JP4306495B2 - Housing structure - Google Patents

Description

  The present invention relates to a housing structure, and constitutes a housing by joining members formed by bending a steel plate.

  The switchboard and control panel are configured by housing electrical devices inside a casing. Conventionally, there are the following cases as the case structure of this case.

  The housing structure described in Patent Document 1 is to form a part by sheet-metal-working and bending a steel plate, and then joining the parts to produce a housing. In such a structure, sheet metal processing is required every time it is manufactured, and it is difficult to cope with a short delivery time.

  The housing structure described in Patent Document 2 is formed by welding a shape steel having a constant cross-sectional shape to form a frame and sticking a panel to the frame. In such a structure, if the design is not completed, the production cannot be started, and the number of parts to be assembled is limited because the number of parts to be welded is increased.

  The housing structure described in Patent Document 3 is such that a frame is formed into a pipe shape by roll forming, a plurality of the frames are joined to form a frame, and a panel is joined to the frame. Frames can be stocked, which is good for mass production of housings, otherwise it is inefficient.

  In addition, there is a case structure shown in FIG. 10 as a case structure in which the case structure of Patent Document 1 and the case structure of Patent Document 3 are combined. The same top and bottom nadir frame unit 51 is formed by bending a steel plate into a box shape as shown in the figure, and the vertical frame 53 is manufactured by bending the steel plate, although the steel plate is not roll-formed. Are connected through four vertical frames 53 to form a housing 54. Here, gussets for connecting the upper and lower nadir frame units 51 and the vertical frame 53 are used, and these gussets are respectively coupled to and integrated with the nadir frame unit 51. The vertical frame 53 is processed and stocked in advance, and the nadir frame unit 51 is designed and processed each time.

In addition, as shown in FIG. 11, due to the variety of external dimensions of the housing, the nadir plate 58 is provided with a number of holes for joining the horizontal frames so that it can accommodate horizontal frames of different lengths. A horizontal frame 56 and a horizontal frame 57 having different lengths are attached to the nadir plate 58. In addition, 55 is a gusset and 58a is an opening.
JP 2000-152430 A JP 7-67219 A Japanese National Patent Publication No. 11-505968

  However, there is a problem that the strength of the housing is small. For example, in the case shown in FIG. 10, the cross-sectional shape of the four vertical frames and the cross-sectional shape of the horizontal frame portion that is eight on the top and bottom are U-shaped. Since the portion rising upward from the gusset is L-shaped, the strength at this portion is small. In addition, even if the U-shaped part is large in moment of inertia and has a large cross-sectional moment, the load is applied in various directions, so the U-shape may be deformed and opened, resulting in reduced rigidity. is there.

  Then, an object of this invention is to provide the housing | casing structure which solved said subject.

The invention according to claim 1 includes a nadir frame portion that forms a bottom surface or a ceiling surface, and a plurality of connection portions that protrude from a corner portion of the nadir frame portion in the same direction substantially perpendicular to the nadir frame portion. A nadir frame unit is configured, and the nadir frame unit includes a horizontal frame that configures each side of the nadir frame portion, and a gusset that connects the horizontal frames, and the gusset includes the horizontal frame. A pair of fitting portions that fit into the end portions of the frame and the connection portions that are substantially perpendicular to the respective fitting portions are integrated by joining the base end portions to each other, and the pair of nails The frame unit is disposed in a state where the connection portions face each other, a plurality of vertical frames are disposed between the pair of nadir frame units, and the connection portions are fitted and coupled to both ends of the vertical frame. In the housing structure,
Of the pair of opposing sides forming the substantially U-shape, the pair of fitting portions are substantially U-shaped in cross-section and form a right angle with the U-shaped opening facing outward. A pair of facing portions that are welded by butting the tips of one side of the two, forming a welded surface of the connecting portion, welding the connecting portion substantially vertically to the corner on the welded surface, and forming the substantially U-shape. The tip of the other side of the sides is positioned on the side surface of the connecting portion .

