JPH11149330A - Power unit and computer system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely prevent various troubles in system operation due to misoperation at the time of fault replacement of the power unit by providing a lock mechanism which disables the power unit from be replaced if the power switch is not turned OFF. SOLUTION: When an AC switch 12 is at its switch-ON position, the OFF-side operation part of the switch projects from the panel surface of a housing to block the slide passage of the slide plate 13a of the lock mechanism and the lower end of the slide plate (a) is positioned in a PC server housing 10. The slide plate 13a and PC server housing 10 can not be disengaged when the slide plate 13a is not made slidable to the slide upper end by turning OFF the AC switch 12 so that the OFF-side operation part of the switch is in level with the panel surface of a unit housing. Consequently, when the power unit 11 is replaced, the power unit 11 can be detached from the PC server housing 10 before the AC switch 12 is turned OFF.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply having a function of replacing a redundant power supply unit during operation, which is suitable for use in a computer system. The present invention also relates to a computer system, such as a PC server, in which a housing is provided with a plurality of redundant power supply unit mounting mechanisms so that the power supply unit can be replaced during operation.

[0002]

2. Description of the Related Art Recently, P in computer systems has been increasing.
As for the power supply of the C server or the like, the number of models adopting a redundant system using a duplex or N + 1 system is increasing. As a feature of the redundant power supply system, when one of a plurality of power supply units constituting the power supply system fails, there is a function of replacing the power supply of the system with another normal power supply without shutting down the power supply of the system.

[0003] This function is called an in-operation switching function, which allows a power supply to be replaced or added without interrupting the operation of the system, and thus is a very effective function as a highly reliable PC server.

[0004] Means of realizing the function of switching during operation by a redundant power supply will be described with reference to FIGS. 8 and 9. FIG. 8 is a view of the PC server as viewed from the rear side, and replacement of the power supply unit during operation is performed by inserting and removing the power supply unit from the rear side toward the front. FIG. 9 is a block diagram showing the internal power supply configuration of FIG.

[0005] In the figure, reference numeral 80 denotes a PC server housing;
1 is a power supply unit constituting a redundant power supply, 82 and 82 are power on / off switches (AC switches) provided on the back of the housing of the power supply units 81 and 81, 83 is an AC power distribution circuit, a fuse box, An AC power input unit (ACBOX) 84 provided with a noise filter and the like connects the power supply units 81 and 81 to the circuit, and
Power supply back panel unit (power supply B) that supplies the power generated in step 1 (here, DC output power) to each load of the PC server.
P).

In the PC server, two power supply units (power supply 1 and power supply 2) 81, 81 can be mounted in a housing 80. The PC server can operate the system by using one of the power supply units (power supply 1 or power supply 2) 81.

Here, if one of the power supply units (power supply 1 or power supply 2) 81 fails, the output of the failed power supply unit 81 is stopped, but the control signal and the like between the power supply units are controlled by the AC power supply. May be output as long as is turned on. Therefore, in order to stabilize the power output of the PC server, when replacing the unit, turn off the AC switch of the faulty power supply unit (after turning off the switch). In general, a method of removing the failed power supply unit from the housing is used.

Also, instead of a failed power supply unit,
When a normal power supply unit is mounted, the power supply output and control signals are turned off, and the power supply output becomes unstable unless inserted (mounted) into the housing. Implement.

By performing the above power supply attachment / detachment control,
Even if the power supply unit fails, the failed power supply can be replaced without stopping the power supply to the system.
In addition to the above-described configuration, a configuration in which an AC power supply is turned on / off by directly inserting an AC cable plug into the AC inlet of the power supply unit and inserting and removing the AC cable plug into and from the AC inlet. Some are.

