JP2000138466A - Electronic apparatus device with fixture for supporting leg - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely prevent an overturning of a device capable of being drawn out from a rack caused by a collapse of weight balance when drawn out, with secure and simple structure. SOLUTION: An electronic apparatus device 1 mounted on a rack 2 and capable of being drawn out by means of a slide rail 3 and the like has a removal supporting leg, with a length reaching a floor on its front end face in a direction of drawing. A leaf spring 7 with wedged protrusion 8 is built at the fixing section of the supporting leg. The wedged protrusion 8 projecting from a side of the device 1 before fixing the supporting leg plays a role of a stopper catching on a mounting face 9 of the rack 2 with the device 1 drawn out. A screw fixing the supporting leg pushes the built-in leaf spring 7 and push the wedged protrusion 8 into the device 1 to be able to release the catch and draw the device 1 to such an extent of total stroke of the slide rail 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for securing the stability of an entire rack when an electronic device is pulled out of a rack by a slide rail or the like.

[0002]

2. Description of the Related Art In a conventional electronic apparatus which is mounted on a rack so as to be able to be pulled out by a slide rail or the like, when the weight of the apparatus is heavy, the center of gravity moves to the front of the rack when the apparatus is pulled out, and the rack falls over. Easier to do. Techniques for preventing such a fall include, for example, Japanese Utility Model Publication No. 4-9659.
As described in Japanese Patent Application Laid-Open Publication No. H10-260, a support leg with casters is provided on the lower surface of an electronic device unit mounted so as to be able to swing over a horizontal position and a vertical position, and the support leg is fixed at a vertical position. In some cases, when the electronic device unit is pulled out, the support legs are automatically projected and fixed to a vertical position to support the electronic device unit, thereby preventing the entire rack from tipping over.

[0003]

In the above prior art, the mounting capacity of the unit and the entire rack increases because the supporting legs are stored and held on the lower surface of the electronic device unit.

In addition, the number of parts is large for implementing a stopper mechanism for operating the support legs horizontally and vertically and for limiting the width of pull-out when the support legs do not descend, and the structure is complicated and the production cost is high. Problem.

Further, since the length of the support legs attached to the apparatus does not fluctuate, it can be mounted only at a predetermined position on the rack.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electronic device which has a simple structure and achieves a fall prevention effect without affecting the mounting capacity of the electronic device including a rack.

[0007]

In order to achieve the above-mentioned object, a rack in which an electronic equipment unit is removably mounted and an electronic equipment device including the electronic equipment unit mounted in the rack, the electronic equipment unit includes a rack. A stopper mechanism that cooperates to limit the width of the electronic device unit withdrawn is provided. The stopper mechanism includes a protrusion for restricting the width of drawing out the electronic device unit by contacting the housing of the rack, and a leg attachment portion for attaching a leg for supporting the electronic device unit. The degree of protrusion of the protruding portion is reduced in accordance with the leg mounting operation.

Thus, even when the electronic device unit is pulled out, the protrusion functions as a stopper, and it is possible to effectively prevent the electronic device unit from being pulled out further. Since the protruding portion is retracted in accordance with the attachment of the leg to the leg attachment portion, it is possible to further pull out the unit when the leg is attached, and at the same time, it is possible to prevent the unit from being overturned by being pulled out.

[0009] Further, since a flange for fixing the electronic device unit to the rack is detachable and used as a leg, there is no need to have a leg as a maintenance jig, and the maintenance jig is stored. Management can be saved.

[0010] Further, the leg mounting portion is arranged between both ends of a leaf spring having the one end fixed and the protruding portion formed at the other end, and the leg mounting operation of screwing the leg to the leg mounting portion. It is possible to reduce the number of parts by adopting a simple configuration in which the degree of protrusion is adjusted.

Further, a plurality of mounting holes for mounting the flange to the leg mounting portion are provided so that the length of the legs can be adjusted, thereby eliminating the limitation on the storage height of the unit.

