JP3112868B2 - Power supply for electronic devices - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device for an electronic device for supplying power to a circuit board of an electronic device requiring a large current, such as a large computer.

[0002]

2. Description of the Related Art Conventionally, when supplying (supplying) power to a circuit board of an electronic device, particularly when supplying a large amount of power, a power supply bus bar is used as a power supply medium, and the power supply bus bar is used. Connected to circuit board. At this time, the connection means on the circuit board side is such that a conductor such as copper foil connected to a power supply layer provided in the circuit board by a through hole or the like is provided on the surface of the circuit board, and a power supply bus bar is screwed to the conductor. Using a means for direct connection with a power supply, a means for attaching a power supply bus bar to a terminal structure such as a power supply block connected to a power supply layer provided in the circuit board by soldering or a press-fit method, or a power supply terminal (insert), Means for connecting the power supply terminal portion to a power supply layer provided in the circuit board via through holes, and connecting the power supply bus bar to the power supply terminal portion with screws or the like are employed.

FIGS. 5A and 5B show an example of a power supply device using a power supply terminal (insert) of a power supply device of a conventional electronic device as described above. FIG. 5A is a plan view, and FIG. FIG. 6 is a cross-sectional view taken along the line C, and FIG. 6 is a diagram showing details of a power supply terminal unit in the example of FIG.
(A) is a plan view and (b) is a front view.

As shown in FIG. 5, the circuit board 41 is provided with an upper power supply layer 48 for supplying a high voltage and a lower power supply layer 47 for supplying a low voltage. The power supply bus bar 43a is connected to the layer 48 by the lower power supply layer 47.
And a power supply bus bar 43b is provided for each of them, and they are connected via power supply terminal portions (inserts) 45, respectively.

As shown in FIG. 6, a power supply terminal (insert) 45 is formed by fixing a nut 51 to a lower surface of a central portion of a conductor member 49 formed in a substantially "U" shape, and to a lower end surface of both sides. A plurality of leads 44 are provided.

As shown in FIG. 5, the lead 44 of the lower power supply terminal (insert) 45 is inserted into a through hole 57 connected to the lower power supply layer 47 of the circuit board 41 and fixed by soldering or the like. Then, the power supply bus bar 43b is mounted on the upper surface of the central portion thereof, and the screw 46 is screwed into the nut 51 to fix the power supply bus bar 43b, so that the power supply bus bar 43b is connected to the lower power supply layer 47 via the insert 45. A low-voltage power is supplied to the lower power supply layer 47.
Supplies a low-voltage power supply to the LSI 2.

Similarly, when supplying a high-voltage power supply to the LSI 2, the lead 44 of the upper insert 45 is inserted and fixed in a through hole (not shown) connected to the upper power supply layer 48 of the circuit board 41. By mounting the power supply bus bar 43a on the insert 45 and fixing the screw 46 to the nut 51, a high voltage power is supplied from the power supply bus bar 43a to the upper power supply layer 48 via the insert 45,
A high-voltage power is supplied from the upper power supply layer 48 to the LSI 2.

[0008]

In a conventional power supply device for an electronic device using the above-described insert, only one type of voltage can be assigned to one insert. In a device with large power consumption, a large number of inserts must be used, so that the circuit board becomes large and the configuration of the power supply bus bar becomes complicated, so that there is a disadvantage that the device becomes large and the manufacturing cost increases. doing.

[0009] In recent years, large computers have been
The feature is that the usage rate of the S-LSI is high. Therefore, the responsiveness and the followability of the power supply in the power supply path to the high-speed fluctuation of the load current due to the change in the operation rate of the logic circuit are improved. As a countermeasure, the inductance of the power supply path by the power supply bus bar must be suppressed so as to be small. In general, the inductance component of a circuit behaves as a large resistance component when dealing with a signal that changes at high speed.If the inductance of the power supply path is large, the power supply momentarily fluctuates at the moment when the load current fluctuates suddenly, This is the same phenomenon as stopping.

