JP5915587B2 - Equipment rack and electronic device - Google Patents

Description

  The present invention relates to a device rack on which a plurality of plug-in units are mounted, and an electronic device in which the plug-in units are mounted on the device rack.

  Conventionally, in an electronic device such as a communication device or a measurement device, a plug-in unit in which an electronic circuit is unitized so as to facilitate maintenance and inspection and to easily expand the function of the electronic device is referred to as a device rack (hereinafter referred to as “shelf”). And a mechanism for inserting / removing it into / from the slot portion inside.

  The shelf used in the electronic device is box-shaped, and a front surface is opened for inserting and removing the unit, and a plurality of slot portions for mounting the plug-in unit are provided inside the shelf.

  And the blank board which prevents the leakage of the cooling air from a cooling fan is attached to the opening part of the slot part in which the plug-in unit is not mounted.

  Furthermore, for example, when removing one plug-in unit from a plurality of plug-in units mounted inside the shelf for maintenance, a blank board is attached to the opening of the slot portion from which the plug-in unit has been removed. This prevents the cooling air from leaking. As an example, the blank disc has an engaging member that is detachably engaged with the opening of the slot portion, and a plate material having substantially the same size as the opening is used so as to close the opening (for example, , See Patent Document 1).

JP-A-2-278798

  However, the work of attaching the blank disk to the slot portion where the plug-in unit is not mounted takes time and there is a risk of forgetting to attach the blank disk.

  On the other hand, when the user adds a new plug-in unit, it takes time to remove the blank board to remove the blank board attached to the slot, and the removed blank board becomes an extra part. There is a risk that inventory management and delivery management become complicated.

  Furthermore, when the plug-in unit is removed, the blank disk removed when the plug-in unit is additionally installed may be lost in addition to attaching the blank disk to the slot portion again.

  The device rack and electronic device of the present disclosure eliminate the trouble of attaching the blank board to the slot portion where the plug-in unit is not mounted, and also eliminate the trouble of removing the blank board when, for example, adding a plug-in unit. The purpose is to provide the technology.

  An apparatus rack according to one aspect is provided with a plurality of slot portions for mounting a plug-in unit, and the slot is installed in the slot portion. When the plug-in unit is not mounted in the slot portion, the opening portion of the slot portion is closed, and the slot portion is closed. When the plug-in unit is inserted, a blank disk is pushed down inward of the slot part and protrudes forward of the slot part, and is installed in each slot part, and the blank disk is closed in the direction of closing the opening. An elastic mechanism for biasing, and a fixing member that is provided on a side wall of the blank disk and the slot portion and fixes the blank disk pressed inward of the slot portion.

  An electronic device according to another aspect is a box-type device rack having a plug-in unit having a pressing portion projecting from a rear surface of a rear portion, a front surface being opened, and a plurality of slot portions for mounting the plug-in unit therein. Attached to the slot portion, plugs the opening of the slot portion when the plug-in unit is not mounted in the slot portion, and inserts the plug-in unit into the slot portion so that the pressing portion A blank disk that is pushed down toward the front of the slot part, an elastic mechanism that is mounted inside each slot part and biases the blank disk in a direction to close the opening, the blank disk, and the And a fixing member provided on the side wall of the slot portion and fixing the blank disk pressed down by the pressing portion.

  According to the device rack and the electronic device of the present disclosure, there is no need to attach the blank board to the slot portion where the plug-in unit is not mounted, and, for example, the trouble of removing the blank board when adding the plug-in unit. Is gone.

