JP3962494B2 - Case, manufacturing method thereof, and device using the case - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a casing, a manufacturing method thereof, and a device using the casing.
[0002]
[Prior art]
A casing having a predetermined strength is used in various office equipment, electronic equipment, electrical equipment, and various equipment such as mechanical devices. The casing is provided with a bottom plate. The bottom plate is placed or fixed on the installation surface to use the device in an immobile state.
[0003]
As shown in the external perspective view of the housing 200 in FIG. 14, the conventional housing is box-shaped, and is used as a housing for various OA equipment, electronic and electrical equipment such as communication equipment, and mechanical equipment. .
[0004]
For this purpose, the housing 200 is configured as a structure made of various housing frame materials including sheet metal and pipe materials.
[0005]
Specifically, the side plates 201 and 202, the top plate 204, the bottom plate 205, the support column 203, the various stays 206, and the various reinforcing plates 207 are fixed and assembled by fastener means such as welding or screws or caulking as shown in the figure. Configured. Further, the support member 300 that directly contacts the installation surface is fixed to the bottom plate 205 so that the height can be adjusted appropriately.
[0006]
[Problems to be solved by the invention]
On the other hand, office devices such as current color printers and color copiers have increased demands for higher image quality and stability of paper transportability, and maintain mechanical accuracy in copying and printing processes and paper transport processes. Ensuring the strength of the chassis, which is the foundation, is important.
[0007]
However, at the same time, in the office machine described above, the casing is required to have a thin and lightweight structure from the viewpoint of cost. Therefore, a lightweight and inexpensive casing that satisfies the standards is prepared, and a predetermined device is built in the casing to perform an evaluation test. In this evaluation test, it is considered that the strength test of the housing related to the degree of influence on the image quality meets the standard for the office machine alone, but if it is installed on an uneven installation surface at the site actually used by the user, The ground distribution of the support member of the housing changes, or the load distribution held by the support member 300 changes due to the addition of an optional unit such as a document feeder or a pedestal.
[0008]
As a result, the bottom plate 205 is distorted and the entire housing is deformed, leading to deterioration of mechanical accuracy due to tilting of the built-in device, etc., resulting in a problem of image quality deterioration and paper transportability deterioration. It was.
[0009]
For this reason, the thickness and weight of the bottom plate 205 of the conventional housing are inevitably increased, resulting in an increase in cost and weight.
[0010]
Therefore, the present invention has been made in view of the above circumstances, and when a relatively heavy device is placed on an uneven installation surface or when another optional unit is added, For the purpose of providing a housing that can minimize the deformation of the housing and solve various problems caused by the deformation, a manufacturing method thereof, and a device using the housing by increasing the strength of the bottom plate. Yes.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, there is provided a housing for fixing a structure on a bottom plate and incorporating a predetermined device, wherein the bottom plate has a plurality of supports for supporting a load. In order to provide a member, a first bottom plate formed with a plurality of first drawn portions to be drawn at a predetermined length and height, the first drawn portion, and an edge of the first bottom plate, It is characterized in that it is formed by a second bottom plate which is made into a double bottom by being fixed by a fixing means including welding.
[0012]
In addition, the bottom plate is formed in a rectangular shape, and the first drawing portion is formed in a convex shape toward the second bottom plate along the vicinity of the edge of the four sides.
[0013]
Further, the first bottom plate is formed in a box shape having a first wall surface formed at a substantially right angle from the edge portion, and the first shape is formed in a box shape having a second wall surface formed at a substantially right angle from the edge portion. 2 bottom plates are formed, and the first wall surface and the second wall surface are fixed by the fixing means.
[0014]
In addition, the first bottom plate is formed so as to have a box shape having a first wall surface formed at a substantially right angle from the edge and a first flange portion extending at a substantially right angle from the first wall surface. The second bottom plate is formed to have a box shape having a second wall surface formed at a substantially right angle from the edge and a second flange portion extending at a substantially right angle from the second wall surface. In addition, the first collar part and the second collar part are fixed by the fixing means.
[0015]
Further, the first drawn portion is formed so as to be along the vicinity of the edges of the two opposite sides of the first bottom plate, and in the vicinity of the edges of the two opposite sides of the second bottom plate. A second drawn portion is formed so as to be orthogonal to the first drawn portion, and the first drawn portion, the second drawn portion, the first bottom plate, and the first It is characterized by fixing between the edges of two bottom plates with fixing means including welding.
