JP2007121552A - Frame component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a frame component which can secure the strength without complicated processing. <P>SOLUTION: The four corners 24K of the folded inner metal sheet 24 overlap the four corners 22K of the folded outer metal sheet 22 and welded at the welding sections 26 to form a closed space 23 of a rectangular cross-section. The outer metal sheet 22 has a first plate section 22X arranged at the side receiving the pressure when used and a second plate section 22Y arranged at the side supporting the pressure when used. The inner metal sheet 24 is made by stacking part of the first plate section 22X and the whole second plate section 22Y. The outer sheet metal 22 and the inner sheet metal 24 receive the large stress on the side receiving the pressure and the side supporting the pressure when used. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a frame constituent member constituting a frame.

  A frame of various apparatuses such as an image forming apparatus (see, for example, Patent Document 1) and a frame of a building support a large weight. For this reason, in a frame, in order to ensure strength, such as bending, steel materials may be applied to a frame constituent member. In such a frame constituent member, a steel material is processed into a rectangular tube shape.

However, with this conventional frame component, complicated processing by a three-dimensional laser processing machine must be performed.
Japanese Patent Laid-Open No. 10-133286

  In view of the above fact, an object of the present invention is to provide a frame constituent member that can ensure strength without complicated processing.

  The frame component of the present invention described in claim 1 is bent into a cross-sectional shape having corners at four corners, and supports the pressure in the use state with the first flat plate portion disposed on the side receiving the pressure in the use state. A first flat plate having a second flat plate portion disposed on the side to be bent, and is folded and overlapped with the first flat plate to form a closed space, and the first flat plate portion and the second flat plate portion It has the 2nd sheet metal which at least partially overlaps with each, and the welding part which welded the said 1st sheet metal and the said 2nd sheet metal, It is characterized by the above-mentioned.

  According to the frame constituent member of the present invention described in claim 1, the first sheet metal and the second sheet metal are overlapped to form a closed space, and when pressure is applied during use, the pressure receiving side and the pressure Since the first sheet metal and the second sheet metal receive a large stress on the side that supports the metal plate, it is not easily deformed.

  According to a second aspect of the present invention, there is provided a frame constituent member according to the first aspect, wherein the first sheet metal and the second sheet metal have a cross-sectional shape in which a rectangular middle portion is missing, The corners of the four corners of the sheet metal are overlapped with the corners of the four corners of the second sheet metal to form a rectangular cross-sectional shape.

  According to the frame constituent member of the present invention described in claim 2, since the corners of the four corners of the first sheet metal are superimposed on the corners of the four corners of the second sheet metal, a rectangular cross-sectional shape is formed. In this case, it is not easily deformed.

  Note that “the corners are overlapped” means that the corners are substantially overlapped, that is, a portion including the corners in the center is overlapped, and a slight amount is provided between the corners. There may be a gap.

  According to a third aspect of the present invention, there is provided the frame constituent member according to the first or second aspect, wherein the first sheet metal and the second sheet metal are bent in a state in which a through hole is formed therethrough. It is characterized by being made.

  According to the frame constituent member of the present invention described in claim 3, the first sheet metal and the second sheet metal are bent after the through hole is formed through in the flat plate stage. Thereby, formation of a through-hole becomes easy.

  According to a fourth aspect of the present invention, there is provided a frame constituent member according to the first aspect, wherein the frame constituting member constitutes a lower frame of the image forming apparatus according to any one of the first to third aspects.

  According to the frame constituent member of the present invention described in claim 4, the frame constituent member constitutes the lower frame of the image forming apparatus and supports the weight acting on the lower frame.

  As described above, according to the frame constituent member of the present invention, there is an excellent effect that strength can be ensured without complicated processing.

  A first embodiment of a frame constituent member in the present invention will be described with reference to the drawings. As shown in FIG. 1, in the present embodiment, the first frame constituent member 20 and the second frame constituent member 30 (30A, 30B) as the frame constituent members are combined to form the lower frame of the image forming apparatus 10. 18 is configured.

