CN1080471C - Distribution box - Google Patents

Abstract

To provide a switch-gear housing which can facilitate assembling and is high strength. This housing is provided with a reinforcing part 20f, whose cross section is formed of U-shape by bending both sides of a top plate 20 and a bottom plate 21, and the upper and lower end parts of a pair of side plates 22, 23, which serve as a reinforcing part 22a, 23a formed by bending both the sides to the inner surface of the reinforcing part 20f, are brought into contact with the inner surface of the reinforcing part 20f. An engagement part by a combination of a conical rough surface 29,30 is formed at a contact part between the respective plates, and temporary taking is conducted, so as not to shift in the direction of a plate contact surface for tightening with a tightening member 31.

Description

Distribution box

The present invention relates to be subjected to the structure of converting equipment with distribution equipment box.

Figure 28 is the distribution box that Japanese patent of invention discloses the existing metallic plate fit that 1985 No. 131005 communique narrate, and at the sidepiece configuration side frame 502,503 of upper ledge 500, underframe 501, forms casing with bolted respectively.In addition, 504,505 dividing plate and the accessory septas that are mounted in the above-mentioned casing.Figure 29 represents to be assembled into the state of this casing.In this structure, owing to be the fastening structure in docking section 506 that will be bent into the convex shoulder shape with bolt 507, so the rigidity of docking section 506 a little less than, under the state after equipment is installed in inside, in case sling in the top of casing, casing is with regard to easy deformation, thereby exists the problem of the special tool(s) of the usefulness of need slinging.In addition and since the rising of pressing in when producing because of internal arc in the axial action of rivet bigger power, might be so exist with the problem of rivet portion destruction.

In addition, Figure 30 represents to make frame member 508 to be combined into framework forms casing 509 with welding example.The problem points of this example, with the existing problem points that discloses No. 131005 communique in 1985 as Japanese patent of invention pointed out identical, exist and be necessary to wash successively, apply and problem that drying and operation spend the activity duration continuously, in a large number and manufacturing equipment is maximized.In addition, after welding finishes,, as shown in figure 31, exist the problem that in factory, needs roomy site of storage 510 waiting under the state of to be applied, assembling.

Aforesaid existing distribution box, in the metallic plate compound mode, owing to be to make docking section 506 butt joint that is bent into the convex shoulder shape and with the structure of bolted, so the rigidity of docking section 506 is low, have because of slinging after the controller switching equipment assembling to make the anxiety of box deformation, and the interior pressure that exists internal arc generation when having an accident may be damaged the problem of casing.In addition, in welding manner, because operations such as welding, coating, keeping are continuous, pretend industry and need the expensive time, and because after being assembled into casing, for applying, taking care of, so exist the problem that makes manufacturing equipment maximize, need roomy site of storage.

For solving above-mentioned existing problems, the objective of the invention is to, provide a kind of assembling easy and high-intensity distribution box.

For achieving the above object, distribution box of the present invention is that upper ledge, underframe are made the cross section is コ word shape, and facial within it, butt has both sides to be bent into the upper and lower end parts of a pair of side frame of rib, and will be fastening each other.

In addition, in the front or the back of above-mentioned casing, upper ledge, underframe and a pair of side frame be connected, disposed regularly picture frame shape plate each other.

In addition, the holding section is set, so that the direction of plate bearing surface is not carried out is temporary fixed and fastening with clamp structure partially at each plate abutting part each other.

In addition, the combination of coniform jog is made in the holding section, and it is fastening at the center of coniform jog the Kong Bingyong clamp structure to be set.

In addition, it is コ word shape that upper ledge, underframe are made the cross section, facial within it, butt has both sides to be bent into the upper and lower end parts of a pair of side frame of rib, simultaneously, under the state of the planar portions inner face that makes the upper and lower end parts contact upper ledge of side frame, underframe, that upper ledge, underframe and side frame is fastening each other.

In addition, it is コ word shape that upper ledge, underframe are made the cross section, facial within it, and butt has both sides to be bent into the upper and lower end parts of a pair of side frame of rib, behind fastening formation casing each other, the both sides side frame with equipment place frame connect, fixing.