However, in the above-described conventional power supply mounting structure of the PC server, the power supply unit can be inserted and removed without turning off the AC switch (or with the plug of the AC cable inserted into the AC inlet). Therefore, when removing / mounting the power supply unit, the operation procedure is incorrect, the AC switch is forgotten to be turned off (AC switch is turned on), or the plug of the AC cable is inserted into the AC inlet, It is possible to replace it, in this case, stop the system power,
Since there is a possibility that system initialization may occur, there remains a problem that a serious accident may occur in a PC server in which high reliability is emphasized. These problems are not limited to PC servers, and similar problems occur in computer systems having other redundant power supplies.

[0011]

As described above, in the conventional power supply mounting structure in the PC server, the AC cable can be plugged into the AC cable without turning off the AC switch (or by plugging the AC cable into the A port).
Since the power supply unit can be inserted and removed even when the power supply unit is inserted in the C inlet, the operation procedure is incorrect when removing / mounting the power supply unit, forgetting to turn off the AC switch (while the AC switch is turned on), or The power supply unit may be replaced while the cable plug is inserted into the AC inlet. In this case, the system power supply may be stopped, the system may be initialized, and the like.
There is a problem that a serious accident may occur in a PC server that attaches importance to high reliability. Another computer system having a redundant power supply has the same problem.

The present invention has been made in view of the above circumstances,
In a power supply unit having an exchange function during operation of a power supply unit applied to a computer system, each power supply unit is provided with a locking mechanism in which the power supply unit cannot be replaced unless a power switch is turned off. An object of the present invention is to provide a power supply unit having a function of replacing a redundant power supply unit during operation, which can reliably prevent various inconveniences in system operation due to an operation error at the time of unit replacement or the like. And

The present invention also provides a power supply unit having a function of replacing a power supply unit during operation applied to a computer system, unless the power supply unit is disconnected from the power supply unit through a power supply plug. The power supply unit is provided with a locking mechanism that cannot be replaced, so that various inconveniences in system operation due to operation errors at the time of failure replacement of the power supply unit can be reliably prevented. An object of the present invention is to provide a power supply device having an in-service switching function.

The present invention also provides a computer system, such as a PC server, in which a housing is provided with a plurality of power supply unit mounting mechanisms constituting a redundant power supply, and the power supply unit can be replaced during operation. If the provided power switch is not turned off, the power supply unit is provided with a locking mechanism that cannot be replaced with each power supply unit,
It is an object of the present invention to provide a computer system that can be replaced during operation of a power supply unit, which can reliably prevent various inconveniences in system operation due to an operation error at the time of failure replacement of a power supply unit. I do.

The present invention also provides a computer system, such as a PC server, in which a housing is provided with a plurality of power supply unit mounting mechanisms constituting a redundant power supply, and the power supply unit can be replaced during operation. The power supply unit is provided with a locking mechanism that cannot be replaced unless the power plug is pulled out of the inlet, and various inconveniences in system operation due to operation mistakes at the time of failure replacement of the power supply unit, etc. It is an object of the present invention to provide a computer system capable of reliably replacing the power supply unit while the power supply unit is in operation.

[0016]

According to the present invention, a power supply unit is provided with a locking mechanism related to an AC power input mechanism such as a power switch and a power plug, so that the power switch is not turned off or the power supply unit inlet is provided. The power supply unit cannot be replaced unless the power plug is unplugged.

That is, the present invention relates to a power supply device capable of mounting a plurality of power supply units in a housing and exchanging the power supply units without interrupting the system operation. When the power switch of the unit is in the switch-on position, the operation is restricted, and when the power switch is in the switch-off position, the restriction is released, and a locking mechanism is provided to enable the unit to be removed from the housing.

The present invention also relates to a power supply device in which a plurality of power supply units can be mounted on a housing and the power supply units can be replaced without interrupting system operation. When the power plug is inserted into the AC power input inlet of the unit, the operation is restricted, and when the power plug is unplugged, the restriction is released and the locking mechanism is provided to enable the unit to be removed from the housing. It is characterized by becoming.

Further, the present invention provides the above power supply device,
The locking mechanism is characterized by using a slide plate movable in a linear direction or a slide plate rotating around a fulcrum.