As a means for reducing the inductance of the power supply path, it is effective to dispose the power supply bus bar, the high voltage side and the corresponding ground (GND) side opposite to each other. In a power supply device using an insert, only one type of voltage can be assigned to one insert. Therefore, a connection portion on the high voltage side and a corresponding connection portion on the GND side must be separately arranged on the circuit board. Therefore, the power supply busbars are separated at the connection part of the circuit board, and it is impossible to arrange them facing each other. Therefore, there is a problem that responsiveness and followability to power supply in the power supply path are deteriorated, and operation of the electronic device becomes unstable. In addition, if the response or follow-up to the power supply in the power supply path is poor, a large number of capacitors for supplying current to an electronic module such as an LSI are mounted on the circuit board in order to immediately respond to changes in load current. Therefore, there is a problem that the circuit board becomes larger.

An object of the present invention is to provide a power supply bus bar for a circuit board by using an insert so that two power supply bus bars can be arranged facing each other by using an insert. It is an object of the present invention to provide a power supply device for an electronic device that can reduce the area required for the connection portion of the electronic device, simplify the structure of the connection portion of the power supply bus bar, and reduce the inductance of the power supply path.

[0012]

[0013]

[0014]

[Means for Solving the Problems] First electronic device of the present invention
Power supply devices have two power supply layers that are insulated from each other.
Connected to each of the two power layers of the circuit board
With leads that are inserted and connected to through holes
With two conductor members insulated from each other by an edge
Insert and the two conductors of the insert
Two insulated supplies in contact with each of the materials
Power bus bar and the two power feeding bus bars
And a screw member for fixing it to the
An outer conductor member having a large diameter hole in the center and
It is disposed inside the outer conductor member and is formed in a "U" shape.
The outer conductor member projecting upward from the lower half and the center thereof.
And a cylindrical upper half penetrating the hole of
Body member, between the outer conductor member and the inner conductor member.
An insulator provided to insulate them, and the inner conductor member
Nut fixed to the lower surface of the upper half of the cylindrical shape
And each of the outer conductor member and the inner conductor member
Of the U-shaped portion is projected downward from the lower surface of the side of the U-shaped portion.
Each of the two power supply layers of the circuit board
And inserted into the corresponding through hole of the power supply layer
Providing an insert having a plurality of the leads
It is characterized by. The power supply device of the second electronic device according to the present invention includes:
Of a circuit board having two power supply layers insulated from each other
Through holes connected to each of the two power supply layers
With leads that are inserted into the
Insert having two insulated conductor members
And each of the two conductor members of the insert
Two insulated power supply busbars in contact with each other,
The two power busbars are fixed to the insert
And is formed in a “U” shape and has a large
Outer conductor member having a hole with a variable diameter, and the outer conductor member
The lower half and the "U" shaped
Projecting upward from the center and penetrating into the hole of the outer conductor member
Having a cylindrical upper half portion, and
An inner conductor member having a female screw formed on a surface thereof, and the outer conductor portion
Provided between the material and the inner conductor member to insulate them
Insulator, the outer conductor member and the inner conductor member
Projecting downward from the lower surface of the side of each of the U-shaped portions
Provided in front of the circuit board Of the two power layers,
Insert into the corresponding through hole of the power layer
And an insert having a plurality of said leads
It is characterized by that. Power supply device of third electronic device of the present invention
Is a circuit having two power supply layers insulated from each other
Switches connected to each of the two power supply layers of the substrate.
It has a lead that is inserted into the
Having two conductor members insulated from each other
A support and that of the two conductor members of the insert
Two insulated power supply busbars in contact with each other
And fix the two power supply busbars to the insert
And a screw member which is formed in a "U" shape and has a central portion.
An outer conductor member having a large diameter hole therein;
Lower half part arranged inside the body member and formed in a "U" shape
And the hole of the outer conductor member projecting upward from the center thereof.
And has a cylindrical upper half projecting upward through the
Inner conductor member with external threads formed on the outer periphery of the cylindrical upper half
And between the outer conductor member and the inner conductor member.
And an insulator that insulates the two, the outer conductor member and
Of the side of the U-shaped portion of each of the inner conductor members
The second of the circuit board is provided to protrude downward from the lower surface.
Of the power supply layer corresponding to each of the power supply layers
Having a plurality of said leads to be inserted into through holes
And the two power supply busbars are
The screw member for fixing the insert to the inner conductor member
A nut that is screwed to the male screw in the upper part of the cylinder
It is characterized by having.

