JP4805196B2 - Inlet - Google Patents

Description

  The present invention relates to an inlet mounted on a power supply unit, and more particularly to an inlet that enables safe maintenance and inspection work of a power supply unit.

Once the various communication devices that support the modern IT infrastructure are in operation, they must continue to operate for 24 hours with the power on.
For this reason, as shown in FIG. 8, the communication device 1 often includes a plurality of power supply units 3 that can be removed in preparation for failure and maintenance, and thus includes a plurality of power supply units 3. During the operation of one power supply unit 3, the other power supply unit 3 can be maintained and inspected.

Depending on the supplied power, there is a type in which the inlet 5 is directly attached to the power supply unit 3 and the plug 9 of the power cable 7 is connected to the inlet 5 as shown in FIG. ing.
However, this structure allows the power supply unit 3 to be pulled out from the apparatus main body 1a while the power supply cable 7 is connected (powered), so that when the power supply unit 3 is maintained and inspected, When the power supply unit 3 is pulled out from the apparatus main body 1a while the power cable 7 is connected to the unit 3 (while power is supplied), the component terminals exposed on the back side of the power supply unit 3 interfere with the apparatus main body 1a and are short-circuited. There is a risk of it.

Therefore, it is necessary to stop the power supply to the power supply unit 3 that is pulled out from the apparatus main body 1a for the maintenance and inspection of the safe power supply unit 3. For this reason, the power cable 7 is pulled out from the power supply unit 3 before the work is performed. It is necessary to keep in mind, but the actual situation is that no measures have been taken for this type of problem.
Patent Documents 1 and 2 disclose an outlet, a plug, a plug fixing body, and the like that prevent the plug of a power cable connected to an electric / electronic device or the like.
JP 2003-142202 A JP 2005-347079 A

Thus, according to the conventional examples disclosed in Patent Documents 1 and 2, it is possible to prevent inadvertent removal of the plug during operation of the apparatus and prevent damage to internal devices. The example is only for preventing the power cable (plug) from being disconnected while the apparatus is in operation.
For this reason, even when using these conventional examples, it is possible to solve the problem of pulling out the power supply unit from the main unit while the power supply cable is connected to the power supply unit when performing maintenance and inspection work on the power supply unit. There wasn't.

  The present invention has been devised in view of such circumstances, and an object of the present invention is to provide an inlet in which the power supply unit cannot be removed from the apparatus main body with the power supply cable connected to the power supply unit.

In order to achieve such an object, the invention according to claim 1 is attached to a power supply unit which can be removed from a power supply slot provided in an apparatus main body such as an electric / electronic device, and a plug of a power supply cable is connected in the casing. In the inlet, there is provided a plug in which an opening is provided in the casing of the inlet , and one piece abuts the periphery of the opening and is held flush with the casing, and the other piece is connected to the periphery of the opening. A lock plate having an L-shaped cross section that protrudes inwardly of the casing so as to be able to come into contact is pivotally mounted. The lock plate protrudes outward from the casing by the connection of the plug, and the main body of the power supply slot periphery. It is characterized in that it is hooked on the inner periphery .

The invention according to claim 2 is characterized in that, in the inlet according to claim 1 , an elastic member is attached to the plug contact side of the other piece of the lock plate .
The invention according to claim 3 is characterized in that, in the inlet according to claim 1 , an elastic piece is projected on the plug contact side of the other piece of the lock plate, and according to claim 4, The invention is characterized in that, in the inlet according to claim 3 , the elastic piece is formed by cutting the other piece of the lock plate and raising it .

On the other hand, the invention according to claim 5 is attached to a power supply unit that is detachable from a power supply slot provided in an apparatus main body such as an electric / electronic device, and the power cable plug is connected to the casing. A notch is formed in the inlet casing to form a bendable lock plate at the base thereof, and a bendable lock plate is formed, and a projecting piece with which a plug to be connected abuts on the back side of the lock plate projects inwardly. was set, the lock plate is bent outwardly of the casing at the connection of the plug, characterized Rukoto to abolish wound around the inner circumference of the main body of the power supply slot periphery.

According to a sixth aspect of the present invention, in the inlet of the fifth aspect , an elastic member is attached to the plug contact side of the protruding piece of the lock plate.
The invention according to claim 7, At a inlet according to claim 5, the plug contact side of protrusion of the lock plate, characterized in that is protruded elastic piece, according to claim 8 invention at a inlet according to claim 7, wherein the elastic piece is you characterized in that it is formed integrally with said projecting piece by notched the protrusion of the lock plate.