  The image forming apparatus 10 is a photographic printer, and includes a printer unit 12 and a processor unit 14. The printer unit 12 converts the digital image data obtained from the outside into an optical signal and performs scanning exposure on the photosensitive material cut to a predetermined length, and the processor unit 14 wet-develops the exposed photosensitive material. It is processed, dried and discharged. In the figure, arrow UP indicates the upward direction in the apparatus installation state, arrow DN indicates the downward direction in the apparatus installation state, arrow FR indicates the forward direction in the apparatus installation state, and arrow RE indicates the backward direction in the apparatus installation state. Show.

  Two first frame constituent members 20 constituting the lower frame 18 are arranged in parallel on the front side (arrow FR direction side) in the apparatus installation state and the rear side (arrow RE direction side) in the apparatus installation state. The printer unit 12 and the processor unit 14 are both supported. As shown in FIGS. 1 and 2, the first frame constituent members 20 are connected to each other by being bridged by a plurality of (three in this embodiment) second frame constituent members 30.

  FIG. 3 is an external perspective view of the first frame constituent member 20 as viewed from the lower side of the apparatus, and FIG. 4 is an external perspective view of the first frame constituent member 20 as viewed from the upper side of the apparatus. As shown in FIGS. 3 and 4, the first frame constituent member 20 has a rectangular tube shape (square pipe shape) as a whole, and the cylinder axis direction (arrow X1 direction) is the longitudinal direction.

  The first frame constituent member 20 is obtained by superposing an outer sheet metal 22 as a first sheet metal and an inner sheet metal 24 as a second sheet metal and welding them at a predetermined interval (see FIG. Marked with a mark). The outer sheet metal 22 and the inner sheet metal 24 are made of steel, and are bent in a state in which the attachment holes 22A and 24A as the through holes are formed to penetrate therethrough.

  As shown in FIG. 5, the outer sheet metal 22 has a cross-sectional shape in which a rectangular one-side intermediate part 22B having corners 22K at the four corners is missing, and the inner sheet metal 24 has corners 24K at the four corners. Each of the rectangular one-side intermediate portions 24B is bent into a cross-sectional shape. Thereby, the open ends 22Z of the outer metal plate 22 are separated from each other, and the open ends 24Z of the inner metal plate 24 are also separated from each other.

  The inner sheet metal 24 is overlapped with the outer sheet metal 22, and the four corners 24K are superimposed on the inner side of the four corners 22K of the outer sheet metal 22, so that the closed space 23 having a rectangular cross section is formed. It is supposed to be formed.

  In the present embodiment, the corner portion 22K and the corner portion 24K are overlapped in a state where the corner portions 22K and 24K are substantially overlapped, that is, the portions including the corner portions 22K and 24K in the center. In this state, there is a very small gap between the corner portion 22K and the corner portion 24K.

  The outer sheet metal 22 includes a first flat plate portion 22X disposed on a side that receives pressure in use (upper side in FIG. 5 (arrow UP direction side)) and a side that supports pressure in use (lower side in FIG. 5 ( And a second flat plate portion 22Y disposed on the arrow DN direction side)). The inner metal plate 24 is overlapped with a part of the first flat plate portion 22X and the entire second flat plate portion 22Y.

  Here, the manufacture of the first frame constituent member 20 will be briefly described. First, predetermined hole processing is performed on the outer sheet metal 22 and the inner sheet metal 24, which are each formed into a flat plate shape, to form the attachment holes 22A and 24A (see FIGS. 3 and 4). Next, the outer sheet metal 22 and the inner sheet metal 24 are bent into a cross-sectional shape (substantially C-shaped in cross section) from which the rectangular one-side intermediate portions 22B and 24B are missing. The processing accuracy at this time may be normal sheet metal processing accuracy (about ± 0.2 mm). Next, the inner sheet metal 24 is inserted inside the outer sheet metal 22 so that the open end 22Z of the outer sheet metal 22 and the open end 24Z of the inner sheet metal 24 are arranged on the opposite side. At this time, the inner surface of the outer sheet metal 22 and the outer surface of the inner sheet metal 24 are in surface contact (strictly, there is a very slight gap). Finally, the outer sheet metal 22 and the inner sheet metal 24 are YAG laser welded at a predetermined interval to form an integrated structure with a substantially rectangular cross section. Thereby, the 1st frame structural member 20 is completed.

