Taking off the structure and box body

Abstract

To provide a mounting structure and box body that make it difficult to lose the mounting members. [Solution] In the box body 10, each of the through-hole 22 on the main body side and the through-hole 52 on the lid side is provided with a clamping region F1 in which the shaft portion 72 of the attachment member 71 that clamps the attachment portion 21 on the main body side and the attachment portion 51 on the lid side is positioned, and a retraction region F2 in which the shaft portion 72 is moved from a position that penetrates each of the through-holes 22 on the main body side and the through-hole 52 on the lid side to position the shaft portion 72 at a position different from the clamping region F1. The attachment portion 51 on the lid side is provided with a avoidance portion 82 that avoids interference with the lid pressing portion 73 when the lid 31 is moved in a direction away from the main body 11 with the shaft portion 72 positioned in the retraction region F2.

Description

Technical Field

[0001] The present invention relates to an attachment structure and a box body.

Background Art

[0002] For example, as a box body for internally connecting electrical wiring or the like and housing wiring equipment, there is a box described in Patent Document 1. The box described in Patent Document 1 includes a box body having an opening, a lid body attached to the box body, and a screw member for attaching the lid body to the box body. The box body includes an abutting surface formed so as to surround the opening. A female screw portion is provided on the abutting surface. The four corner portions of the lid body serve as tightening portions, and through holes are formed in each tightening portion corresponding to the female screw portion. Then, when a screw member inserted through the through hole is screwed into the female screw portion, the lid body is attached to the box body, and the opening of the box body is closed to form a box.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the box described in Patent Document 1, when inspecting the electrical wiring housed inside or replacing the wiring equipment and removing the lid body from the box body to open the box body, the screw member is likely to be lost.

Means for Solving the Problems

[0005] The attachment structure for solving the above problem is an attachment structure in a structure formed by moving a first attachment body in the attachment direction and attaching it to a second attachment body, wherein the first attachment body has a first attachment portion having a first through hole that penetrates in the attachment direction, and the second attachment body has a second attachment portion having a second through hole that penetrates in the attachment direction, and a shaft portion is arranged to penetrate through the first through hole and the second through hole, and a first pressing portion provided on one end of the shaft portion in the axial direction presses the first attachment body toward the second attachment body while abutting against the periphery of the first through hole in the first attachment portion, and a second pressing portion provided on the other end of the shaft portion in the axial direction presses the second attachment body toward the first attachment body while abutting against the periphery of the second through hole in the second attachment portion, and the first pressing portion and the second pressing portion are The first attachment body and the second attachment body are attached while the first attachment body and the second attachment body are clamped together by the first and second attachment bodies being brought relatively close to each other in the axial direction, and each of the first and second through holes is provided with a clamping region in which the shaft portion is positioned while the first and second attachment bodies are clamped together, and a retraction region that allows the shaft portion to be positioned at a different location from the clamping region when the clamping is released by relatively separating the first and second attachment bodies in the axial direction, and the first attachment body is provided with a avoidance portion that avoids interference with the first attachment body when the first attachment body is moved in the opposite direction to the attachment direction so as to separate from the second attachment body while the shaft portion is positioned in the retraction region.

[0006] The attachment structure may include a maintenance part that, when the shaft is positioned in the clamping area, contacts at least one of the first pressing part and the second pressing part, restricts the movement of the shaft from the clamping area toward the retraction area, and maintains the state in which the shaft is positioned in the clamping area.

[0007] Regarding the attachment structure, when the clamping is released by relatively separating the first pressing portion and the second pressing portion in the axial direction, it is preferable that the retaining portion can overcome the first pressing portion by moving the shaft portion in the axial direction.

[0008] Regarding the mounting structure, the shaft portion having male threads formed on its outer surface and the first pressing portion are rotatable together, the first pressing portion is the head of a wing bolt including an operating portion that extends away from the shaft portion to perform a screw rotation operation on the shaft portion, the second pressing portion is a nut body that can screw forward and backward along the shaft portion, and the second mounting portion may include a rotation restricting portion that clamps the shaft portion located in the retraction area from the radial outside and restricts the rotation of the shaft portion in the screw rotation direction.