It is a perspective view of one embodiment of an electronic device in which a plug-in unit is mounted on a device rack. FIG. 2 is a plan view of one slot portion in the shelf of the communication apparatus shown in FIG. 1. It is a front view of one slot part in the shelf of the communication apparatus shown in FIG. It is explanatory drawing explaining operation | movement of the blank disk which opens and closes the opening part of the slot part shown in FIG. It is explanatory drawing of the control member which controls the connection member of the elastic mechanism shown in FIG. 2, and the movement range of a connection member. It is explanatory drawing of the connection member of the elastic mechanism shown in FIG. 2, and the control member which controls the moving range of a blank board. FIG. 5 is a side view of a blank disk and an elastic mechanism for closing the opening of the slot portion described in FIG. 2 and FIG. 4. FIG. 8 is a side view of the blank board, the elastic mechanism, and the unit when the plug-in unit is inserted into the slot portion of FIG. 7. It is a side view of the front-end | tip of the unit shown in FIG. It is A arrow directional view of FIG. It is a side view of the front-end | tip of the blank disk shown in FIG. It is a side view of a blank board, an elastic mechanism, and a plug-in unit in the middle of insertion of the plug-in unit into a slot part. It is a side view of the front end side of the blank disk shown in FIG. It is a side view of a blank board, an elastic mechanism, and a plug-in unit which show the state of insertion completion of the plug-in unit into a slot part.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 is a perspective view of an embodiment of an electronic device in which a plug-in unit is mounted on a device rack. In FIG. 1, a communication device 3 is shown as an example of an electronic device. In FIG. 1, reference numeral 1 denotes a box-type device rack (hereinafter referred to as “shelf”) of the communication device 3. The front surface of the shelf 1 is open, and a plug-in unit (hereinafter referred to as “unit”) 5 is mounted horizontally. A plurality of slot portions 7 are provided vertically.

  At the left and right peripheral edges of the opening of the slot portion 7, a slit 9 that guides the unit 5 when the unit 5 is inserted into the slot portion 7 is provided horizontally inward of the slot portion 7. The printed circuit board 11 of the unit 5 to be described later is inserted. Further, guide rails 17 (FIG. 8) are provided on the same line as the slits 9 on the left and right side walls 13 and 15 (FIG. 2) inside the slot portion 7, and when the unit 5 is inserted into the slot portion 7, it will be described later. As shown in FIG. 14, the unit 5 is held by the left and right guide rails 17.

  The unit 5 includes a printed circuit board 11 on which a large number of electronic components are mounted, and a surface plate 19 provided at the front portion of the printed circuit board 11, and an optical cable (not shown) from the outside is connected to the surface plate 19. A plurality of modules 21 are mounted.

  Further, as shown in FIG. 1, an air inlet 23 is provided in the lower part of the front surface of the shelf 1, and a fan unit is mounted on the back side of the shelf 1. The cooling air taken into the shelf 1 from the air inlet 23 by the fan unit cools the electronic components of the unit 5 mounted in each slot portion 7, and then is exhausted to the outside from the fan unit. Yes.

  Each slot portion 7 is provided with a single plate-like blank board 25 regardless of whether or not the unit 5 is mounted. In the slot section 7 where the unit 5 is not mounted, the blank board 25 is a slot. The opening of the portion 7 is closed. In FIG. 1, for the sake of easy understanding, the illustration of a blank disk that closes the opening of the slot 7 located slightly above the center of the front surface of the shelf 1 is omitted.

  2 is a plan view of one slot portion 7 in the shelf 1 of the communication device 3 shown in FIG. 1, and FIG. 3 is a front view of one slot portion in the shelf 1 of the communication device 3 shown in FIG. FIG. 4 is an explanatory view for explaining the operation of the blank board 25 for opening and closing the opening 29 of the slot 7 shown in FIG.

  5 is an explanatory view of the connecting member of the elastic mechanism 27 shown in FIG. 2 and a mounting member for restricting the moving range of the connecting member. FIG. 6 is a connecting member of the elastic mechanism 27 shown in FIG. It is explanatory drawing of the attachment member which controls the movement range of 25.

  As shown in FIGS. 1 to 3, the blank disk 25 is a rectangular resin plate having a size slightly larger than the opening 29 of the slot portion 7, for example. The left and right side walls 13 and 15 in the slot portion 7 are attached.

  The elastic mechanism 27 includes an attachment member 31 provided on the side walls 13 and 15 with the same axial center, an attachment member 33 provided on the left and right back surfaces of the blank board 25 with the same axial center, and an attachment member. A pair of connecting members 35 connected between 31 and 33 and a torsion spring 37 wound around the connecting member 35 are provided. The torsion spring 37 is an example of an elastic member.

