Housing frame structure and housing frame assembly method

Abstract

To improve the workability and suppress cost increase by ensuring sufficient strength without welding even when a housing frame structure is large.SOLUTION: A housing frame structure includes a width direction frame 12 extending in the width direction, a depth direction frame 13 that extends in the depth direction and one end of which is joined to one end of the width direction frame 12 via a rivet 61, a vertical direction frame 14 that extends in the vertical direction and one end of which is joined to one end of the width direction frame 12 and one end of the depth direction frame 13 via rivets 62 and 63, respectively, and a reinforcing member 15 one side of which is joined to one end of the width direction frame 12 via a rivet 64, and the other side of which is joined to the depth direction frame 13 via a rivet 65.SELECTED DRAWING: Figure 13

Description

[Technical field]

[0001] The present invention relates to a housing frame structure and a housing frame assembling method. [Background technology]

[0002] Switchboards and control panels are constructed by housing electrical equipment inside a case, and when the size of the case is small, a rivet frame is used, which has low manufacturing costs and a short lead time, as shown in Reference 1. The bottom and top frames that make up the case are manufactured by bending a single steel plate. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-218806 A Summary of the Invention [Problem to be solved by the invention]

[0004] If the size of the case is large, with a width and depth of approximately 1,000 mm or more, the steel plates used to make the bottom and top frames will be large, requiring a large bender to perform the bending process, making production difficult.If a large bender cannot be used, the bottom and top frames will have to be made in sections and then welded together later, requiring skilled workers and resulting in disadvantages in terms of lead time and cost. An object of the present invention is to improve workability and suppress increases in costs by ensuring sufficient strength in a housing frame structure even for a large size without performing welding. [Means for solving the problem]

[0005] A housing frame structure according to one embodiment of the present invention comprises a width frame extending in the width direction in the horizontal direction, a depth frame extending in the depth direction in the horizontal direction and having one end joined to one end of the width frame via a fastener, a vertical frame extending in the vertical direction and having one end joined to one end of the width frame and one end of the depth frame via fasteners, and a reinforcing member having one side joined to one end of the width frame via a fastener and the other side joined to the depth frame via a fastener.

[0006] A housing frame assembling method according to another aspect of the present invention includes a step of joining one end of a width direction frame extending in the width direction in the horizontal direction to one end of a depth direction frame extending in the depth direction in the horizontal direction, by overlapping and joining joint pieces formed on both sides along the depth direction and the vertical direction with each other via a fastener; and after joining one end of the width direction frame to one end of the depth direction frame, when joining one end of a vertical direction frame extending in the vertical direction to one end of the width direction frame, by overlapping and joining joint pieces formed on both sides along the depth direction and the vertical direction with each other via a fastener, and and after joining one end of the vertical frame to one end of the width direction frame and joining one end of the vertical frame to one end of the depth direction frame, when joining one side of the reinforcing member to one end of the width direction frame, the joining pieces formed on both sides in the width direction and depth direction are overlapped and joined via fasteners, and when joining the other side of the reinforcing member to one end of the width direction frame, the joining pieces formed on both sides in the width direction and depth direction are overlapped and joined via fasteners. Effect of the Invention

[0007] According to the present invention, the width direction frame, the depth direction frame, and the length direction frame are each joined by fasteners, and the joints between the width direction frame and the depth direction frame are reinforced by reinforcing members. This ensures sufficient strength even for large-sized structures without welding, improving workability and suppressing increases in costs. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a perspective view of a housing frame structure. [Diagram 2] FIG. 4 is a perspective view showing one end of a width direction frame. [Diagram 3] FIG. 4 is a projection view showing one end of a width direction frame. [Figure 4] FIG. 4 is a perspective view showing one end of a depth direction frame. [Diagram 5] FIG. 2 is a projection diagram showing one end of a depth direction frame. [Figure 6] FIG. 4 is a perspective view showing one end of the vertical frame. [Figure 7] FIG. 2 is a projection view showing one end of a vertical frame. [Figure 8] FIG. [Figure 9] FIG. [Figure 10] A diagram showing the bottom frame and top frame. [Figure 11] 13 is a diagram showing a state in which a width direction frame and a depth direction frame are joined together. FIG. [Figure 12] FIG. 13 is a diagram showing the state in which the vertical frames are joined. [Figure 13] FIG. 13 is a diagram showing a state in which a reinforcing member is joined. [Figure 14] FIG. 13 is a diagram showing a vertical frame in a comparative example. [Figure 15] FIG. 13 is a diagram showing a corner bracket in a comparative example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that each drawing is a schematic view and may differ from the actual one. In addition, the following embodiment illustrates an apparatus and method for embodying the technical idea of ​​the present invention, and does not specify the configuration as described below. In other words, the technical idea of ​​the present invention can be modified in various ways within the technical scope described in the claims.

[0010] One embodiment "composition" In the following description, the three mutually orthogonal directions are referred to as the width direction, the depth direction, and the length direction for the sake of convenience. The width direction and the depth direction are the two lateral (or horizontal) directions, and the length direction is the up-down (or vertical) direction. Note that the width direction may be referred to as the depth direction, and the depth direction may be referred to as the width direction. FIG. 1 is a perspective view of the housing frame structure. Although an inverter board is assumed here as the housing frame structure 11, it can also be applied to other control boards, distribution boards, switchboards, etc. for storing various electrical devices, such as the outer boxes of cubicle-type high-voltage power receiving equipment. It is particularly suitable for large housing frame structures with dimensions in the width and depth directions each of which is approximately 1,000 mm or more.