[0009] Regarding the attachment structure, the avoidance portion should be configured to avoid interference with the first pressing portion only when the extension direction of the operating portion in the first pressing portion is set to a specific direction. Regarding the attachment structure, the specific direction is preferably the direction in which the shaft portion moves from the clamping region to the retraction region.

[0010] A box body for solving the above problem comprises a bottomed box-shaped main body with an opening, a lid that closes the opening, and an attachment member for attaching the lid to the main body in the closed state, wherein the main body has a main body-side attachment portion with a through hole formed therein, and the lid has a lid-side attachment portion with a through hole formed therein, and in the closed state with the opening closed by the lid, the main body-side attachment portion and the lid-side attachment portion are in contact, and the main body-side through hole and the lid-side through hole overlap, and the attachment member has a length that can penetrate the main body-side through hole and the lid-side through hole in the closed state, and has a shaft portion with male threads formed on its outer surface, and is provided on one axial end side of the shaft portion and is in contact with the periphery of the main body-side through hole in the main body-side attachment portion and presses the main body toward the lid, and is provided on the other axial end side of the shaft portion, The attachment member comprises a lid pressing portion that abuts against the periphery of the lid through hole in the lid attachment portion and presses the lid toward the main body, wherein the main body pressing portion and the lid pressing portion are displaceable relative to each other in the axial direction and clamp the main body attachment portion and the lid attachment portion by being relatively close to each other in the axial direction, and the main body attachment portion and the lid attachment portion are clamped in the main body through hole and the lid through hole, respectively. The mounting member is provided with a clamping region where the shaft portion is positioned, and a retraction region where the shaft portion is moved from a position through the main body through hole and the lid through hole to a position different from the clamping region, and the lid mounting portion is provided with an avoidance portion to avoid interference with the lid pressing portion when the lid is moved in a direction away from the main body with the shaft portion positioned in the retraction region.

[0011] Regarding the box body, the main body mounting portion is formed to protrude outward from the peripheral wall surrounding the opening in the main body, the main body pressing portion is positioned on the outside of the peripheral wall and screwed onto the male screw, the main body mounting portion includes a restricting portion that extends from the main body mounting portion toward the bottom side of the main body, the restricting portion is positioned at a distance from the outer surface of the peripheral wall of the main body and abuts against the main body pressing portion to restrict the rotation of the main body pressing portion accompanying the screw rotation of the shaft portion, and in a state in which the lid mounting portion and the main body mounting portion are sandwiched by the main body pressing portion and the lid pressing portion, the other end of the shaft portion preferably protrudes toward the bottom side beyond the tip in the extending direction of the restricting portion. [Effects of the Invention]

[0012] This invention makes it less likely for the attachment member to be lost. [Brief explanation of the drawing]

[0013] [Figure 1] Figure 1 is an exploded perspective view showing the box-shaped structure. [Figure 2] Figure 2 is a perspective view showing the box. [Figure 3] Figure 3 is a perspective view showing the attachment point on the main body side from the regulating part side. [Figure 4] Figure 4 is a plan view showing the attachment portion on the main body side from the contact surface side of the main body. [Figure 5] Figure 5 is a cross-sectional view taken along line 5-5 in Figure 2, showing the attachment structure. [Figure 6] Figure 6 is a plan view showing the attachment portion on the lid side from the end face of the lid. [Figure 7] Figure 7 is a plan view showing the attachment structure from the lid attachment side. [Figure 8] Figure 8 is a cross-sectional view showing the attachment member attached to the attachment part on the main body side. [Figure 9] Figure 9 is a cross-sectional view showing the lid placed on the main body. [Figure 10] Figure 10 is a cross-sectional view showing the attachment member in the clamping position. [Figure 11]FIG. 11 is a cross-sectional view showing a state where the attachment member is lifted. [Figure 12] FIG. 12 is a plan view showing the attachment member disposed in the retreat region. [Figure 13] FIG. 13 is a cross-sectional view showing a state where the pressing portion for the lid body has passed through the through hole on the main body side.