  As shown in FIG. 2, the left and right connecting members 35 are, for example, rods having a circular cross section in which an upper end 35 a and a lower end 35 b are bent in an L shape in opposite directions as an example, and the lower end 35 b has side walls 13, 15. It is bent in the direction and is rotatably inserted into the attachment member 31 fixed to the side walls 13 and 15.

  As shown in FIGS. 2 and 5, the attachment member 31 is formed in, for example, a cylindrical shape into which the lower end 35 b of the connecting member 35 can be inserted, and a notch 39 is formed in a peripheral wall on one end side where the lower end 35 b of the connecting member 35 is inserted. Is provided over the circumferential direction of the mounting member 31. The notch 39 is an example of a restriction unit.

  The notch 39 regulates the rotation range of the connecting member 35, and the notch 39 causes the connecting member 35 to move from the position where it projects horizontally to the front of the shelf 1 around the mounting member 31 as shown by the broken line in FIG. 4. As shown by the solid line, it can be rotated upward over a range of 45 degrees. The range of 45 degrees is an example.

  Further, as shown in FIG. 2, a torsion spring 37 is wound around the outer periphery of the lower end 35b. The member 35 is in pressure contact. Due to the spring force of the torsion spring 37, the connecting member 35 is urged in the direction of arrow A around the mounting member 31 as shown in FIG. 4, and the connecting member 35 urged in the direction of arrow A is Rotation in the direction is restricted.

  On the other hand, as shown in FIG. 2, the upper end 35 a of the connecting member 35 is rotatably inserted into the attachment member 33 that is attached to the back surface of the blank board 25. The attachment member 33 is formed in, for example, a cylindrical shape into which the upper end 35a of the connecting member 35 can be inserted, and is attached to the left and right back surfaces slightly below the center in the vertical direction of the blank board 25 as shown in FIG. .

  2 and 6, a notch 41 for restricting the rotation range of the blank disc 25 is provided in the circumferential direction of the mounting member 33 on the peripheral wall on one end side of the mounting member 33 into which the upper end 35a is inserted. It has been. The notch 41 is an example of a restriction unit. With this cutout 41, the blank disk 25 extends over a range of 90 degrees, for example, upward as shown by a solid line from a position horizontally protruding forward of the shelf 1 with the mounting member 33 as a rotation center as shown by a broken line in FIG. Can be rotated.

  Further, as shown in FIG. 2, a torsion spring 38 is wound around the outer periphery of the upper end 35a. One end side of the torsion spring 38 is in pressure contact with the end surface of the notch 41, and the other end side of the torsion spring 38 is upper end 35a. It is in pressure contact with the nearby connecting member 35. With the spring force of the torsion spring 38, the blank disc 25 is urged in the direction of arrow B around the mounting member 33 as shown in FIG. 4, and the blank disc 25 urged in the direction of arrow B is Rotation in the direction is restricted.

  With such a structure of the elastic mechanism 27, in the slot portion 7 where the unit 5 is not mounted, the connecting member 35 is urged in the direction of arrow A by the spring force of the torsion spring 37 as shown in FIG. The blank disc 25 is biased in the direction of arrow B by the spring force of the torsion spring 38, and the blank disc 25 closes the opening 29.

  Then, when the unit 5 is inserted into the slot portion 7 in which the opening 29 is closed by the blank disk 25 as described above, the blank disk 25 and the connecting member 35 are pushed down as described below, and the opening 29 Is now open.

  7 is a side view of the blank disk 25 and the elastic mechanism 27 for closing the opening 29 of the slot 7 described in FIGS. 2 and 4, and FIG. 8 is a blank when the unit 5 is inserted into the slot 7 of FIG. Side views of the panel 25, the elastic mechanism 27, and the unit 5 are shown.

  9 is a side view of the front end of the unit 5 shown in FIG. 8, FIG. 10 is a side view of the unit 5 shown in FIG. 9, FIG. 11 is a side view of the front end of the blank board 25 shown in FIG. It is a side view of the blank board 25, the elastic mechanism 27, and the unit 5 in the middle of the insertion of the unit 5 in the. Further, FIG. 13 is a side view of the front end side of the blank disc 25 shown in FIG. 7, and FIG. 14 is a side view of the blank disc 25, the elastic mechanism 27, and the unit 5 showing a state of completion of insertion of the unit 5 into the slot portion 7. Show.