[0016]
In addition, the bottom plate is formed in a rectangular shape, and the first drawn portion is directed toward the second bottom plate so as to be along the vicinity of the edge of the four sides, and is approximately half the thickness of the bottom plate. In addition, the second drawn portion is projected toward the first bottom plate at a height approximately half the thickness of the bottom plate so as to follow the vicinity of the edge of the four sides. And fixing between the first drawing portion, the second drawing portion, the first bottom plate, and the edge of the second bottom plate with fixing means including spot welding. It is characterized by.
[0017]
Further, the third drawing portion dedicated for providing the support member is formed to be convex toward the second bottom plate.
[0018]
Further, the first bottom plate and the second bottom plate are obtained by pressing a plate material having a predetermined thickness including a cold-rolled iron plate material.
[0019]
Further, the support member is an adjuster having a height adjusting function.
[0020]
A method of manufacturing a housing for fixing a structure on a bottom plate and incorporating a predetermined device, wherein the first base plate is drawn at a predetermined length and height. A first bottom plate formed with a processed portion, and the first drawn portion and the edge of the first bottom plate are fixed by a fixing means including spot welding to form a double bottom. And a plurality of support members for supporting a load in the first drawing portion.
[0021]
Further, in the housing manufacturing method, the bottom plate is formed in a rectangular shape, and the first drawn portion is formed in a convex shape toward the second bottom plate along the vicinity of the edge of the four sides. It is characterized by doing.
[0022]
Moreover, in the manufacturing method of a housing | casing, the said 1st bottom plate is formed in the box shape which has a 1st wall surface formed at a substantially right angle from an edge, and the 2nd wall surface formed at a substantially right angle from an edge The second bottom plate is formed in a box shape having, and the first wall surface and the second wall surface are fixed by the fixing means.
[0023]
Further, in the housing manufacturing method, a box shape having a first wall surface formed at a substantially right angle from the edge portion and a first flange portion extending at a substantially right angle from the first wall surface is formed. Forming the first bottom plate so as to have a box shape having a second wall surface formed at a substantially right angle from the edge and a second flange portion extending at a substantially right angle from the second wall surface. The second bottom plate is formed, and the first flange portion and the second flange portion are fixed by the fixing means.
[0024]
Moreover, in the manufacturing method of a housing | casing, the said 1st drawing process part is formed so that the vicinity of the edge part of the 2 sides which the said 1st bottom plate opposes may be formed, and 2 A second drawing portion is formed so as to be orthogonal to the first drawing portion along the vicinity of the edge of the side, and the first drawing portion, the second drawing portion, and the The first bottom plate and the edge of the second bottom plate are fixed by fixing means including welding.
[0025]
Further, in the manufacturing method of the housing, the bottom plate is formed in a rectangular shape, and the thickness of the bottom plate is set so that the first drawn portion is directed toward the second bottom plate along the vicinity of the edge of the four sides. It is formed in a convex shape with a height of approximately half of the height, and the second drawn portion is directed toward the first bottom plate so as to be along the vicinity of the edge of the four sides. It is formed in a convex shape with approximately half the height, and includes welding between the edge of the first drawn portion, the second drawn portion, the first bottom plate, and the second bottom plate. It is characterized by being fixed by a fixing means.
[0026]
Further, in the method for manufacturing a housing, a dedicated third drawn portion for providing the support member is formed in a convex shape toward the second bottom plate.
[0027]
In the housing manufacturing method, the first bottom plate and the second bottom plate are obtained by pressing a plate material having a predetermined thickness including a cold-rolled iron plate material.
Further, in the housing manufacturing method, the structure is assembled from a metal mold containing iron, the bottom plate is processed from a metal mold containing iron, and fixed to each other by fixing means including welding. It is characterized by doing.
[0028]
And it is the apparatus using the housing | casing by the manufacturing method of a housing | casing, Comprising: A predetermined apparatus is fixed to the said structure, It is arrange | positioned on an installation surface via the said supporting member.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is an external perspective view showing a structure of a casing 100 common to each embodiment described later. In this figure, the casing 100 has left and right side plates 1 and 2 mainly made of a sheet metal material, and a hollow structure. A metal pipe 3 having a bottom plate 50 made of a sheet metal material and having a double bottom structure, which will be described later, and various reinforcing plates 7 made of the same sheet metal material. Is fixed by fixing means such as welding, screwing, and caulking.