In addition, side frame system by the rib of both sides almost parallel configuration with this rib rectangular quadrature and the connecting portion that rib is connected constituted roughly, and its blank integral body cutting by 1 block of plate forms.

The present invention is コ word shape owing to the cross section is made in the both sides bending of upper ledge, underframe, in this facial connect with the upper and lower end parts of the both sides bending being made a pair of side frame of rib and make each other in addition fastening, so simple in structure and assembling is easy.

In addition because at the front or the rear face of above-mentioned casing, with upper ledge, underframe and a pair of side frame be connected, disposed regularly picture frame shape plate each other, so can obtain higher intensity.

In addition, owing to the holding section is set, so that the direction of plate bearing surface is not carried out is temporary fixed and fastening with clamp structure partially, so assemble easy and can obtain high-intensity casing at each plate abutting part each other.

In addition, because the combination that coniform jog is made in the holding section, it is fastening at the center of coniform jog the Kong Bingyong clamp structure to be set, so the processing of jog and assembling are very easy to.

In addition, because it is コ word shape that upper ledge, underframe are made the cross section, facial within it, butt has both sides to be bent into the upper and lower end parts of a pair of side frame of rib, simultaneously, under the state of the planar portions inner face that makes the upper and lower end parts contact upper ledge of side frame, underframe, upper ledge, underframe and side frame is fastening each other, thus displacement can be prevented at the casing fore-and-aft direction, and because of the planar portions inner face that makes upper ledge, underframe and the mutual butt of upper and lower end parts of side frame, prevented displacement, so improved the intensity of casing.

In addition, because it is コ word shape that upper ledge, underframe are made the cross section, facial within it, butt has both sides to be bent into the upper and lower end parts of a pair of side frame of rib, will be each other behind the fastening formation casing, the both sides side frame with equipment place frame connect, fixing, so simple in structure and can improve the intensity of casing.

In addition, since side frame system by the rib of both sides almost parallel configuration with this rib rectangular quadrature and the connecting portion that rib is connected constituted roughly, and the whole cutting of its blank by 1 block of plate forms, so can make coating, weld job simple, can shorten the activity duration significantly.

The simple declaration of accompanying drawing

Fig. 1 is the stereogram of the expression embodiment of the invention 1 main box.

Fig. 2 makes the side sectional view of the expression embodiment of the invention 1 controller switching equipment.

Fig. 3 is the end view of the expression embodiment of the invention 1 distribution equipment box.

Fig. 4 is the stereogram of the expression embodiment of the invention 1 main box.

Fig. 5 is the stereogram of the side frame of the expression embodiment of the invention 1 main box.

Fig. 6 is the stereogram of the picture frame shape plate of the expression embodiment of the invention 1 main box.

Fig. 7 is the cutaway view along D-D line among Fig. 4.

Fig. 8 is the cutaway view along E-E line among Fig. 4.

Fig. 9 is the cutaway view along F-F line among Fig. 4.

Figure 10 is the cutaway view along G-G line among Fig. 4.

Figure 11 is the cutaway view along H-H line among Fig. 5.

Figure 12 is the cutaway view along J-J line among Fig. 5.

Figure 13 is the cutaway view along K-K line among Fig. 6.

Figure 14 is the cutaway view along L-L line among Fig. 6.

Figure 15 is the cutaway view along M-M line among Fig. 4.

Figure 16 is the cutaway view along L-L line among Fig. 4.

Figure 17 is the cutaway view along P-P line among Fig. 4.

Figure 18 is the cutaway view along Q-Q line among Fig. 4.

Figure 19 is the cutaway view along R-R line among Fig. 4.

Figure 20 is the cutaway view along S-S line among Fig. 4.

Figure 21 is the cutaway view along T-T line among Fig. 4.

Figure 22 is the details drawing of X portion among Figure 19～Figure 21.

Figure 23 is that the equipment of the expression embodiment of the invention 2 is placed the stereogram of frame installment state.

Figure 24 is that expression Figure 23 equipment is placed the stereogram of frame outward appearance.

Figure 25 is the cutaway view along U-U line among Figure 23.

