JP6501610B2 - Frame structure of electrical equipment storage box - Google Patents

Description

  The present invention relates to a frame structure of an electrical device storage box.

  In a conventional electric equipment storage box having a frame structure, four columns each consisting of a support frame, a lateral frame, and a depth frame, and the end portions of the respective frames are welded to form a rectangular frame. However, in order to facilitate assembly, as shown in Patent Document 1, each end of a support frame having a hollow cross-sectional shape, a lateral frame, and a depth frame is inserted into and fixed to a corner piece. A structure has been proposed.

  The frame structure of the electrical device storage box disclosed in Patent Document 1 has an advantage that the strength of the connection can be secured by the corner pieces. However, on the other hand, it is necessary to manufacture a corner piece in which leg portions for connection are protruded in three directions as a dedicated part by casting, and there is a problem that the manufacturing cost becomes high.

JP-A-9-121092

  Accordingly, the object of the present invention is to solve the above-mentioned conventional problems, to simplify the structure and to reduce the manufacturing cost, and for housing an electric device capable of constituting a strong frame structure without requiring a dedicated part by casting. It is to provide the frame structure of the box.

The present invention, which has been made to solve the above problems, has a ceiling frame formed by combining a bending frame having a cross-sectional shape opened on the inner surface side of the box and corner brackets made of bending members at four corners of the bottom frame. Electrical equipment storage comprising a rectangular parallelepiped frame by joining upper and lower end portions of a support frame consisting of a bending frame having a cross-sectional shape that is joined and opened on the inner surface side of the box to these corner fittings by connecting fittings The frame structure of the box, the corner metal fitting has a shape having a bent side on both sides of the bottom and the top, and a ceiling frame and a horizontal frame forming the bottom frame have arms on both sides of the connecting portion The support frame has a fixed side and an opposite side parallel to the support frame, and the bent sides on both sides of the corner fitting are arm portions on both sides of the lateral frame, and the fixed side and the opposite side of the support frame Put in contact with It is characterized in.

  According to the invention of claim 2, in the invention of claim 1, the connection fitting between the corner fitting on the front side to which the door is attached and the support frame is formed inside the box than the bent portion of the end of the door. It is a feature.

  According to the invention of claim 3, in the invention of claim 2, the corner fitting and the support frame are joined by the connection fitting from two directions of the longitudinal direction and the side direction of the box, and the connection fitting in the side direction is covered by the side plate. It is characterized by

  According to the invention of claim 4, in the invention of claim 3, the support frame is provided with a mounting bracket for fixing the side plate in a detachable manner, and functions as a connecting bracket for connecting adjacent box bodies. It is.

  According to the invention of claim 5, in the invention of claim 1, the ceiling frame and the bottom frame are formed of a horizontal frame and a depth frame consisting of a bending frame, and a space is formed at the end of the horizontal frame and the depth frame A corner fitting is joined to this space portion.

  According to the present invention, since all the frames and the corner fittings have a bent structure, a strong frame can be constructed with a simple structure without requiring a dedicated part by casting as in the prior art.

  According to the invention of claim 2, since the connecting portion between the corner fitting on the front side and the support frame is formed inside the box than the bent portion at the end of the door, the connecting fitting is concealed when the door is closed. At the same time, interference between the door and the connection fitting can be avoided even when the door is opened.

  According to the third aspect of the present invention, strength can be given to the front, rear, left and right directions of the box, and side fittings are covered with side plates to hide the fittings.

  According to the invention of claim 4, since the mounting bracket for fixing the side plate can be functioned as a connecting bracket with the adjacent box, the number of parts can be reduced.

  According to the invention of claim 5, the ceiling frame and the bottom frame are constituted by the horizontal frame and the depth frame consisting of the bending frame, and the corner fitting is joined to the space formed at the end of the horizontal frame and the depth frame. Therefore, the position of the corner fitting can be regulated, and joining becomes easy.