Further, the present invention provides the above power supply device,
A toggle switch is used as a power switch, and when the switch is turned on by operating the on-side operation unit (on-side abdomen of the operation button) of the switch, the off-side operation unit (off-side abdomen of the operation button) is a panel of the housing. The off-side operation unit protrudes from the surface and closes the slide path of the slide plate, and when the off-side operation unit is operated to be in the switch-off state, the off-side operation unit is flush with or immersed in the panel surface of the housing. The slide passage of the slide plate is released.

Further, according to the present invention, in the above power supply device,
A slide plate having a vertical passage end at a position that partially covers the off-side operation portion of the power switch and a position that projects a predetermined amount from the lower end of the unit housing, and a slide that slidably supports the slide plate and fixes the slide plate at an arbitrary position. The locking mechanism is constituted by a plate supporting fixing screw and a slide guide hole into which the slide plate supporting fixing screw is fitted.

Further, according to the present invention, in the above power supply device,
When the plug is inserted into the inlet, the plug closes the slide passage of the slide plate, and when the plug is removed from the inlet, the slide passage of the slide plate is released.

Further, the present invention provides the above power supply device,
A slide plate having upper and lower passage ends at a position covering a part of the surface of the AC power input inlet and a position protruding from the lower end of the unit housing by a predetermined amount, and a slide plate slidably supporting the slide plate and fixing the slide plate at an arbitrary position. The locking mechanism is characterized by comprising a support fixing screw and a slide guide hole into which the slide plate support fixing screw is fitted.

Further, the present invention relates to a computer system such as a PC server in which a housing is provided with a plurality of power supply unit mounting mechanisms constituting a redundant power supply and a power supply unit can be replaced during operation. An AC switch for controlling the supply of external AC power to the power supply circuit inside the unit; a slide amount when the AC switch is in a switch-on position; and a slide amount when the AC switch is in a switch-off position. When the regulation is released and the slide amount is regulated, the power supply unit can be fixed to the fixed position in the computer system housing, and when the slide amount restriction is released, the power supply unit can be removed from the computer system housing And a slide plate that:

The present invention also relates to a computer system, such as a PC server, in which a housing is provided with a plurality of power supply unit mounting mechanisms constituting a redundant power supply so that the power supply unit can be replaced during operation. Inlet for receiving AC power supplied from the outside via an AC cable and an AC plug in the housing of the integrated power supply unit, and when the AC plug is inserted into the AC inlet, the amount of sliding is regulated. When the slide amount is not inserted, the regulation of the slide amount is released, and when the slide amount is regulated, the power supply unit is fixed at a fixed position in the housing of the computer system. A slide plate that allows the unit to be removed from the housing of the computer system.

According to the present invention, in the above computer system, a toggle switch is used as an AC switch, and when the switch is turned on by operating an on-side operation unit of the switch, the off-side operation unit is a panel of a housing. The off-side operation part protruding from the surface closes the slide passage of the slide plate,
When the switch is turned off by operating the off-side operation unit, the off-side operation unit is flush with or immersed in the panel surface of the housing to release the slide passage of the slide plate. .

According to the present invention, in the above computer system, when the AC plug is inserted into the AC inlet, the AC plug closes the slide passage of the slide plate, and when the AC plug is pulled out from the AC inlet, the slide plate is closed. Characterized in that the slide passage is released.

As described above, in the power supply unit having the function of replacing the power supply unit during operation applied to the computer system, the power supply switch is not turned off or the power supply plug is disconnected from the inlet of the power supply unit. By equipping each power supply unit with a mechanism that does not allow the power supply unit to be replaced unless the power supply unit becomes defective, it is possible to reliably prevent various inconveniences in system operation due to operation mistakes at the time of failure replacement of the power supply unit. it can.

Also, in a computer system in which a housing is provided with a plurality of power supply unit mounting mechanisms constituting a redundant power supply and the power supply unit can be replaced during operation, the power supply switch is not turned off, or the power supply unit is not turned off. If the power plug is not pulled out from the inlet of
By providing a mechanism in which the power supply unit cannot be replaced in the power supply unit, it is possible to reliably prevent various inconveniences in system operation due to an operation error at the time of failure replacement of the power supply unit or the like.