According to the invention according to each claim, it is possible to prevent an accident by forgetting to remove the power cable by an operator's carelessness, and even if the power supply unit and the device main body (power supply slot) interfere with each other at the time of removal, a short circuit occurs. This enables safe maintenance and inspection work of the power supply unit.
And according to the invention concerning Claim 2 thru | or Claim 4 and Claim 6 thru | or Claim 8 , it has an advantage which can absorb the difference in the thickness of an apparatus main body.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 4 show an embodiment of the invention according to claim 1 , in which 11 includes a plurality of power supply units 13 that can be removed in preparation for failure and maintenance, like the communication device 1 of FIG. In the communication device, the power supply unit 13 includes a printed circuit board 15 on which many components are mounted, and an inlet 17 attached to the printed circuit board 15. In the figure, only one power supply unit 13 is shown.

  Each of the power supply units 13 is detachably mounted in the apparatus main body 11a from the power supply slot 19, but as described above, the plug 23 of the power cable 21 remains connected to the inlet 17 (power is supplied). If the power supply unit 13 is pulled out from the apparatus main body 11a, the component terminals exposed on the back side of the power supply unit 13 may interfere with the apparatus main body 11a (power supply slot 19) and short-circuit.

  Therefore, in the present embodiment, a lock plate (lock means) 25 is assembled to the inlet 17 to solve the above problems. As shown in FIGS. 1 to 4, the lock plate 25 is formed in an L-shaped cross section, The corner is pivotally attached by a split pin 31 or the like to the peripheral edge of a rectangular opening 29 provided in the casing 27 of the inlet 17 so that the corner becomes the rotation center of the lock plate 25. Yes.

As shown in FIG. 2, the inlet 17 has the same external shape as the conventional inlet, and is different in configuration only in that the lock plate 25 is pivotally attached to the opening 29.
As described above, the lock plate 25 is formed in an L-shaped cross section, and the inclined surface 35 provided at the tip of the one piece 33 abuts on the inclined surface 37 provided at the peripheral portion on the opening 29 side, The one piece 33 is flush with the casing 27 so as to close the opening 29. As shown in FIGS. 1 and 2, the other piece 39 of the lock plate 25 protrudes inward of the casing 27 in this state.

  When the plug 23 of the power cable 21 is inserted into the inlet 17 as shown in FIG. 3, the split pin 31 is rotated while the plug 23 abuts against and presses the other piece 39 of the lock plate 25. The lock plate 25 is rotated in the center in the direction of the arrow. When the plug 23 is completely inserted into the inlet 17 as shown in FIG. 4, the other piece 39 of the lock plate 25 comes into contact with the outer periphery of the plug 23, so that one piece 33 of the lock plate 25 is located at the periphery of the power supply slot 19. It is designed to be hooked on the inner periphery of the.

Therefore, the lock plate 25 locks the power supply unit 13 even if the power supply unit 13 is pulled out of the power supply slot 19 (device main body 11a) with the plug 23 (power supply cable 21) inserted into the inlet 17 as shown in FIG. And cannot be pulled out.
In addition, in FIG. 1, reference numeral 41 denotes a front plate of the power supply unit 13.
Since this embodiment is configured as described above, when each power supply unit 13 is mounted in the apparatus main body 11a, the inclined surface 35 of the one piece 33 of the lock plate 25 is replaced with the inclined surface 37 on the opening 29 side as shown in FIG. The one piece 33 may be flush with the casing 27.

  Then, after being installed in the apparatus main body 11a, the plug 23 of the power cable 21 may be connected to the inlet 17 of each power supply unit 13 to turn on the power, and when the plug 23 is inserted into the inlet 17 as shown in FIG. While the plug 23 abuts against and presses the other piece 39 of the lock plate 25, the lock plate 25 is rotated in the direction of the arrow about the split pin 31 as a rotation center. When the plug 23 is completely inserted into the inlet 17 as shown in FIG. 4, the other piece 39 of the lock plate 25 comes into contact with the outer periphery of the plug 23, so that one piece 33 of the lock plate 25 is located at the periphery of the power supply slot 19. It will be hooked on the inner periphery of the.

  For this reason, when performing maintenance or inspection work of any power supply unit 13 for long-term use, the operator inadvertently forgot to remove the power cable 21 and the power cable 7 was connected to the power supply unit 13. Even if it is attempted to pull it out from the apparatus main body 11a while being supplied with power, the lock plate 25 cannot lock and pull out the power supply unit 13, and the operator notices that he has forgotten to remove the power cable 21.