It is a perspective view which shows the frame structure of embodiment. It is a perspective view showing the appearance of the box for electric equipment storage of an embodiment. It is explanatory drawing of a horizontal frame. It is explanatory drawing of a depth frame. It is a disassembled perspective view of a corner part. It is a disassembled perspective view of a corner part. It is a disassembled perspective view of a bottom part. It is a perspective view of a corner fitting. It is explanatory drawing of a support | pillar flame | frame. It is a perspective view which shows the relationship between a corner fitting and a support | pillar flame | frame. It is a perspective view which shows the attachment structure of a support | pillar flame | frame. It is a perspective view of a corner part. It is a horizontal sectional view in the state where the door was closed. It is a perspective view of the state which closed the door. It is a perspective view which shows the relationship between a mounting bracket and a support | pillar flame | frame. It is a perspective view of a ceiling corner part. It is a perspective view of a ceiling corner part. It is a perspective view of a hinge part. It is a perspective view of a handle portion. It is a perspective view of a door back. It is a perspective view which shows a locked state. It is a perspective view which shows the state of the connection surface of the mounting bracket which connects an adjacent housing | casing. It is a perspective view which shows the state which connected the adjacent housing | casing. It is explanatory drawing of a base. It is a perspective view which shows 2nd Embodiment. It is explanatory drawing of the support | pillar flame | frame of 2nd Embodiment. It is a perspective view which shows the lower end part of the door of 2nd Embodiment. It is explanatory drawing of the lower end part of the door of 2nd Embodiment. It is explanatory drawing of the horizontal frame of 2nd Embodiment. It is explanatory drawing of the locking rod fixing hole of 2nd Embodiment. It is a perspective view of the door on one side of 3rd Embodiment. It is a perspective view of the other door of 3rd Embodiment. It is a perspective view which shows 3rd Embodiment.

Hereinafter, embodiments of the present invention will be described.
First Embodiment
As shown in FIG. 1, the frame structure of the electric device storage box according to the present invention is configured by a ceiling frame 1, a bottom frame 2, a corner fitting 3, and a support frame 4. As shown in FIG. 2, a door 5 is attached to the front, and the other side is covered by a side plate 6. The upper surface is covered with a ceiling plate 7 and the lower surface is covered with a bottom plate 8 as shown in FIG. Reference numeral 9 denotes a base, 10 denotes a handle of the door 5, and 11 denotes suspension bolts attached to the four corners of the ceiling frame 1.

  As shown in FIG. 1, the ceiling frame 1 and the bottom frame 2 are composed of a horizontal frame 12 and a depth frame 13. FIG. 3 is a view showing the horizontal frame 12 and is a bending frame obtained by bending a metal plate such as a steel plate. FIG. 3 shows the horizontal frame 12 of the bottom frame 2, and the horizontal frame 12 of the ceiling frame 1 is upside down.

  As shown in FIG. 3, this horizontal frame 12 has a cross-sectional shape opened on the upper surface on the inner surface side of the box, and is substantially H-shaped. As shown in the cross-sectional view of FIG. 3, the lateral frame 12 includes arms 14 and 15 on both sides, a connecting portion 16 connecting them, and a bottom plate fixing side 17 connected to one arm 14 and the other. It comprises a draining side 18 and a draining side 19 connected to the arm portion 15 of the second embodiment. The bottom plate fixing side 17 and the drainage side 18 are parallel to the connecting portion 16 which is the bottom. A plurality of holes 20 for fixing the bottom plate 8 are formed in the bottom plate fixing side 17. The bottom plate fixing side 17 is disposed in the direction toward the inside of the box, and the water cutting edge 19 is disposed in the direction toward the outside of the box.

  FIG. 4 is an explanatory view of the depth frame 13 of the bottom frame 2. Similar to the lateral frame 12, the depth frame 13 also has a cross-sectional shape open on the upper surface on the inner surface side of the box, and as shown in the cross-sectional view of FIG. It has a portion 23, a bottom plate fixing side 24 continuous with the arm 21, and a fixture fixing side 25 continuous with the other arm 22. A number of fixing holes 26 are formed in the bottom plate fixing side 24. A large number of fixing holes 27 are also formed in the fixture fixing side 25. An extended side 29 having a notch 28 is formed on the extension surface of the arm 21. The arm portion 22 in which the fixture fixing side 25 is formed has a stepped bending shape in order to give strength. A part of the step-bent portion is extended in the front-rear direction from the fixture fixing side 25 to form an extended side 30.