  As shown in FIG. 2, the second frame constituent member 30 that connects the first frame constituent members 20 has both ends that connect both end sides of the first frame constituent member 20 in the cylinder axis direction (arrow X1 direction). The second frame constituent member 30 (30B) for connecting the intermediate portion connecting the second frame constituent member 30 (30A) for side connection and the intermediate portions of the first frame constituent member 20 in the cylinder axis direction (arrow X1 direction). )

  The second frame constituent member 30 (30A) for connecting both ends and the second frame constituent member 30 (30B) for connecting intermediate portions have substantially the same configuration, but the second frame constituent members for connecting both ends. 30 (30A) is provided with an overhanging portion 32H for closing the opening end portion 20A (see FIG. 3) of the first frame constituent member 20 in the cylinder axis direction (arrow X1 direction). The second frame constituting member 30 (30B) is different in that the protruding portion 32H is not provided.

  FIG. 7 shows the second frame constituent member 30 (30A) for connecting both ends. The second frame constituent member 30 has a rectangular tube shape (square pipe shape) as a whole, and the tube axis direction (arrow X2 direction) is the longitudinal direction. Similar to the first frame component member 20, the second frame component member 30 includes an outer sheet metal 32 serving as a first sheet metal and an inner sheet metal 34 serving as a second sheet metal, which are overlapped and welded at a welding portion 36 at a predetermined interval. It is a thing. The outer sheet metal 32 and the inner sheet metal 34 are made of steel, and are bent in a state where the attachment holes 32A and 34A as the through holes are formed to penetrate therethrough.

  The outer sheet metal 32 has a cross-sectional shape in which a rectangular one-side intermediate part 32B having corners 32K at the four corners is cut, and the inner sheet metal 34 has a rectangular one-side intermediate part 34B having four corners at the corners 34K. Each of the chipped cross-sectional shapes is bent. Thereby, the open end portions 32Z of the outer sheet metal 32 are separated from each other, and the open end portions 34Z of the inner sheet metal 34 are also separated from each other.

  The inner sheet metal 34 is arranged such that its corners 34K overlap each other inside the corners 32K of the four corners of the outer sheet metal 32, whereby a closed space 33 having a rectangular cross section is formed. In this embodiment, the overlapping state of the corner portion 32K and the corner portion 34K is the same state as the overlapping state of the corner portion 22K and the corner portion 24K described above.

  The outer metal plate 32 is arranged on the first flat plate portion 32X disposed on the side that receives pressure in use (arrow UP direction side in FIG. 7) and on the side that supports pressure in use (arrow DN direction side in FIG. 7). And a second flat plate portion 32Y to be disposed. The inner metal plate 34 is overlapped with a part of the first flat plate portion 32X and the entire second flat plate portion 32Y.

  A projecting portion 32H projects from the outer sheet metal 32 of the second frame constituent member 30 (30A) for connection on both ends in the cylinder axis direction (arrow X2 direction). This projecting portion 32H is shown in FIG. As shown in FIG. 3, the first frame component member 20 is used for closing the opening end 20A (see FIG. 3) in the cylinder axis direction (arrow X1 direction).

  As shown in FIG. 2, end portions of the outer metal plate 32 of the second frame constituent member 30 in the cylinder axis direction (arrow X2 direction) are welded to the outer metal plate 22 of the first frame constituent member 20 at a plurality of locations. (The weld location is indicated by reference numeral 40Y). Further, the protruding portions 32H of the outer sheet metal 32 in the second frame constituent member 30 (30A) for connecting both ends are provided at a plurality of positions on the opening end 20A (see FIG. 3) of the outer sheet metal 22 in the first frame constituent member 20. (The welded part is indicated by reference numeral 40Z).

  As a result, the first frame component member 20 and the first frame component member 20 and the first frame component member 20 are aligned in a state where the cylinder axis direction (arrow X1 direction) of the first frame component member 20 and the cylinder axis direction (arrow X2 direction) of the second frame component member 30 are perpendicular. The two frame constituent members 30 are connected to form the lower frame 18.

  At both ends of the first frame constituent member 20 in the cylinder axis direction (arrow X1 direction), nuts 42 are attached to the inner sheet metal 24 between the open ends 22Z of the outer sheet metal 22 as adjuster bolt attachment parts. A through hole (not shown) penetrating the inner sheet metal 24 in the vertical direction is formed at a position corresponding to the insertion portion of the four nuts 42 in total.