[0015]

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

FIGS. 1A and 1B show a first embodiment of the present invention. FIG. 1A is a plan view, and FIG. 1B is a sectional view taken along line AA.
FIG. 2 is a diagram showing details of a power supply terminal unit of the embodiment of FIG.
(A) is a plan view, (b) is a cross section taken along line BB, and (c) is a bottom view.

In FIG. 1, a large-scale integrated circuit (LSI) 2 to be supplied with power and other electronic components (electronic modules) are mounted on a circuit board 1, and these are mounted inside the circuit board 1. A voltage is supplied via the lower power supply layer 7 and the lower power supply layer 8 provided. The lower power supply layer 7 and the lower power supply layer 8 are insulated.

The voltage supplied from the power supply device (not shown) is supplied to the circuit board 1 via the power supply terminal (insert) 15 by the upper power supply bus bar 3 and the lower power supply bus bar 5.
Supplied to

The insert 15 is, as shown in FIG.
An outer conductor member 9 formed in a "U" shape and having a large-diameter hole in the center portion, and a lower half portion formed in the outer conductor member 9 and formed in a "U" shape and the center thereof. An inner conductor member having a cylindrical upper half projecting upward and penetrating into a hole of the outer conductor member, and an insulator provided between the outer conductor member and the inner conductor member to insulate them; 12
And a nut 11 fixed to the lower surface of the cylindrical protrusion of the inner conductor member 10.

A plurality of leads 13 and 14 are respectively provided on the lower surfaces of the sides of the "U" -shaped portion of the outer conductor member 9 and the inner conductor member 10 so as to protrude downward.
The upper half of the insulator 12 is formed in a cylindrical shape protruding upward, into which the cylindrical protrusion of the inner conductor member 10 is inserted. Instead of fixing the nut 11 on the lower surface of the cylindrical protrusion of the inner conductor member 10, a female screw may be formed on the inner surface of the cylindrical protrusion.

The upper power supply bus bar 3 and the lower power supply bus bar 5 are connected to the circuit board 1 as shown in FIG.

That is, the leads 13 of the outer conductor member 9 and the leads 14 of the inner conductor member 10 are inserted into through holes 17 and 18 provided in the circuit board 1, respectively.
The outer conductor member 9 and the inner conductor member 10 are brought into contact with the upper surface of the circuit board 1 to be stabilized, and the leads 13 and 14 are fixed to the through holes 17 and 18 by soldering or press-fitting, respectively. In addition, through hole 1
7 is connected to the lower power supply layer 7 in the circuit board 1 but is insulated from the upper power supply layer 8 and
8 is connected to the upper power supply layer 8 in the circuit board 1 but is insulated from the lower power supply layer 7.

Next, the lower power supply bus bar 5 is mounted on the center side of the outer conductor member 9 of the insert 15, the insulator 4 is mounted thereon, and the upper power supply bus bar 3 is mounted thereon, and The upper power supply bus bar 3, the insulator 4, and the lower power supply bus bar 5 are fixed by inserting 6 into the cylindrical protrusion of the inner conductor member 10 and screwing it to the nut 11. Thereby, the lower power supply bus bar 5 is connected to the outer conductor member 9 and the upper power supply bus bar 3 is connected to the inner conductor member 1.
0 and connected. At this time, the lower power supply bus bar 5 and the upper power supply bus bar 3 are insulated by the insulator 4, and the outer conductor member 9 and the inner conductor member 10 are insulated by the insulator 12. In addition, the outer conductor member 9 and the lower power supply layer 7 are insulated from the upper power supply bus bar 3, the inner conductor member 10 and the upper power supply layer 8.