[0011] The housing frame structure 11 is formed into a substantially rectangular parallelepiped shape by combining a width direction frame 12, a depth direction frame 13, and a vertical direction frame 14. That is, the housing frame structure 11 includes four width direction frames 12 extending along the width direction, four depth direction frames 13 extending along the depth direction, and four vertical direction frames 14 extending along the vertical direction. In this example, the vertical direction frame 14 is the longest, and the depth direction frame 13 is the shortest. One end of the width direction frame 12, one end of the depth direction frame 13, and one end of the vertical direction frame 14 are all joined via rivets (fasteners). Reinforcing members 15 for improving strength are joined to each corner where the width direction frame 12, the depth direction frame 13, and the vertical direction frame 14 intersect. Therefore, there are a total of eight reinforcing members 15, all of which are joined via rivets.

[0012] Specifically, on the bottom side, the ends of two width-direction frames 12 aligned in the depth direction and two depth-direction frames 13 aligned in the width direction are joined together to form a bottom frame 16. On the ceiling side, the ends of two width-direction frames 12 aligned in the depth direction and two depth-direction frames 13 aligned in the width direction are joined together to form a top frame 17. The four corners of the bottom frame 16 and the top frame 17 are joined together via four vertical frames 14. The width-direction frames 12, the depth-direction frames 13, the vertical frames 14, and the reinforcing members 15 are all formed by bending a single steel plate with a bender, and the thickness of each steel plate is assumed to be approximately uniform. In the following explanation, we will focus on one corner of the bottom frame 16, indicated by A in the figure, and explain each component in detail. The other corners have differences, such as being inverted up and down or left and right, but are basically the same configuration, so detailed explanations will be omitted. In addition, when referring to the inside or outside, both refer to the inside or outside of the housing frame structure 11.

[0013] FIG. 2 is a perspective view showing one end of the width direction frame. FIG. 3 is a projection view showing one end of the width direction frame. Fig. 3(a) is a view of the width direction frame 12 seen from the inside in the depth direction. Fig. 3(b) is a view of the width direction frame 12 seen from the inside in the vertical direction. Fig. 3(c) is a view showing the B-B cross section of the width direction frame 12. Fig. 3(d) is a view showing the CC cross section of the width direction frame 12. The width direction frame 12 is formed by bending a single steel plate into a substantially rectangular tube shape, and includes a vertical outer portion 21, a depth outer portion 22, a width outer portion 23, a depth inner portion 24, and a vertical inner portion 25.

[0014] The vertical outer portion 21 is a plate portion extending along the width and depth directions, and in the case of the width direction frame 12 constituting the bottom frame 16, is grounded to the floor surface. The depth direction outer portion 22 is a plate portion extending along the width direction and the vertical direction, and is formed by bending at a right angle from the outer end portion in the depth direction of the vertical direction outer portion 21 toward the inside in the vertical direction. The width direction outer portion 23 is a plate portion along the depth direction and the vertical direction, and is formed by bending at a right angle from the outer end portion in the width direction of the depth direction outer portion 22 toward the inside in the depth direction. The vertical dimension of the width direction outer portion 23 is approximately equal to the vertical dimension of the depth direction outer portion 22. The depth dimension of the width direction outer portion 23 is shorter than the depth dimension of the vertical direction outer portion 21.

[0015] The depth direction inner portion 24 is a plate portion extending along the width direction and the vertical direction, and is formed by bending at a right angle from the inner end portion in the depth direction of the vertical direction outer portion 21 toward the inside in the vertical direction. The depth direction inner portion 24 is not formed in the range of L1 from the width direction tip of the vertical direction outer portion 21. The vertical dimension of the depth direction inner portion 24 is shorter than the vertical dimension of the depth direction outer portion 22. The vertical inner portion 25 is a plate portion along the width direction and the depth direction, and is formed by bending at a right angle from the vertical inner end portion of the depth outer portion 22 toward the inside in the depth direction. The depth dimension of the vertical inner portion 25 is shorter than the depth dimension of the vertical outer portion 21.

[0016] Two through holes 26 aligned vertically are formed on the inside in the depth direction of the widthwise outer portion 23. Rivets are inserted into the through holes 26 when joining to the depth direction frame 13. Two through holes 27 aligned vertically are formed on the outside in the depth direction of the widthwise outer portion 23. Rivets are inserted into the through holes 27 when joining to the vertical frame 14. Therefore, the widthwise outer portion 23 serves as a joint piece with the depth direction frame 13 and a joint piece with the vertical frame 14. A through hole 28 is formed on the outer side in the width direction of the vertical outer portion 21. A rivet is inserted into the through hole 28 when joining with the reinforcing member 15. Therefore, the outer side in the width direction of the vertical outer portion 21 becomes the joining piece with the reinforcing member 15. The outer side in the vertical direction of the through hole 28 is countersunk.

