JP4687907B2 - Shelf device and motherboard supporting method - Google Patents

Description

  The present invention relates to a shelf device that is applied to an electronic device or an optical electronic device such as a relay device or a server device in a communication system or an information processing system, and that houses and supports a motherboard into which a plurality of plug-in units are removably inserted. .

  This type of shelf device has a frame body composed of lower and upper guide bases, left and right side panels, and a rear cover that is detachably mounted on the back surface of the frame body. The motherboard is screwed to the lower and upper guide bases.

  On the other hand, a motherboard that is a support target of the shelf device includes a plurality of connectors for removably inserting a plurality of plug-in units and a plurality of guide pin modules for guiding insertion of the plurality of plug-in units. ing.

  With the recent high-density mounting of motherboards and plug-in units, the number of connector pins connecting the motherboard and plug-in units is increasing. When the number of pins of the connector is large, the load for inserting and removing the plug-in unit on the motherboard is large. For example, the insertion / extraction load of the plug-in unit is about 980N.

  The conventional shelf apparatus has a plurality of reinforcing metal members for reinforcing the motherboard so that the motherboard can withstand the insertion / extraction load of the plug-in unit without warping. Some of the plurality of reinforcing metal fittings are screwed to the mother board alone. The rest of the plurality of reinforcing brackets are screwed together with the motherboard to the lower and upper guide bases of the shelf device.

  Referring to FIGS. 1 (a) and 1 (b), an example of a conventional shelf device of this type is for housing and supporting a mother board 300, and includes lower and upper guide bases 63B and 63T and left and right side panels 64L. And 64R, a rear cover 65 that is detachably mounted on the back surface of the frame, and reinforcing metal fittings 71B, 71T, 71M, and 72M.

  On the front surface of the mother board 300, 42 connectors 310 for removably inserting up to 21 plug-in units (not shown), guide the insertion of the plug-in units, and plug-in units. Twenty-one guide pin modules 320 for restricting the mother board to a fixed position are provided. Each guide pin module 320 is screwed by a screw screwed from the back surface of the mother board 300.

  Reinforcing metal fittings 71M and 72M are screwed to the mother board 300 with five screws so that the mother board 300 is sandwiched between them. Reinforcing metal fittings 71B and 71T are screwed to the lower and upper guide bases 63B and 63T of the shelf device together with the mother board 300 with five screws. The rear cover 65 is screwed to the lower and upper guide bases 63B and 63T by two screws (not shown).

  Non-Patent Document 1 discloses a shelf device that houses and supports a motherboard into which a plurality of plug-in units are removably inserted. In this shelf apparatus, instead of the mother board warp prevention metal fitting previously provided as a stand-alone part in the shelf apparatus, a part that performs the mother board warpage prevention function is formed integrally with the rear cover.

Japan Society for Invention and Innovation Technical Report No. 2004-503178

  The conventional shelf apparatus including the one shown in FIG. 1 has the following problems.

  In the conventional shelf device, a plurality of reinforcing metal fittings that can withstand the insertion / extraction load of the plug-in unit without warping the motherboard, attaching the reinforcing metal fittings to the motherboard, attaching the motherboard to the shelf device, and rear cover And a number of screws used for mounting to the shelf device. That is, the conventional shelf apparatus has a large number of parts and high cost.

  In addition, the conventional method of supporting the mother board by such a shelf device has the positioning man-hours of the reinforcing metal fitting, the mother board, and the rear cover in the attachment of the reinforcing metal fitting to the motherboard, the attachment of the motherboard to the shelf device, and the attachment of the rear cover to the shelf device, respectively There are many man-hours for screwing and the work is complicated.

  Furthermore, the conventional motherboard, which is the support target of the shelf device, uses a large number of screws for fixing a large number of guide pin modules. That is, the conventional motherboard has a large number of parts and high cost. Moreover, the conventional method for assembling the mother board has a large number of man-hours for screwing the guide pin module, and the work is complicated.

  Moreover, although the shelf apparatus disclosed in Non-Patent Document 1 can reduce the warp prevention metal fittings of the mother board, it is desired to further reduce the number of parts.