  When the image forming apparatus 10 (see FIG. 1) is installed at an installation location such as a DPE store, an adjuster bolt (not shown) is screwed onto the nut 42. At this time, the shaft portion of the adjuster bolt can pass through the through hole (not shown) of the inner sheet metal 24.

  A caster mounting portion 44 is provided on the inner metal plate 24 between the open ends 22Z of the outer metal plate 22, which are close to the mounting position of the nut 42. As shown in FIG. 6, the caster mounting portion 44 secures a necessary mounting plane by making a part of the outer sheet metal 22 notched. An attachment base portion 46 of a caster 45 (see FIG. 1) is attached to the attachment hole 24A of the caster attachment portion 44. The caster 45 (see FIG. 1) is attached to the first frame constituent member 20 via the attachment base portion 46, so that the image forming apparatus 10 can be moved by the caster 45 as shown in FIG. Become.

  As shown in FIG. 2, a rectangular hole 24 </ b> C for wiring penetrates the first frame constituent member 20 on the rear side (arrow RE direction side) of the apparatus installation state at a position near the caster mounting portion 44 in the inner sheet metal 24. The rectangular hole 24 </ b> C is formed and serves as an entrance / exit for power wiring and the like passing through the first frame constituent member 20.

  Next, the operation of the above embodiment will be described.

  As shown in FIG. 1, the weights of the printer unit 12 and the processor unit 14 of the image forming apparatus 10 are supported by the lower frame 18. When the weight of the printer unit 12 and the processor unit 14 acts in the installed state, as shown in FIGS. 3 to 5 and 7, the pressure receiving side (arrow UP direction side) and the pressure supporting side (arrow DN) Since the outer side metal plates 22 and 32 and the inner side metal plates 24 and 34 receive a large stress on the direction side), the lower frame 18 (see FIG. 1) is not easily deformed.

  In particular, in the present embodiment, the first frame constituting member 20 and the second frame constituting member 30 are provided with the four corners 24K and 34K of the inner metal plates 24 and 34 on the four corners 22K and 32K of the outer metal plates 22 and 32, respectively. Since the closed spaces 23 and 33 (rectangular cross-sectional shape) are overlapped to form a double structure at all corners and most of the flat plate portions, the section modulus is increased.

  Further, after the outer sheet metals 22, 32 and the inner sheet metals 24, 34 are bent, the outer sheet metals 22, 32 and the inner sheet metals 24, 34 are slightly in the longitudinal direction as shown in the schematic diagram of FIG. (E.g., 0.3 mm or less) warp occurs (in the schematic diagram of FIG. 8, the warp state is shown by an extreme warp amount for easy understanding), but inside the outer metal plates 22 and 32, Since the inner metal plates 24 and 34 are arranged to cancel out the warpage, the dimensional accuracy of the first frame constituent member 20 and the second frame constituent member 30 shown in FIG. 2 is improved.

  Further, the outer metal plates 22, 32 and the inner metal plates 24, 34 are bent after the mounting holes 22A, 32A, 24A, 34A are formed through in the flat plate stage, so that the mounting holes 22A, 32A, 24A, 34A are formed. And the positional accuracy error in the state where the first frame constituent member 20 and the second frame constituent member 30 are connected is small.

  Furthermore, the cross-sectional shapes of the first frame component member 20 and the second frame component member 30 are rectangular (substantially rectangular), so that a unit mounting through-hole, an apparatus lower caster and an adjuster are installed. Positional restrictions on the parts and the like can be reduced.

  Next, 2nd Embodiment of a frame structural member is described based on FIG.

  The frame structural member 50 shown in FIG. 9 is formed by superposing an outer sheet metal 52 as a first sheet metal and an inner sheet metal 54 as a second sheet metal and welding them at a predetermined interval (the welded portion 56 is indicated by a cross mark). 2) Two rectangular tube-like closed spaces 53 are formed, and the tube axis direction is the longitudinal direction. The outer sheet metal 52 and the inner sheet metal 54 are made of a steel material, and are bent in a state in which a through hole (not shown) is formed through.