[0017] FIG. 4 is a perspective view showing one end of the depth direction frame. FIG. 5 is a projection diagram showing one end of the depth direction frame. Fig. 5(a) is a view of the depth direction frame 13 seen from the inside in the width direction. Fig. 5(b) is a view of the depth direction frame 13 seen from the inside in the vertical direction. Fig. 5(c) is a view showing a D-D cross section of the depth direction frame 13. Fig. 5(d) is a view showing an E-E cross section of the depth direction frame 13. The depth direction frame 13 is formed by bending a single steel plate into a substantially rectangular tube shape, and includes a vertical outer portion 31, a width outer portion 32, a depth outer portion 33, a protruding piece 34, a width inner portion 35, and a vertical inner portion 36.

[0018] The vertical outer portion 31 is a plate portion extending along the depth direction and width direction, and in the case of the depth direction frame 13 constituting the bottom frame 16, is grounded to the floor surface. The widthwise outer portion 32 is a plate portion along the depth direction and the vertical direction, and is formed by bending at a right angle from the widthwise outer end portion of the vertical direction outer portion 31 toward the vertical inside. The vertical dimension of the widthwise outer portion 32 is approximately equal to the vertical dimension of the depthwise outer portion 22 of the widthwise frame 12. The depth direction outer portion 33 is a plate portion along the width direction and the vertical direction, and is formed by bending at a right angle from the outer end portion in the depth direction of the width direction outer portion 32 toward the inside in the width direction. The vertical dimension of the depth direction outer portion 33 is approximately equal to the vertical dimension of the width direction outer portion 32. The width dimension of the depth direction outer portion 33 is shorter than the width dimension of the vertical direction outer portion 31.

[0019] The protruding piece 34 is a plate portion extending in the depth direction and the vertical direction, and is formed by bending at a right angle from the inner end portion in the width direction of the depth direction outer portion 33 toward the outside in the depth direction. The widthwise inner portion 35 is a plate portion along the depth direction and the vertical direction, and is formed by bending at a right angle from the widthwise inner end portion of the vertical outer portion 31 toward the vertical inner side. The widthwise inner portion 35 is not formed in a range of L2 from the depth direction end of the vertical outer portion 31. The vertical dimension of the widthwise inner portion 35 is shorter than the vertical dimension of the widthwise outer portion 32. The vertical inner portion 36 is a plate portion along the depth direction and width direction, and is formed by bending at a right angle from the vertical inner end portion of the width outer portion 32 toward the inside in the width direction. The width dimension of the vertical inner portion 36 is shorter than the width dimension of the vertical outer portion 31.

[0020] Two through holes 37 aligned vertically are formed in the protruding piece 34. The pitch of the through holes 37 is the same as the pitch of the through holes 26 formed in the widthwise outer portion 23 of the widthwise frame 12. A rivet is inserted into the through holes 37 when joining to the widthwise frame 12. Therefore, the protruding piece 34 serves as a joining piece for the widthwise frame 12. Three through holes 38 aligned vertically are formed in the depth direction outer portion 33. Rivets are inserted into the through holes 38 when joining to the vertical frame 14. Therefore, the depth direction outer portion 33 becomes a joining piece with the vertical frame 14. A through hole 39 is formed on the outer side in the depth direction of the vertical outer portion 31. A rivet is inserted into the through hole 39 when joining with the reinforcing member 15. Therefore, the outer side in the depth direction of the vertical outer portion 31 becomes the joint piece with the reinforcing member 15. The outer side in the vertical direction of the through hole 39 is countersunk.

[0021] FIG. 6 is a perspective view showing one end of the vertical frame. FIG. 7 is a projection view showing one end of the vertical frame. Fig. 7(a) is a view of the vertical frame 14 seen from the inside in the width direction. Fig. 7(b) is a view of the vertical frame 14 seen from the inside in the depth direction. Fig. 7(c) is a view showing the F-F cross section of the vertical frame 14. The vertical frame 14 is formed by bending a single steel plate into a substantially rectangular tube shape, and includes a width direction outer part 41, a depth direction outer part 42, a width direction inner part 43, a depth direction inner part 44, and a vertical direction outer part 45. The widthwise outer portion 41 is a plate portion extending in the depth direction and the vertical direction. The depth dimension of the widthwise outer portion 41 is approximately equal to the depth dimension of the vertical outer portion 21 of the widthwise frame 12.

[0022] The depth direction outer portion 42 is a plate portion extending in the width direction and the vertical direction, and is formed by bending at a right angle from the outer end portion in the depth direction of the width direction outer portion 41 toward the inside in the width direction. The width dimension of the depth direction outer portion 42 is approximately equal to the width dimension of the depth direction outer portion 33 of the depth direction frame 13. The widthwise inner portion 43 is a plate portion along the depth direction and the vertical direction, and is formed by bending at a right angle from the widthwise inner end portion of the depthwise outer portion 42 toward the inside in the depth direction. The depth dimension of the widthwise inner portion 43 is shorter than the depth dimension of the widthwise outer portion 41.