  Therefore, an object of the present invention is to provide a shelf device that can withstand the insertion / extraction load of the plug-in unit without warping the mother board, has a small number of components, and is low in cost.

  Another object of the present invention is to provide a shelf device that contributes to facilitating work in a method for supporting a mother board.

  Still another object of the present invention is to provide a method of supporting a mother board that can easily support the mother board.

  Another object of the present invention is to provide a shelf device that contributes to a reduction in the number of motherboard parts and a reduction in cost.

  Another object of the present invention is to provide a shelf apparatus that contributes to facilitating work in a mother board assembling method.

  According to the present invention, there is provided a shelf device for supporting a mother board into which a plurality of plug-in units are removably inserted, and a frame body including lower and upper guide bases and left and right side panels, and a rear surface of the frame body In the shelf apparatus having a rear cover that is detachably mounted on the left and right side panels, the left and right side panels respectively include first protrusions corresponding to the front surfaces of the left and right sides of the motherboard, and the rear cover includes the motherboard. And a guide pin corresponding to a hole formed on the back surface of the motherboard, and the motherboard is positioned in the front-rear direction by fixing the rear cover to the frame body. And the guide pin is positioned in the horizontal direction and the vertical direction within the frame. By being inserted into the hole of Bodo, shelf device is obtained, characterized in that it is supported with the rear cover is positioned in the horizontal direction and the vertical direction.

  The lower guide base includes a hole corresponding to a protrusion formed on a lower side of the motherboard, and the motherboard is inserted into the hole so that the motherboard is moved in the front-rear direction, the left-right direction, and the lower direction. It may be positioned and supported.

  Each of the left and right side panels includes second protrusions corresponding to the back surfaces of the left and right sides of the motherboard, and the motherboard is inserted between the first protrusions and the second protrusions. It may be positioned in the front-rear direction and supported.

  Each of the left and right side panels may include a plurality of second protrusions corresponding to the back surfaces of the left and right sides of the plurality of motherboards having different thicknesses.

  The left and right side panels are provided with elastic pieces protruding outward in respective rear side regions, and the rear cover is provided with left and right flanges corresponding to the outer sides of the rear side regions of the left and right side panels. Each of the left and right flange portions includes a cutout portion corresponding to the elastic piece, and the elastic cover is engaged with the cutout portion so that the rear cover is in the front-rear direction. It may be positioned and supported in the left-right direction and the up-down direction.

  The motherboard and the rear cover may be supported in the front-rear direction, the left-right direction, and the up-down direction by screwing the motherboard and the rear cover together with the frame by screws.

  The upper guide base includes a mounting surface corresponding to the front surface of the upper side of the motherboard, the rear cover includes another protrusion corresponding to the back surface of the upper side of the motherboard, and the rear cover includes The mother board may be positioned and supported in the front-rear direction by being fixed to the upper guide base.

  Moreover, according to this invention, the electronic device characterized by having the said shelf apparatus and the said motherboard which is an electronic circuit board is obtained.

  Further, according to the present invention, there is obtained an optical electronic apparatus comprising the shelf device and the mother board which is an electro-optical circuit board.

Further, according to the present invention, there is provided a motherboard supporting method for supporting a motherboard into which a plurality of plug-in units are removably inserted by a shelf device, wherein the shelf device includes lower and upper guide bases and left and right sides. In a motherboard supporting method having a frame body composed of a panel and a rear cover that is detachably mounted on the rear surface of the frame body, the left and right side panels respectively correspond to the front surfaces of the left and right sides of the motherboard. Forming the first projection, forming a protrusion on the rear cover corresponding to the back surface of the motherboard, and a guide pin corresponding to the hole formed on the back surface of the motherboard,
A step of positioning and supporting the motherboard in the front-rear direction by fixing the rear cover to the frame body, and a hole portion of the motherboard in which the guide pins are positioned in the left-right direction and the vertical direction in the frame body. By inserting the rear cover, a method for supporting the mother board is provided, which includes a step of positioning and supporting the rear cover in the left-right direction and the vertical direction.

  The shelf device according to the present invention can withstand the insertion / extraction load of the plug-in unit without warping the mother board, has a small number of parts, and is low in cost.