  As shown in FIG. 7, in the slot portion 7 where the unit 5 is not mounted, the blank disk 25 closes the opening 29 as shown in FIGS. 2 and 3. Then, when the unit 5 is inserted into the slot portion 7 as shown in FIG. 8, first, the unit 5 is located above the attachment member 33, that is, the blank plate 25 above the connection portion between the blank plate 25 and the connection member 35. The surface is pressed.

  On the other hand, as shown in FIGS. 8 to 10, one pressing portion 45 having a trapezoidal shape as viewed from the side is provided on the back side of the front end of the printed circuit board 11. Note that the shape of the pressing portion 45 is not limited to the trapezoidal shape, and the pressing portion may have a semicircular cross section, for example.

  The pressing part 45 rotates the connecting member 35 in the direction of arrow C against the spring force of the torsion springs 37 and 38 (FIG. 2) as shown in FIG. 25 has a function of rotating the connecting member 35 and the blank disk 25 in the same direction by rotating the shaft 25 in the arrow D direction. For this reason, the pressing portion 45 has an inclined surface 43 that comes into contact with the surface of the blank disk 25 that is pushed inward of the slot portion 7.

  As shown in FIGS. 2, 8, and 11, a C-shaped locking piece 47 is protruded from the back surface of the blank disk 25 on the side of the side walls 13 and 15, as viewed from the side surface. As shown in FIG. 2, columnar locking pins 49 project from the side walls 13 and 15. The locking piece 47 and the locking pin 49 are examples of fixing means.

  Then, as shown in FIG. 8, when the blank disk 25 pushed down in the direction of arrow D by the pressing portion 45 becomes horizontal as shown in FIG. 12, the locking piece 47 becomes the locking pin 49 as shown in FIGS. The blank board 25 is fixed to the side walls 13 and 15 by locking. Further, as described with reference to FIG. 8, the unit 5 presses the blank disc 25 above the mounting member 33 in the direction of arrow D, and accordingly, the connecting member 35 rotates in the direction of arrow C. Therefore, the blank disk 25 pushed inward of the slot portion 7 protrudes forward of the shelf 1 as shown in FIGS. 1 and 14 and is fixed to the side walls 13 and 15 by the locking pieces 47 and the locking pins 49. The

  Thereafter, as shown in FIG. 14, the unit 5 is held by the guide rail 17 and the unit 5 is mounted in the slot portion 7, and the attachment of the unit 5 to the slot portion 7 is completed.

  For example, when the operator removes the unit 5 mounted in the slot portion 7 for maintenance, the unit 5 is removed from the slot portion 7 and then the front of the shelf 1 (FIG. 1) as shown in FIG. What is necessary is just to push down the blank board 25 which protrudes to the arrow E direction. Then, the locked state of the locking piece 47 and the locking pin 49 is released. As a result, as shown in FIG. 4, the connecting member 35 rotates in the direction of arrow A by the restoring force of the torsion spring 37 (FIG. 2), and the blank disk 25 rotates in the direction of arrow B by the restoring force of the torsion spring 38 (FIG. 2). Thus, the opening 29 of the slot portion 7 is closed by the blank board 25.

  The communication device 3 according to the present embodiment has such a structure. For example, when the units 5 are not mounted in all the slot portions 7, the spring force of the torsion spring 37 (FIG. 2) is used as shown in FIG. The connecting member 35 is urged in the direction of arrow A about the attachment member 31 as the center of rotation. At the same time, the blank disc 25 is urged in the direction of arrow B around the mounting member 33 by the spring force of the torsion spring 38 (FIG. 2), so that the opening 29 of each slot portion 7 is a blank of each slot portion 7. It is blocked by the board 25.

  Thereafter, the unit 5 is inserted into the slot portion 7 and the unit 5 is mounted on the shelf 1. When the unit 5 is inserted into the slot portion 7, the unit 5 is blanked above the mounting member 33 as shown in FIG. The surface of the board 25 is pressed. For this reason, as the unit 5 is inserted into the slot portion 7, the pressing portion 45 rotates the connecting member 35 in the direction of arrow C against the spring force of the torsion spring 37 (FIG. 2). The blank disk 25 is rotated in the direction of arrow D against the spring force of the torsion spring 38 (FIG. 2), and the connecting member 35 and the blank disk 25 are pushed down in the same direction.