In order to enable the above-described configuration, the lower power supply bus bar 5 is provided with a hole through which the cylindrical upper half of the insulator 12 can penetrate, and the upper power supply bus bar 3 has a screw 6. The hole which can penetrate is provided.

Therefore, when a high voltage (for example, 2.5 volts) is supplied to the lower power supply bus bar 5 and the upper power supply bus bar 3 is grounded, the high voltage and the low voltage can be disposed so as to face each other. It is possible to reduce the area of the connection portion of the power supply bus bar on the substrate and to simplify the structure of the connection portion of the power supply bus bar. In addition, since the directions in which currents flow can be opposite to each other, it is possible to reduce the inductance of the power supply path and improve the responsiveness and followability to power supply in the power supply path when the load current fluctuates rapidly. It becomes possible.

FIG. 3 is a sectional view showing a second embodiment of the present invention.

The present embodiment has almost the same configuration as the embodiment of FIG. 1, except that the lower power supply bus bar 5 and the insert 15
The spring washer 16 is provided between the outer conductor member 9 and the outer conductor member 9. Other configurations are the same as those of the embodiment of FIG. With this configuration, it is possible to absorb the manufacturing error of the power supply bus bar and the insert and to reliably bring the power supply bus bar into contact with the insert.

FIG. 4 is a sectional view showing a third embodiment of the present invention.

The present embodiment has almost the same configuration as the embodiment of FIG. 1, except that the center portion of the inner conductor member 20 is formed into a columnar shape and is protruded long upward. Are screw-connected to fix the upper power supply bus bar 3, the insulator 4, and the lower power supply bus bar 5 to the insert 25, and the operation and effect are the same as those of the embodiment of FIG.

[0030]

As described above, the power supply device for an electronic device according to the present invention uses an insert having double conductor members insulated from each other by an insulator, and connects two power supply bus bars to a double conductor. Each of the members is connected by one screw member so that the two power supply bus bars are arranged to face each other, and a double conductor member is provided on each of the two insulated power supply layers provided on the circuit board. Can supply two kinds of voltages with one insert, so that the area required for the connection portion of the power supply bus bar on the circuit board can be reduced, and the connection of the power supply bus bar can be reduced. There is an effect that the structure of the unit can be simplified, and thus it is possible to contribute to downsizing of the electronic device. Also,
Since the power supply busbars can be arranged to face each other, two power supply busbars are assigned to each of the high-voltage busbar and the low-voltage bus, which is the return of the current, so that the current flows in opposite directions. Therefore, there is an effect that the inductance of the power supply path can be reduced, and therefore, it is possible to improve responsiveness and followability to power supply in the power supply path when the load current fluctuates rapidly. effective.

[Brief description of the drawings]

FIGS. 1A and 1B are diagrams showing a first embodiment of the present invention, in which FIG. 1A is a plan view, and FIG.

2A and 2B are diagrams showing details of a power supply terminal unit of the embodiment of FIG. 1, wherein FIG. 2A is a plan view, FIG. 2B is a cross-sectional view taken along line BB, and FIG.

FIG. 3 is a sectional view showing a second embodiment of the present invention.

FIG. 4 is a sectional view showing a third embodiment of the present invention.

FIG. 5 is a diagram illustrating an example of a power supply device of a conventional electronic device.
(A) is a plan view, and (b) is a cross-sectional view taken along line CC.

FIG. 6 is a diagram showing details of a power supply terminal unit in the example of FIG. 5;
(A) is a plan view and (b) is a front view.