[0030]

Embodiments of the present invention will be described below with reference to the drawings. Here, a PC server is taken as an example of a computer system for realizing the present invention. 1 to 3
FIG. 1 is a view for explaining a first embodiment of the present invention. FIG. 1 is a view of a PC server as viewed from the rear, FIG. 2 is a front view showing a configuration of a main part in the first embodiment, and FIG. Is a side view of the same.

In the figure, 10 is a PC server (PDV)
11 and 11 are power supply units (PS) housed in the housing 10 so as to be able to be inserted and removed from the rear part. Reference numeral 12 denotes a power on / off switch (AC switch) provided in each of the power supply units (PS) 11.
Here, it is configured using a toggle switch called a waveform switch, and is turned on / off each time the unit is replaced. This AC switch (SW) 12 is turned on (ON).
When the operation unit (on the abdomen of the operation button) is pressed to switch on, the operation unit on the off (OFF) side (off side abdomen of the operation button) protrudes from the panel surface of the unit housing and is turned off. The off-side operation unit is mounted so as to be flush with the panel surface of the housing when the side operation unit is pressed to switch off.

Reference numeral 13 denotes a locking mechanism (LM) provided in each of the power supply units (PS) 11, as shown in FIGS. 2 and 3, a slide plate 13a, a slide plate support fixing screw 13b, a slide It is constituted by a guide hole 13c.

The slide plate 13a is provided with a slide guide 14 and a slide guide hole 13 provided in the unit housing.
c, as shown by the solid line and the two-dot chain line in FIG.
Lower half of the operation part of switch (SW) 12 (OFF side operation part)
The slide position and the slide amount are regulated by using the position and the position projecting from the lower end of the unit housing by a predetermined amount as upper and lower passage ends.

The slide plate supporting fixing screw 13b is
The slide plate 13a is loosely inserted into the slide guide hole 13c of the slide plate 13a, slidably supports the slide plate 13a, and fixes the slide plate 13a at an arbitrary slide position by tightening screws.

In the above configuration, an AC switch (SW)
When the switch 12 is in the switch-on position, the off-side operation portion (off-side abdomen of the operation button) of the switch protrudes from the panel surface of the housing, and the slide plate 1 of the locking mechanism (LM) 13
3a, the slide plate 13a is closed as shown in FIG.
Since the slide plate 13a cannot be slid to the slide upper end shown by the two-dot chain line, the lower end of the slide plate 13a is located inside the PC server (PDV) housing 10.

Accordingly, the AC switch (SW) 12 is turned off so that the off-side operation portion of the switch (off-side abdomen of the operation button) is flush with the panel surface of the unit housing, and The engagement between the slide plate 13a and the PC server (PDV) housing 10 cannot be released unless the slide plate 13a is slid to the upper end of the slide as shown by a two-dot chain line in FIG.

Thus, when the power supply unit (PS) 11 is to be replaced in the PC server (PDV), the power supply unit (PS) 11 must be turned off unless the AC switch (SW) 12 is turned off. ) 11 cannot be removed from the PC server (PDV) housing 10.

Also, when the power supply unit (PS) 11 is housed (attached) in the PC server (PDV) case 10, the AC switch (SW) 12 is turned off and the switch is turned off. Unless the slide plate 13a can be slid to the upper end of the slide as shown by a two-dot chain line in FIG. 2, the part (off side abdomen of the operation button) is flush with the panel surface of the unit housing. The board 13a is engaged with the PC server (PDV) housing 10, and the power supply unit (PS) 11 is connected to the PC server (PD).
V) Cannot be stored in the housing 10.

Thus, even when the power supply unit (PS) 11 is to be mounted on the PC server (PDV) housing 10, unless the AC switch (SW) 12 is turned off, the power supply unit (PS) 11 is not turned off. ) 11 cannot be stored in the PC server (PDV) housing 10.