[0030]
In addition, support members 22 represented by adjusters having a vertical height adjustment function are provided at the four corners below the bottom plate 50, and are placed on the installation surface without play.
[0031]
FIG. 2 is an external perspective view of the bottom plate 50. In this figure, a bottom plate 50 includes, for example, a top plate 8 that is a second bottom plate obtained by bending a cold rolled plate standard plate having a thickness of 1.6 mm with a pressing device or the like, and a first bottom plate that is also pressed. The lower plate 9 has a box-like shape integrally formed as shown in the figure by spot welding 10 indicated by a welding symbol and fixing means such as screws and caulking pins, and has a strength as a so-called double bottom structure. It is configured to support the entire load by securing the metal pipes 3 at the four corners.
[0032]
FIG. 3 is a three-dimensional exploded view of the bottom plate of FIG. With further reference to FIG. 3 in FIG. 2, as shown in the figure, it has a first wall surface 11 a that is bent from both edges of the upper plate 8 and the lower plate 9 and is formed at a substantially right angle from the edge. The upper plate 8 is formed so as to have a box shape, and the lower plate 9 is formed in a box shape having a second wall surface 11b formed at a substantially right angle from the edge portion. Yes.
[0033]
Further, the lower plate 9 is formed in a rectangular shape as shown in the figure, and the first drawn portion 16 is pressed so as to have a depth of 16.8 mm along the vicinity of the edges of the four sides. The diaphragm portion 16 is in contact with the upper plate 8. This depth can be set to an appropriate depth according to the design conditions at that time. In this way, by forming a convex shape toward the upper plate 8, as shown in the perspective view of the bottom plate 50 of FIG. 4, the joint portion 11, the top plate 8, and the peak portion of the first drawing portion 16 are formed. The gap is fixed at a number of locations by the spot welding 10 described above.
[0034]
By making the bottom plate 50 into a box shape as described above, in comparison with a flat bottom plate having a thickness of 3.2 mm, which is simply overlapped with the same mass, the second moment of section is reduced. Since it greatly increases, the strength against torsion of the bottom plate is greatly improved.
[0035]
Furthermore, since the drawn portion 16 is formed in the vicinity of the outer peripheral portion that is parallel to each side where stress is concentrated in torsional deformation, the strength against torsion of the bottom plate is greatly improved. Here, since the upper plate 8 and the lower plate 9 are joined at several points as shown in FIG. 2 on the joint surface between the peak portion of the drawing portion 16 and the upper plate 8, the box shape is formed. It is possible to completely prevent the upper plate and the lower plate from slipping when the bottom plate 50 has torsional deformation.
[0036]
Furthermore, as a countermeasure against stress at the stress concentration portion in the support member 22 in particular, the attachment portion of the support member 22 is provided inside the drawing portion 16 so that the thickness of the upper plate and the lower plate is 3.2 mm. Therefore, local deformation due to stress concentration in the vicinity of the attachment portion of the support member 22 can be prevented. Here, in general, the mechanical strength of the housing 100 such as an office machine is mainly secured by the strength of the bottom plate. Therefore, if the strength of the bottom plate is improved, the strength of the entire housing is also improved. Become.
[0037]
Therefore, by configuring the bottom plate as described above, the strength of the entire casing can be improved, and an effect of preventing many problems caused by deformation of the casing can be obtained.
[0038]
Next, FIG. 5 is a three-dimensional exploded view of the bottom plate 50 of the second embodiment. In this figure, components that have already been described are denoted by the same reference numerals and description thereof is omitted. As shown, the upper plate 12 is a flat plate, and only the lower plate 13 is pressed as shown. .
[0039]
The lower plate 13 is shaped like a box having a first wall surface 40 formed at a substantially right angle from the edge and a first flange 41 extending outward from the first wall surface 40 at a substantially right angle. The first flange 41 is joined to the edge of the upper plate and fixed by spot welding as described above.