In such a housing structure, a pair of nadir frame units are arranged at the upper and lower positions with the connecting portions facing each other, and the upper and lower portions of each of the plurality of vertical frames arranged between the pair of nadir frame units are arranged. By fitting the connecting portions of the upper and lower nadir frame units to the ends, a pair of nadir frame units are coupled via a plurality of vertical frames, thereby forming a casing. In particular, since the tip of the side facing the connection part welding surface of the pair of opposing sides forming a substantially U-shape of the pair of insertion parts is applied to the side surface of the connection part, The positioning can be performed by sandwiching the side surface of the connecting portion between the tip and the tip of the side of the other fitting portion. Further, by welding the tip of the other side to the side surface of the connection portion, the pair of fitting portions and the connection portion can be more firmly coupled, and the tip of the side is deformed. Can be prevented.

According to a second aspect of the present invention, in the housing structure according to the first aspect, the horizontal frame is configured such that a member having a substantially U-shaped cross-section is disposed so that the U-shaped opening is on the inside. Features.

In such a housing structure, in a state where adjacent horizontal frames constituting the nadir frame portion are coupled via a gusset, the fitting portion is inserted into the horizontal frame, and the cross section of the horizontal frame is copied. The other member closes the U-shaped opening and the U-shaped opening in the cross section of the fitting portion to form a pipe shape. As a result, the strength increases.

The invention according to claim 3 is characterized in that, in the housing structure according to claim 1 or 2, the cross-sectional shape of the vertical frame is substantially U-shaped while the connection portion is formed in a pipe shape. .

In such a housing structure, when connecting a pair of nadir frame units via a plurality of vertical frames, pipe-shaped connection portions are provided inside the portions where the cross-sectional shapes of both ends of the vertical frame are substantially U-shaped. The vertical frame and the nadir frame unit can be easily combined.

The invention according to claim 4 is the housing structure according to any one of claims 1 to 3 , wherein an end surface of a portion of the end portion of the horizontal frame that is substantially perpendicular to the vertical frame is defined as a length of the horizontal frame. It is set to approximately 45 degrees with respect to the vertical direction, and the end faces are joined without gaps when the horizontal frames are joined at a substantially right angle .

In such a housing structure, when the adjacent ones of the horizontal frames are joined at 90 degrees to each other, when the ends of the horizontal frames are joined together, the end surface of the portion substantially perpendicular to the vertical frame is formed. Since both are approximately 45 degrees with respect to the length direction of the horizontal frame, the end surfaces of the horizontal frame at the corner portion of the nadir frame portion are joined together without a gap, resulting in a joining similar to the corner portion of the frame. .

According to a fifth aspect of the present invention, in the housing structure according to any one of the first to fourth aspects , a circle is formed at the tip of one side of the pair of opposing sides that form a substantially U-shape of the pair of fitting portions. An arc-shaped notch is provided, and a hole for attaching the housing to the frame is formed on the welding surface of the connection portion by welding and joining the tips of one side of the pair of fitting portions to each other. And

In such a case structure, a hole for attaching the case to the base frame is naturally formed in the welding surface of the connection portion by abutting and welding the ends of one side of the pair of fitting portions.

  According to the housing structure according to the present invention, the pair of nadir frame units are arranged at the upper and lower positions, and the connecting portions of the upper and lower nadir frame units are respectively fitted to the upper and lower ends of the plurality of vertical frames. As a result, the pair of nadir frame units are coupled via a plurality of vertical frames to obtain a casing, which makes it easy to manufacture the casing. In addition, the size of the housing can be freely changed simply by changing the length of the horizontal frame and the length of the vertical frame constituting the nadir frame unit.

Embodiments of the housing structure according to the present invention will be described below.
(A) Embodiment 1
FIG. 1 shows a perspective view of Embodiment 1 of the housing structure according to the present invention. The casing 1 includes an upper nadir frame unit 3, a lower nadir frame unit 3 having the same configuration as the nadir frame unit 3, four vertical frames 4, and a reinforcing member 5. .