By providing the above-described locking mechanism (LM) 13 in each of the power supply units (PS) 11, 11, the system associated with an erroneous operation of the AC switch (SW) 12 at the time of failure replacement of the power supply unit or the like. Various inconveniences in operation can be reliably prevented.

The locking mechanism (LM) 13 can be realized at very low cost without requiring any expensive parts, and does not require any special work on the PC server (PDV) housing 10, so that the entire system is not required. Can be suppressed extremely low, and therefore can be easily applied not only to the PC server but also to various computer systems that require stable operation at all times.

FIGS. 4 to 6 are views for explaining the second embodiment of the present invention. FIG. 4 is a rear view of the PC server, FIG. 5 is a front view showing the structure of the main part, and FIG. It is a side view.

In the figure, 20 is a PC server (PDV)
Reference numerals 21 and 21 denote power supply units (PS) housed in the housing 20 so as to be able to be inserted and removed from the rear part. Reference numeral 22 denotes an AC power supply input inlet provided in each of the power supply units (PS) 21.

Reference numerals 23a to 23c each constitute a component of a locking mechanism provided in each power supply unit (PS) 21. Reference numeral 23a denotes a slide plate, 23b denotes a slide plate support fixing screw, and 23c denotes a slide guide hole. .

The slide plate 23a is provided with a slide guide 24 and a slide guide hole 23 provided in the unit housing.
c, as shown by the solid line and the two-dot chain line in FIG.
The slide position and the slide amount are regulated by using the lower half position of the power input inlet 22 and the position projecting from the lower end of the unit casing by a predetermined amount as the upper and lower passage ends.

The slide plate supporting fixing screw 23b is
The slide plate 23a is loosely inserted into the slide guide hole 23c of the slide plate 23a to slidably support the slide plate 23a, and the slide plate 23a is fixed at an arbitrary slide position by tightening a screw.

Reference numeral 25 denotes a power plug at the end of a power cord inserted into the AC power input inlet 22. In the above configuration, when the power plug 25 provided at the end of the power cord is inserted into the AC power input inlet 22, the power plug 25 closes the slide passage of the slide plate 23a, and the slide plate 23a is Because it is not possible to slide to the slide upper end shown by the two-dot chain line in 5,
The lower end of the slide plate 23a is a PC server (PDV) housing 2
0.

Therefore, unless the power plug 25 is removed from the AC power supply input inlet 22 and the slide plate 23a is slid to the upper end of the slide as shown by the two-dot chain line in FIG. 5, the slide plate 23a and the PC server (P
DV) The engagement with the housing 20 cannot be released.

Accordingly, when the power supply unit (PS) 21 is to be replaced in the PC server (PDV), the power plug 25 is removed from the AC power input inlet 22 and the supply of AC power is cut off. Otherwise, the power supply unit (PS) 21 cannot be removed from the PC server (PDV) housing 20.

When the power supply unit (PS) 11 is housed (attached) in the PC server (PDV) housing 10, the power plug 25 is removed from the AC power input inlet 22, and the slide plate 23a is moved to the position shown in FIG. If the slide plate 23a and the PC server (PDV) housing 20 cannot be disengaged unless the slide top is slid to the upper end of the slide as shown by the two-dot chain line in FIG.

Thus, even when the power supply unit (PS) 11 is to be mounted on the PC server (PDV) housing 10, the power plug 25 is removed from the AC power input inlet 22, and the supply of AC power is cut off. Otherwise, the power supply unit (PS) 21 cannot be stored in the PC server (PDV) housing 20.

By providing the locking mechanism as described above in each of the power supply units (PS) 21 and 21, various inconveniences in the system operation due to an AC power supply error at the time of failure replacement of the power supply unit or the like can be ensured. Can be prevented.

