JP3085369B2 - Power supply unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a power supply device,
In particular, the present invention relates to a power supply unit structure in which a function capable of preventing erroneous operation during maintenance is added to a power supply capable of online repair.

[0002]

2. Description of the Related Art A power supply unit of the type capable of online repair usually operates in n + 1 parallel redundant operations. Even if one power supply unit fails, power supply to the system is continued from the remaining power supply units. Can be. Each power supply unit has a function to be replaced without stopping other power supply units, and in this case, it is important to clearly inform the operator of the failed power supply unit. With the conventional power supply unit, the operation / failure status is indicated by LED
And the function of collecting the log data and notifying the address to notify maintenance personnel of the failed power supply unit.

As described above, even if the failed power supply unit can be easily identified, the replacement operation itself has been performed according to the operator's judgment. For this reason, the power supply unit may be pulled out of the gauge in a live state due to an erroneous operation, which may cause inconvenience such as malfunction of the system or damage to the connector.

As described above, in the conventional display using LEDs or log data, since the replacement operation of the power supply unit itself depends on the judgment of the operator, erroneous operation cannot be completely prevented.

As one example of such a measure, Japanese Patent Laid-Open No.
There is one disclosed in JP-A-1333036. In this method, the power supply unit main body is fixed to the cage by a mechanism such as an electromagnet or a motor to prevent erroneous operation. Further, as disclosed in Japanese Patent Application Laid-Open No. 3-245481, a structure in which the pullout lever cannot be easily operated, or when the lever is operated during operation as disclosed in Japanese Patent Application Laid-Open No. 1-185711, an alarm is issued. Some have a sounding function.

[0006]

Problems to be Solved by the Invention
In the case of the function of sounding an alarm when the lever is operated during operation as in the invention described in Japanese Patent Publication No. 1 (1993), the function still depends on the judgment of the operator, and erroneous operation cannot be completely prevented. Further, there is a possibility of erroneous operation even when the pulling lever is not easily operated as in the invention described in JP-A-3-245481. Further, Japanese Patent Laid-Open No. 2-1
In the case of a structure in which the power supply unit main body is fixed by a mechanism such as an electromagnet or a motor as in the invention described in Japanese Patent No. 33036, there is a possibility that the fixing mechanism itself may be damaged if the power supply unit is forcibly pulled out.

Therefore, an object of the present invention is to provide a power supply unit capable of preventing erroneous removal.

[0008]

According to the first aspect of the present invention, a plug-in type power supply unit having a shape mounted on a cage can be housed in the power supply unit and can be operated only when necessary. A pull-out handle, a handle fixing mechanism for fixing the pull-out handle in a housed state,
And a voltage detection circuit for monitoring the output voltage abnormality of the power supply unit and providing an operation signal to the handle fixing mechanism when the output voltage abnormality occurs.

According to the second aspect of the present invention, the handle fixing mechanism has an operating rod for locking the pulling handle and a driving device for driving the operating rod. A power supply unit according to claim 1 is obtained.

According to the third aspect of the present invention, there is provided the power supply unit according to the second aspect, wherein the driving device is an electromagnet.

According to a fourth aspect of the present invention, there is provided the power supply unit according to the second aspect, wherein the driving device is a motor.

[0012]

Embodiments of the present invention will now be described with reference to the drawings. 1A and 1B show a power supply unit according to an embodiment of the present invention, in which FIG. 1A is a schematic diagram showing a state in which a pull-out handle is stored, and FIG. 1B is a schematic diagram showing a state in which the pull-out handle is pulled out.

The power supply unit 1 of the present embodiment is a power supply unit of a cage insertion type, and has a pull-out handle 2 for removing the main body 1a from the gauge 5. Once the pull-out handle 2 is fixed by a fixing mechanism 3 provided inside the power supply unit main body 1a, it is fixed at a position where it cannot be normally operated. The fixing mechanism 3 has an operating rod 3a for locking the pull-out handle 2, and a driving device (not shown) for driving the operating rod 3a. This drive device uses a signal from a voltage detection circuit 4 provided in the main body 1a to monitor the output voltage of the power supply unit 1, and when an abnormal state occurs during the operation of the power supply, the pull-out handle 2 is used. Unlock and release. By operating the opened extraction handle 2, the power supply unit 1 can be extracted from the cage 5. Note that an electromagnet, a motor, or the like is suitable as the driving device.

[0014]

As described above, according to the present invention, the replacement work can be performed only in a state where the power supply unit has failed and maintenance is necessary, the operator's judgment can be more simplified, and the apparatus can be operated during operation. It is possible to prevent a normal power supply unit from being accidentally removed.

[Brief description of the drawings]

FIG. 1 shows a power supply according to one embodiment of the present invention;
(A) is a schematic diagram of a state in which a pull-out handle is stored,
(B) is a schematic diagram of a state in which the pull-out handle is pulled out.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power supply unit 1a Power supply unit main body 2 Pull-out handle 3 Fixing mechanism 3a Operating rod 4 Voltage detection circuit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H02J 1/00-1/16 H05K 5/00-5/06

Claims (4)

(57) [Claims] 1. A plug-in type power supply unit having a shape mounted on a cage, a pull-out handle that can be stored in the power supply unit and can be operated only when necessary, and the pull-out handle is fixed in a stored state. A power supply unit comprising: a handle fixing mechanism that performs operation; and a voltage detection circuit that monitors an output voltage abnormality of the power supply unit and provides an operation signal to the handle fixing mechanism when an output voltage abnormality occurs. 2. The handle fixing mechanism according to claim 1, wherein the handle fixing mechanism has an operating rod for locking the pull-out handle, and a driving device for driving the operating rod.
Power supply unit as described. 3. The power supply unit according to claim 2, wherein the driving device is an electromagnet. 4. The power supply unit according to claim 2, wherein the driving device is a motor.