  The configuration of the nadir frame unit 3 will be described with reference to FIG. The nadir frame unit 3 includes a nadir frame portion 3a that forms a ceiling surface or a bottom surface, and a plurality of connection portions 3b that protrude in the same direction from corner portions of the nadir frame portion 3a. The member which comprises such a nadir frame unit 3 is demonstrated in detail. The nadir frame unit 3 is coupled to the four horizontal frames 6 constituting the respective sides of the nadir frame portion 3a and the horizontal frames 6 at substantially right angles by being fitted into the end portions of the horizontal frame 6. And the four gussets 7 for connecting the top frame unit 3 and the vertical frame 4 to each other. FIG. 3 shows an exploded perspective view of the joint between the horizontal frame 6 and the gusset 7. A pair of fitting portions 8 and 9 provided in the gusset 7 are fitted into the end portions of the horizontal frame 6, and the four horizontal frames 6 are coupled to each other in a quadrangular shape to constitute the nadir frame unit 3.

  Next, the horizontal frame 6 that is a constituent member of the nadir frame unit 3 will be described. As shown in FIG. 3, the horizontal frame 6 has a substantially U-shaped cross section, and is composed of an upper horizontal portion 6a, a lower horizontal portion 6b, and a vertical portion 6c connecting them, and the lower horizontal portion 6b is an upper horizontal portion. It is longer than the part 6a. The four horizontal frames 6 are all arranged so that the U-shaped opening is on the inside. The shape of the end of each horizontal frame 6 will be described. As shown in FIG. 3, when the end portions of the horizontal frame 6 are coupled via the gusset 7 and the vertical portions 6c are brought into contact with each other, the connecting portion 3b penetrates the upper horizontal portion 6a. A square notch 10 is formed at the end. On the other hand, the end surface 11 of the horizontal frame 6 is connected to the lower horizontal portion 6b perpendicular to the vertical frame 4 so that the joint portion between the end faces of the horizontal frame 6 is similar to the corner portion of the frame. It is formed at approximately θ = 45 degrees with respect to the length direction. And the semicircular notch part 11a is formed in two places of the end surface 11. FIG.

  In order to manufacture such a horizontal frame 6 in large quantities, as shown in FIG. 4, a cutting material 12 having a cut surface in consideration of the cutout portion 10, the end surface 11, and the cutout portion 11a in advance from a long plate material 13 (in diagonal lines) The horizontal frame 6 having the upper horizontal portion 6a, the vertical portion 6c, and the lower horizontal portion 6b is obtained by cutting the display) and bending it along the folding curves 14, 15. In order to increase the efficiency of the bending work after cutting, a plurality of horizontal frames 6 can be obtained simultaneously by bending a plurality of plate members 13 in a state where the plate members 13 are connected by micro joints arranged at positions corresponding to the cut material 12. . When the nadir frame portion 3a is square as in the present embodiment, only the horizontal frame 6 having the same length is manufactured. However, when the rectangular frame 6 is desired to be rectangular, the horizontal frame 6 has two different lengths. Can be made.

Next, the structure of the gusset 7 which is a structural member of the nadir frame unit 3 is demonstrated based on FIG. As shown to Fig.5 (a), the gusset 7 couple | bonds and integrates a pair of insertion parts 8 and 9 and the connection part 3b. The insertion part 9 is demonstrated. As shown in FIG. 5 (b), the fitting portion 9 has an angle of θ = 45 degrees, and after the cutting line 9c is provided on the plate material having the arc-shaped cutout portions 9a and 9b, the folding line 9d, It is formed by bending along 9e. Similarly, the insertion portion 8 is created symmetrically with the insertion portion 9. Moreover, the connection part 3b is formed in the pipe shape of a cross section square by bending three places of a board | plate material. Then, by joining the pair of fitting portions 8 and 9 along the weld line 9 f , the base end portions are joined so that the U-shaped cross-section portions of the fitting portions 8 and 9 are substantially perpendicular to each other. Further, by welding the base end portion of the connection portion 3b placed at a position corresponding to the notch portion 9b, a connection portion 3b that is substantially perpendicular to both the insertion portions 8 and 9 is provided. A gusset 7 having holes 16 and 17 can be obtained with the U-shaped opening of the U-shaped cross section facing outward.