Figure 26 is the stereogram of the expression embodiment of the invention 3 holding sections.

Figure 27 is the stereogram of the parts storage configuration of the expression embodiment of the invention 1.

Figure 28 is the structure chart of the existing distribution equipment box of expression.

Figure 29 is the stereogram of expression Figure 28 confined state.

Figure 30 is the welded stereogram of the existing casing of expression.

Figure 31 is the stereogram of the storage configuration of expression Figure 30 casing.

Embodiment 1

Fig. 2 is the end view of the controller switching equipment behind the expression embodiment of the invention 1 use casing.Among the figure, the casing of controller switching equipment comprises: the main box 1 of placing main circuit equipment; Place the control cabinet 2 of (not shown) such as display, relays; To the cable box 4 that the cable of introducing from the outside 3 is placed, each casing is divided into F, A, B in Fig. 2.In addition, in this example, the F side is the front face side of controller switching equipment, and the B side is the back side.

After the casing assembling, use equipment is placed the auxiliary frame member 5,6,7,8 that usefulness is installed current transformer 9,10 and equipment placement frame 11,12 is installed in the lump on main box.In addition, at the central portion of main box 1, depth direction disposes 3 bus-bars conductors 13 in Fig. 2, and insulating sleeve 14, current transformer 9,10 and the cable 3 of bus 13, equipment being placed frame 11 by bonding conductor 13a connect.In addition, the 15th, the equipment that is placed on is placed the extraction circuit breaker in the frame.

Fig. 3 is an end view of only each casing being extracted out represented casing for the casing notion of holding above-mentioned Fig. 2 explanation easily.In addition, chain-dotted line is represented each parts block position each other among the figure.Among the figure 5～8th, assembling main box 1 back, facial installed device is placed the auxiliary frame member that usefulness is installed in the both sides of main box 1.And 16 are bases, and the bottom of main box 1, control cabinet 2 and cable box 4 is connected.

Fig. 1 is the stereogram of main box 1 shown in Figure 3.Among the figure, the 20th, upper ledge, the 21st, underframe, the 22nd, left frame, the 23rd, right frame, the 24th, picture frame shape plate.The upper end of side frame 22,23 roughly is bending part (rib) 20f of the upper ledge 20 of コ word shape, the inboard butt of 20g (with reference to Fig. 4) with the cross section, and fastening in the position of fastening portion 25.In addition, the lower end of side frame 22,23 is the bending part inner face side butt of the underframe 21 of コ word shape with the cross section, and fastening in the position of fastening portion 26.In addition, picture frame shape plate 24 is the same with side frame 22,23, respectively with the bending part inner face side butt of upper ledge 20, underframe 21, and fastening in the position of fastening portion 27,28.As described later, for stoping, under the above-mentioned state of fastening portion's 25,26,27,28 engagings, give fastening securely with clamp structure to the relatively moving of plate face direction again.

Fig. 4 be expression main box 1 with constitute its upper ledge 20 and underframe 21 figure that is mounted to the stereogram state.In addition, chain-dotted line is represented each parts block position each other.In the present embodiment, prolong and form bending part (rib) 20f, 20g at the fore-and-aft direction of two side direction main boxes 1 of upper ledge 20, so that the cross section of upper ledge 20 roughly is コ word shape.In addition, by chest portion usefulness, only leave the part of the beam that becomes casing, and be provided with peristome 20a, 20b in the both sides of upper ledge 20 as conductor arrangement cable (not shown).As a result, the beam of the both sides of the upper ledge 20 of almost parallel formation partly uses connecting portion 20c, 20d, the 20e of the form configuration of intersecting with its approximate right angle to be connected.In addition, beam described here, being meant in the both sides of upper ledge 20 to prolong the column that is provided with to the casing fore-and-aft direction, is to comprise bending part (rib) 20f, 20g and bend into the 20h of portion (with reference to Fig. 8) and the cross section is the コ word shape part (being called frame portion in the claim 7) of (being different from above-mentioned コ word shape cross section) among Fig. 4.In addition, connecting portion 20e is bent into the cross section and is コ word shape, to strengthen bending strength.