[0012]

An embodiment of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a perspective view showing the appearance of an electronic apparatus according to an embodiment of the present invention as viewed from the front when the electronic apparatus is pulled out. FIG.
FIG. 2 shows an enlarged view of a portion A surrounded by a two-dot chain line in FIG. FIG. 3 is a plan sectional view of a support leg attachment portion of the electronic apparatus.

The apparatus 1 (electronic equipment unit) is mounted on a rack 2 so as to be able to be pulled out by slide rails 3. On the left and right front sides of the apparatus 1, the apparatus 1 is mounted on the apparatus mounting surface 9 of the rack 2 and the apparatus mounting holes 12. A flange portion 13 for fixing is provided. The flange portion 13 is detachably screwed and attached to the device 1, and is attached to the support leg attachment screw hole 6 of the device 1 when the device 1 is pulled out from the rack 2 for maintenance of the device 1. It is used as a leg to prevent falling.

The support leg attachment screw holes 6 are provided on the left and right side surfaces in the front of the device 1 in the drawing direction. The flange 13 is removed from the device 1 and the screw holes 6 for mounting the support legs are provided.
And set the legs on the floor 4. When the device 1 is pulled out from the rack 2, the center of gravity of the entire rack 2 moves in the pulling-out direction of the device 1 and is prevented from falling down. The screw whose flange portion 13 was attached to the apparatus 1 can be shared.

A plurality of support leg mounting holes 11 for mounting the flange portion 13 to the support leg mounting screw holes 6 of the device 1 are provided in the flange portion 13 corresponding to positions where the device 1 is mounted on the rack 2. Even if the mounting position (height) of the device 1 on the rack is changed, the length of the legs can be adjusted to a height that is just right for the floor 4 to be grounded.

As shown in FIG. 3, a leaf spring 7 is provided inside the support leg mounting screw hole 6 so that the front side in the pull-out direction is fixed at the fixed end 2.
As 1, it is attached so as to be in close contact with the inner wall of the device 1. A wedge-shaped convex portion 8 is provided on the free end 22 side of the leaf spring 7 so as to have a vertical surface in the pull-out direction, and protrudes from the side surface of the apparatus. The protrusion a protrudes outward from the front of the device mounting surface 9 on the front of the rack 2, and when the device 1 is pulled out from the rack 2, the wedge-shaped projection 8 is caught on the device mounting surface 9, and serves as a stopper. Has a structure that can draw out only a certain stroke.

The position of the vertical surface of the wedge-shaped projection 8, that is, the stroke L of the device 1 that can be pulled out, is such that the center of gravity moves in the pulling-out direction by pulling the device 1 out of the rack 2, and the entire rack 2 easily falls over. On the other hand, the distance must be sufficient to ensure stability.

When the flange 13 which also serves as a support leg is fixed to the support leg mounting screw holes 6 on both sides with the mounting screw 10 in a state where the stopper is applied by the wedge-shaped convex portion 8, the mounting screw 10 is Depresses the spring 7, whereby the wedge-shaped ridge 8 of the free end 22 is pushed into the device,
Since the hook on the device mounting surface 9 is eliminated and the stopper is released, the device 1 can pull out the entire stroke of the slide rail 3. One of the leaf springs 7 is fixed and the other is a free end 21. The amount of screw pushing at the position of the support leg mounting screw hole 6 for pushing the protruding amount a of the wedge-shaped convex portion 8 into the device. b may be smaller than the protrusion amount a. This screw pressing amount b is a distance d1 from the fixed end 21 of the leaf spring 7 to the screw hole 6 for supporting leg attachment.
And the distance d2 from the support leg mounting screw hole 6 to the wedge-shaped protrusion 8. The distance d2 decreases as the distance from the fixed end 21 increases and increases as the distance from the wedge-shaped protrusion 8 increases. Also, the screw pressing amount b
Must be within the elastic deformation of the leaf spring 7. Therefore,
The length of the mounting screw 10 is a length obtained by adding the plate thickness of the device 1, the plate thickness of the flange portion 13 also serving as a support leg, and the screw pushing amount b corresponding to the protrusion amount a.