[0023] The depth direction inner portion 44 is a plate portion along the width direction and the vertical direction, and is formed by bending at a right angle from the inner end portion in the depth direction of the width direction outer portion 41 toward the inside in the width direction. The width dimension of the depth direction inner portion 44 is approximately equal to the width dimension of the depth direction outer portion 42. The vertical outer portion 45 is a plate portion extending in the width and depth directions, and is formed by bending at a right angle from the vertical outer end of the width outer portion 41 toward the inside in the width direction. The vertical outer portion 45, which is the bottom side of the vertical frame 14, is grounded on the floor. The width dimension of the vertical outer portion 45 is approximately equal to the width dimension of the depth outer portion 42.

[0024] Two through holes 46 aligned vertically are formed on the vertical outer side of the widthwise inner portion 43. The pitch of the through holes 46 is the same as the pitch of the through holes 27 formed in the widthwise outer portion 23 of the widthwise frame 12. A rivet is inserted into the through holes 46 when joining to the widthwise frame 12. Therefore, the vertical outer side of the widthwise inner portion 43 becomes the joining piece with the widthwise frame 12. Three through holes 47 are formed vertically aligned on the vertical outer side of the depth direction inner portion 44. The pitch of the through holes 47 is the same as the pitch of the through holes 38 formed in the depth direction outer portion 33. Rivets are inserted into the through holes 47 when joining to the depth direction frame 13. Therefore, the vertical outer side of the depth direction inner portion 44 becomes the joining piece with the depth direction frame 13.

[0025] FIG. 8 is a perspective view showing a reinforcing member. FIG. 9 is a projection view showing the reinforcing member. 9(a) is a view of the reinforcing member 15 seen from the inside in the vertical direction. (b) in the figure is a view of the reinforcing member 15 seen from the inside in the width direction. (c) in the figure is a view of the reinforcing member 15 seen from the inside in the depth direction. The reinforcing member 15 is formed by bending a single steel plate, and includes a vertical outer portion 51, a depth outer portion 52, a depth inner portion 53, a width inner portion 54, a vertical outer portion 55, and a width outer portion 56.

[0026] The vertical outer portion 51 is a plate portion along the width direction and the depth direction. The width dimension of the vertical outer portion 51 is shorter than the length L1 of the width frame 12 where the depth inner portion 24 is not formed. The depth dimension of the vertical outer portion 51 is approximately equal to the depth dimension of the vertical outer portion 21 of the width frame 12. The depth direction outer portion 52 is a plate portion extending along the width direction and the vertical direction, and is formed by bending at a right angle from the outer end portion in the depth direction of the vertical direction outer portion 51 toward the inside in the vertical direction. The vertical dimension of the depth direction outer portion 52 is shorter than the vertical dimension of the depth direction outer portion 22 of the width direction frame 12.

[0027] The depth direction inner portion 53 is a plate portion along the width direction and the vertical direction, and is formed by bending at a right angle from the inner end portion in the depth direction of the vertical direction outer portion 51 toward the inside in the vertical direction. The vertical dimension of the depth direction inner portion 53 is longer than the vertical dimension of the depth direction outer portion 52, and is approximately equal to the vertical dimension of the depth direction inner portion 24 of the width direction frame 12. The widthwise inner portion 54 is a plate portion along the depth direction and the vertical direction, and is formed by bending at a right angle from the outer end portion in the width direction of the depthwise inner portion 53 toward the inside in the depth direction. The vertical dimension of the widthwise inner portion 54 is approximately equal to the vertical dimension of the depthwise inner portion 53 and the vertical dimension of the widthwise inner portion 35 of the depth direction frame 13.

[0028] The vertical outer portion 55 is a plate portion along the width direction and the depth direction. The depth dimension of the vertical outer portion 55 is shorter than the length L2 of the depth frame 13 where the width inner portion 35 is not formed. The width dimension of the vertical outer portion 55 is approximately equal to the width dimension of the vertical outer portion 31 of the depth frame 13. The widthwise outer portion 56 is a plate portion along the depth direction and the vertical direction, and is formed by bending at a right angle from the widthwise outer end portion of the vertical direction outer portion 55 toward the vertical inside. The vertical dimension of the widthwise outer portion 56 is shorter than the vertical dimension of the widthwise outer portion 32 of the depth direction frame 13, and is also shorter than the vertical dimension of the widthwise inner portion 54.

[0029] A through hole 57 is formed in the vertical outer portion 51. A rivet is inserted into the through hole 57 when joining to the widthwise frame 12. Therefore, the vertical outer portion 51 becomes a joining piece with the widthwise frame 12. A through hole 58 is formed in the vertical outer portion 55. A rivet is inserted into the through hole 58 when joining to the depth direction frame 13. Therefore, the vertical outer portion 55 becomes a joining piece with the depth direction frame 13.

[0030] Next, a method for assembling the housing frame structure 11 will be described. FIG. 10 is a diagram showing the bottom frame and the top frame. In summary, the assembly method is as follows: first, the bottom frame 16 and the top frame 17 are assembled. That is, the bottom frame 16 is formed by joining the ends of the two widthwise frames 12 aligned in the depth direction and the two depthwise frames 13 aligned in the width direction. The top frame 17 is formed by joining the ends of the two widthwise frames 12 aligned in the depth direction and the two depthwise frames 13 aligned in the width direction.

