or make power transmission ineffective; The inventor of the present invention invented a circuit board assembly which is soldered and connected to a circuit board through a conductive metal plate, and then the bus bar is locked on the circuit board and the conductive metal plate, and then the bus bar is closely contacted by locking. Electrically connected to the conductive metal plate of the circuit board.

The present invention solves the problems of the prior art, and the necessary technical means is to provide a circuit board assembly including a circuit board, at least one conductive metal plate, at least one bus bar, and at least one fixing member. The circuit board has at least one electrical connection region; the conductive metal plate is soldered to the electrical connection region and has at least one metal plate opening; the bus bar has a connection portion corresponding to the conductive metal a plate, and the bus bar has at least one fixing screw hole corresponding to the metal plate opening; the fixing member is fixedly connected to the fixing metal plate and the confluence via the metal plate opening The row is such that the conductive metal plate is electrically connected to the bus bar.

An auxiliary technical means derived from the above-mentioned necessary technical means is that the fixing member locks the bus bar to the circuit board with a rotational torque of between 20 kgf.cm and 40 kgf.cm, thereby reducing the bus bar and One of the impedance values between the boards.

An auxiliary technical means derived from the above-mentioned necessary technical means is that, within the range of the rotational torque, when the rotational torque is increased, the impedance value is relatively decreased.

An auxiliary technical means derived from the above-mentioned necessary technical means is that the circuit board has at least one circuit board locking hole corresponding to the opening of the metal plate, and the fixing component transmits the conductive metal plate through the circuit board locking hole The bus bar is locked to the circuit board.

An auxiliary technical means derived from the above-mentioned technical means is that the circuit board further has at least one positioning hole, the positioning hole is adjacent to the electrical connection area, and the conductive metal plate has at least one positioning portion, the positioning portion The card is connected to the positioning hole.

An auxiliary technical means derived from the above-mentioned necessary technical means is that the positioning hole and the positioning part are plural, and the positioning holes are symmetrically disposed around the electrical connection area, and the positioning parts respectively correspond to The ground card is disposed on the positioning holes.

An auxiliary technical means derived from the above-mentioned necessary technical means is that the conductive metal plate is a copper plate.

An auxiliary technical means derived from the above-mentioned necessary technical means is that the bus bar is a copper piece.

An auxiliary technical means derived from the above-mentioned necessary technical means is that the bus bar further comprises a bus bar body, and the connecting portion is bent and extended integrally from the bus bar body.

An auxiliary technical means derived from the above-mentioned necessary technical means is that the extending direction of the connecting portion is perpendicular to the extending direction of the bus bar body.

As described above, the circuit board assembly of the prior art is provided with a plug-in port for direct insertion of the bus bar. The present invention electrically connects the circuit board and the bus bar through the conductive metal plate, and can effectively stabilize the bus bar. Sexually connected to the circuit board to increase the stability of the busbar electrical connection to the circuit board.

Please refer to the second to fifth figures. The second drawing shows a schematic view of a circuit board assembly according to a preferred embodiment of the present invention. The third figure shows another circuit board assembly provided by the preferred embodiment of the present invention. FIG. 4 is a perspective exploded view showing a circuit board assembly according to a preferred embodiment of the present invention; and FIG. 5 is a perspective exploded view showing another circuit board assembly provided by a preferred embodiment of the present invention. schematic diagram.

As shown, a circuit board assembly 100 includes a circuit board 1, two conductive metal plates 2, 3, two bus bars 4, 5, and eight fixtures 6 (only one is shown).

The circuit board 1 extends along a first extending direction L1 and has a busbar mounting surface 11 and a fixing member locking surface 12 disposed opposite each other. The busbar setting surface 11 has two electrical connection regions 111 and 112, and the electrical connection region 111 is provided with four circuit board locking holes 1111 (only one is shown), and the electrical connection region 112 is provided with four circuit boards. Keyhole 1121 (only one is shown in the figure). In addition, the busbar setting surface 11 is further provided with two positioning holes 113 (only one is shown in the figure) and two positioning holes 114 (only one is shown in the figure).

The two positioning holes 113 are adjacent to the electrical connection region 111 and symmetrically disposed on both sides of the electrical connection region 111. The two positioning holes 114 are adjacent to the electrical connection region 112 and symmetrically disposed on both sides of the electrical connection region 112.

The conductive metal plate 2 is soldered to the electrical connection region 111 and has four metal plate openings 21 (only one is shown), and the conductive metal plate 2 has two positioning portions 22 (only one is shown) The two positioning portions 22 are respectively correspondingly engaged with the two positioning holes 113.