Peristome 20a, 20b form because upper ledge is by 1 blank (iron plate) stamping-out (or remove with laser processing), so the beam portion of both sides and connecting portion 20c, 20d, 20e fuse.Therefore, because the joint portion of beam portion and connecting portion 20e, 20d, 20e firmly keeps squareness,, can keep the shape of stipulating as upper ledge 20 so, see distortion easily though slightly to see upper ledge 20 are aggregates of bar.Therefore, in the operating process when assembling, also play the effect that beam portion assigned position each other can not be out of shape.In addition, when connecting portion 20c, 20d, 20e being connected with beam portion with welding, for separately parts make, part is got all the ready, welding, alignment etc. need the more activity durations, but cut out the words that method (punching press, laser cutting etc.) is made as if using by 1 block of plate, just do not need those time, play the effect that can shorten Production Time significantly.

In addition, when using coated steel plates, cutting, crooked back just need not apply, and play the effect that more can shorten Production Time.

In the present embodiment, form bending part (rib) 21a, 21b and cross section in the both sides of underframe 21 makes its fore-and-aft direction to main box 1 prolong with roughly being コ word shape.Peristome specially is not set on the underframe face, and is provided with otch 21c in the part that connects cable 3 shown in Figure 2.In addition, at the front face of underframe 21, the rib 21f that forms the cross section and roughly be コ word shape and prolong to two side directions.

In addition, fasten portion 25 (portion that fastens of upper ledge 20 and side frame 22,23), fasten portion 26 (portion that fastens of underframe 21 and side frame 22,23), fasten portion 27 (portion that fastens of upper ledge 20 and picture frame shape plate 24) and fasten portion 28 (portion that fastens of underframe 21 and picture frame shape plate 24) and form holding section described later, here, after two sides' fastened member (upper ledge 20 and side frame 22 etc.) is engaged, fastening with clamp structures such as rivets.

Fig. 5 is the side frame 22 shown in Figure 4 and the stereogram of side frame 23.In that being bent into L word shape, peripheral part forms in the rib (side direction front side bending part 22a, side direction rear side bending part 22b, last bending part 22c, following bending part 22d), identical with upper ledge 20, use blanking method (or laser cutting) to form operation hole 22e, 22f by the blank (iron plate) of 1 block of plate.As a result, the rib of connecting portion 22g and both sides roughly at right angles state intersect, and in operating process, also make the rib of both sides firmly be held in the angle of regulation.In addition, it is identical with upper ledge to fasten portion 25,26, forms holding section described later.

Fig. 6 is the stereogram of picture frame shape plate 24 shown in Figure 4.This plate is also the same with upper ledge 20, underframe 21, is cut out by 1 block of plate, and is made into the shape of regulation with process for stamping (or laser cutting).For the cross section of the both sides that make this picture frame shape plate 24 also is L word shape,, and prolongs and form bending part (rib) 24a, 24b to the above-below direction of picture frame shape plate 24 with the end bending.In addition, in the occasion of seeing from the front face side of casing, the inframarginal 24d of lateral margin plate 24e, the 24f of the above-below direction of both sides, the supramarginal plate 24c on top, bottom is combined into picture frame shape plate integratedly.As shown in Figure 1, owing to be fixed under the state of this picture frame shape plate 24 after upper ledge 20, underframe 21, side frame 22,23 are connected, so to the effect of casing transverse direction under the situation of twisting resistance or crooked power, this picture frame shape plate just contends with these power, thereby can prevent the distortion (reverse, crooked) of casing.

Fig. 7 is the cutaway view of the upper ledge 20 that the D-D direction is seen in Fig. 4.In addition, 20j, 20k are the otch that makes up usefulness with side frame 23.Also be provided with same otch in side frame 22 1 sides.In addition, 20m is the otch that makes up usefulness with picture frame shape plate 24.

Fig. 8 is the cutaway view of the upper ledge 20 that the E-E direction is seen in Fig. 4.In addition, the both sides of upper ledge 20 are bent into L word shape and form aforesaid rib, but in this example, are provided with in the inboard again and bend into the 20h of portion, only see single rib, and then the cross section roughly is コ word shape.This method improves the integrally bending intensity of upper ledge 20, and has the advantage of the installation that can be used for being installed in the various members in the casing, but also can not have the 20h of the portion of bending into.