Further, the locking mechanism can be realized at very low cost without requiring any expensive parts, and does not require any special work on the PC server (PDV) housing 20, so that the cost of the entire system increases. Therefore, the present invention can be easily applied not only to a PC server but also to various computer systems that require stable operation at all times.

FIG. 7 is a diagram showing a configuration of a main part according to a third embodiment of the present invention. In FIG. 7, reference numeral 30 denotes a housing of a PC server (PDV).
A power supply unit (PS) housed in a C server (PDV) housing 30 so that it can be inserted and removed from the back.

Reference numeral 32 denotes a power on / off switch (AC switch) provided in each of the power supply units (PS) 31.
Here, it is configured using a toggle switch called a waveform switch, and is turned on / off each time the unit is replaced. When the AC switch (SW) 32 is pressed to operate the ON (ON) side operation unit (ON side abdomen of the operation button) to switch on, the OFF (OFF) side operation unit (OFF side of the operation button) The abdomen protrudes from the panel surface of the unit housing, and is mounted such that the off-side operation unit is flush with the panel surface of the housing when the switch is turned off by pressing the off-side operation unit.

Reference numeral 33 denotes a slide plate which is a constituent element of a locking mechanism provided in each of the power supply units (PS) 31. The operation panel (OFF) side of the AC switch (SW) 32 is pivoted around a fulcrum 34. It is provided so as to be rotatable between a position indicated by a solid line and a position indicated by an alternate long and short dash line across the off-side abdomen of the operation button. Reference numeral 35 denotes a stopper provided inside the unit housing for restricting the rotation position of the slide plate 33,
When the power supply unit (PS) 31 is mounted on the PC server (PDV) housing 30, a slide plate 33 provided in the unit is supported at a position indicated by a solid line in FIG. The power supply unit (PS) 31 is prevented from being taken out of the PC server (PDV) housing 30 by engaging with the body.

In the above configuration, the AC switch (SW)
When the switch 32 is in the switch-on position, the off-side operation portion (off-side abdomen of the operation button) of the switch protrudes from the panel surface of the housing to close the slide passage of the slide plate 33, and the slide plate 33 is moved to the position shown in FIG. A part of the slide plate 33 is located inside the PC server (PDV) housing 30 because it cannot be slid to the slide upper end shown by the dashed line.

Accordingly, the AC switch (SW) 32 is turned off so that the off-side operation portion of the switch (off-side abdomen of the operation button) is flush with the panel surface of the unit housing. Unless 33 can be slid to the upper end of the slide indicated by the chain line in FIG.
The engagement between the slide plate 33 and the PC server (PDV) housing 30 cannot be released.

Thus, in the PC server (PDV) 30, when the power supply unit (PS) 31 is to be replaced, the power supply unit (PS) 31 must be turned off unless the AC switch (SW) 32 is turned off. PS) 31 to PC
It cannot be removed from the server (PDV) housing 30.

Also, when the power supply unit (PS) 31 is housed (attached) in the PC server (PDV) housing 30, the AC switch (SW) 32 is turned off, and the switch is turned off. Unless the slide plate 33 is slid to the upper end of the slide as shown by a dashed line in FIG. 2, the portion (off side abdomen of the operation button) is flush with the panel surface of the unit housing. 33 is engaged with the PC server (PDV) housing 30 to connect the power supply unit (PS) 31 to the PC server (PDV).
It cannot be stored in the housing 30.

As a result, even when the power supply unit (PS) 31 is to be mounted on the PC server (PDV) casing 30, unless the AC switch (SW) 32 is turned off, the power supply unit (PS) 31 is not required. ) 31 cannot be stored in the PC server (PDV) housing 30.

The locking mechanism using the slide plate 33 that rotates about the fulcrum 34 as described above is connected to each power supply unit (P
S) 31 and 31 can also reliably prevent various inconveniences in system operation due to an operation error of the AC switch (SW) 32 at the time of failure replacement of the power supply unit or the like.