  When the blank disk 25 is pushed down to the horizontal state as shown in FIG. 12 by the pressing portion 45, the locking piece 47 is locked to the locking pin 49 as shown in FIGS. Fixed to. At this time, as shown in FIG. 1, the blank disc 25 protrudes forward of the shelf 1 and is fixed to the side walls 13 and 15. Thereafter, as shown in FIG. 14, the unit 5 is held by the guide rail 17 and the unit 5 is mounted in the slot portion 7.

  Further, for example, for maintenance, after the operator pulls out the unit 5 from the slot portion 7, the blank board 25 protruding forward of the shelf 1 (FIG. 1) as shown in FIG. The locked state between the piece 47 and the locking pin 49 may be released. Then, as shown in FIG. 4, the connecting member 35 is rotated in the direction of arrow A by the spring force of the torsion spring 37 (FIG. 2), and the blank disk 25 is rotated in the direction of arrow B by the spring force of the torsion spring 38 (FIG. 2). The opening 29 of the slot 7 is closed by the blank board 25. Thereby, leakage of the cooling air of the cooling fan from the opening 29 of the slot portion 7 is suppressed.

  1 has a structure in which the blank disk 25 closes the opening 29 by the elastic mechanism 27 mounted in the slot 7 in the slot 7 where the unit 5 is not mounted. It is not necessary to attach a blank disk to the unmounted slot portion 7.

  Further, when the unit 5 is mounted in the slot portion 7, since the blank disc 25 is stored in the bottom portion of the slot portion 7 as shown in FIG. 14, when the unit 5 is newly added, etc. There is no need to remove. As a result, it is not necessary to remove the blank disk or to manage inventory and delivery of the removed blank disk.

  Furthermore, with the recent increase in functionality of communication devices, the density of electronic components on a printed circuit board has increased, and the unit 5 has become larger and its weight has increased.

  For this reason, in the case of a horizontal type in which a plurality of units are horizontally mounted in the slot portion of the shelf as in the communication device 3 of FIG. 1, the unit is heavy for the operator, and at the moment the unit is pulled out from the slot portion, Units may drop from height.

  However, if the unit pulled out in this way is lowered, there is a possibility that the unit contacts an external cable such as an optical cable connected to the lower unit, and the external cable is damaged.

  On the other hand, the communication device 3 in FIG. 1 is connected to the lower unit by the blank disc 25 because the blank disc 25 protrudes to the front of the shelf 1 when the unit 5 is removed from the slot portion 7. The outside line cable is protected.

  Further, even when the unit 5 is lowered by the weight of the unit 5 and the blank disk 25 is pushed down in the direction of arrow E as shown in FIG. 14, the blank disk 25 is interposed between the unit 5 and the external cable of the lower unit. Protect the cable.

  Therefore, according to the communication device 3 of FIG. 1, when the unit 5 is removed from the slot portion 7 for maintenance inspection or the like, the external cable of the lower unit is protected.

  Further, when the unit 5 is not mounted, the opening 29 of the slot 7 is closed by the blank board 25, and when the unit 5 comes into contact with the blank board 25, the blank board 25 falls in the direction of arrow D in FIG. Since 7 opens, the position of the slot portion 7 into which the unit 5 is inserted becomes clear.

  For this reason, for example, the unit 5 is not erroneously inserted between the upper and lower slot portions 7 while being inclined obliquely in the left-right direction, and the connector inside the slot portion 7 is not damaged.

  The above detailed description will clarify the features and advantages of the embodiments. This is intended to cover the features and advantages of the embodiments described above without departing from the spirit and scope of the claims. Any person having ordinary knowledge in the technical field should be able to easily come up with any improvements and changes. Accordingly, there is no intention to limit the scope of the inventive embodiments to those described above, and appropriate modifications and equivalents included in the scope disclosed in the embodiments can be used.