MODE FOR CARRYING OUT THE INVENTION

[0014] Hereinafter, an embodiment in which the attachment structure and the box body are embodied will be described. <Box body> As shown in FIGS. 1 and 2, the box body 10 includes a bottomed box-shaped main body 11, a lid body 31, and an attachment member 71. Then, by moving the lid body 31 as the first attachment body in the attachment direction Z and attaching it to the main body 11 as the second attachment body, the box body 10 as a structure is formed. Note that the box body 10 may include a pair of fixing plates 61 that allow the pile 60 for fixing the main body 11 to the ground to pass therethrough.

[0015] <Main body> As shown in FIG. 1, the main body 11 is a bottomed box shape with an opening Sa. The main body 11 includes a rectangular plate-shaped bottom wall 12, a pair of long side walls 13, a pair of short side walls 14, and four main body side attachment portions 21. Each long side wall 13 is erected from each long edge of the bottom wall 12, and each short side wall 14 is erected from each short edge of the bottom wall 12. The pair of long side walls 13 face each other in the short side direction X of the bottom wall 12, and the pair of short side walls 14 face each other in the long side direction Y of the bottom wall 12. The main body 11 includes a rectangular frame-shaped peripheral wall 15 formed by the pair of long side walls 13 and the pair of short side walls 14.

[0016] Each of the pair of long side walls 13 and each of the pair of short side walls 14 has a circular connecting hole 18. The number of connecting holes 18 in the long side walls 13 and short side walls 14 can be changed as appropriate. The connecting holes 18 are closed by knockout sections 19. By removing the knockout sections 19 and opening the connecting holes 18, a connector (not shown) can be connected to the connecting holes 18. In addition, each of the long side walls 13 and short side walls 14 can be connected to a conduit (not shown) via a connector. Electrical wiring connected inside the box 10 is inserted through the conduit. Therefore, the box 10 is used as a wiring box for housing electrical wiring.

[0017] Inside the main body 11, a storage space S is defined by the bottom wall 12 and the peripheral wall 15. At the top of the main body 11, the storage space S is opened by an opening Sa. The peripheral wall 15 surrounds the storage space S, and consequently the opening Sa. The main body 11 is equipped with a flange 16 that surrounds the opening Sa. The flange 16 is formed by extending the upper end of the peripheral wall 15 in a rectangular frame shape.

[0018] Each main body attachment portion 21 protrudes outward from the peripheral wall 15 surrounding the opening Sa in the main body 11. Of the four main body attachment portions 21, two are provided on one long side wall 13, and the remaining two are provided on the other long side wall 13. The two main body attachment portions 21 provided on each long side wall 13 are arranged separately on both sides of the longitudinal direction Y of the bottom wall 12. Therefore, the four main body attachment portions 21 are provided close to the four corners of the main body 11. The main body attachment portions 21 are positioned closer to the bottom wall 12 than the flange 16. A main body through hole 22 is formed in the main body attachment portion 21. Thus, the main body 11 is provided with a main body attachment portion 21 as a second attachment portion, which has a main body through hole 22 that penetrates in the attachment direction Z.

[0019] As shown in Figure 3, the main body mounting portion 21 protrudes from the outer surface of the long side wall 13 in a rectangular plate shape. The main body mounting portion 21 has the mounting direction Z and the opposite direction as the plate thickness direction. The main body mounting portion 21 has a main body contact surface 21a and a main body end surface 21b that are opposite to each other in the plate thickness direction. The main body contact surface 21a and the main body end surface 21b are parallel to each other.