In the embodiment shown in FIG. 7 described above, a locking mechanism using a rotating slide plate whose operation is restricted when the power switch is in the switch-on position is taken as an example. A locking mechanism using a rotating slide plate whose operation is restricted when the plug is inserted can be similarly implemented.

In each of the embodiments described above, the PC server has been described in which the power supply unit can be replaced while the power supply unit is in operation. However, the present invention is not limited to the PC server. It is easily applicable to: Further, the configuration of the locking mechanism provided in the power supply unit is not limited to the illustrated one, but may be another structure in which the operation is interfered by the state of the AC switch or the power input inlet.

[0065]

As described above in detail, according to the present invention, in a power supply unit having an exchange function during operation of a power supply unit applied to a computer system, when the power switch is not turned off, the power supply unit is not operated. By providing a locking mechanism in which the power supply unit cannot be replaced in each power supply unit, it is possible to reliably prevent various inconveniences in system operation due to an operation error of the power switch when the power supply unit is replaced with a failure.

Further, according to the present invention, in a power supply unit having a function of replacing a power supply unit during operation applied to a computer system, if the power supply plug is not pulled out from the inlet of the power supply unit, the power supply unit is not replaced. By providing the power supply unit with a locking mechanism that cannot replace the unit, it is possible to reliably prevent various inconveniences in the system operation due to an operation error at the time of failure replacement of the power supply unit.

Further, according to the present invention, in a computer system such as a PC server in which a housing is provided with a plurality of power supply unit mounting mechanisms constituting a redundant power supply and the power supply unit can be replaced during operation, Unless the power switch provided on the unit is turned off, the power supply unit cannot be replaced unless a locking mechanism is installed on each power supply unit. The above various inconveniences can be reliably prevented.

According to the present invention, in a computer system such as a PC server or the like in which a housing is provided with a plurality of power supply unit mounting mechanisms constituting a redundant power supply and a power supply unit can be replaced during operation. The power supply unit has a locking mechanism that does not allow the power supply unit to be replaced unless the power plug is pulled out from the inlet of the unit. The above various inconveniences can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a rear view of a PC server according to a first embodiment of the present invention.

FIG. 2 is a front view showing a configuration of a main part in the first embodiment.

FIG. 3 is a side view showing a configuration of a main part in the first embodiment.

FIG. 4 is a rear view of a PC server according to a second embodiment of the present invention.

FIG. 5 is a front view showing a configuration of a main part in the second embodiment.

FIG. 6 is a side view showing a configuration of a main part in the second embodiment.

FIG. 7 is a front view showing a configuration of a main part in the third embodiment.

FIG. 8 is a rear view of a conventional PC server.

FIG. 9 is a block diagram showing a redundant power supply configuration of the PC server.

[Explanation of symbols]

 Reference Signs List 10: PC server (PDV), 11: Power supply unit (PS), 12: Power on / off switch (AC switch), 13: Locking mechanism (LM), 13a: Slide plate, 13b: Slide plate support fixing screw 13c: slide guide hole, 14: slide guide, 20: PC server (PDV) housing, 21: power supply unit (PS), 22: AC power input inlet, 23a: slide plate, 23b: slide plate support fixed Screws, 23c: slide guide hole, 24: slide guide, 25: power plug, 30: housing of PC server (PDV), 31: power supply unit (PS), 32: power on / off switch (AC switch) , 33: slide plate, 34: fulcrum, 35: stopper.

Claims (14)

