JP2007306652A - Cable rack cover and manufacturing method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cable rack cover that is increased in the strength of the cable rack cover, without the need for large-scaled equipment, and preventing warpages and deformations of the end of the cover, and to provide its manufacturing method. <P>SOLUTION: A cover body 1 which lids the upper part of a cable rack P is arranged. A flange 2 that locks to the external side face of a main girder P1 of the cable rack P is installed at the cover body 1. Furthermore, an abutting end 3, which makes the adjacent cable rack covers abut against each other, is formed. A substantially linear reinforcing bead 4, which protrudes on the upper face of the cover body 1 along the vicinity of the abutting end 3 of the cover body 1, is formed. An external corrugation pressing bead 5, along the longitudinal direction of the reinforcing bead 4, is arranged between the reinforcing bead 4 and the abutting end 3 outside the reinforcing bead 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cable rack cover that is continuously disposed on an upper opening portion of a cable rack in order to cover the cable rack.

  A cable rack cover used for protecting the cables in the cable rack may be used to prevent dust, dirt, rainwater, and the like from entering the cable rack. At this time, when a plurality of cable rack covers are arranged, if a gap occurs between the covers, rainwater, dust, or the like enters through the gap. In particular, cable rack covers made of metal plates are prone to bend due to their own weight and distortion during processing. There was a possibility that a gap might be generated.

  Therefore, conventionally, various means for eliminating such a gap between the cable rack covers have been adopted. For example, the use of a deflection preventing tool that supports the lower surface of the cable rack cover. The deflection preventing tool attempts to reduce the gap between the end portions.

  In addition, a means for increasing the strength of the cable rack cover itself to prevent such bending and distortion has been proposed. For example, the cover described in Patent Document 1 is formed by forming a reinforcement launching portion that is substantially orthogonal to the main girder of the cable rack in the cover main body portion. This reinforcement launching portion increases the strength of the cover itself and makes it difficult for the cover to be bent or distorted.

On the other hand, the cable rack cover described in Patent Document 2 is provided with a protrusion ridge extending substantially along the width direction on the flat upper surface of the cover main body, and the ridge protrusion on the cover main body. It is arranged near both end edges. In this cover, rainwater flowing on the upper surface of the cover body toward both end edges is blocked by the both ridges, and drained drainage is removed from the upper surface to both sides, and between the edges that are opposed to each other in the longitudinal direction. It does not reach the generated gap, but prevents the rainwater and dust from entering the cable rack.
Japanese Utility Model Publication No. 1-143322 JP 2004-173344 A

  In order to increase the strength of the cable rack cover, the following problems remain in the cable rack cover provided with the reinforcement projecting portion and the ridges. In the reinforcement launching portion described in Patent Document 1, a number of reinforcement launching portions are formed on the entire surface of the cover in order to increase the strength. However, since the cover for the cable rack is originally provided by pressing a metal plate having a large area, it is necessary to increase the press load in order to form a large number of reinforcing punches on such a metal plate. . Therefore, in order to mold this type of cover, large-scale equipment has been required.

  On the other hand, in the case where rainwater on the upper surface of the cover body is blocked by the ridges described in Patent Document 2, by providing the ridges provided in the vicinity of the end of the cover, the end of the cover is likely to be distorted. It is to become. That is, in Patent Document 2, since the rainwater is dammed using the height of the ridges protruding upward from the cover body, it is necessary to provide the ridges as close to the end of the cover body as possible. Therefore, it is most effective to bend the damming ridges into a substantially L-shaped side surface and attach these damaging ridges together. However, when the ridges are formed by drawing, deformation due to press stress called wrinkles occurs at the end of the cover body. As a result, the end of the cover is distorted. Outside of the ridges, not only is it easy for dust and rainwater to enter from the distorted cover body, but it is difficult to commercialize such a structure. .

  Therefore, the present invention was created to solve the above-mentioned problems, and it is possible to increase the strength of the cable rack cover without requiring a large-scale facility, and to prevent distortion and deformation of the cover end. The object is to provide a rack cover and a method for manufacturing the same.

  In order to achieve the above-mentioned object, the first means in the present invention is a cable rack cover that covers the opened upper portion of the cable rack P, a flange 2 that is locked to the outer surface of the main beam P1 of the cable rack P, and A cover body 1 having an abutting end portion 3 to be attached to an adjacent cable rack cover is provided, and a substantially linear reinforcement projecting on the upper surface of the cover body 1 along the vicinity of the abutting end portion 3 of the cover body 1. A bead 4 is formed, and an outer heel presser bead 5 along the longitudinal direction of the reinforcing bead 4 is provided outside the reinforcing bead 4 between the reinforcing bead 4 and the butt end 3.