[0020] The main body mounting portion 21 is equipped with a restricting portion 24. The restricting portion 24 extends in the mounting direction Z from the main body side end face 21b of the main body mounting portion 21 toward the bottom wall 12 side of the main body 11. A main body side recess 24a is defined inside the restricting portion 24. When viewed in the thickness direction of the main body mounting portion 21, the restricting portion 24 opens on the bottom wall 12 side in the mounting direction Z. A portion of the main body side end face 21b that surrounds the main body side through hole 22 is exposed to the main body side recess 24a inside the restricting portion 24.

[0021] The restricting portion 24 has opposing restricting surfaces 24b in the short-side direction X of the bottom wall 12. The pair of opposing restricting surfaces 24b are parallel to each other. The inside of the restricting portion 24 communicates with the through hole 22 on the main body side. In the restricting portion 24, the opening width W in the short-side direction X of the bottom wall 12 is constant in the longitudinal direction Y of the bottom wall 12, except for both ends in the longitudinal direction Y of the restricting portion 24. The restricting portion 24 is also positioned at a distance from the outer surface of the peripheral wall 15 of the main body 11.

[0022] The main body attachment portion 21 is reinforced by the main body rib 25. The main body rib 25 protrudes outward from the outer surface of the long side wall 13 and extends in the attachment direction Z below the flange 16. The main body rib 25 is provided at both ends of the main body attachment portion 21 in the longitudinal direction Y of the bottom wall 12. In addition, the portion of the main body rib 25 that connects to the main body end face 21b is connected to both ends of the restricting portion 24 in the longitudinal direction Y of the bottom wall 12.

[0023] The main body attachment portion 21 has a first end portion 211 on the side of the other main body attachment portion 21 aligned in the longitudinal direction Y of the bottom wall 12, and a second end portion 212 on the opposite side of the first end portion 211. The second end portion 212 is the end of the main body attachment portion 21 that is closer to the short side wall 14 in the longitudinal direction Y.

[0024] The through-hole 22 formed in the main body attachment portion 21 penetrates the main body attachment portion 21 in the thickness direction and is open at both the main body contact surface 21a and the main body end surface 21b. As shown in Figure 4, when the main body mounting portion 21 is viewed in the thickness direction, i.e., the mounting direction Z, the main body through hole 22 is an elongated hole extending in the longitudinal direction Y of the bottom wall 12. Both ends of the main body through hole 22 in the longitudinal direction are formed in an arc shape. The main body through hole 22 is formed with a first main body through portion 221, a second main body through portion 222, and a third main body through portion 223 arranged in a row from the first end 211 to the second end 212.

[0025] Viewing the main body attachment portion 21 in the direction of the plate thickness is considered a plan view of the main body attachment portion 21. The first main body through portion 221 is a semicircular portion with an arc shape on the first end 211 side in a plan view of the main body attachment portion 21. The second main body through portion 222 is a portion where the first end 211 side connects to the first main body through portion 221, and the second end 212 side connects to the third main body through portion 223 in a plan view of the main body attachment portion 21. The second main body through portion 222 is a portion that widens slightly from the first end 211 side to the second end 212 side. The third main body through portion 223 is a portion where the second end 212 side has an arc shape, and the first end 211 side connects to the second main body through portion 222 in a plan view of the main body attachment portion 21.

[0026] The opening width of the first main body side penetration 221 in the short-side direction X of the bottom wall 12 at its maximum is described as the first main body side opening width R1. The opening width of the second main body side penetration 222 in the short-side direction X of the bottom wall 12 at its maximum is described as the second main body side opening width R2. The opening width of the third main body side penetration 223 in the short-side direction X of the bottom wall 12 at its maximum is described as the third main body side opening width R3. The first main body side opening width R1 is smaller than the second main body side opening width R2 and the third main body side opening width R3.

[0027] <Lid> As shown in Figures 1 and 2, the lid 31 comprises a rectangular plate-shaped top plate 32, a frame portion 33 extending from the edge of the top plate 32, and four lid-side attachment portions 51.