DESCRIPTION OF SYMBOLS 1 ... Shelf; 3 ... Communication apparatus; 5 ... Unit; 7 ... Slot part; 9 ... Slit; 11 ... Printed circuit board; Guide rail 17; 19 ... Surface plate; 21 ... Module; 23 ... Fan unit; 25 ... Blank disc; 27 ... Elastic mechanism; 29 ... Opening; ..Mounting member; 35 ... Connecting member; 37,38 ... Torsion spring; 39,41 ... Notch; 45 ... Pressing part; 47 ... Locking piece; 49 ... Stop pin

Claims (6)

A plurality of slot portions for mounting plug-in units;
The slot portion is installed in the slot portion, closes the opening of the slot portion when the plug-in unit is not mounted in the slot portion, and is pushed down inward of the slot portion when the plug-in unit is inserted into the slot portion. A blank board protruding forward,
An elastic mechanism mounted inside each of the slot portions and biasing the blank disc in a direction to close the opening;
A fixing member that is provided on a side wall of the blank disk and the slot part, and fixes the blank disk pressed inward of the slot part;
A device rack characterized by comprising: The device rack according to claim 1,
The elastic mechanism is
An attachment member fixed to the left and right side walls of the slot portion;
Mounting members fixed to the left and right back surfaces of the blank board,
The upper and lower ends are bent in an L shape, the upper end is rotatably inserted into the mounting member on the blank disk side, and the lower end is rotatably inserted into the mounting member on the side wall side. A pair of left and right connecting members rotatable in a direction;
An elastic member mounted on the side wall-side mounting member and biasing the connecting member toward the rear of the slot portion;
An elastic member that is attached to the mounting member on the blank disk side and biases the blank disk forward of the slot portion;
Provided on the side wall side and the blank disk side mounting member, and having a restricting portion for restricting the rotation range of the connection member and the blank disk,
When the plug-in unit is not mounted in the slot portion, the connecting member is rotated to the rear of the slot portion by the elastic force of the elastic member, and the blank disc is rotated to the front of the slot portion by the elastic force of the elastic member. The apparatus is characterized in that the blank disc closes the opening of the slot portion. The apparatus rack according to claim 2,
The restricting portion is a notch cut out at one end side of the attachment member on the side wall side and the blank disk side where the connecting member is inserted,
The coupling member, said rotatable within cutout range, the blank panel is apparatus rack which is a rotatable in the cutout range. A plug-in unit having a pressing portion projecting from the rear surface of the rear portion;
A box-shaped device rack provided with a plurality of slot portions for mounting plug-in units therein;
Installed in the slot portion, closes the opening of the slot portion when the plug-in unit is not mounted in the slot portion, and inward of the slot portion by the pressing portion as the plug-in unit is inserted into the slot portion. A blank disc that is pushed down and protrudes forward of the slot portion;
An elastic mechanism mounted inside each of the slot portions and biasing the blank disc in a direction to close the opening;
A fixing member that is provided on a side wall of the blank disk and the slot part and fixes the blank disk pressed down by the pressing part,
An electronic device comprising: The electronic device according to claim 4.
The elastic mechanism is
An attachment member fixed to the left and right side walls of the slot portion;
Mounting members fixed to the left and right back surfaces of the blank board,
The upper and lower ends are bent in an L shape, the upper end is rotatably inserted into the mounting member on the blank disk side, and the lower end is rotatably inserted into the mounting member on the side wall side. A pair of left and right connecting members rotatable in a direction;
An elastic member mounted on the side wall-side mounting member and biasing the connecting member toward the rear of the slot portion;
An elastic member that is attached to the mounting member on the blank disk side and biases the blank disk forward of the slot portion;
Provided on the side wall side and the blank disk side mounting member, and having a restricting portion for restricting the rotation range of the connection member and the blank disk
When the plug-in unit is not mounted in the slot portion, the connecting member is rotated to the rear of the slot portion by the elastic force of the elastic member, and the blank disc is rotated to the front of the slot portion by the elastic force of the elastic member. The electronic device is characterized in that the blank disc closes the opening of the slot portion. The electronic device according to claim 5.
The restricting portion is a notch that is notched in the circumferential direction on one side of the mounting member on the side wall side and the blank disk side where the connecting member is inserted,
The electronic device according to claim 1, wherein the connecting member is rotatable within the range of the notch, and the blank disk is rotatable within the range of the notch.

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