  The reinforcing beads 4 of the second means are provided one by one or a plurality of left and right along the butt end 3 of the cover body 1, and cover the right and left reinforcing beads 4 in addition to the outer heel holding beads 5. Inside the reinforcing bead 4 located on the innermost side of the body 1, an inner heel holding bead 6 is provided along the longitudinal direction of the reinforcing bead 4, and the outer heel pressing bead 5 and the inner heel pressing bead 6 An appropriate number of reinforcing beads 4 projecting in the vicinity of the butting end 3 are disposed so as to sandwich both of them.

  The third means is to cover the open upper part of the cable rack P, and to connect the flange 2 that is locked to the outer surface of the main beam P1 of the cable rack P and the butt end 3 that is attached to the adjacent cable rack cover. In the manufacturing method of the cable rack cover, the cover body 1 is provided, and a substantially linear reinforcing bead 4 protruding from the upper surface of the cover body 1 along the vicinity of the butted end 3 of the cover body 1 is press-molded. When the reinforcing beads 4 provided in the vicinity of the butt end 3 are simultaneously press-molded, a pair of outer heel presser beads 5 arranged so as to sandwich the left and right reinforcing beads 4 from the outside are press-molded, and then the cover body 1 is a manufacturing method in which the flange 2 is press-molded.

  The fourth means is to cover the open upper part of the cable rack P, and to connect the flange 2 to be locked to the outer surface of the main beam P1 of the cable rack P, and the butt end 3 to be attached to the adjacent cable rack cover. In the manufacturing method of the cable rack cover for press-forming the cover body 1 having the same, each time an appropriate number of reinforcement beads 4 provided in the vicinity of the right and left butt ends 3 are separately press-formed, along the outside of the reinforcement beads 4. An appropriate number of reinforcing beads, each of which includes an outer side presser bead 5 and an inner side presser bead 6 along the longitudinal direction of the reinforcing bead 4 further inside the reinforcing bead 4 positioned on the innermost side of the cover body 1. 4 is press-molded so that both sides are sandwiched from each other, and reinforcing beads 4 are provided on the left and right sides of the cover body 1, and then the flange 2 is press-molded on the cover body 1.

  The fifth means is a means for solving the problem of press molding the outer heel presser beads 5 so as to be arranged between the reinforcing beads 4 as well.

  According to claim 1 of the present invention, the reinforcing bead 4 provided in the vicinity of the butt end portion 3 can be efficiently reinforced, and the reinforcing bead 4 is formed on the entire surface of the cover body 1 like a conventional reinforcing punched-out portion. It is no longer necessary to provide In addition, by providing the outer heel presser bead 5 along the longitudinal direction of the reinforcing bead 4 between the reinforcing bead 4 and the butt end 3 on the outer side of the reinforcing bead 4, the cover body 1 with less pressing force. It is possible to reinforce the butt end 3 of the. As a result, the strength of the cable rack cover can be increased without requiring a large facility. In addition, the action of the outer heel presser bead 5 can prevent the butt end 3 from being distorted or deformed, so that when the butt ends 3 of the adjacent cover bodies 1 are brought into contact with each other, like the conventional damping ridges. There is no possibility that a gap will be generated, and rainwater or the like can be reliably prevented from entering.

  According to the second aspect of the present invention, an appropriate number of reinforcing beads 4 projecting in the vicinity of the abutting end portion 3 between the outer heel presser bead 5 and the inner heel presser bead 6 are disposed so as to sandwich the both sides of the reinforcing bead 4. Even if the number is increased, it is possible to prevent the cover body 1 and the butted end 3 from being deformed by the minimum outer heel presser bead 5 and inner heel presser bead 6.

  According to the manufacturing method of the third aspect, when the reinforcing beads 4 provided in the vicinity of the right and left butt end portions 3 are simultaneously press-formed, the most rational outer heel presser bead 5 can be formed.

  According to the manufacturing method of the fourth aspect, when the reinforcing beads 4 provided in the vicinity of the right and left butt end portions 3 are separately press-molded, the most rational outer heel presser bead 5 can be molded.