[0031] Then, the four corners of the bottom frame 16 and the top frame 17 are joined together via the four vertical frames 14, and reinforcing members 15 are joined to each corner, completing the housing frame structure 11. When joining the vertical frames 14 to the bottom frame 16 or the top frame 17, it is preferable to lay the vertical frames 14 down and to stand the bottom frame 16 or the top frame 17 upright. In the following explanation, the assembly method will be described in detail, focusing on one corner of the bottom frame 16, indicated by A in the figure. The other corners have differences, such as being inverted up and down or left and right, but are basically the same configuration, so detailed explanations will be omitted.

[0032] FIG. 11 is a diagram showing a state in which the width direction frame and the depth direction frame are joined together. First, one end of the width frame 12 and one end of the depth frame 13 are joined. In this process, the joining pieces formed on both sides along the depth direction and the vertical direction are overlapped and joined via a rivet 61 (fastener). That is, the inside in the depth direction where the two through holes 26 are formed in the width direction outer part 23 of the width frame 12 are overlapped with the protruding piece 34 where the two through holes 37 are formed in the depth frame 13. Then, the rivet 61 is inserted from the inside in the width direction into each of the overlapped through holes 26 and through holes 37, and the outer end of the width direction of the rivet 61 is crimped using a dedicated fastening tool to firmly adhere to the frame, thereby joining the width frame 12 and the depth frame 13. At this time, the outer end faces in the vertical direction of the outer part 21 of the width frame 12 and the outer part 31 of the vertical direction of the depth frame 13 are flush with each other. As the rivet 61, it is desirable to use a structural rivet that can provide high shear, high tensile and high pressure bonding, and here a round head type is used.

[0033] FIG. 12 is a diagram showing the state in which the vertical frames are joined. After joining one end of the width direction frame 12 and one end of the depth direction frame 13, one end of the vertical direction frame 14 and one end of the width direction frame 12 are joined. In this process, the joining pieces formed on both sides along the depth direction and the vertical direction are overlapped and joined via rivets 62 (fasteners). That is, the outside in the depth direction where the two through holes 27 are formed in the width direction outer part 23 of the width direction frame 12 and the width direction inner part 43 where the two through holes 46 are formed in the vertical direction frame 14 are overlapped. Then, the rivets 62 are inserted from the inside in the width direction into each of the overlapped through holes 27 and through holes 46, and the outer end of the width direction of the rivets 62 is crimped using a dedicated fastening tool to firmly adhere to each other, thereby joining the width direction frame 12 and the vertical direction frame 14. At this time, the outer end faces in the vertical direction of the vertical direction outer part 21 of the width direction frame 12 and the vertical direction outer part 45 of the vertical direction frame 14 are flush with each other. As the rivet 62, it is desirable to use a structural rivet that can provide high shear, high tensile and high pressure bonding, and here a round head type is used.

[0034] After joining one end of the width direction frame 12 and one end of the depth direction frame 13, one end of the vertical direction frame 14 and one end of the depth direction frame 13 are joined. In this process, the joining pieces formed on both sides along the width direction and the vertical direction are overlapped and joined via rivets 63 (fasteners). That is, the depth direction outer part 33 of the depth direction frame 13 in which the three through holes 38 are formed and the depth direction inner part 44 of the vertical direction frame 14 in which the three through holes 47 are formed are overlapped. Then, the rivets 63 are inserted from the inside in the depth direction into each of the overlapped through holes 38 and through holes 47, and the outer end of the depth direction of the rivets 63 is crimped using a dedicated fastening tool to firmly adhere to each other, thereby joining the depth direction frame 13 and the vertical direction frame 14. At this time, the outer end faces in the vertical direction of the vertical direction outer part 31 of the depth direction frame 13 and the vertical direction outer part 45 of the vertical direction frame 14 are flush with each other. It is preferable to use a structural rivet that can obtain high shear, high tensile and high pressure bonding as the rivet 63, and a round head type is used here. The positioning of the rivet 61 in the depth direction is set so that the outer end of the rivet 63 in the depth direction does not interfere with the outer end of the rivet 61 in the width direction.

[0035] FIG. 13 is a diagram showing a state in which the reinforcing member is joined. After joining one end of the vertical frame 14 to one end of the width frame 12 and joining one end of the vertical frame 14 to one end of the depth frame 13, one side of the reinforcing member 15 to one end of the width frame 12 is joined. In this process, the joining pieces formed on both sides along the width direction and the depth direction are overlapped and joined via a rivet 64 (fastener). That is, the vertical outer part 21 of the width frame 12 in which one through hole 28 is formed is overlapped with the vertical outer part 51 of the reinforcing member 15 in which one through hole 57 is formed. Then, the rivet 64 is inserted from the outside in the vertical direction into each of the overlapped through holes 28 and through holes 57, and the vertical inner end of the rivet 64 is crimped using a dedicated fastening tool to firmly adhere to each other, thereby joining the width frame 12 and the reinforcing member 15. At this time, the depth outer part 52 of the reinforcing member 15 and the depth outer part 22 of the width frame 12 are in surface contact with each other, so that the positioning in the depth direction is performed. The inner end faces in the depth direction of the depth direction inner part 53 of the reinforcing member 15 and the depth direction inner part 24 of the width direction frame 12 are flush with each other. As the rivet 64, it is preferable to use a rivet for a structure that can obtain high shear, high tensile and high pressure bonding, and here a countersunk type is used.