  The horizontal frames 6 made as described above are arranged to form a quadrangle, and gussets 7 are respectively arranged at the corners of the quadrangle. As shown in FIG. A pair of insertion portions 8 and 9 are fitted into the respective end portions. Thereby, the nadir frame unit 3 which consists of the nadir frame part 3a and the connection part 3b is made. Bolts, rivets, welding, and the like are used for coupling the horizontal frame 6 and the fitting portions 8 and 9. In a state in which the fitting portions 8 and 9 are fitted into the end portions of the horizontal frame 6, the horizontal frame 6 has the U-shaped opening of the cross-sectional shape inside, while the fitting portions 8 and 9 have the U-shaped cross-sectional shape. Since the other opening is the outside, the other member closes the opening of each other to form a pipe shape. For this reason, in the corner portion of the nadir frame portion 3a where a large force is easily applied, the fitting portions 8 and 9 and the horizontal frame 6 are combined into a pipe shape, and the strength against bending load is large. The holes 6d on the lower surface in FIG. 2 and the holes 16 and 17 in FIG. 5A are for attaching the housing 1 to a frame (not shown).

  Next, the vertical frame 4 and the reinforcing member 5 will be described. As shown in FIG. 3, the vertical frame 4 has a substantially U-shaped cross section. In addition to the U-shaped portion, an inclined portion 4a and a mounting portion 4b for mounting other components are provided in addition to the U-shaped portion. On the other hand, the reinforcing member 5 is configured as shown in FIG. As shown also in FIG. 1, the upper part of the reinforcing member 5 is bent by approximately 90 degrees in the horizontal direction to form a bent portion 5a, thereby improving the strength against bending load. Then, both ends are alternately bent on one side and the other side to form auxiliary mounting portions 5b. And the edge part vicinity of the reinforcement member 5 is couple | bonded with the attachment part 4b which is the one side of the vertical frame 4 via the three screws 18 like FIG. 1, and the edge part of the reinforcement member 5 is the vertical frame. The other side of 4 is coupled via three screws 19 as shown in FIG. For this reason, in the position of the reinforcing member 5 in the height direction of the vertical frame 4, as shown in FIG. 6, the vertical frame 4 partially has a pipe shape, and the strength is high. The number of reinforcing members 5 is determined according to the required strength. As shown in FIG. 3, the upper and lower nadir frame units 3, 3 are coupled via the four vertical frames 4 by fitting the connecting portions 3 b to both ends of the four vertical frames 4. .

  In switchboards and control panels, the cabinets may be arranged in the left-right direction to form a row of boards. In such a case, a partition plate is provided between adjacent housings. In the present invention, this partition plate is attached to the inclined portion 4 a of the vertical frame 4. As shown in FIG. 7, the cabinets 1 are arranged in the vertical direction in the figure to form a row board. The housing 1 is coupled to the frame via screws 33 inserted through the holes 6 d and 16, and the vertical frame 4 is disposed at the corner portion of the housing 1. A door 23 is provided on the front surface of the housing 1. A partition plate 20 is provided at the boundary between the casings 1, and the partition plate 20 is attached to the inclined portion 4 a of the vertical frame 4. An end portion of the partition plate 20 is bent at an acute angle to form an attachment portion 20a, and a tool hole 20b is formed at a position corresponding to the attachment hole of the attachment portion 20a. The partition plate 20 is attached to the inclined portion 4a of the vertical frame 4 by turning the screw 22 with the screwdriver 21 inserted through the tool hole 20b.

  On the other hand, as shown in FIG. 8 as a reference view, conventionally, when the partition plate 20 is attached to the vertical frame 4 having no slope portion, a mounting bracket 24 having an L-shaped cross section is temporarily attached to the vertical frame 4. A partition plate 20 is attached to 24 via screws 25. In the present invention, since the inclined portion 4a is provided in the vertical frame 4, the partition plate 20 can be directly attached to the vertical frame 4 without using a mounting bracket. Further, conventionally, ribs 20a for preventing bending are formed on the partition plate 20 by ribbing. However, in the present invention, the end portion of the partition plate 20 is bent at an acute angle to form the mounting portion 20a. This part has a function of preventing bending, and there is no need for ribs.