When the operator pulls out the power cable 21, the lock state between the lock plate 25 and the apparatus main body 11 a is released as shown in FIG. 1, and the power supply unit 13 whose power supply is stopped is pulled out from the power supply slot 19. Can be done.
As described above, the present embodiment is configured so that the power supply unit 13 cannot be pulled out from the apparatus main body 11a when the plug 23 of the power cable 21 is connected to the inlet 17 of the power supply unit 13. According to this, the operator will not forget to remove the power cable 21 due to carelessness, causing an accident, and even if the power supply unit 13 and the apparatus main body 11a (power supply slot 19) interfere with each other at the time of removal, a short circuit may occur. Therefore, safe maintenance and inspection work of the power supply unit 13 is possible.

FIG. 5 shows an embodiment of the invention according to claims 1 and 2 , and in this embodiment, in addition to the configuration of the embodiment of FIG. 1, the other piece of the lock plate 25 with which the plug 23 of the power cable 21 abuts. An elastic member 43 such as rubber is attached to the contact surface 39.
That is, for example, when the power supply unit 13 is attached to a communication device 11-1 having a thinner device body 11a-1 than the communication device 11, the plug 23 is inserted into the inlet 17, and the piece 33 of the lock plate 25 is Even when standing in the direction of the arrow as shown in FIG. 5, since the thickness of the device main body 11a-1 is thin, a gap is left between the device main body 11a-1 at the periphery of the power supply slot 19 and the one piece 33, and the device main body 11a-1 swings. There is a possibility that abnormal noise may be generated from the apparatus main body 11a-1 due to the collision with the piece 33 to be performed.

Therefore, as described above, in the present embodiment, the elastic member 43 is attached to the contact surface of the other piece 39 of the lock plate 25 with which the plug 23 contacts. According to this structure, the elastic member 43 is inserted into the inlet 17. While the plug 23 compresses the elastic member 43, one piece 33 of the lock plate 25 is brought into pressure contact with the inner periphery of the apparatus body 11a-1 at the periphery of the power supply slot 19 to prevent the generation of abnormal noise.
Therefore, according to the present embodiment, in addition to the same effects as the above-described embodiment, there is an advantage that the difference in thickness of the apparatus main body 11a-1 can be absorbed.

FIG. 6 shows an embodiment of the invention according to claims 1, 3, and 4. This embodiment replaces the elastic member 43, and the other piece 39 of the lock plate 25-1 on which the plug 23 abuts. The elastic piece 45 protrudes from the contact surface of -1, and the elastic piece 45 is formed by making a U-shaped cut in the other piece 39-1 and driving it toward the plug 23 side. ing.
In addition, you may attach the elastic piece separately formed with the leaf | plate spring etc. to the contact surface of the other piece 39-1 of the lock plate 25-1.

Since other configurations are the same as those of the embodiment of FIG. 1, the same components are denoted by the same reference numerals, and description thereof is omitted.
Thus, according to the present embodiment, while the plug 23 inserted into the inlet 17-1 presses the elastic piece 45, the piece 33 of the lock plate 25-1 is attached to the periphery of the device main body 11a-1 around the power supply slot 19. Press contact to the inner circumference.

Therefore, this embodiment also has the advantage that the maintenance and inspection work of the safe power supply unit 13 can be performed and the difference in the thickness of the apparatus main body 11a-1 can be absorbed as in the embodiment of FIG.
FIG. 7 shows an embodiment of the invention according to claim 5, and in this embodiment, in place of the lock plate 25 having an L-shaped cross section in FIG. A U-shaped notch 46 is inserted to form a lock plate (lock means) 47 so that it can be bent in the direction of the arrow. As shown in the figure, the lock plate 47 is formed with concave portions 49 for bending on the front and back of the base. At the same time, a projecting piece 51 with which the plug 23 abuts is provided inwardly on the back side.

  Then, when the plug 23 is inserted into the inlet 17-2 as shown in the drawing, the plug 23 abuts against and presses the protruding piece 51 of the lock plate 47, and the lock plate with the concave portion 49 as the center of rotation. 47 is rotated in the direction of the arrow. When the plug 23 is completely inserted into the inlet 17-2, the protruding piece 51 of the lock plate 47 comes into contact with the outer periphery of the plug 23 as in the embodiment of FIG. It is adapted to be hooked on the inner periphery of the apparatus main body 11a.

When the plug 23 is pulled out, the lock plate 47 returns to the same state as the casing 27-1 as shown by the solid line in FIG.
Since other configurations are the same as those of the embodiment of FIG. 1, the same components are denoted by the same reference numerals and description thereof is omitted.
Since the present embodiment is configured as described above, when the plug 23 is connected to the inlet 17-2 of each power supply unit 13 after the power supply unit 13 is mounted in the apparatus main body 11a, the plug 23 as shown in FIG. While abutting against and pressing the protruding piece 51 of the lock plate 47, the lock plate 47 is rotated in the direction of the arrow with the concave portion 49 as the rotation center. When the plug 23 is completely inserted into the inlet 17-2, the protrusion 51 of the lock plate 47 comes into contact with the outer periphery of the plug 23, and the lock plate 47 is hooked on the inner periphery of the apparatus main body 11a at the periphery of the power supply slot 19. Stop.