  The outer sheet metal 52 has a cross-sectional shape in which one side intermediate part 52B having a shape with corners 52K at the four corners is missing, and the intermediate part of the outer sheet metal 52 is recessed inside the range surrounded by the corners 52K. It is bent into a cross-sectional shape that is a recess 52C. Further, the inner sheet metal 54 has a cross-sectional shape in which one side intermediate part 54B having a corner part 54K at the four corners is cut out, and the inner part of the inner sheet metal 54 is inside the range surrounded by the corner part 54K. It is bent into a cross-sectional shape that is a recessed portion 54C. Thereby, the open end portions 52Z of the outer sheet metal 52 are separated from each other, and the open end portions 54Z of the inner sheet metal 54 are also separated from each other.

  The inner sheet metal 54 is arranged such that the corners 54K of its four corners overlap each other inside the corners 52K of the four corners of the outer sheet metal 52, thereby forming a closed space 53 having two rectangular cross-sectional shapes. It has become. In the present embodiment, the overlapping state of the corner 52K and the corner 54K is the same as the overlapping state of the corner 22K and the corner 24K (shown in FIG. 5) in the first embodiment. It has become.

  The outer sheet metal 52 shown in FIG. 9 includes a first flat plate portion 52X disposed on the side that receives pressure in the use state (the upper side in FIG. 9 (the arrow UP direction side)), and the side that supports pressure in the use state (see FIG. 9). 9 includes a second flat plate portion 52Y disposed on the lower side (arrow DN direction side). The inner sheet metal 54 is overlapped with a part of the first flat plate portion 52X and the entire second flat plate portion 52Y.

  A nut 58 is attached to the recess 54 </ b> C of the inner sheet metal 54. A through hole (not shown) that penetrates the inner sheet metal 54 and the outer sheet metal 52 in the vertical direction is provided at a position corresponding to the insertion portion of the nut 58. ) Is formed through. The through hole (not shown) is formed through in a flat plate stage before the inner sheet metal 54 and the outer sheet metal 52 are bent.

  Thus, by providing the recess 54C in the inner sheet metal 54, the nut 58 can be embedded in the frame constituent member 50, so that an adjuster bolt (not shown) is screwed into the nut 58 as in the first embodiment. In this case, it is possible to reduce the restrictions in the height direction (arrow UP direction, arrow DN direction).

  The frame constituent member 50 described above can be applied to the lower frame 18 and the like of the image forming apparatus 10 shown in FIG.

  Next, a third embodiment of the frame constituent member will be described with reference to FIG.

  The frame constituent member 60 shown in FIG. 10 has a rectangular tube shape as a whole, and the cylinder axis direction is the longitudinal direction. In the frame component 60, an outer sheet metal 62 as a first sheet metal and an inner sheet metal 64 as a second sheet metal are overlapped and welded at a predetermined interval (a welding portion 66 is indicated by a cross), and the inner sheet metal 64 is also attached. A plate-shaped reinforcing sheet metal 65 is welded (at a welding point 67 (a point indicated by a cross) in FIG. 10). The outer sheet metal 62 and the inner sheet metal 64 are made of steel, and are bent in a state in which attachment holes (not shown) as through holes are formed to penetrate.

  The outer sheet metal 62 is bent into a cross-sectional shape in which a rectangular one-side intermediate part 62B having corners 62K at four corners is cut, and the open end parts 62Z of the outer sheet metal 62 are separated from each other. Yes. Further, the inner sheet metal 64 is bent into a rectangular wave-shaped cross-sectional shape, and is overlapped with the outer sheet metal 62 to form a closed space 63.

  The outer metal plate 62 includes a first flat plate portion 62X disposed on the side that receives pressure in the use state (upper side (arrow UP direction side in FIG. 10)), and a side that supports pressure in the use state (lower side in FIG. 10 ( And a second flat plate portion 62Y disposed on the arrow DN direction side)). The inner sheet metal 64 is overlapped with a part of the first flat plate part 62X and a part of the second flat plate part 62Y.

  Further, in the inner sheet metal 64, the plate part 64 </ b> A disposed on the side that supports pressure in use (lower side in FIG. 10 (arrow DN direction side)) is disposed between the open ends 62 </ b> Z of the outer sheet metal 62. The reinforcing sheet metal 65 is overlapped on both end portions.

  A nut 68 is attached to the reinforcing sheet metal 65, and a through hole (not shown) penetrating the reinforcing sheet metal 65 in the vertical direction is formed at a position corresponding to the insertion portion of the nut 68. . An adjuster bolt (not shown) can be screwed onto the nut 68 as in the first embodiment.