  In addition, the shelf device according to the present invention contributes to facilitating work in the method for supporting the mother board.

  Furthermore, the motherboard supporting method according to the present invention can easily support the motherboard.

  In addition, the shelf device according to the present invention contributes to a reduction in the number of motherboard parts and cost reduction.

  In addition, the shelf device according to the present invention contributes to facilitating work in the mother board assembly method.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[Embodiment 1]
2A and 2B, the shelf device according to the first embodiment of the present invention accommodates and supports a mother board 100 into which a plurality of plug-in units (not shown) are removably inserted. is there. The shelf apparatus includes a frame body composed of lower and upper guide bases 13B and 13T and left and right side panels 14L and 14R, and a rear cover 15 that is detachably mounted on the rear surface of the frame body.

  The motherboard 100 is positioned to some extent in the left-right direction by being positioned with a slight gap between the left and right side panels 14L and 14R.

  Referring to FIG. 3, the upper guide base 13 </ b> T includes a mounting surface 142 corresponding to the front surface of the upper side of the motherboard 100.

  On the other hand, the rear cover 15 includes a protrusion 152 corresponding to the back surface of the upper side of the mother board 100.

  By fixing the rear cover 15 to the upper guide base 13T, the mother board 100 is positioned and supported in the front-rear direction. 2B is an area where the ridges 152 are in contact with the back surface of the mother board 100. In FIG.

  Each of the left and right side panels 14L and 14R includes first protrusions 143 corresponding to the front surfaces of the left and right sides of the motherboard 100. On the other hand, the rear cover 15 includes a protrusion 153 corresponding to the back surface of the motherboard 100. By fixing the rear cover 15 to the frame body composed of the lower and upper guide bases 13B and 13T and the left and right side panels 14L and 14R, the mother board 100 is positioned and supported in the front-rear direction. Note that another hatched area in FIG. 2B is an area where the protrusion 153 is in contact with the back surface of the mother board 100.

  The first protrusions 143 of the left and right side panels 14L and 14R and the protrusions 152 and 153 of the rear cover 15 reinforce the motherboard 100 so that the motherboard 100 can withstand the insertion / extraction load of the plug-in unit without warping. It also makes. As a result, the mother board 100 can sufficiently withstand an insertion / extraction load of about 980 N of the plug-in unit, for example.

  Further, as shown in FIGS. 2A and 2B and FIG. 3, the mother board 100 and the rear cover 15 are screwed together with the upper guide base 13 </ b> T that is a part of the frame by screws 200. Thus, the mother board 100 and the rear cover 15 are positioned and supported in the front-rear direction, the left-right direction, and the up-down direction.

  Referring to FIG. 9 in addition to FIGS. 2A and 2B and FIG. 3, in this shelf device, the rear cover 15 includes guide pins 154 corresponding to the holes 103 formed on the back surface of the motherboard 100. ing.

  By inserting the guide pin 154 into the hole 103 of the mother board 100 positioned in the left-right direction and the up-down direction in the frame made up of the lower and upper guide bases 13B and 13T and the left and right side panels 14L and 14R, The rear cover 15 is also positioned and supported in the horizontal direction and the vertical direction.

  The guide pin 154 also has a function of guiding the insertion of the plug-in unit with respect to the connector 110 of the motherboard 100.

  Further, as shown in FIGS. 2A and 2B and FIG. 3, the mother board 100 and the rear cover 15 are screwed together with the upper guide base 13 </ b> T that is a part of the frame by screws 200. Thus, the mother board 100 and the rear cover 15 are positioned and supported in the front-rear direction, the left-right direction, and the up-down direction.

[Embodiment 2]
2 (a) and 2 (b) and FIGS. 4 (a) and 4 (b), in the shelf apparatus according to the second embodiment of the present invention, the lower guide base 13B is a protrusion 105 formed on the lower side of the motherboard 100. A hole 132 corresponding to the above is provided.

  By inserting the protrusion 105 of the motherboard 100 into the hole 132, the motherboard 100 is positioned and supported in the front-rear direction, the left-right direction, and the downward direction.