[0036] After joining one end of the vertical frame 14 to one end of the width frame 12 and joining one end of the vertical frame 14 to one end of the depth frame 13, the other side of the reinforcing member 15 to one end of the depth frame 13 is joined. In this process, the joining pieces formed on both sides along the width direction and the depth direction are overlapped and joined via the rivet 65. That is, the vertical outer part 31 of the depth frame 13 in which one through hole 39 is formed is overlapped with the vertical outer part 55 of the reinforcing member 15 in which one through hole 58 is formed. Then, the rivet 65 is inserted from the outside in the vertical direction into each of the overlapped through holes 39 and through holes 58, and the vertical inner end of the rivet 65 is crimped using a dedicated fastening tool to firmly adhere to each other, thereby joining the depth frame 13 and the reinforcing member 15. At this time, the width direction outer part 56 of the reinforcing member 15 and the width direction outer part 32 of the width frame 12 are in surface contact with each other, so that the positioning in the width direction is performed. The widthwise inner portion 54 of the reinforcing member 15 is located widthwise more inward than the widthwise inner portion 35 of the widthwise frame 12. As the rivet 65, it is preferable to use a structural rivet that can obtain high shear, high tensile and high pressure bonding, and here a countersunk head type is used.

[0037] 《Effect》 Next, the main operation of the embodiment will be described. The bottom and top frames that make up the case are generally made by bending a single steel plate and joining them with rivets. However, if the case is large, with a width and depth of approximately 1,000 mm or more, the steel plates used to make the bottom and top frames will be large, requiring a large bender to perform the bending process, making production difficult. If a large bender cannot be used, the bottom and top frames will have to be made in pieces and then welded together later, requiring skilled workers and being disadvantageous in terms of lead time and cost.

[0038] In one embodiment, the housing frame structure 11 is configured by a width direction frame 12, a depth direction frame 13, a vertical direction frame 14, and a reinforcing member 15. One end of the depth direction frame 13 is joined to one end of the width direction frame 12 via a rivet 61. One end of the vertical direction frame 14 is joined to one end of the width direction frame 12 via a rivet 62, and is joined to one end of the depth direction frame 13 via a rivet 63. One side of the reinforcing member 15 is joined to one end of the width direction frame 12 via a rivet 64, and the other side of the reinforcing member 15 is joined to the depth direction frame 13 via a rivet 65. In this way, the width direction frame 12, the depth direction frame 13, and the vertical direction frame 14 are each joined via a rivet, and the joint between the width direction frame 12 and the depth direction frame 13 is reinforced by the reinforcing member 15. As a result, sufficient strength can be ensured without welding even in a large size, improving workability and suppressing an increase in costs.

[0039] Furthermore, the ends of the two widthwise frames 12 aligned in the depth direction and the two depthwise frames 13 aligned in the width direction are joined together to form a bottom frame 16. The ends of the two widthwise frames 12 aligned in the depth direction and the two depthwise frames 13 aligned in the width direction are joined together to form a top frame 17. The four corners of the bottom frame 16 and the top frame 17 are joined together via four vertical frames 14. This makes it possible to form a cubic housing frame structure 11 with 6 faces, 12 sides, and 8 vertices.

[0040] Furthermore, rivets are used as fasteners when joining the width direction frame 12, depth direction frame 13, vertical direction frame 14, and reinforcing member 15. This eliminates the need for welding, improving workability and suppressing increases in costs. The width direction frame 12 and the depth direction frame 13 are joined by overlapping the joint pieces formed on both frames along the depth direction and the vertical direction. In this way, a highly rigid joint can be achieved with a simple structure. The width direction frame 12 and the length direction frame 14 are joined by overlapping joint pieces formed on both frames along the depth direction and the length direction. The depth direction frame 13 and the length direction frame 14 are joined by overlapping joint pieces formed on both frames along the width direction and the length direction. In this way, a highly rigid joint can be achieved with a simple structure.

[0041] Moreover, one side of the reinforcing member 15 and the width direction frame 12 are joined by overlapping joint pieces formed on both sides along the width direction and depth direction. Moreover, the other side of the reinforcing member 15 and the depth direction frame 13 are joined by overlapping joint pieces formed on both sides along the width direction and depth direction. In this way, a highly rigid joint can be achieved with a simple structure. Moreover, the width direction frame 12, the depth direction frame 13, the vertical direction frame 14, and the reinforcing member 15 are all formed by bending, which is advantageous in terms of production lead time and yield. Moreover, the dimensions of the housing frame structure 11 in both the width direction and the depth direction are approximately 1,000 mm or more. In this way, even if the housing frame structure 11 is large, sufficient strength is ensured without welding, thereby improving workability and suppressing increases in costs.