According to the above structure, unless the flange portion 13 serving also as a support leg is mounted with the mounting screw 10, the apparatus 1 cannot be pulled out from the rack 2 for the entire stroke, so that the danger of tipping can be reliably avoided. Since the support leg for preventing the device 1 from falling when it is pulled out can also be used for the flange portion 13 which is a part of the device, it is not necessary to prepare a maintenance jig again, and the number of maintenance jigs can be reduced. Since a plurality of support leg mounting holes 11 are provided in the flange portion 13, even if the mounting position is changed, it can function as a support leg for preventing falling.

Since the wedge-shaped projection 8 provided on the leaf spring 7 has a wedge shape, the device 1 is securely caught as a stopper when the device 1 is pulled out from the rack 2, and is pushed into the device mounting surface 9 when the device 1 is stored in reverse. Can be stored smoothly.

FIG. 4 is a plan sectional view of another embodiment of the stopper mechanism.

A stopper member 19 having a wedge-shaped convex portion 8 is provided inside the support leg mounting screw hole 6, and a guide pin 16 is provided at an equal distance from a portion pressed by the support leg mounting screw 10. The coil spring 17 is arranged so that the guide pin 23 penetrates, and the spring receiver 18 is attached so that the stopper member 19 is in close contact with the inner wall of the device 1 by the coil spring 17, and the guide pin 23 penetrates the guide hole 20. are doing.

With the above structure, the wedge-shaped convex portion is pushed in by being pushed by the support leg mounting screw 10, and the hook on the device mounting surface 9 can be released. At this time, since the entire stopper member is pushed in evenly, the protrusion amount a
And the screw pushing amount becomes the same. Also, the risk of plastic deformation due to over-pressing is reduced.

FIGS. 5, 6, and 7 are external views of another embodiment of the support leg. As described above, a dedicated support leg 5 having a support leg mounting hole 11 can be used instead of the flange. FIG. 5 shows that the ground contact area of the dedicated support leg 5 is provided with a ground surface 14 which is open to the left and right, so that the ground contact area is increased and the lateral fulcrum is located outside. It is a thing. In the example of FIG. 6, a caster 15 is provided on the ground side of the dedicated support leg 5, so that when the device 1 is pulled out, the frictional resistance with the floor surface 4 can be reduced and the device can be pulled out smoothly. As shown in FIG. 7, by providing the leveling bolt 16 on the ground side of the dedicated support leg 5, the dedicated support leg 5 is separated from the floor surface 4 due to the deflection of the slide rail 3 when the device 1 is pulled out and the dimensional variation in the mounting position. The leveling bolt 16
, And the dedicated support leg 5 can be set to an appropriate length.

According to this embodiment, when the device 1 is pulled out of the rack, the wedge-shaped convex portion of the plate spring provided on the device is hooked on a part of the rack, so that there is no danger of the rack body falling over. The wedge-shaped projections can be pushed into the interior of the device by releasing the wedge-shaped projections by attaching the support legs that support the device to the support leg mounting part to prevent the device from overturning. Thus, the danger of the rack falling over can be reliably avoided.

Further, the structure of this mechanism is only a stopper mechanism using a supporting leg and a leaf spring, has a very simple structure, and can be provided at a low cost. The space occupied by this mechanism is only the leaf spring part, and the internal mounting capacity can be used effectively.

Further, by providing a plurality of holes for attaching the support legs to the device corresponding to the mounting position of the device on the rack, the length of the support legs from the lower portion of the device to the floor can be varied. Can be supported at any position on the rack.

Further, by using the front flange portion, which is a part of the apparatus, also as the supporting leg, the number of maintenance jigs can be reduced, and the maintenance and management of the maintenance jigs can be omitted.

Further, by making the structure of the support leg open to the left and right outside at the ground contact portion, the contact area is increased, and the fulcrum of the fall in the left and right direction is outside, so that the balance against the fall in the left and right direction can be improved. it can.

Further, by providing the casters at the grounding portion of the support legs, the frictional resistance with the floor surface when the device is pulled out can be reduced, and the device can be pulled out smoothly.