  Further, as shown in FIGS. 2A and 2B and FIG. 3, the mother board 100 and the rear cover 15 are screwed together with the upper guide base 13 </ b> T that is a part of the frame by screws 200. Thus, the mother board 100 and the rear cover 15 are positioned and supported in the front-rear direction, the left-right direction, and the up-down direction.

[Embodiment 3]
Referring to FIGS. 2 (a) and 2 (b), FIGS. 5 (a) and 5 (b), and FIGS. 6 (a) and 6 (b), in the shelf device according to Embodiment 3 of the present invention, the left and right side panels Each of 14L and 14R further includes a second protrusion 144a corresponding to the back surfaces of the left and right sides of the motherboard 100 (100a) in addition to the first protrusion 143 corresponding to the front surfaces of the left and right sides of the motherboard 100 (100a). ing.

  By inserting the mother board 100 (100a) between the first protrusion 143 and the second protrusion 144a, the mother board 100 (100a) is positioned in the front-rear direction and supported.

  Each of the left and right side panels 14L and 14R includes a plurality of second protrusions corresponding to the back surfaces of the left and right sides of the plurality of mother boards having various thicknesses. That is, with further reference to FIGS. 7 (a) and 7 (b) and FIGS. 8 (a) and 8 (b), the left and right side panels 14L and 14R are respectively the motherboard 100a (FIG. 5 (a) and (B) and second protrusions 144a corresponding to the left and right back surfaces of FIGS. 6 (a) and 6 (b), and the left and right back surfaces of the motherboard 100b (FIGS. 7 (a) and (b)) having a thickness Tb And a second protrusion 144c corresponding to the back surfaces of the left and right sides of the mother board 100c having a thickness Tc (FIGS. 8A and 8B).

  On the other hand, notches 106a are formed on the left and right sides of the motherboard 100a as shown in FIGS. 5 (a) and 5 (b) and FIGS. 6 (a) and 6 (b). As shown in FIGS. 7A and 7B, notches 106b are formed on the left and right sides of the mother board 100b. As shown in FIGS. 8A and 8B, notches 106c are formed on the left and right sides of the mother board 100c. Any of the notches 106a to 106c is designed to avoid all of the second protrusions 144a to 144c when the motherboard is inserted into the shelf device.

  With reference to FIGS. 5 (a) and 5 (b) and FIGS. 6 (a) and 6 (b), a motherboard 100a as an example will be described with reference to FIGS. 6 (a) and 6 (b). The front surfaces of the left and right pieces of the mother board 100a inserted along the arrow i1 in FIG. 5A from the rear of the frame composed of the lower and upper guide bases 13B and 13T and the left and right side panels 14L and 14R, As shown in FIG. 5A, the first protrusion 143 is positioned in the forward direction. Next, the back surfaces of the left and right pieces of the mother board 100a moved along the arrow i2 in FIG. 6A are positioned backward by the second protrusions 144a as shown in FIG. 6A. Thus, the mother board 100a having the thickness Ta is positioned and supported in the front-rear direction by the first protrusion 143 and the second protrusion 144a.

  Further, as shown in FIGS. 2A and 2B and FIG. 3, the mother board 100 (100a) and the rear cover 15 are screwed together with the upper guide base 13T, which is a part of the frame body, by screws 200. By being stopped, the mother board 100 (100a) and the rear cover 15 are positioned and supported in the front-rear direction, the left-right direction, and the up-down direction.

  Similarly to the mother board 100a, the mother board 100b having the thickness Tb inserted from the rear side of the shelf device and moved along the arrow i2 in FIG. 7A is the first as shown in FIG. 7A. The protrusion 143 and the second protrusion 144b are positioned and supported in the front-rear direction.

  Further, the mother board 100c having a thickness Tc that is inserted from the rear of the shelf device and moved along the arrow i2 in FIG. 8A has the first protrusion 143 and the first protrusion 143 as shown in FIG. 8A. The two protrusions 144c are positioned and supported in the front-rear direction.

  Further, as shown in FIGS. 2A and 2B and FIG. 3, the mother board 100 (100b, 100c) and the rear cover 15 are fastened to the upper guide base 13T which is a part of the frame body by screws 200. As a result, the mother board 100 (100b, 100c) and the rear cover 15 are positioned and supported in the front-rear direction, the left-right direction, and the up-down direction.