  In the vicinity of the end portion of the connection portion 23 of the depth frame 13, a through hole 33 for passing an anchor bolt or a suspension bolt 11 is formed. The depth frame 13 is disposed with the bottom plate fixing side 24 facing the inside of the box.

  As shown in FIG. 5 and FIG. 6, when the horizontal frame 12 and the depth frame 13 are combined, the notch 28 formed in the extension side 29 of the depth frame 13 is formed in the H shape of the horizontal frame 12. The arm 14 is inserted. Further, the other arm 15 of the horizontal frame 12 abuts on the end of the extending side 30 formed on the fixture fixing side 25 of the depth frame 13. Thus, when the horizontal frame 12 and the depth frame 13 are combined, as shown in FIG. 6, the two arms 14 and 15 of the horizontal frame 12 and the two extending sides 29 and 30 of the depth frame 13 An enclosed space 34 is formed at the corner. The corner fitting 3 is position-controlled in the space 34 and welded. The corner fitting 3 may be joined to the depth frame 13 by a connecting fitting such as a bolt. Further, as shown in FIG. 6 and FIG. 7, a ground terminal mounting bracket 101 for mounting the ground terminal 100 is formed on the connection portion 16 of the horizontal frame 12.

  As shown in FIG. 7, the bottom plate 8 is fixed to the bottom plate fixing side 24 of the horizontal frame 12. In this embodiment, the bottom plate 8 is divided into two, but may be one. In the case of dividing into two sheets, in order to secure strength, it is preferable to form a bent portion 8a in which the end on the center side has a bent structure shown in FIG.

  As shown in FIG. 8, the corner fitting 3 has a substantially L-shaped longitudinal cross section, and is bent at a bottom portion 41, an upright portion 42 perpendicular to the bottom portion, and a bent side 43 formed on the side surfaces thereof. It consists of a member. A through hole 44 is formed in the bottom portion 41, and a connection hole 45 is also formed in the upstanding portion 42 and the bent side 43. The corner fitting 3 is symmetrical and can be used for eight corners in the same shape. Although the corner fitting 3 is used to connect the ceiling frame 1 and the bottom frame 2 to the support frame 4, the bending portions 43 of the arms 14 and 15 of the lateral frame 12 and both ends of the bottom 41 of the corner fitting 3 are used. By exerting the contact, the reinforcing effect in the front-rear direction is exhibited. Further, the arms 21 and 22 of the depth frame 13 and the open end and the upstanding portion 42 of the bottom 41 of the corner fitting 3 contact each other to exert a reinforcing effect in the left-right direction. A plurality of notch holes 31 are formed at the connection between the upstanding portion 42 and the bent side 43. This is provided to prevent the connection hole 45 formed in the vicinity of the connection portion from being pulled and deformed during bending.

  The support | pillar flame | frame 4 is also a bending flame | frame which has a cross-sectional shape opened to the inner surface side of a box as shown in FIG. The support frame 4 has a fixed side 50 facing the door side, a drain side 51 connected to one end thereof, an L-shaped bent side 52 connected to the other end of the fixed side 50, and a fixed side A connecting side 53 perpendicular to 50, an opposing side 54 parallel to the fixed side 50, and a device mounting side 55 obtained by bending the tip of the side at a right angle. The fixed side 50 faces the outside of the box, and the opposite side 54 faces the inside. That is, the opposite side 54 is a surface facing the front and rear support frame 4, and the connection side 53 faces the side plate 6.

  In the fixed side 50, a connection hole 56 for connecting the corner fitting 3 is formed. The lower end of the water cutting side 51 abuts on the water cutting side 19 of the horizontal frame 12. A connection hole 57 for connecting the corner fitting 3 is also formed on the connection side 53. In the opposite side 54, a hole 58 for fixing a mounting rail of the electric device, a wiring option and the like is formed. The device mounting side 55 is formed with a device mounting hole 59 to which an electric device or a shelf board for mounting the electric device is attached.