[0028] The top plate 32 of the lid 31 closes the opening Sa. When the opening Sa is closed by the top plate 32, the frame portion 33 is positioned outside the flange 16. The frame portion 33 comprises a pair of long plate portions 34 and a pair of short plate portions 35. Each long plate portion 34 extends from each long edge of the top plate 32, and each short plate portion 35 extends from each short edge of the top plate 32. The short side of the top plate 32 coincides with the short side X of the bottom wall 12, and is therefore referred to as the short side X of the top plate 32. The long side of the top plate 32 coincides with the long side Y of the bottom wall 12, and is therefore referred to as the long side Y of the top plate 32. The pair of long plate portions 34 face the short side X of the top plate 32, and the pair of short plate portions 35 face the long side Y of the top plate 32.

[0029] Each of the long plate sections 34 and each of the short plate sections 35 is provided with a handle 36. The handles 36 are located in the center of each long plate section 34 in the longitudinal direction Y of the top plate 32, and in the center of each short plate section 35 in the short direction X of the top plate 32. The handles 36 protrude outward from each of the long plate sections 34 and short plate sections 35 toward the lid 31. An operator handling the box 10 can use the handles 36 to move the lid 31 relative to the main body 11.

[0030] <Attachment part on the lid side> Of the four lid-side attachment parts 51, two are provided on one long plate section 34, and the remaining two are provided on the other long plate section 34. The two lid-side attachment parts 51 provided on each long plate section 34 are positioned separately on both sides in the longitudinal direction Y of the top plate 32, and sandwich the handle 36 provided on the long plate section 34. The four lid-side attachment parts 51 are provided close to the four corners of the lid 31. Each lid-side attachment part 51 is formed by protruding outward from the frame section 33 surrounding the top plate 32 of the lid 31. When the opening Sa is closed by the top plate 32, the main body-side attachment part 21 and the lid-side attachment part 51 overlap.

[0031] As shown in Figure 5, the lid-side attachment portion 51 protrudes in a rectangular plate shape from the outer surface of the long plate portion 34. The lid-side attachment portion 51 has the attachment direction Z and the opposite direction as the plate thickness direction. The lid-side attachment portion 51 has a lid-side contact surface 51a and a lid-side end surface 51b that are opposite to each other in the plate thickness direction. The lid-side contact surface 51a and the lid-side end surface 51b are parallel to each other. In the closed state, when the opening Sa is closed by the top plate 32 of the lid 31, a part of the lid-side contact surface 51a contacts the main body-side contact surface 21a of the main body-side attachment portion 21, and the main body-side attachment portion 21 supports the lid-side attachment portion 51. In this way, the lid 31 is supported by the main body 11. In the box body 10, the back surface of the top plate 32 of the lid 31 may be supported by the end surface of the flange 16 on the main body 11. In this case, a waterproof packing may be interposed between the underside of the top plate 32 and the end face of the flange 16.

[0032] As shown in Figures 1 and 2, each long plate section 34 is provided with lid-side ribs 55 that connect to each lid-side attachment section 51 on both longitudinal ends. The lid-side ribs 55 are located on the opposite side of the handle 36, with the lid-side attachment section 51 in between. The lid-side ribs 55 slope downwards from the top plate 32 towards the tip of the frame section 33.

[0033] As shown in Figure 6, the lid-side attachment portion 51 has a first end portion 511 on the handle 36 side in the longitudinal direction Y of the top plate 32, and a second end portion 512 on the lid-side rib 55 side. A lid-side through hole 52 is formed in the lid-side attachment portion 51. Therefore, the lid 31 has a lid-side attachment portion 51 as a first attachment portion, which has a lid-side through hole 52 formed therein as a first through hole that penetrates in the attachment direction Z. The lid-side through hole 52 penetrates the lid-side attachment portion 51 in the thickness direction and is open at both the lid-side contact surface 51a and the lid-side end surface 51b.