[0040]
FIG. 6 is a three-dimensional exploded view of the bottom plate 50 of the third embodiment. In this figure, components that have already been described are denoted by the same reference numerals and description thereof is omitted. As shown in the figure, a second wall surface 42 formed at a substantially right angle on the edge of the upper plate 14, It is formed so as to have a box shape having a second flange portion 43 extending substantially at right angles from the second wall surface 42, and the first flange portion 41 and the second flange portion 43 of the lower plate 15 are After joining, the bottom plate 50 having a double bottom is obtained by fixing with the fixing means including the spot welding.
[0041]
FIG. 7A is a three-dimensional exploded view of the bottom plate 50 of the fourth embodiment, and FIG. 7B is a cross-sectional view of the main part after fixing. In this figure, components that have already been described are denoted by the same reference numerals and description thereof is omitted. As shown in the drawing, the drawing portion 16 is processed along the four side edges on the upper plate 17. As shown in FIG. 7B, the lower plate 26 is configured to be integrally formed by spot welding 10.
[0042]
FIG. 8 is a three-dimensional exploded view of the bottom plate 50 of the fifth embodiment. In this figure, a first drawing portion 16 is formed along the vicinity of the edges of the two opposing sides of the upper plate 18, and the edges of the two opposing sides of the lower plate 19 that is the second bottom plate. A drawing unit 160, which is a second drawing unit, is formed so as to be close to the first drawing unit 16 so as to be perpendicular to the first drawing unit 16, and the first drawing unit 16 and the first drawing unit 16 The two drawn portions 160 are positioned at the broken line portions 18a and 19a, and the edge portions are fixed by fixing means including spot welding.
[0043]
FIG. 9A is a three-dimensional exploded view of the bottom plate 50 of the sixth embodiment, and FIG. 9B is a cross-sectional view of the main part after fixing. As shown in the drawing, the first drawn portion 16 is formed in a convex shape with a height of approximately half of the completed thickness toward the lower plate 21 along the vicinity of the four side edges of the upper plate 20. In addition, the second drawn portion 160 is formed in a convex shape so as to be approximately half the thickness of the finished bottom plate toward the top plate 20 along the vicinity of the edge of the four sides. Then, as shown in FIG. 9B, the finished product is obtained by fixing with a fixing means including the spot weld 10.
[0044]
FIG. 10 is a three-dimensional exploded view of the bottom plate 50 of the sixth embodiment. FIG. 13 is a perspective view after completion. In both figures, components that have already been described are denoted by the same reference numerals and description thereof is omitted, so that a dedicated third drawn portion 23 for providing a support member becomes convex toward the upper plate 24. The four corners are press-worked, and support members are provided in the working portion 23. Note that the third drawing unit 23 can be freely provided as a circular drawing at a position different from the drawing unit 16 provided in the vicinity of the outer periphery in parallel with each side.
[0045]
Accordingly, the mounting position of the support member 22 can be designed according to the load distribution applied to the upper portion of the bottom plate (in this embodiment, the load distribution applied from the front and rear side plates) so as to minimize the deformation of the bottom plate. Become.
[0046]
In general, it is said that the deformation of the bottom plate is minimized when the support member is attached to the four points directly below the attachment position of the front and rear side plates, which is the largest in the load distribution on the top of the bottom plate. I followed this.
[0047]
As described above, a diaphragm is provided at an arbitrary position of the bottom plate, and a support member is attached to the diaphragm. As shown in the perspective view of FIG. 11, the attachment position of the support member 22 to the bottom plate is regulated. In comparison, the degree of freedom of the fixing position of the support member 22 increases as shown in the external perspective view of FIG. 12, and the degree of freedom of selection of the mounting position of the support member 22 according to the load distribution on the top of the bottom plate 50 increases. As a result, the support member 22 can be attached at a position where the deformation of the bottom plate is minimized, and an effect of preventing many problems due to the deformation of the housing can be obtained. Based on the above configuration, the main body is made uneven by making the bottom plate constituting the housing a box shape, providing a diaphragm, joining the upper and lower plates at the diaphragm, and attaching the support member to the diaphragm. Even when the front and rear side plates that are configured perpendicular to the housing are twisted with each other when they are placed on an installation stand with a base, the torsional load can be buffered by the bottom plate that holds the front and rear side plates. become.
[0048]
Further, since the support member 22 is attached to the diaphragm portion having high strength, local deformation near the attachment portion of the support member is suppressed, and deformation of the entire housing is prevented.