  The frame constituent member 60 described above can be applied to the lower frame 18 and the like of the image forming apparatus 10 shown in FIG.

  In the frame component 60 of the present embodiment, the side receiving pressure in the usage state (upper side in FIG. 10 (arrow UP direction side)) and the side supporting pressure in the usage state (lower side in FIG. 10 (arrow DN direction side)). ), The double structure portion is large, and between them, six support plate portions extending in the direction in which pressure acts (the same direction as the arrow DN direction) are arranged, A very large bending strength can be secured.

  In the first to third embodiments, the case where the frame constituent members (20, 30, 50, 60) are applied to the lower frame 18 of the image forming apparatus 10 has been described. The present invention may be applied to other frames such as a frame of various apparatuses other than a forming apparatus, a frame of a machine, or a frame of a building.

It is a schematic perspective view which shows the lower frame to which the frame structural member which concerns on the 1st Embodiment of this invention is applied. It is an external appearance perspective view which shows the lower frame to which the frame structural member which concerns on the 1st Embodiment of this invention is applied seeing from the apparatus downward direction. It is an external appearance perspective view which shows the 1st frame structural member in the 1st Embodiment of this invention in the state seen from the apparatus downward direction. It is an external appearance perspective view which shows the 1st frame structural member in the 1st Embodiment of this invention in the state seen from the apparatus upper direction. It is a longitudinal cross-sectional view which shows the 1st frame structural member in the 1st Embodiment of this invention (it corresponds to the 5-5 line cross section of FIG. 4). It is a top view which shows the caster attaching part of the 1st frame structural member in the 1st Embodiment of this invention. It is an external appearance perspective view which shows the 2nd frame structural member in the 1st Embodiment of this invention in the state seen from the apparatus downward direction. It is a schematic diagram which shows the curvature state of the outer side metal plate and inner side metal plate in the 1st Embodiment of this invention (it shows with the amount of extreme curvature in order to show a curvature state intelligibly). It is a longitudinal cross-sectional view which shows the frame structural member in the 2nd Embodiment of this invention. It is a longitudinal cross-sectional view which shows the frame structural member in the 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Image forming apparatus 18 Lower frame 20 1st frame structural member (frame structural member)
22 Outer sheet metal (first sheet metal)
22A Mounting hole (through hole)
22K Corner portion 22X First flat plate portion 22Y Second flat plate portion 23 Closed space 24 Inner sheet metal (second sheet metal)
24A Mounting hole (through hole)
24K corner portion 26 welded portion 30 second frame constituent member (frame constituent member)
32 Outer sheet metal (first sheet metal)
32A Mounting hole (through hole)
32K corner portion 32X first flat plate portion 32Y second flat plate portion 33 closed space 34 inner sheet metal (second sheet metal)
34A Mounting hole (through hole)
34K Corner portion 36 Welded portion 50 Frame component 52 Outer sheet metal (first sheet metal)
52K Corner portion 52X First flat plate portion 52Y Second flat plate portion 53 Closed space 54 Inner metal plate (second metal plate)
54K Corner portion 56 Welded portion 60 Frame component 62 Outer sheet metal (first sheet metal)
62K Corner portion 62X First flat plate portion 62Y Second flat plate portion 63 Closed space 64 Inner sheet metal (second sheet metal)
66 Welded part

Claims (4)

Folded into a cross-sectional shape with corners at the four corners, and provided with a first flat plate portion arranged on the side receiving pressure in use and a second flat plate portion arranged on the side supporting pressure in use The first sheet metal,
A second sheet metal that is bent and overlapped with the first sheet metal to form a closed space, and at least a part of each of the first plate part and the second plate part is overlapped;
A welded portion welding the first sheet metal and the second sheet metal;
A frame constituent member characterized by comprising:   The first sheet metal and the second sheet metal have a cross-sectional shape in which a rectangular one-side middle part is cut off, and the corners of the four corners of the second sheet metal are superposed on the corners of the four corners of the first sheet metal. The frame constituent member according to claim 1, wherein the frame constituent member has a shape.   3. The frame component according to claim 1, wherein the first sheet metal and the second sheet metal are bent in a state in which a through hole is formed to penetrate therethrough.   The frame constituent member according to any one of claims 1 to 3, wherein the frame constituent member constitutes a lower frame of the image forming apparatus.

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