[Claims] 1. A power supply device in which a plurality of power supply units can be mounted on a housing and the power supply units can be replaced without interrupting system operation. The power supply device is provided with a locking mechanism for restricting operation when the switch is in a switch-on position, and releasing the restriction when the switch is in a switch-off position so that the unit can be removed from a housing. 2. A power supply device in which a plurality of power supply units can be mounted on a housing and the power supply units can be replaced without interrupting system operation. Operation is regulated when a power plug is inserted into the input inlet, and when the power plug is unplugged, the regulation is released and a locking mechanism is provided that allows the unit to be removed from the housing. And power supply. 3. The power supply device according to claim 1, wherein the locking mechanism is configured using a slide plate movable in a linear direction or a slide plate rotating around a fulcrum. 4. A power switch using a toggle switch,
When the switch is turned on by operating the on-side operation unit of the switch, the off-side operation unit protrudes from the panel surface of the housing, and the off-side operation unit blocks the slide passage of the slide plate, and operates the off-side operation unit. 2. When the switch is turned off, the off-side operation unit is flush with or immersed in the panel surface of the housing, and the slide passage of the slide plate is released.
Or the power supply device according to 3. 5. The power supply device according to claim 2, wherein the plug closes the slide passage of the slide plate when the plug is inserted into the inlet, and releases the slide passage of the slide plate when the plug is removed from the inlet. 6. A locking mechanism comprising: a slide plate having an upper and lower passage end at a position partially covering an off-side operation portion of a power switch and a position protruding a predetermined amount from a lower end of a unit housing; The power supply device according to claim 1, comprising a slide plate support fixing screw that is supported and fixed at an arbitrary position, and a slide guide hole into which the slide plate support fixing screw is fitted. 7. A sliding plate having a vertical passage end at a position covering a part of an AC power input inlet and a position projecting from a lower end of a unit housing, and a locking mechanism for slidably supporting the sliding plate. 3. The power supply device according to claim 2, further comprising a slide plate support fixing screw fixed at an arbitrary position, and a slide guide hole into which the slide plate support fixing screw is fitted. 8. A computer system in which a housing is provided with a plurality of power supply unit mounting mechanisms constituting a redundant power supply and enables replacement during operation of the power supply unit. An AC switch for controlling the supply of external AC power to a power supply circuit inside the unit; a slide amount is regulated when the AC switch is in a switch-on position; and a slide amount is released when the AC switch is in a switch-off position. When the power supply unit is regulated, the power supply unit is fixed at a fixed position in the housing of the computer system, and when the restriction on the slide amount is released, the power supply unit can be removed from the housing of the computer system. A computer system, comprising: 9. A computer system in which a housing is provided with a plurality of power supply unit mounting mechanisms constituting a redundant power supply to enable replacement during operation of the power supply unit. An AC inlet for receiving AC power supplied from the outside via an AC cable and an AC plug; and a slide amount when the AC plug is inserted into the AC inlet, and a slide when the AC plug is not inserted. When the regulation of the amount is released and the slide amount is regulated, the power supply unit is fixed at a fixed position in the housing of the computer system, and when the regulation of the slide amount is released, the power supply unit is removed from the casing of the computer system. A computer system comprising a slide plate capable of being removed. 10. A toggle switch is used as an AC switch, and when the switch is turned on by operating an on-side operation unit of the switch, the off-side operation unit protrudes from the panel surface of the housing and the off-side operation unit slides. When the slide passage of the plate is closed and the switch-off state is operated by operating the off-side operation unit, the off-side operation unit is flush with or immersed in the panel surface of the housing to release the slide passage of the slide plate. Item 10. The computer system according to Item 8. 11. The slide plate according to claim 9, wherein the AC plug closes the slide passage of the slide plate when the AC plug is inserted into the AC inlet, and releases the slide passage of the slide plate when the AC plug is removed from the AC inlet. Computer system. 12. The computer system according to claim 8, wherein a slide plate that rotates about a fulcrum is used. 13. The slide plate has a slide guide hole into which a slide plate support fixing screw for slidably supporting the slide plate and fixing the slide plate at an arbitrary position is fitted. 9. The computer system according to claim 8, wherein the part that partially covers and the position that protrudes from the lower end of the unit housing by a predetermined amount are upper and lower passage ends. 14. A slide plate having a slide guide hole into which a slide plate support fixing screw for slidably supporting the slide plate and fixing the slide plate at an arbitrary position is fitted.
10. The computer system according to claim 9, wherein a position covering a part of the inlet and a position projecting a predetermined amount from a lower end of the unit housing are defined as upper and lower passage ends.