[0049]
【The invention's effect】
As described above, according to the present invention, when a relatively heavy device is placed on an uneven installation surface or when another optional unit is added, the strength of the bottom plate of the housing is increased. As a result, it is possible to provide a housing that can minimize deformation of the housing and solve various problems caused by the deformation, a manufacturing method thereof, and a device using the housing.
[0050]
[Brief description of the drawings]
FIG. 1 is an external perspective view showing a casing common to the present invention.
FIG. 2 is an external perspective view of a bottom plate according to the first embodiment of the present invention.
3 is a three-dimensional exploded view of the bottom plate of FIG. 2. FIG.
4 is a perspective view of a bottom plate 50. FIG.
FIG. 5 is a three-dimensional exploded view of a bottom plate 50 of a second embodiment.
FIG. 6 is a three-dimensional exploded view of a bottom plate 50 according to a third embodiment.
7A is a three-dimensional exploded view of a bottom plate 50 according to a fourth embodiment, and FIG. 7B is a cross-sectional view of a main part after fixing.
FIG. 8 is an exploded view of a bottom plate 50 according to a fifth embodiment.
FIG. 9 is a three-dimensional exploded view (a) of a bottom plate 50 according to a sixth embodiment, and a cross-sectional view (b) of an essential part after fixing.
FIG. 10 is a three-dimensional exploded view of a bottom plate 50 according to a seventh embodiment.
FIG. 11 is a perspective view of the bottom plate.
FIG. 12 is an external perspective view of a bottom plate.
FIG. 13 is a perspective view showing details of a bottom plate.
FIG. 14 is a perspective view showing a case of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Side plate 2 Side plate 3 Support | pillar 4 Top plate 5 Bottom plate 6 Stay 7 Reinforcement plate 8 Upper plate 9 Lower plate 10 Spot welded part 11 Joint part 12 Upper plate 13 Lower plate 14 Upper plate 15 Lower plate 16 Drawing part 17 Upper plate 18 Upper Plate 19 Lower plate 20 Upper plate 21 Lower plate 22 Support component 23 Drawing part 24 Upper plate 25 Lower plate 26 Lower plate 50 Bottom plate

Claims (6)

A rectangular bottom plate having four side edges is formed as a double bottom having a hollow portion by overlapping a lower plate and an upper plate, and a housing for fixing a structure on the bottom plate,
A supporting member that is formed in a convex shape from the lower plate at a height that abuts on the upper plate and supports the bottom plate with respect to the installation surface at first drawing portions provided at four corners of the lower plate. Install and
It has a shape along the longitudinal direction of each edge of the lower plate, is disposed between the first drawn portions, and is formed in a convex shape from the lower plate at a height that makes contact with the upper plate. A second drawing section;
Further, the lower plate and the upper plate are fixed by welding at the respective edge portions, the first drawn portion and the upper plate, and the second drawn portion and the upper plate. Enclosure. The lower plate is formed into a box shape having a first wall surface that is substantially perpendicular formed from said edge, also said on the plate into a box shape having a second wall which is substantially perpendicular formed from said edge Forming,
The housing according to claim 1 , wherein the first wall surface and the second wall surface are fixed by the welding . A first wall that is substantially perpendicular formed from said edge to form a first of said lower plate so that the box-shape having a flange portion that extends substantially perpendicularly from said first wall,
A second wall that is substantially perpendicular formed from said edge to form the upper plate so that a box shape having a second flange portion that extends substantially perpendicularly from said second wall,
The housing according to claim 1 , wherein the first flange portion and the second flange portion are fixed by the welding . The first drawing unit, toward the upper plate is formed in a convex shape at a height of approximately half the thickness of the bottom plate, also the second drawing unit, toward the first upper It formed in a convex shape with a thickness approximately half the height of the bottom plate, between the edge of the first drawing unit and the second drawn portion and the upper plate and the lower plate, welding The housing according to any one of claims 1 to 3 , wherein the housing is fixed with a screw. Housing according to any one of claims 1 to 4 wherein the lower plate and the upper plate is characterized by obtained by pressing a plate material thickness, including cold-rolled steel plate material. Housing according to any one of claims 1 to 5, characterized in that said support member is an adjuster comprising a height adjusting function.

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