  Next, the operation of the housing structure will be described. In such a casing structure, the pair of nadir frame units 3 and 3 are arranged in the vertical position with the connection portions 3b facing each other, and arranged between the pair of nadir frame units 3 and 3 4. A pair of nadir frame units 3 and 3 are coupled via the four vertical frames 4 by fitting the connecting portions 3b to the upper and lower ends of each of the vertical frames 4 so that the casing 1 Get.

  A feature of this housing structure is that the housing 1 can be obtained simply by connecting the nadir frame unit 3 and the vertical frame 4, both of which are flat, so that a large space can be obtained even if they are manufactured and stocked in advance. Do not occupy. Further, as the horizontal frame 6 and the vertical frame 4, members having a substantially U-shaped cross-sectional shape are used, and pipe-shaped members that are not easily bent are not used, but both ends of the horizontal frame 6 to which a large force is applied. The portion is fitted with the fitting portions 8 and 9 of the gusset 7 having a U-shaped cross section, and the pipe shape is constituted by two parts, so that the strength is high.

  As can be seen from FIG. 1, the horizontal frame 6 and the vertical frame 4 are closed in three directions because they have at least a U-shaped portion in the cross section. Since the U-shaped opening part is facing inward and cannot be seen, the product value is not lowered in appearance. A gusset 7 is arranged at a corner portion that receives a large force. As described above, the both ends of the horizontal frame 6 are fitted with the fitting portions 8 and 9 to form a pipe shape with two parts. The pipe-shaped connecting portion 3b of the gusset 7 is fitted to the end portion of the gusset 7 to increase the strength.

  The corner part of the housing that requires strength is formed into a pipe shape by assembling two parts, and does not require a welding technician like an angle frame board that joins all the components by welding, The production place is not limited. For this reason, the manufacturing cost can be kept low.

  In the present invention, the nadir frame portion 3a is constituted by four horizontal frames 6 instead of an integral component. In the case of an integrated structure, the holes are cut out and discarded to form the holes for penetrating the wires and the holes for ventilation. However, such materials are not wasted and the yield is improved.

In addition, the other members are not pipe-shaped except for the connecting portion 3b, and are a combination of members having a U-shaped portion, so that there is an opening on one side, and there is no problem of coating accumulation during painting. In addition, although the connection part 3b is pipe shape, since the full length is short, it can paint without difficulty.
(A) Embodiment 2
FIG. 9 shows a cross-sectional view of the vertical frame in the second embodiment of the housing structure according to the present invention. In the first embodiment, the cross-sectional shape of the vertical frame is substantially U-shaped. However, if post-treatment of the surface treatment such as a plated steel plate is unnecessary, a general-purpose type is used as shown in FIG. Thus, the vertical frame 26 may be bent into a pipe shape. However, in the case of a roll-formed vertical frame, welding is performed to close the mating portion at the same time, but if it is manufactured by a general-purpose type, welding is a separate process, which causes a cost increase. Therefore, when the vertical frame 26 having a cross-sectional shape as shown in FIG. 9 is used, the mating portion of the vertical frame 26 is coupled to the vertical frame 26 by using a screw for attaching another plate material.

  FIG. 9B shows a case in which a side plate 27 is attached to the vertical frame 26 of the housing, and not only the side plate 27 is attached to the vertical frame 26 with screws 28 but also the mating portion of the vertical frame 26 with the screws 28. Are combined.

  FIG. 9C shows a case where a partition plate 29 is attached to the vertical frame 26 of the housing. The partition plate 29 is attached to the vertical frame 26 with screws 30 and the mating portion of the vertical frame 26 is coupled with other screws 30. is doing.

  FIG. 9D is a diagram in which both ends of the reinforcing member 31 are coupled to the vertical frame 26 via screws 32.