[0042] The assembly method of the embodiment includes the following steps. First, when joining one end of the width direction frame 12 and one end of the depth direction frame 13, the joint pieces formed on both sides along the depth direction and the vertical direction are overlapped and joined via a rivet 61. Then, when joining one end of the vertical direction frame 14 and one end of the width direction frame 12, the joint pieces formed on both sides along the depth direction and the vertical direction are overlapped and joined via a rivet 62. Then, when joining one end of the vertical direction frame 14 and one end of the depth direction frame 13, the joint pieces formed on both sides along the width direction and the vertical direction are overlapped and joined via a rivet 63. Then, when joining one side of the reinforcing member 15 and one end of the width direction frame 12, the joint pieces formed on both sides along the width direction and the depth direction are overlapped and joined via a rivet 64. Also, when joining the other side of the reinforcing member 15 and one end of the depth direction frame 13, the joint pieces formed on both sides along the width direction and the depth direction are overlapped and joined via a rivet 65. In this way, the width direction frame 12, the depth direction frame 13, and the vertical direction frame 14 are each joined via rivets, and the joint between the width direction frame 12 and the depth direction frame 13 is reinforced by the reinforcing member 15. This ensures sufficient strength without welding even for large-sized products, thereby improving workability and suppressing increases in costs.

[0043] The order of the process of joining the vertical frame 14 and the process of joining the reinforcing member 15 cannot be reversed. In other words, the reinforcing member 15 cannot be joined before the vertical frame 14 is joined. This is because, as shown in FIG. 13, if the rivet 65 is driven first, the fastening tool interferes with the rivet 65, and the rivet 63 located at the outermost vertical position among the rivets 63 cannot be driven. Therefore, in one embodiment, the vertical frame 14 is joined to both the width frame 12 and the depth frame 13, and then the reinforcing member 15 is joined to both the width frame 12 and the depth frame 13. By performing the joining in this order, the fastening tool does not interfere, and the rivet 63 can be reliably fastened.

[0044] Next, a comparative example will be described. Here, a configuration will be described in which a bottom frame 71 is formed by bending a single steel plate, and a vertical frame 73 is joined to the bottom frame 71 via corner brackets 72. FIG. 14 is a diagram showing a vertical frame in a comparative example. Fig. 14(a) shows the state before the vertical frame 73 is fitted. Fig. 14(b) shows the state after the vertical frame 73 has been fitted. The bottom frame 71 has a through hole 81 into which a rivet is inserted when joining with the corner bracket 72. The vertical frame 73 has a cutout 82 that fits into the bottom frame 71, and a through hole 83 into which a rivet is inserted when joining with the corner bracket 72. The periphery of the through hole 83 is drawn. The vertical frame 73 is positioned by fitting the cutout 82 into the bottom frame 71.

[0045] FIG. 15 is a diagram showing a corner bracket in a comparative example. Fig. 15(a) shows a perspective view of the corner bracket 72. Fig. 15(b) shows the corner bracket 72 in a joined state. The corner bracket 72 has a through hole 84 into which a rivet is inserted when it is joined to the bottom frame 71, and a through hole 85 into which a rivet is inserted when it is joined to the vertical frame 73. The periphery of the through hole 85 is drawn. The corner bracket 72 is fitted into the bottom frame 71, and joined to the bottom frame 71 by a rivet 86 inserted into the through hole 81 and the through hole 84. The vertical frame 73 is joined to the corner bracket 72 by a rivet 87 inserted into the through hole 83 and the through hole 85.

[0046] According to the comparative example, the vertical frame 73 is not directly joined to the bottom frame 71, but is indirectly joined via the corner bracket 72. Therefore, in order to improve the joint strength, the vertical frame 73 and the corner bracket 72 are drawn, but a special die is required for the drawing, which increases the cost. In contrast, in one embodiment, the vertical frame 14 is directly joined to the bottom frame 16 and the top frame 17, so the joint strength is improved compared to the configuration of the comparative example. The reinforcing member 15 plays a role of reinforcing the bottom frame 16 and the top frame 17, and is not joined to the vertical frame 14, so there is no need to draw the vertical frame 14 or the reinforcing member 15. Therefore, the increase in cost can be suppressed.

[0047] <<Variation>> In one embodiment, rivets are used as fasteners, but the present invention is not limited to this, and screws, bolts, and nuts may also be used. In short, any fastener such as rivets, screws, bolts, and nuts may be used as long as it can improve workability without requiring a skilled worker as in the case of welding. This allows a certain level of joint strength to be secured with relatively simple work. Also, compared to welding, it is easier to inspect the joint. In particular, rivets are highly reliable because they do not basically loosen.

[0048] In one embodiment, the depth direction inner portion 53 of the reinforcing member 15 and the depth direction inner portion 24 of the width direction frame 12 are in a non-contact state, but this is not limited thereto. For example, the vertical outer portion 51, the depth outer portion 52, and the depth inner portion 53 of the reinforcing member 15 may be fitted to the vertical outer portion 21, the depth outer portion 22, and the depth inner portion 24 of the width direction frame 12. This increases the contact area of ​​the reinforcing member 15, thereby increasing the rigidity. Similarly, the width direction inner portion 54 of the reinforcing member 15 and the width direction inner portion 35 of the depth direction frame 13 are in a non-contact state, but this is not limited thereto. For example, the vertical outer portion 55, the width outer portion 56, and the width inner portion 54 of the reinforcing member 15 may be fitted to the vertical outer portion 31, the width outer portion 32, and the width inner portion 35 of the depth direction frame 13. This increases the contact area of ​​the reinforcing member 15, thereby increasing the rigidity.