  As described above, the connection side with the corner fitting 3 is the two sides of the fixed side 50 and the connection side 53, and the holes on the other side are formed in the vertical direction.

  10 to 14 show the relationship between the bottom frame 2, the support frame 4 and the corner fitting 3. The corner fitting 3 is inserted into the space 34 of the bottom frame 2 and welded as shown in FIG. Next, insert the support frame 4 along the outer surface of the rising portion 42 and the bent side 43, and screw in the screw 60 as a connection fitting from the connection hole 56 of the fixed side 50 of the support frame 4 as shown in FIG. Screws 61 are screwed from the connection holes 57 of the connection side 53 of the frame 4 to fix the support frame 4 to the corner fitting 3. That is, as shown in FIG. 13, the corner fitting 3 and the support frame 4 are connected from two directions, that is, the front-rear direction and the side direction of the box. Further, since the bent sides 43 of both ends formed from the rising sides of the corner fitting 3 are formed to abut on the fixed side 50 and the opposite side 54 of the support frame 4, respectively, in the front-rear direction It is possible to further have the reinforcing effect of

  As described above, since the corner fitting 3 is disposed at a position close to the outside of the box to support the column frame 4, the space for mounting the device inside the box is not compressed. Further, since the support frame 4 is fixed to the corner fitting 3 by the screws 60 and 61 serving as connection fittings from two directions in the front and rear direction and the lateral direction, the movement in the left and right direction and the front and rear direction of the electric device storage box is suppressed. It can be given strength.

  As shown in FIG. 15, a plurality of slits 62 are formed in the connection portion between the connection side 53 and the opposite side 54 of the support frame 4, and a crank-like mounting bracket 63 is inserted and fixed by a screw 64. There is. The mounting bracket 63 is used to mount the side plate 6. More specifically, as shown in FIGS. 15 and 18, the mounting hole 49 of the side plate mounting surface 48 of the mounting bracket 64 and the side plate 6 are mounted with screws 47. The mounting bracket 63 is bent in a crank shape, and the mounting surface 65 of the side plate 6 is positioned slightly outside the connection side 53 of the support frame 4. Further, the strength of the mounting bracket 63 is improved by bending it in a crank shape.

  If the mounting bracket 63 is provided on the outer surface of the connection side 53 of the support frame 4, the side plate 6 will protrude outward from the support frame 4. Further, when the mounting bracket 63 is L-shaped, it is mounted using the hole portion 58 of the opposite side 54, and the mounting position of the mounting rail or the like mounted to the hole portion 58 is limited. Furthermore, since the mounting bracket 63 is formed by bending a steel plate, there is a problem that the bending can not be performed when the crank amount is shortened, or a problem that the thickness of the steel plate needs to be reduced occurs. On the other hand, these problems can be avoided by inserting and fixing the crank-like mounting bracket 63 into the slit 62 as in the embodiment. Further, since the upper and lower end portions of the mounting bracket 63 are fixed so as to abut on the end portion of the slit 62, it is possible to prevent the mounting bracket 63 from rotating.

  In addition, this mounting bracket 63 is formed so that attachment or detachment is possible, and when the side plate 6 is unnecessary, it is also possible to remove. Furthermore, as shown in FIG. 22 and FIG. 23, the mounting bracket 63 functions as a connecting bracket for connecting and connecting the mounting bracket 63 of the adjacent box as well as mounting the side plate 6. After the connecting surfaces 66 of the mounting brackets 63 of both frame structures are face-matched, they are fixed to the holes 67 by bolts 69. In addition, since the mounting bracket 63 serves both as fixing of the side plate 6 and a connecting bracket with the adjacent frame structure, the number of parts can be reduced.

  The above description is given for the relationship between the bottom frame 2, the support frame 4, the corner fitting 3 and the side plate 6 on the lower side of the box, but the relationship between the upper ceiling frame 1, the support frame 4 and the corner fitting 3 The same is true except that the heavens and the earth are reversed. The state is shown in FIG. 16 and FIG.