  In the embodiment, the case where the shape of the nadir frame portion is a square or a rectangle has been described. However, by changing the angle formed by the fitting portions, a shape such as a triangle, a pentagon, and a hexagon can be obtained. Further, in the present invention, the names of the nadir frame portion, nadir frame unit, horizontal frame, and vertical frame are used as names that limit the vertical relationship, but these are names for convenience, and the nadir frame portion is the case. It is included in the present invention not only when it is located on the ceiling surface side and the bottom surface side, but also when it is located on the front side and the back side, or on the left side and the right side. is there.

The perspective view which shows a housing | casing structure (Embodiment 1). The perspective view of a nadir frame unit in connection with a housing structure (Embodiment 1). FIG. 3 is an exploded perspective view showing a configuration of a corner portion in the housing structure (Embodiment 1). The block diagram which concerns on a housing | casing structure and shows the material removal and bending part of a horizontal frame (Embodiment 1). It relates to the gusset used for the housing structure, (a) is a perspective view, (b) is a plan view showing the material removal of the insertion portion (Embodiment 1). The top view which concerns on a housing | casing structure and shows the relationship between a vertical frame and a reinforcement member (Embodiment 1). FIG. 3 is a plan view of the vicinity of a portion where a partition plate is provided with the casing as a row board according to the casing structure (Embodiment 1). The perspective view of the vicinity of the part which concerns on the conventional housing | casing structure for a comparison, and provided the partition plate by using a housing | casing as a row. The top view of a vertical frame in connection with a housing structure (Embodiment 2). The perspective view which shows a housing structure (conventional). It relates to a nadir frame unit in a housing structure, (a) is a front view, (b) is a bottom view, and (c) is a right side view (conventional).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Housing | casing 3 ... Nadir frame unit 3a ... Nadir frame part 3b ... Connection part 4 ... Vertical frame 6 ... Horizontal frame 7 ... Gusset 8, 9 ... Insertion part

Claims (5)

A nadir frame unit comprising a nadir frame portion forming a bottom surface or a ceiling surface and a plurality of connecting portions protruding in the same direction substantially perpendicular to the nadir frame portion from a corner portion of the nadir frame portion,
The nadir frame unit is composed of a horizontal frame that forms each side of the nadir frame portion, and a gusset that connects the horizontal frames,
The gusset is formed by combining a pair of insertion portions that fit into the end portions of the horizontal frame and the connection portions that are substantially perpendicular to the respective insertion portions, by coupling the respective base end portions to each other.
The pair of nadir frame units are arranged in a state where the connection parts face each other, a plurality of vertical frames are arranged between the pair of nadir frame units, and the connection parts are arranged at both ends of the vertical frame. In a housing structure that is mated and joined ,
Of the pair of opposing sides forming the substantially U-shape, the pair of fitting portions are substantially U-shaped in cross-section and form a right angle with the U-shaped opening facing outward. A pair of facing portions that are welded by butting the tips of one side of the two, forming a welded surface of the connecting portion, welding the connecting portion substantially vertically to the corner on the welded surface, and forming the substantially U-shape. A housing structure characterized in that the tip of the other side of the sides is positioned on a side surface of the connecting portion . 2. The housing structure according to claim 1, wherein a member having a substantially U-shaped cross-section is disposed in the horizontal frame so that an opening of the U-shape is inside . 3. The housing structure according to claim 1 , wherein a cross-sectional shape of the vertical frame is substantially U-shaped, and the connection portion is formed in a pipe shape . 4. The housing structure according to any one of claims 1 to 3 , wherein an end surface of a portion of the horizontal frame that is substantially perpendicular to the vertical frame is approximately 45 degrees with respect to a length direction of the horizontal frame. The housing structure is characterized in that the end faces are joined without a gap when the horizontal frames are joined at a substantially right angle . In the housing structure according to any one of claims 1 to 4, an arcuate cutout is provided at the tip of one of the pair of opposing sides that form a substantially U-shape of the pair of insertion portions, A casing structure characterized in that a hole for attaching the casing to a frame is formed on the welding surface of the connection portion by welding and joining the tips of one side of the pair of fitting portions .

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