  In the manufacturing method of the fifth aspect, the strength of the cable rack cover can be maximized by press-molding the outer heel presser beads 5 so as to be disposed between the reinforcing beads 4.

  As described above, according to the present invention, there are various effects such as increasing the strength of the cable rack cover without requiring a large-scale facility and preventing distortion and deformation of the cover end. .

  In the best mode of the present invention cover, the cover body 1 is provided with a flange 2 that is locked to the outer surface of the main beam P1 of the cable rack P and an abutting end 3 that abuts the adjacent cable rack cover. A substantially linear reinforcing bead 4 protruding from the upper surface of the cover body 1 along the vicinity of the butted end portion 3 of the cover body 1 is formed along the butted end portion 3 one by one on the left or right side. Outside the reinforcing bead 4, an outer flange pressing bead 5 is provided between the reinforcing bead 4 and the butted end 3 along the longitudinal direction of the reinforcing bead 4. On the inner side of the reinforcing bead 4 located on the innermost side of the cover body 1, an inner heel holding bead 6 is provided along the longitudinal direction of the reinforcing bead 4. By arranging the appropriate number of reinforcing beads 4 projecting in the vicinity of the butt end portions 3 with the outer heel presser beads 5 and the inner heel presser beads 6, the original purpose is achieved. Is achieved.

  An embodiment of the present invention will be described below. The cover of the present invention is a cover for the cable rack P that covers the open upper portion of the cable rack P, and is formed by press-molding the flange 2 and the butt end 3 on the metal plate-like cover body 1.

  The cover body 1 is formed into a flat rectangular shape or a shape that fits the opening of the cable rack P, and the flange 2 that is locked to the outer surface of the main beam P1 of the cable rack P and the adjacent cable rack P are attached to each other. And a butt end 3 that eliminates the gap between the continuous portions.

  In the vicinity of the butted end 3 of the cover body 1, a substantially linear reinforcing bead 4 protruding from the upper surface of the cover body 1 is formed. The reinforcing beads 4 are provided on the left and right sides or a plurality of the reinforcing beads 4 along the butt end 3 to increase the strength of the cover body 1, particularly the strength around the butt end 3. The number of reinforcing beads 4 can be arbitrarily selected according to the size of the cover body 1. For example, the reinforcing body 4 having a relatively small size is formed with one reinforcing bead 4 on each of the left and right sides of the cover body 1, On the other hand, the cover body 1 having a large size is preferably increased or decreased depending on the size of the cover body 1 so that a plurality of reinforcing beads 4 are formed on the left and right.

  When this reinforcing bead 4 is press-molded, the outer heel presser bead 5 and the inner heel presser bead 6 are selectively formed along the reinforcing bead 4. That is, the outer heel presser bead 5 is a heel presser bead provided outside the reinforcing bead 4 and between the reinforcing bead 4 and the butt end 3. On the other hand, the inner heel presser bead 6 is a heel presser bead provided further inside the reinforcing bead 4 positioned on the innermost side of the cover body 1. Any heel presser bead is provided along the longitudinal direction of the reinforcing bead 4 to prevent deformation remaining in the flat surface portion of the cover body 1 when the reinforcing bead 4 is press-molded.

  Depending on the size of the cover body 1, the method of forming the reinforcing beads 4 may be different. For example, when press-molding the cover body 1 having a small size, the reinforcement beads 4 on the left and right of the cover body 1 can be press-molded simultaneously. In this case, it is not necessary to form the inner side presser bead 6, and pressure deformation generated in the cover body 1 can be prevented only by forming a pair of outer side presser beads 5 on the left and right. In general, a bead called a squeeze bead that adjusts the tension of the narrowing portion is used when forming the narrowing with a mold, and this narrowing bead needs to be disposed around the narrowing portion. On the other hand, the outer heel presser bead 5 of the present invention is arranged so as to sandwich the reinforcing bead 4 from both sides, thereby preventing deformation remaining in a flat portion comparable to that of a conventional aperture bead.

  On the other hand, when the size of the cover body 1 is increased, there is a method in which an appropriate number of reinforcing beads 4 provided in the vicinity of the right and left butt end portions 3 are separately press-molded. In this case, the outer heel presser bead 5 along the outer side of the reinforcing bead 4 and the inner heel presser bead 6 along the inner side of the reinforcing bead 4 are press-molded so as to sandwich the reinforcing bead 4 therebetween. is there. At this time, it is also possible to press-mold the outer heel presser beads 5 so as to be disposed between the reinforcing beads 4 (not shown).