  Next, the structure of the door 5 will be described. As shown in FIGS. 18 to 20, the door 5 is pivotally attached to the front of the box by a box side hinge 70, a door side hinge 71, and a hinge pin 72. As shown in FIGS. 13 and 14, a bent portion 73 toward the center of the door 5 is formed at the tip of the door 5, and when the door 5 is closed, the screw 60 of the fixed side 50 of the support frame 4 is It is formed to cover the That is, the connection between the corner fitting 3 on the front side and the support frame 4 is made inside the box than the bent portion 73 of the end of the door 5. Thus, when the door 5 is closed, the screw 60 serving as the connection fitting is hidden, and interference between the door 5 and the connection fitting can be avoided even when the door 5 is opened. The side plate 6 is also formed with a bent portion 6a toward the center of the side plate 6 at the left, right, upper and lower end portions, and covers a screw 61 connecting the support frame 4 and the corner fitting 3. In addition, packing 74 is formed inside the above-mentioned door side hinge 71 on the back of the door 5, when the door 5 is closed, it contacts with the water cutting side 51 of the support frame and the water cutting side 19 of the horizontal frame 12, Dust proof performance is secured.

  As shown in FIG. 19 where the front surface of the door 5 is omitted to show the structure of the handle 10, the handle 10 is provided on the front surface of the door 5 and a tongue 81 shown in FIG. . As shown in FIG. 21, the handle 81 engages with the back surface of the fixed side 50 of the support frame 4 by the handle operation. Also, the upper and lower arms of the tongue 81 are pivotally attached to the proximal ends of the upper and lower locking rods 82. The tip end of the lock bar 82 is guided by the lock bar restricting member 83 on the back surface of the door 5 and engages with the back surface of the arm 15 of the horizontal frame 12 as shown in FIG. The door 5 can thus be locked in the closed position. The upper portion of the lock bar 82 is also engaged with the back surface of the arm 15 of the horizontal frame 12 in the same manner as the lower portion, and is guided by the lock bar restricting member 83 formed on the door 5.

  As shown in FIG. 24, the base 9 is configured by welding four bending frames 84 and 85. The electrical device storage box is mounted on the upper surface of the base 9 and fixed to the base 9 by bolts 86 penetrating through the through holes 33 of the depth frame 13 and the through holes 44 of the corner fitting 3 as shown in FIG. Further, a bolt mounting hole 87 for passing an anchor bolt or the like is formed on the lower surface of the base 9.

Second Embodiment
In the first embodiment described above, the water cutting side 19 and the water cutting side 51 are formed in the horizontal frame 12 and the support frame 4, respectively, to prevent the entry of water from the outside. However, in the second embodiment shown in FIG. 25 and the following figures, as shown in FIG. 26, a pillar frame 4 having no water cutting edge 51 is used. In this case, as shown in FIGS. 27 and 28, the bent portions 73 of the door 5 are formed not only on the left and right sides but also on the upper and lower end portions, and the packing 90 is formed at the opposing position. Have Also in this embodiment, the screws 60 and 61 serving as the connection portion between the support frame 4 and the corner fitting 3 are positioned inside the box than the packing 90.

  In the second embodiment, as shown in FIG. 29, the draining side 18 of the lateral frame 12 is bent inward. Further, as shown in FIG. 9, the support frame 4 has a structure shown in FIG. 28 in which the water cutting edge 51 is bent inward. The depth frame 13 is the same as in FIG.

  In the second embodiment, as shown in FIG. 30, the lock rod fixing hole 91 is formed in the draining side 18 of the horizontal frame 12. If the lock rod fixing holes 91 are formed at both ends of the horizontal frame 12, the door 5 can be shared as either the right opening or the left opening. Furthermore, if it is formed in the central part, it can be shared as a double door.

Third Embodiment
In the third embodiment, as shown in FIG. 33, the door 5 has a double-opening structure. In this case, the handle 10 capable of operating the tongue 81 and the lock bar 82 is attached to one door 5 as shown in FIG. 31 and the lock rod 82 without the tongue 81 is attached to the other door 5 as shown in FIG. And the handle 10 are attached. The latter door 5 of FIG. 32 is first brought into a closed state, and the lock bar 82 is fixed to the back side of the draining side 18 of the lateral frame 12. A notch 92 is formed at an end of the door 5 on the handle side. Then, when one door 5 of FIG. 31 is closed, the tongue 81 is inserted into the notch 92, and the tip of the lock bar 82 is engaged with the back surface of the horizontal frame 12 to close both doors 5 I assume. The configuration of the other frame structures and the like is the same as that of the first embodiment and the second embodiment.