The conductive metal plate 3 is soldered to the electrical connection region 112, and has four metal plate openings 31 (only one is shown), and the conductive metal plate 3 has two positioning portions 32 (only one is shown) The two positioning portions 32 are respectively correspondingly engaged with the two positioning holes 114. The conductive metal plates 2 and 3 are copper plates in this embodiment, but are not limited thereto, and may be other conductive metals in other embodiments.

In addition, in practice, the conductive metal plates 2 and 3 are welded to one of the electrical connection regions 111 and 112 to have a plurality of protruding structures, and the electrical connection regions 111 and 112 are oppositely provided with a plurality of concave structures. Therefore, when the conductive metal plates 2 and 3 are soldered to the electrical connection regions 111 and 112, the welding can be made more tight by the cooperation of the convex structure and the concave structure, thereby effectively increasing the area of eating tin during soldering. .

The bus bar 4 includes a bus bar body 41 and a connecting portion 42 extending in a second extending direction L2 perpendicular to the first extending direction L1, and the connecting portion 42 is integrally formed from the bus bar body 41. It extends along the first extending direction L1 and corresponds to the conductive metal plate 2, and the connecting portion 42 is provided with four fixing screw holes 421 corresponding to the metal plate opening 21.

The bus bar 5 includes a bus bar body 51 and a connecting portion 52. The bus bar body 51 extends in a second extending direction L2 perpendicular to the first extending direction L1, and the connecting portion 52 is integrally formed from the bus bar body 51. The first extension direction L1 extends and corresponds to the conductive metal plate 3, and the connecting portion 52 defines four fixing screw holes 521 corresponding to the metal plate opening 31. The bus bars 4 and 5 are both a copper plate in this embodiment, but are not limited thereto, and may be other conductive metals in other embodiments. In addition, the bus bars 4 and 5 are actually provided with an insulating protective cover (not shown).

Four of the eight fixing members 6 are first passed through the circuit board locking hole 1111, then through the metal plate opening 21, and then locked to the fixing screw hole 421, thereby locking the conductive metal plate 2 and the bus bar 4 On the circuit board 1; the other four of the eight fixing members 6 pass through the circuit board locking hole 1121, pass through the metal plate opening 31, and then lock to the fixing screw hole 521, thereby making the conductive metal The board 3 and the bus bar 5 are locked to the circuit board 1. The busbars of the fixing member 6 are locked to the circuit board 1 and locked to the bus bar 4, so that the bus bar 4 is closely attached to the conductive metal plate 2, thereby electrically connecting the bus bar 4 to the conductive metal. The board 2, and in practice, the conductive metal plate 2 is a circuit connected to the circuit board 1 by soldering, whereby the bus bar 4 is electrically connected to the circuit of the circuit board 1 through the conductive metal plate 2; similarly, The bus bar 5 is also electrically connected to the conductive metal plate 3 through the locking of the fixing member 6 to be electrically connected to the circuit board 1 through the conductive metal plate 3.

In addition, in the embodiment, the fixing member 6 locks the bus bars 4, 5 to the circuit board 1 and the conductive metal plates 2, 3 with a rotational torque of between 20 kgf.cm and 40 kgf.cm, thereby reducing the confluence. The impedance value between the row 4, 5 and the circuit board 1; wherein, when the fixing member 6 is a screw of M5 size, the circuit loss between the rotational torque and the bus bar 4, 5 electrically connected to the circuit board 1 is as follows Table 1 shows:

As shown in the above table, in the range of the rotational torque of 20~40kgf.cm, when the rotational torque increases, the impedance value will decrease relatively.

Please refer to the sixth through seventh figures. The sixth figure shows a perspective view of a conductive metal plate soldered to a circuit board in a preferred embodiment of the present invention. The seventh figure shows a confluence in a preferred embodiment of the present invention. The arrangement is arranged on a conductive metal plate and fixed by a fixing member. As shown in the figure, in actual operation, first, the conductive metal plates 2, 3 are respectively soldered to the electrical connection regions 111, 112, and then the bus bars 4, 5 are respectively disposed on the conductive metal plates 2, 3, and finally The bus bars 4, 5 are then locked to the circuit board 1 by means of fixing members 6.

Please refer to FIG. 8 , which is a perspective view showing the application of the circuit board assembly provided by the preferred embodiment of the present invention to an electronic device. As shown, the circuit board assembly 100 of the present invention is disposed on an electronic device 200, and the bus bars 4, 5 are passed through by the electronic device 200 and electrically connected to a power source (not shown).