Further, by providing the leveling bolts at the grounding portions of the support legs, the deflection of the slide rail and the dimensional variation of the mounting position can be absorbed when the device is pulled out, and the support legs can be set to an appropriate length.

[0033]

According to the present invention, when the apparatus is pulled out of the rack, the wedge-shaped convex portion of the leaf spring provided on the apparatus is hooked on a part of the rack, so that there is no danger of overturning the rack body. The wedge-shaped projections can be pushed into the interior of the device by releasing the wedge-shaped projections by attaching the support legs that support the device to the support leg mounting part to prevent the device from overturning. Thus, the danger of the rack falling over can be reliably avoided.

[Brief description of the drawings]

FIG. 1 is an external perspective view from the front when an electronic apparatus according to an embodiment of the present invention is pulled out.

FIG. 2 is an enlarged view of a portion A in FIG.

FIG. 3 is a plan sectional view of a support leg attachment portion of the electronic apparatus according to the embodiment of the present invention.

FIG. 4 is a cross-sectional plan view of another embodiment of the stopper mechanism of the present invention.

FIG. 5 is a perspective view of a support leg having a wide contact area according to an embodiment of the present invention.

FIG. 6 is a perspective view of a support leg provided with a caster in a ground contact portion according to an embodiment of the present invention.

FIG. 7 is a perspective view of a support leg provided with a leveling bolt in a ground portion according to an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Device, 2 ... Rack, 3 ... Slide rail, 4 ... Floor surface, 5 ... Dedicated support leg, 6 ... Screw hole for mounting support leg, 7 ...
Leaf spring, 8 ... wedge-shaped protrusion, 9 ... device mounting surface, 10 ...
Support leg mounting screw, 11: Support leg mounting hole, 12: Device mounting hole, 13: Flange part, 14: Ground plane, 15: Caster, 16: Leveling bolt 17: Coil spring, 18: Spring receiver, 19: Stopper member , 20: guide hole 21: fixed end, 22: free end, 23: guide pin

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shigemi Ota 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside Hitachi Image Information System Co., Ltd. (72) Masayoshi Miyazaki 810 Shimoimaizumi Ebina-shi, Kanagawa Prefecture Hitachi, Ltd. PC Division (72) Inventor Shohei Fuse 810, Shimo-Imaizumi, Ebina-shi, Kanagawa Prefecture Co., Ltd. (72) Inventor Toshio Seyama 3-10-22 Sakae, Naka-ku, Nagoya-shi, Aichi F-term (in reference) 3C060 NA02 PB05 RA02 4E360 AB02 AB17 AB23 AB24 AB25 AC12 AC14 AC16 AC23 EA05 EA22 EC02 EC12 EC17 ED02 FA05 GA01 GA06 GA41 GB92

Claims (5)

[Claims] 1. An electronic device comprising a rack on which an electronic device unit can be pulled out and an electronic device unit mounted on the rack, wherein the electronic device unit is provided in cooperation with the rack. A stopper mechanism for limiting a drawer width of the electronic device unit, wherein the stopper mechanism contacts the housing of the rack to restrict a drawer width of the electronic device unit, and supports the electronic device unit. And a leg mounting portion for mounting a leg for the electronic device, wherein the degree of protrusion of the protruding portion is reduced according to a leg mounting operation to the leg mounting portion. 2. The electronic device according to claim 1, wherein the electronic device unit is a flange detachable from the electronic device unit for fixing the electronic device unit to the rack, and is connected to the leg mounting portion. An electronic device comprising: a flange having a mounting portion. 3. The electronic apparatus according to claim 1, wherein said leg attaching operation is an operation of screwing said leg to said leg attaching portion. 4. The electronic device according to claim 1, wherein the degree of protrusion of the protruding portion is reduced between the both ends of the leaf spring having the one end fixed and the protruding portion formed at the other end. An electronic device, wherein the leg mounting portion is arranged. 5. The electronic apparatus according to claim 2, wherein the flange has a plurality of mounting holes for mounting to the leg mounting portion, and the length of the leg can be adjusted.