  As described above, the frame structure of the electric device storage box of the present invention has an advantage that the structure is simple, the manufacturing cost is low, and a strong structure can be obtained without requiring a dedicated part by casting. is there.

Reference Signs List 1 ceiling frame 2 bottom frame 3 corner bracket 4 post frame 5 door 6 side plate 6a bent portion 7 ceiling plate 8 bottom plate 8 a bent portion 8b screw 9 base 10 handle 11 suspension bolt 12 side frame 13 depth frame 14 arm 15 Arm portion 16 Connecting portion 17 Bottom plate fixing side 18 Draining forming side 19 Water cutting side 20 Hole 21 Arm portion 22 Arm 23 Connecting portion 24 Bottom plate fixing side 25 Mounting tool fixing side 26 Fixing hole 27 Fixing hole 27 Fixing hole 28 Notched part 29 Extension side Reference Signs List 30 extension side 31 notch hole 33 through hole 34 space portion 41 bottom portion 42 rising upper portion 43 bent side 44 through hole 45 connection hole 47 screw 48 side plate mounting surface 49 mounting hole 50 fixed side 51 water cutting side 52 bent side 53 connecting side 54 Opposite side 55 Equipment mounting side 56 Connection hole 57 Connection hole 58 Hole 59 Equipment mounting hole 60 Screw 61 Screw 62 Slit 63 Mounting bracket 64 Screw 65 Mounting surface 66 Connecting surface 6 Hole 68 Mounting hole 69 Bolt 70 Box side hinge 71 Door side hinge 72 Hinge pin 73 Folded part 74 Packing 81 Bello 82 Locking bar 83 Locking bar regulating member 84 Bending frame 85 Bending frame 86 Bending frame 86 Bolt 87 Bolt installation Hole 90 Packing 91 Locking rod fixing hole 92 Notch 100 Ground terminal 101 Ground terminal mounting bracket

Claims (5)

A corner fitting made of bending members is joined to the four corners of a ceiling frame and a bottom frame formed by combining a bending frame having a cross-sectional shape opened to the inner surface side of the box, and a cross-sectional shape opened to the inner surface side of the box A frame structure of an electrical equipment storage box comprising a rectangular parallelepiped frame by joining upper and lower end portions of a support frame consisting of a folding frame to these corner fittings by connecting fittings ,
The corner fitting has a shape with a bent side on both the bottom and the top, and the horizontal frame forming the ceiling frame and the bottom frame has a shape with arms on both sides of the connecting portion, and the support frame has a fixed side And a shape with opposing sides parallel to it,
A frame structure of an electrical equipment storage box characterized in that bent sides on both sides of a corner metal fitting are brought into contact with arm portions on both sides of a horizontal frame and fixed and opposite sides of a support frame .   The electrical equipment storage according to claim 1, characterized in that the joining by means of the connection fitting between the corner fitting on the front side to which the door is attached and the support frame by the connection fitting is performed inside the box than the bent portion of the end of the door. Box frame structure.   The electrical equipment storage according to claim 2, characterized in that the connection with the corner fitting and the support frame by the connection fitting is performed from two directions of the longitudinal direction and the side direction of the box, and the side fitting is covered by the side plate. Box frame structure.   4. A frame structure of a storage box for an electric device storage box according to claim 3, wherein a mounting bracket for fixing the side plate is detachably provided on the support frame and functions as a connecting bracket for connecting adjacent box bodies. The ceiling frame and the bottom frame consist of a horizontal frame consisting of a bending frame and a depth frame,
2. A frame structure of an electrical equipment storage box according to claim 1, wherein a space is formed at an end of the horizontal frame and the depth frame, and a corner fitting is joined to the space.

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