[Explanation of symbols]

 1.41 Circuit board 2 LSI 3 Upper power supply bus bar 4 12.22 Insulator 5 Lower power supply bus bar 6.46 Screw 7.47 Lower power supply layer 8.48 Upper power supply layer 9.19 Outer conductor member 10.20 Inside Conductor member 11, 21, 51 Nut 13, 14, 23, 24, 44 Lead 15, 25, 45 Power supply terminal (insert) 16 Spring washer 17, 18, 57 Through hole 43a, 43b Power supply bus bar 49 Conductor member

Claims (5)

(57) [Claims] 1. A circuit board having two power supply layers insulated from each other and having leads connected to through holes connected to each of the two power supply layers and insulated from each other by an insulator. Insert having two conductor members, two power supply busbars in contact with each other of the two conductor members of the insert, and the two power supply busbars are fixed to the insert. Screw member, and is formed in a “U” shape.
An outer conductor member having a large diameter hole in the center and
It is disposed inside the outer conductor member and is formed in a "U" shape.
The outer conductor member projecting upward from the lower half and the center thereof.
And a cylindrical upper half penetrating the hole of
Body member, between the outer conductor member and the inner conductor member.
An insulator provided to insulate them, and the inner conductor member
Nut fixed to the lower surface of the upper half of the cylindrical shape
And each of the outer conductor member and the inner conductor member
Of the U-shaped portion is projected downward from the lower surface of the side of the U-shaped portion.
Each of the two power supply layers of the circuit board
And inserted into the corresponding through hole of the power supply layer
A power supply device for an electronic device , comprising: an insert having a plurality of leads . 2. A power supply device comprising two power supply layers insulated from each other.
Connected to each of the two power layers of the circuit board
With leads that are inserted and connected to through holes
With two conductor members insulated from each other by an edge
Insert and the two conductors of the insert
Two insulated supplies in contact with each of the materials
Power bus bar and the two power feeding bus bars
And a screw member for fixing it to the
An outer conductor member having a large diameter hole in the center and
It is disposed inside the outer conductor member and is formed in a "U" shape.
The outer conductor member projecting upward from the lower half and the center thereof.
A cylindrical upper half part penetrated into the hole of
An inner conductor member formed with a female screw on the inner surface of the upper half of the shape,
Provided between the outer conductor member and the inner conductor member
An insulator that insulates both, the outer conductor member and the insulator
The lower surface of the side of each of the U-shaped portions of the inner conductor member
Is provided so as to protrude downward from the two layers of the circuit board.
The through holes of the power supply layer corresponding to the respective ones of the power supply layers.
B and a front Symbol lead a plurality of which are inserted into Horu
Feed unit for electronic apparatus comprising: a concert. 3. The power supply bus bar and the inserter.
An elastic body is interposed between the elastic member and the
A power supply device for an electronic device according to claim 1 . 4. A spring washer is used as said elastic body.
The power supply device for an electronic device according to claim 3, wherein 5. A semiconductor device comprising two power supply layers insulated from each other.
Connected to each of the two power layers of the circuit board
With leads that are inserted and connected to through holes
With two conductor members insulated from each other by an edge
Insert and the two conductors of the insert
Two insulated supplies in contact with each of the materials
Power bus bar and the two power feeding bus bars
And a screw member for fixing it to the
An outer conductor member having a large diameter hole in the center and
It is disposed inside the outer conductor member and is formed in a "U" shape.
The outer conductor member projecting upward from the lower half and the center thereof.
And a columnar upper half projecting upward through the hole.
Inside with external threads formed on the outer periphery of the cylindrical upper half
A conductor member, between the outer conductor member and the inner conductor member;
An insulator provided between the outer conductor and the outer conductor;
The U-shaped portion of each of the material and the inner conductor member
The circuit board is provided so as to protrude downward from the lower surface of the side of
The power supply corresponding to each of the two power supply layers
A plurality of said leads inserted into said through holes of a layer
Said two power supply bus bars, comprising an insert having
The screw member for fixing the
A screw that is screwed to the male screw of the cylindrical upper half of the material
Tsu bets and the possible feed unit for electronic apparatus wherein.