Fig. 9 is the cutaway view of the underframe 21 that the F-F direction is seen in Fig. 4.In addition, 21e, 21f are and side frame 23 combination otch.Also be provided with same otch in side frame 22 1 sides.In addition, 21g is the otch that makes up usefulness with picture frame shape plate 24.

Figure 10 is the cutaway view of the underframe 21 that the G-G direction is seen in Fig. 4.In addition, the both sides of underframe 21 are bent into L word shape and form aforesaid rib 21a, 21b, but in this example, are provided with in the inboard again and bend into the 21d of portion, only see single rib, and then the cross section roughly is コ word shape.This method improves the integrally bending intensity of underframe 21, and has the advantage of the installation that can be used for being installed in the various members in the casing, but also can not have the 21d of the portion of bending into.

Figure 11 is the cutaway view of the side frame 22 that the H-H direction is seen in Fig. 5.

Figure 12 is the cutaway view of the side frame 22 that the J-J direction is seen in Fig. 5.22a is bending part (rib), and longer than the other end of erection unit placement frame 11 usefulness.In addition, pars intermedia is the diagram abridged meaning among the figure, represents with chain-dotted line.

Figure 13 is the cutaway view of the picture frame shape plate 24 that the K-K direction is seen from Fig. 6.

Figure 14 is the cutaway view of the picture frame shape plate 24 that the L-L direction is seen from Fig. 6.In addition, the both sides of picture frame shape plate 24 are bent into L word shape and form aforesaid rib 24a, 24b, but in this example, are provided with in the inboard again and bend into the 24g of portion, only see single rib 24a or 24b, and the cross section roughly is コ word shape.This method improves the integrally bending intensity of picture frame shape plate 24, and has the advantage of the installation that can be used for being installed in the various members in the casing, but also can not have the 24g of the portion of bending into.

Figure 15 partly dissects M-M among Fig. 4 and represents the cutaway view of upper ledge 20 and the assembled state of side frame 22.Among the figure, 20f is the rectangular rib of end bending with upper ledge 20, and the facial butt in the facial outside with side frame 22 in it.22c is the bending part (rib) of the upper end of side frame 22, and is in above it and the upper ledge 20 inner faces position of butt roughly, but considers the actual manufacturing dimension error of Figure 22 holding section described later, can be provided with gap slightly.

Figure 16 partly dissects N-N among Fig. 4 and represents the cutaway view of underframe 21 and the assembled state of side frame 22.Among the figure, 21a is the rectangular rib of end bending with underframe 21, and the facial butt in the facial outside with side frame 22 in it.22d is the bending part (rib) of the bottom of side frame 22, and is in below it and the underframe 21 inner faces position of butt roughly, but considers the actual manufacturing dimension error of Figure 22 holding section described later, can be provided with gap slightly.

Figure 17 partly dissects P-P among Fig. 4 and represents the cutaway view of upper ledge 20 and the assembled state of picture frame shape plate 24.Among the figure, 20e is the connecting portion of upper ledge 20 front face side, and the supramarginal plate 24c butt of its interior face and picture frame shape plate 24.The 27th, fasten portion, double as Figure 22 holding section described later.In addition, consider the making error, make following and upper end picture frame shape plate 24 of the ceiling portion of upper ledge 20 have slightly gap.

Figure 18 partly dissects Q-Q among Fig. 4 and represents the cutaway view of underframe 21 and the assembled state of picture frame shape plate 24.Among the figure, 21f is the rib of underframe 21 front face side, and the inframarginal 24d butt of its front face side and picture frame shape plate 24.The 28th, fasten portion, double as Figure 22 holding section described later.

Figure 22 is the cutaway view of the portion that fastens (being 25～28 among Fig. 4) of X portion among expression Figure 19～Figure 21.Among the figure, the 29th, the cone shape recess that on a side plate, forms, the 30th, the cone shape protuberance that on the opposing party's plate, forms.Protuberance 30 embeds recess 29, is engaging taper seat to be close to state.Under the state that recess 29 and protuberance 30 make up, fastening with near the rivet 31 protuberance 30 central shafts with connecting recess 29.In addition, 31a is a manufactured head, and 31b is the plastic deformation portion of rivet pin.