[Embodiment 4]
3 and 10, in the shelf apparatus according to the fourth embodiment of the present invention, the left and right side panels 14L and 14R are provided with elastic pieces 146 protruding outward in respective rear side regions.

  On the other hand, the rear cover 15 includes left and right flange portions corresponding to the rear regions of the left and right side panels 14L and 14R.

  Each of the left and right flange portions includes a notch 155 corresponding to the elastic piece 146.

  By engaging the elastic piece 146 with the notch 155, the rear cover 15 is positioned and supported in the front-rear direction, the left-right direction, and the up-down direction.

  Further, as shown in FIGS. 2A and 2B and FIG. 3, the mother board 100 and the rear cover 15 are screwed together with the upper guide base 13 </ b> T that is a part of the frame by screws 200. Thus, the mother board 100 and the rear cover 15 are positioned and supported in the front-rear direction, the left-right direction, and the up-down direction.

  However, when the elastic piece 146 is engaged with the notch 155, the rear cover 15 is fixed in the front-rear direction, the left-right direction, and the vertical direction, and the motherboard 100 is also fixed in the front-rear direction, the left-right direction, and the vertical direction. Therefore, the screw 200 may be omitted. Whether or not the screw 200 can be omitted depends on whether or not the engagement strength of the elastic piece 146 with respect to the notch 155 is larger than the insertion / extraction load of about 980 N of the plug-in unit applied to the mother board 100, for example.

  The present invention is not limited to the embodiments described above, and it goes without saying that various modifications are possible within the technical scope described in the claims.

(A) is sectional drawing which shows the conventional shelf apparatus, (b) is a rear view. (A) is sectional drawing which shows the shelf apparatus by Embodiment 1-4 of this invention, (b) is a rear view. It is sectional drawing which shows the principal part of the shelf apparatus by Embodiment 1-4 of this invention. (A) is sectional drawing which shows the principal part of the shelf apparatus by Embodiment 2 of this invention, (b) is a rear view. (A) is sectional drawing which shows the principal part of the shelf apparatus by Embodiment 3 of this invention, (b) is a rear view. (A) is sectional drawing which shows the principal part for demonstrating the structure of the shelf apparatus by Embodiment 3 of this invention, (b) is a rear view. (A) is sectional drawing which shows the principal part for demonstrating the structure of the shelf apparatus by Embodiment 3 of this invention, (b) is a rear view. (A) is sectional drawing which shows the principal part for demonstrating the structure of the shelf apparatus by Embodiment 3 of this invention, (b) is a rear view. It is sectional drawing which shows the principal part of the shelf apparatus by Embodiment 1 of this invention. It is sectional drawing which shows the principal part of the shelf apparatus by Embodiment 4 of this invention.

Explanation of symbols

13B Lower guide base 13T Upper guide base 132 Hole 14L Left side panel 14R Right side panel 142 Placement surface 143 First projection 144a, 144b, 144c Second projection 146 Elastic piece 15 Rear cover 154 Guide pin 152 Projection 153 Projection Part 155 Notch part 100, 100a, 100b, 100c Motherboard 103 Hole part 105 Protrusion 106a, 106b, 106c Notch part 200 Screw

Claims (15)