[0049] Although the above description has been given with reference to a limited number of embodiments, the scope of the invention is not limited thereto, and modifications of the embodiments based on the above disclosure will be obvious to those skilled in the art. [Explanation of symbols]

[0050] 11...housing frame structure, 12...width direction frame, 13...depth direction frame, 14...vertical direction frame, 15...reinforcing member, 16...bottom frame, 17...top frame, 21...vertical outer portion, 22...depth direction outer portion, 23...width direction outer portion, 24...depth direction inner portion, 25...vertical inner portion, 26...through hole, 27...through hole, 28...through hole, 31...vertical outer portion, 32...width direction outer portion, 33...depth direction outer portion, 34...protruding piece, 35...width direction inner portion, 36...vertical inner portion, 37...through hole, 38...through hole, 39...through hole, 41...width direction outer portion, 42...depth direction outer portion, 43...widthwise inner portion, 44...depthwise inner portion, 45...vertical outer portion, 46...through hole, 47...through hole, 51...vertical outer portion, 52...depthwise outer portion, 53...depthwise inner portion, 54...widthwise inner portion, 55...vertical outer portion, 56...widthwise outer portion, 57...through hole, 58...through hole, 61...rivet, 62...rivet, 63...rivet, 64...rivet, 65...rivet, 71...bottom frame, 72...corner bracket, 73...vertical frame, 81...through hole, 82...notch, 83...through hole, 84...through hole, 85...through hole, 86...rivet, 87...rivet

Claims

1. A width direction frame extending in a width direction of the lateral direction; a depth direction frame extending in a depth direction in the lateral direction and having one end joined to one end of the width direction frame via a fastener; a vertical frame extending in a vertical direction and having one end joined to one end of the width direction frame and one end of the depth direction frame via fasteners; a reinforcing member having one side joined to one end of the width direction frame via a fastener and the other side joined to the depth direction frame via a fastener, The width direction frame is A vertical outer portion is a plate portion along the width direction and the depth direction, The depth direction frame is A vertical outer portion is a plate portion along the width direction and the depth direction, The reinforcing member is A vertical outer portion that is a plate portion provided on one side along the width direction and the depth direction; A vertical outer portion is provided on the other side and is a plate portion along the width direction and the depth direction, The one side of the reinforcing member and the width direction frame are joined by overlapping the vertical outer portion of the one side of the reinforcing member and the vertical outer portion of the width direction frame, A housing frame structure characterized in that the other side of the reinforcing member and the depth direction frame are joined by overlapping the vertical outer portion of the other side of the reinforcing member and the vertical outer portion of the depth direction frame.

2. A bottom frame is formed by joining the ends of the two width direction frames arranged in the depth direction and the two depth direction frames arranged in the width direction, A top frame is formed by joining the ends of the two width direction frames arranged in the depth direction and the two depth direction frames arranged in the width direction, 2. The housing frame structure according to claim 1, wherein the four corners of the bottom frame and the top frame are joined together via the four vertical frames.

3. 3. The housing frame structure according to claim 1, wherein the fastener is any one of a rivet, a screw, and a bolt and nut.

4. The housing frame structure according to any one of claims 1 to 3, characterized in that the width direction frame and the depth direction frame are joined by overlapping joint pieces formed on both frames along the depth direction and vertical direction.

5. The width direction frame and the length direction frame are joined by overlapping joint pieces formed on both frames along the depth direction and the length direction, The housing frame structure according to any one of claims 1 to 4, characterized in that the depth direction frame and the vertical direction frame are joined by overlapping joint pieces formed on both frames along the width direction and vertical direction.

6. 6. The housing frame structure according to claim 1, wherein the width direction frame, the depth direction frame, the vertical direction frame and the reinforcing member are all formed by bending.

7. 7. The housing frame structure according to claim 1, wherein each of the dimensions in the width direction and the depth direction is 1,000 mm or more.

8. a step of joining one end of the width direction frame extending in the width direction in the horizontal direction and one end of the depth direction frame extending in the depth direction in the horizontal direction by overlapping and joining the joining pieces formed on both sides along the depth direction and the vertical direction with each other via a fastener; After joining one end of the width direction frame and one end of the depth direction frame, a step of joining one end of a vertical frame extending in a vertical direction to one end of the width direction frame by overlapping joint pieces formed on both frames along the depth direction and the vertical direction and joining them via a fastener, and joining one end of the vertical frame to one end of the depth direction frame by overlapping joint pieces formed on both frames along the width direction and the vertical direction and joining them via a fastener; a step of joining one end of the vertical frame to one end of the width direction frame and joining one end of the vertical frame to one end of the depth direction frame, and then, when joining one side of a reinforcing member to one end of the width direction frame, overlapping a vertical outer portion which is a plate portion provided on one side of the reinforcing member and extending along the width and depth directions with a vertical outer portion which is a plate portion provided on the width direction frame and extending along the width and depth directions and joining them via a fastener, and when joining the other side of the reinforcing member to one end of the depth direction frame, overlapping a vertical outer portion which is a plate portion provided on the other side of the reinforcing member and extending along the width and depth directions with a vertical outer portion which is a plate portion provided on the depth direction frame and extending along the width and depth directions and joining them via a fastener.

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