If act on distribution equipment box advocate to transport the time 3 kinds of expansive forces when the load of the power of hanging oneself, place apparatus class transmits power and inner outburst, if make body structure of the present invention, then be transformed two sides' plate deflection face direction (with casing owing to act on this power of fastening in the portion, up and down, front and back or this compound direction) direction, so this power is delivered on the opposing party's the plate from a side plate by the taper seat of holding section.And if snap-latch surface is coniform, then produces component, but increased the fastening force of holding section, and reduce the component of the thickness direction of plate, and will act on rivet 31 axial power and be controlled in the permissible value by the inclination angle that reduces taper seat to the thickness direction of plate.

In addition, by with fastening in addition near the center of clamp structure (rivet 31 etc.) to the holding section that constitutes by recess 29 and protuberance 30, can be firmly fastened to above-mentioned taper seat (snap-latch surface) is that component produces the source, and can be controlled at Min. to the axial component that produces at clamp structure.As shown in figure 22, when holding section and the portion of fastening were not same position, it was just big slightly again to act on the axial component of clamp structure.

In addition, exemplified the example that uses rivet 31 as clamp structure, but used bolt also can obtain same effect.

Figure 19 partly dissects R-R among Fig. 4 and represents upper ledge 20 and the combination of picture frame shape plate 24, the cutaway view of tightening state.Among the figure, the 27th, fasten portion, the 31st, rivet.The detailed structure of fastening portion 27 makes the inner face butt of the bending part 20f of the bending part 24a of picture frame shape plate 24 and upper ledge 20 as shown in figure 22, and make under concavity holding section 29 and the state that convex holding section 30 engages fastening with rivet 31.

Figure 20 partly dissects S-S among Fig. 4 and represents upper ledge 20 and the combination of side frame 22, the cutaway view of tightening state.Make the inner face butt of side frame 22 and the bending part 20f of upper ledge 20, and make under concavity holding section 29 and the state that convex holding section 30 engages usefulness rivet 31 fastening.

Figure 21 partly dissects T-T among Fig. 4 and represents underframe 21 and the combination of side frame 22, the cutaway view of tightening state.Make the interior facial butt of side frame 22 and the bending part 21a of underframe 21, and make under concavity holding section 29 and the state that convex holding section 30 engages usefulness rivet 31 fastening.

Adopt structure like this, even for example press liter in making because of the accident in the controller switching equipment produces internal arc, because the rib rigidity of the both sides of upper ledge 20, underframe 21, side frame 22,23 is higher, Gu Banmian can bending, can with in the living load of cutting down output be delivered to the installation portion of end.In addition, even in the end, the upper and lower side of side frame 22,23 also leans on the upper ledge 20 or bending part 20f, the 20g of underframe 21, the inner face of 21a, 21b to support, and damages so can prevent the casing outward direction.

In addition, since for make upper ledge 20, underframe 21 relative side frames 22,23 do not relatively move (slip) under the state that engages, carry out fastening, so for the destructive power that acts on the casing above-below direction on upper ledge 20, the underframe 21, owing to by the holding section power is delivered to side frame 22,23, damages so can prevent upper ledge 20 or underframe 21 direction outside casing.

Figure 26 represents to constitute the storage configuration of the part of main box 1.Compare with the welding assembly structure of Figure 31, because can be with the intensive closely keeping of part, so can dwindle the preceding part site of storage of the last assembling of controller switching equipment significantly.

In addition, upper ledge 20 as described above, underframe 21, side frame 22,23 by cutting out making by 1 block of sheet material, just need not weld, and can shorten significantly and make the required time.In addition,, just do not weld fully, apply, make the required time so can further shorten by using the material of coated steel plates, plastic coated steel sheet.