A shelf device that supports a motherboard into which a plurality of plug-in units are removably inserted, and is a frame that includes lower and upper guide bases and left and right side panels, and is removably mounted on the back of the frame. A shelf device having a rear cover,
Each of the left and right side panels includes first protrusions corresponding to the front surfaces of the left and right sides of the motherboard,
The rear cover includes a protrusion corresponding to the back surface of the motherboard and a guide pin corresponding to a hole formed in the back surface of the motherboard.
By fixing the rear cover to the frame, the motherboard is positioned in the front-rear direction and supported,
The rear cover is positioned and supported in the left-right direction and the up-down direction by inserting the guide pins into the holes of the motherboard positioned in the left-right direction and the up-down direction in the frame. Shelf device to be used. The lower guide base includes a hole corresponding to the protrusion formed on the lower side of the motherboard,
The shelf apparatus according to claim 1, wherein the mother board is positioned and supported in a front-rear direction, a left-right direction, and a lower direction by inserting a protrusion of the mother board into the hole. Each of the left and right side panels includes second protrusions corresponding to the back surfaces of the left and right sides of the motherboard,
The shelf device according to claim 1 or 2, wherein the mother board is positioned and supported in the front-rear direction by inserting the mother board between the first protrusion and the second protrusion.   4. The shelf device according to claim 3, wherein each of the left and right side panels includes a plurality of the second protrusions corresponding to the back surfaces of the left and right sides of the plurality of mother boards having different thicknesses. The left and right side panels each include an elastic piece protruding outward in each rear region.
The rear cover includes left and right flange portions corresponding to the outside of the rear side region of the left and right side panels,
Each of the left and right flange portions includes a notch corresponding to the elastic piece,
The shelf apparatus according to claim 1, wherein the rear cover is positioned and supported in the front-rear direction, the left-right direction, and the up-down direction by engaging the elastic piece with the notch. .   The motherboard and the rear cover are supported in the front-rear direction, the left-right direction, and the up-down direction by screwing the mother board and the rear cover together with the frame by screws. Shelf device as described in one. The upper guide base has a mounting surface corresponding to the front surface of the upper side of the motherboard,
The rear cover includes other protrusions corresponding to the back surface of the upper side of the motherboard,
The shelf apparatus according to any one of claims 1 to 6, wherein the motherboard is positioned and supported in the front-rear direction by fixing the rear cover to the upper guide base.   An electronic apparatus comprising: the shelf device according to claim 1; and the motherboard that is an electronic circuit board.   8. An optical electronic apparatus comprising: the shelf device according to claim 1; and the motherboard that is an electro-optical circuit board. A motherboard supporting method for supporting a motherboard into which a plurality of plug-in units are removably inserted by a shelf device, the shelf device comprising: a lower and upper guide base; and a frame including left and right side panels; In a method of supporting a motherboard having a rear cover that is detachably attached to the back of the frame body,
Forming first protrusions corresponding to the front surfaces of the left and right sides of the motherboard, respectively, on the left and right side panels;
Forming a protrusion on the rear cover corresponding to the back surface of the motherboard and a guide pin corresponding to a hole formed on the back surface of the motherboard;
Fixing the rear cover to the frame to position and support the motherboard in the front-rear direction; and
A step of positioning and supporting the rear cover in the left-right direction and the up-down direction by inserting the guide pins into the holes of the mother board positioned in the left-right direction and the up-down direction in the frame body. Support method of motherboard. Forming a hole corresponding to the protrusion formed on the lower side of the motherboard in the lower guide base;
The motherboard supporting method according to claim 10, further comprising a step of positioning and supporting the motherboard in a front-rear direction, a left-right direction, and a downward direction by inserting a projection of the motherboard into the hole. Forming the second protrusions corresponding to the back surfaces of the left and right sides of the motherboard, respectively, on the left and right side panels;
The motherboard supporting method according to claim 10 or 11, further comprising a step of positioning and supporting the mother board in the front-rear direction by inserting the mother board between the first protrusion and the second protrusion.   The method for supporting a motherboard according to claim 12, further comprising forming a plurality of second protrusions on the left and right side panels respectively corresponding to the back surfaces of the left and right sides of the plurality of motherboards having different thicknesses. . Forming an elastic piece projecting outward in each rear side region in the left and right side panels;
Forming the left and right flange portions corresponding to the outside of the rear region of the left and right side panels on the rear cover;
Forming a notch corresponding to the elastic piece in each of the left and right flange portions;
The motherboard according to any one of claims 10 to 13, further comprising: positioning and supporting the rear cover in the front-rear direction, the left-right direction, and the up-down direction by engaging the elastic piece with the notch. Support method. 15. The method according to claim 10, further comprising a step of supporting the mother board and the rear cover in the front-rear direction, the left-right direction, and the up-down direction by screwing the mother board and the rear cover together with the frame with screws. A method for supporting a motherboard according to one of the above.

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