In summary, the circuit board assembly of the prior art is provided with a plug-in port for direct insertion of the bus bar. The present invention can effectively connect the circuit board and the bus bar through the conductive metal plate. The bus bar is firmly and electrically connected to the circuit board to increase the stability of the bus bar electrical connection to the circuit board. In addition, the user can reduce the impedance value between the bus bar and the circuit board by the increase of the rotational torque of the firmware element of the present invention.

The features and spirit of the present invention will be more apparent from the detailed description of the preferred embodiments. On the contrary, the intention is to cover various modifications and equivalents within the scope of the invention as claimed.

PA100‧‧‧Circuit board assembly

PA1‧‧‧ circuit board

PA2‧‧‧ busbar

PA12‧‧‧ plug connector

100‧‧‧Board components

1‧‧‧ boards

11‧‧‧ Busbar setting surface

111, 112‧‧‧Electrical connection area

1111, 1121‧‧‧ circuit board keyhole

113, 114‧‧‧ positioning holes

12‧‧‧Fixed parts

2, 3‧‧‧ conductive metal plate

21, 31‧‧‧Metal plate opening

22, 32‧‧‧ Positioning Department

4, 5‧‧ ‧ busbar

41, 51‧‧ ‧ bus body

42. 52‧‧‧ Connections

421, 521‧‧‧ fixed screw holes

6‧‧‧Fixed parts

200‧‧‧Electronic equipment

L1‧‧‧First extension direction

L2‧‧‧ second extension direction

The first figure shows a perspective view of a prior art circuit board assembly;

2 is a perspective view showing a circuit board assembly provided by a preferred embodiment of the present invention;

3 is a perspective view showing another perspective of a circuit board assembly according to a preferred embodiment of the present invention;

4 is a perspective exploded view showing a circuit board assembly provided by a preferred embodiment of the present invention;

5 is a perspective exploded view showing another perspective of a circuit board assembly according to a preferred embodiment of the present invention;

6 is a perspective view showing a conductive metal plate soldered to a circuit board in a preferred embodiment of the present invention;

7 is a perspective view showing a bus bar disposed on a conductive metal plate and fixed by a fixing member in a preferred embodiment of the present invention;

Figure 8 is a perspective view showing the application of the circuit board assembly provided by the preferred embodiment of the present invention to an electronic device.

100‧‧‧Board components

1‧‧‧ boards

11‧‧‧ Busbar setting surface

2, 3‧‧‧ conductive metal plate

4, 5‧‧ ‧ busbar

6‧‧‧Fixed parts

Claims (9)

A circuit board assembly comprising: a circuit board having at least one electrical connection region and at least one circuit board keyhole; at least one conductive metal plate soldered to the electrical connection region and having at least one corresponding to the a metal plate opening of the circuit board locking hole; at least one bus bar having a connecting portion corresponding to the conductive metal plate, and the bus bar having at least one fixing screw hole corresponding to the fixing screw hole The metal plate is opened; and the at least one fixing member is connected to the conductive metal plate and the bus bar via the circuit board locking hole, the metal plate opening and the fixing screw hole, thereby the conductive metal plate and the The bus bar is locked to the circuit board, and the conductive metal plate is electrically connected to the bus bar. The circuit board assembly of claim 1, wherein the fixing member locks the bus bar to the circuit board with a rotational torque of between 20 kgf.cm and 40 kgf.cm, thereby reducing the confluence One of the impedance values between the board and the board. The circuit board assembly of claim 2, wherein the impedance value is relatively decreased as the rotational torque is increased within the range of the rotational torque. The circuit board assembly of claim 1, wherein the circuit board further has at least one positioning hole adjacent to the electrical connection area, and The conductive metal plate has at least one positioning portion, and the positioning portion is engaged with the positioning hole. The circuit board assembly of claim 4, wherein the positioning hole and the positioning portion are plural, and the positioning holes are symmetrically disposed around the electrical connection region, and the positioning portions are Correspondingly, they are respectively disposed on the positioning holes. The circuit board assembly of claim 1, wherein the conductive metal plate is a copper plate. The circuit board assembly of claim 1, wherein the bus bar is a copper plate. The circuit board assembly of claim 1, wherein the bus bar further comprises a bus bar body, and the connecting portion is integrally bent and extended from the bus bar body. The circuit board assembly of claim 8, wherein the extending direction of the connecting portion is perpendicular to an extending direction of the bus bar body.