Embodiment 2

Figure 23 is that indication equipment is placed the stereogram that frame 11 is installed in state on the main box 1.Among the figure, the 32, the 33rd, stride across the peristome of picture frame shape plate 24 fronts and the supplementary support member of installing, the 11st, equipment is placed frame, with the state between the bending part 22a, the 23a that stride across side frame 22,23 and back butt, and fixes with bolt 34.In addition, the front side of equipment placement frame 11 is fixed on the supplementary support member 32,33 with bolt 34.As mentioned above, limit with the state that strides across between bending part 22a, the 23a, can provide bigger rigidity diagonal distortion power, the twisting resistance that acts on the main box 1 to transverse direction by placing frame 11 with equipment.

Figure 24 is the stereogram that indication equipment is placed frame 11 outward appearances.It is the metal casing 11a that have opening 11b at equipment discrepancy oral-lateral (front face side of controller switching equipment) that equipment is placed frame 11, and has the guide rail 11C that equipment is come in and gone out and led in the bottom.

Figure 25 is the cutaway view that the U-U direction is seen in Figure 23.The casing 11a back of equipment placement frame 11 contacts with bending part 22a, the 23a of side frame 22,23 and is fastening with bolt 34, is between the side frame 22,23, keeps both reliably with the interval of stipulating.Adopt structure like this,, can need not to reinstall stiffener, thereby can improve the intensity of main box 1 significantly in the inside of main box 1.

Embodiment 3

Figure 26 is another embodiment that expression is equivalent to coniform holding section shown in Figure 22.Among the figure, the 35th, projection is used in engaging, is by sheet material is cut out, forms with the bending vertically of the relative plate face of process for stamping by laser cutting etc.The 36th, the hole that on sheet material, is set as by punching press or laser cutting.Engaging engage with above-mentioned hole 36 with projection 35, by in addition fastening with not shown rivet etc., can prevent 2 plate slide relative, the while can prevent the thickness direction generation component of plate.

Claims (7)

1. distribution box, cording has upper ledge and underframe and left and right sides side frame, is placed with the controller switching equipment that distribution is used in inside, it is characterized in that, have the bending part that makes the both sides that are located at the level board planar portions upper ledge and underframe that fore-and-aft direction prolongs, the cross section is コ word shape to described casing

And contain upper end and bottom up and down in the planar portions of vertical panel, make the bending part that is located at both side ends prolong and form a pair of side frame of rib to the above-below direction of described casing,

The outside, upper end of described side frame and the described bending part inner face side butt of described upper ledge, in addition, the described bending part inner face side butt of outside, the bottom of described side frame and described underframe,

Abutment portion between described upper ledge and the described side frame, between described underframe and the described side frame is fastening by each clamp structure.

2. distribution box as claimed in claim 1, it is characterized in that, have contain parallel planar portions in the casing front, by the picture frame shape plate that listrium constituted that surrounds the one around the described casing front, with clamp structure fastening between upper ledge and the described picture frame shape plate, between underframe and the described picture frame shape plate.

3. distribution box as claimed in claim 1, it is characterized in that, part at the butt of the described side frame of claim 1 and upper ledge or side frame and underframe, be provided with a plurality of holding sections, engaging described side frame and described upper ledge or described side frame and described underframe with described holding section, and, with clamp structure fastening the part of described each butt.

4. distribution box as claimed in claim 3 is characterized in that, the described holding section of claim 3 is chimeric the cone shape recess that is provided with on cone shape protuberance that is provided with on the member of 2 members of butt and the member at another.

5. distribution box as claimed in claim 1, it is characterized in that, side frame has with its upper end and bottom bending and along the casing fore-and-aft direction and prolongs the bending part that forms, the bending part of described upper end and the bending part of lower end respectively with the planar portions medial surface butt of upper ledge and underframe.

6. distribution box as claimed in claim 1 is characterized in that, strides across between a pair of side frame and the equipment that is equipped with on the rib of a pair of side frame is placed frame.

7. distribution box according to claim 1, it is characterized in that in upper ledge, underframe and the side frame, at least 1 has: the cross section of both sides formation parallel to each other is the frame portion of L word shape or コ word shape; Constitute, give interconnected connecting portion with 1 block of sheet material with described frame portion's quadrature setting and to the frame portion of described both sides with described frame portion one.

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