  After the reinforcing bead 4 is formed on the cover body 1, the flange 2 is press-formed on the cover body 1. Thus, since the cover body 1 in which the reinforcing bead 4 is formed has high strength, even when the flange 2 is formed, the cover body 1 can be prevented from being deformed or distorted. Can be molded.

  The process of providing the reinforcing beads 4 and the eaves holding beads 5 on the cover body 1 is performed by press molding between a lower mold and an upper mold (not shown). At this time, a stripper is disposed between the lower mold and the upper mold, and the reinforcing bead 4 is formed on the cover body 1 on the stripper with a punch penetrating the stripper from the lower mold. At this time, a protrusion for pressing the side hook is provided on the upper surface of the stripper, and this protrusion is pressed against the cover body 1 to mold the outer hook pressing bead 5 and the inner hook pressing bead 6. On the other hand, a spring is interposed between the lower surface of the stripper and the lower die, and the stripper is pressed in the direction of the cover body 1 by this spring to fix the cover body 1, and as described above, the stripper is moved from the lower die. A reinforcing bead 4 is formed on the cover body 1 on the stripper by a projection penetrating through the stripper.

  The present invention is not limited to the illustrated example. The design of the shape of the cover body 1 and the shape, size, number, etc. of the reinforcing beads 4 and the depths of the outer and inner heel presser beads 5 and 6 can be changed. Changes such as the sheath length can be arbitrarily made according to the shape and dimensions of the cover body 1 and can be freely changed without departing from the scope of the present invention.

It is a top view which shows one Example of this invention. It is an arrow AA line expanded end elevation shown in FIG. It is a principal part disassembled perspective view which shows the use condition of this invention. It is a top view which shows the other Example of this invention.

Explanation of symbols

P Cable rack P1 Master girder 1 Cover body 2 Flange 3 Butt end 4 Reinforcement bead 5 Outer side presser bead 6 Inner side presser bead

Claims (5)

  A cover for a cable rack that covers an open upper portion of a cable rack, wherein the cover body has a flange that is locked to the outer surface of the main beam of the cable rack, and a butt end that abuts the adjacent cable rack cover. Forming a substantially linear reinforcing bead that protrudes from the upper surface of the cover body along the vicinity of the butted end portion of the cover body, and between the reinforcing bead and the butted end portion outside the reinforcing bead A cable rack cover, characterized in that an outer heel presser bead along the longitudinal direction of the cable rack is provided.   One or a plurality of reinforcing beads are provided along the butted end of the cover body. Each reinforcing bead includes a reinforcing bead positioned on the innermost side of the cover body in each of the left and right reinforcing beads. Further, on the inner side, an inner side presser bead along the longitudinal direction of the reinforcing bead is provided, and an appropriate number of reinforcing beads protruding in the vicinity of the right and left butt end portions by the outer side presser bead and the inner side presser bead, The cable rack cover according to claim 1, wherein both are arranged so as to sandwich the both.   A cover body is provided having a flange that engages the outer surface of the main rack of the cable rack and a butt end that abuts the adjacent cable rack cover. In a method for manufacturing a cable rack cover that press-forms a substantially linear reinforcing bead that protrudes from the top surface of the cover body along the vicinity of the butted end of the cover, when the reinforcing beads provided near the left and right butted ends are simultaneously press-molded. A method for manufacturing a cover for a cable rack, comprising: press-molding a pair of outer flange pressing beads arranged so as to sandwich the reinforcing beads on the left and right of the cover body from the outside, and then press-molding a flange on the cover body.   A cover for a cable rack that presses a cover body that has a flange that engages with the outer surface of the main rack of the cable rack and a butt end that abuts the adjacent cable rack cover. In this manufacturing method, each time an appropriate number of reinforcing beads provided in the vicinity of the left and right butt ends are separately press-molded, the outer heel presser beads along the outer side of the reinforcing beads and the innermost side of the cover body are positioned. Inside the reinforcing bead, press molding is performed so that each appropriate number of reinforcing beads are sandwiched from both sides of the reinforcing bead along the longitudinal direction of the reinforcing bead, and reinforcing beads are provided on the left and right sides of the cover body. After that, a method for manufacturing a cover for a cable rack, wherein a flange is press-molded on the cover body. The manufacturing method of the cover for cable racks of Claim 4 which press-molds the said outer side collar pressing bead so that it may distribute also between reinforcement beads.

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