For this reason, when performing maintenance and inspection work of the power supply unit 13, the operator inadvertently forgets to remove the power cable 21, and the power supply unit 13 remains connected (powered) to the power supply unit 13. Even if it is attempted to pull 13 out of the apparatus main body 1a, the lock plate 47 cannot lock the power supply unit 13 and pull it out.
Therefore, the operator notices that he / she has forgotten to remove the power cable 21, and if the power cable 21 is pulled out, the lock state between the lock plate 47 and the apparatus main body 11a is released, and the power supply unit in which the power supply is stopped. 13 can be withdrawn from the power supply slot 19.

Therefore, according to the present embodiment, as in the above-described embodiments, safe maintenance and inspection work of the power supply unit 13 can be performed.
Although not shown, an elastic member 43 as shown in FIG. 5 may be adhered to the protruding piece 51 of the lock plate 47, or an elastic piece 45 as shown in FIG.
Thus, according to one embodiment of claims 5 and 6 and one embodiment of claims 5, 7, and 8, as in the embodiments of FIGS. 5 and 6, It is possible to achieve the purpose.

It is a principal part sectional drawing of a power supply unit provided with the inlet concerning one embodiment of Claim 1, and a communication apparatus. It is a whole perspective view of an inlet. It is a principal part sectional drawing of a power supply unit provided with the inlet concerning one embodiment of Claim 1, and a communication apparatus. It is a principal part sectional drawing of a power supply unit provided with the inlet concerning one embodiment of Claim 1, and a communication apparatus. It is principal part sectional drawing of a power supply unit provided with the inlet which concerns on one Embodiment of Claim 1 and Claim 2 , and a communication apparatus. FIG. 3 is a cross-sectional view of a main part of a power supply unit including an inlet according to an embodiment of claims 1, 3, and 4 and a communication device. It is a principal part sectional drawing of a power supply unit provided with the inlet concerning one embodiment of Claim 5, and a communication apparatus. It is a whole perspective view of the communication apparatus provided with the conventional power supply unit.

Explanation of symbols

11, 11-1 Communication device 11a, 11a-1 Device main body 13 Power supply unit 15 Printed circuit board 17, 17-1, 17-2 Inlet 19 Power supply slot 21 Power supply cable 23 Plug 25, 25-1, 47 Lock plate 27, 27 -1 casing 29 opening 31 split pin 33 one piece 35, 37 inclined surface 39 other piece 43 elastic member 45 elastic piece 46 notch 49 recess 51 protrusion

Claims (8)

At the inlet where the plug of the power cable is connected to the inside of the casing , attached to the power supply unit that can be removed from the power supply slot provided in the main body of the electrical / electronic device, etc.
An opening is provided in the casing of the inlet, and at the peripheral edge of the opening, one piece comes into contact with the peripheral edge of the opening and is held flush with the casing, so that a plug to which the other piece is connected can come into contact. A lock plate with an L-shaped cross section protruding inward
The inlet of the lock plate, wherein the one piece protrudes outward of the casing by the connection of the plug and is hooked to the inner periphery of the apparatus main body at the periphery of the power supply slot . The inlet according to claim 1, wherein an elastic member is attached to a plug contact side of the other piece of the lock plate . The inlet according to claim 1 , wherein an elastic piece protrudes from a plug contact side of the other piece of the lock plate. The inlet according to claim 3 , wherein the elastic piece is formed by cutting and raising the other piece of the lock plate . At the inlet where the plug of the power cable is connected to the inside of the casing, attached to the power supply unit that can be removed from the power supply slot provided in the main body of the electrical / electronic device, etc.
A slit is cut into the casing of the inlet to form a bendable concave portion at the base thereof to form a bendable lock plate, and a projecting piece with which a plug to be connected comes inward on the back side of the lock plate. Project
The inlet is characterized in that the lock plate is bent outwardly of the casing by the connection of the plug and is hooked on the inner periphery of the apparatus main body at the periphery of the power supply slot . The inlet according to claim 5 , wherein an elastic member is attached to a plug contact side of the protruding piece of the lock plate . The inlet according to claim 5 , wherein an elastic piece is protruded on a plug contact side of the protruding piece of the lock plate. The inlet according to claim 7 , wherein the elastic piece is formed integrally with the protruding piece of the lock plate by cutting .

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