[0034] Viewing the lid attachment portion 51 in the thickness direction, the lid through hole 52 is an elongated hole extending in the longitudinal direction Y of the top plate 32. The lid through hole 52 opens toward the handle 36 at the first end 511 and opens at a position spaced apart from the lid rib 55 at the second end 512. The lid through hole 52 is formed in a row from the first end 511 toward the second end 512, with a first lid through portion 521, a second lid through portion 522, a third lid through portion 523, and a fourth lid through portion 524.

[0035] Viewing the lid-side attachment portion 51 in the direction of the plate thickness is considered a plan view of the lid-side attachment portion 51. The first lid-side through portion 521 is a rectangular portion in the plan view of the lid-side attachment portion 51 with its longitudinal direction Y extending along the longitudinal direction. The second lid-side through portion 522 is a circular portion in the plan view of the lid-side attachment portion 51. The third lid-side through portion 523 is a portion wider than the first lid-side through portion 521 in the plan view of the lid-side attachment portion 51. The fourth lid-side through portion 524 is a portion in the plan view of the lid-side attachment portion 51 where the opposite side of the connection point with the third lid-side through portion 523 is arc-shaped. The boundary between the first lid-side through portion 521 and the second lid-side through portion 522 is the portion where the lid-side through hole 52 is arc-shaped. The second lid-side through portion 522 is the portion sandwiched between the first lid-side through portion 521 and the third lid-side through portion 523 in the longitudinal direction Y. The boundary between the second lid-side through portion 522 and the third lid-side through portion 523 is the portion where the lid-side through hole 52 forms an arc. The third lid-side through portion 523 is the portion sandwiched between the second lid-side through portion 522 and the fourth lid-side through portion 524 in the longitudinal direction Y. The boundary between the third lid-side through portion 523 and the fourth lid-side through portion 524 is the boundary between the retention portion 57 and the clamping projection 54, which will be described later.

[0036] The opening width of the first lid-side penetration 521 in the short-side direction X of the top plate 32 is described as the first lid-side opening width W1, and the opening width of the second lid-side penetration 522 at its widest point is described as the second lid-side opening width W2. In addition, the opening width of the third lid-side penetration 523 in the short-side direction X of the top plate 32 at its widest point is described as the third lid-side opening width W3, and the opening width of the fourth lid-side penetration 524 at its widest point is described as the fourth lid-side opening width W4. The second lid-side opening width W2 is greater than the first lid-side opening width W1, the third lid-side opening width W3, and the fourth lid-side opening width W4. Furthermore, the second lid-side opening width W2 and the third lid-side opening width W3 are greater than the first body-side opening width R1 and the second body-side opening width R2.

[0037] In the closed state, where the opening Sa of the main body 11 is closed by the cover 31, a portion of the cover-side contact surface 51a abuts against the main body-side contact surface 21a of the main body-side attachment portion 21, and the main body-side through hole 22 and the cover-side through hole 52 overlap. In the closed state, the first main body-side through portion 221 and the second main body-side through portion 222, and the second cover-side through portion 522 and the third cover-side through portion 523 overlap in the attachment direction Z, and the third main body-side through portion 223 and the fourth cover-side through portion 524 overlap in the attachment direction Z.

[0038] The lid-side attachment portion 51 is provided with a clamping projection 54 that protrudes from the lid-side end face 51b. The clamping projection 54 protrudes from the lid-side end face 51b along the fourth lid-side penetration portion 524 and extends in a substantially arc shape along the fourth lid-side penetration portion 524. The tip surface of the clamping projection 54 in the direction of protrusion from the lid-side end face 51b is pressed by the attachment member 71, which will be described later.

[0039] Furthermore, the lid-side attachment portion 51 is provided with an edge portion 56 that protrudes from the lid-side end face 51b. The edge portion 56 extends linearly in the longitudinal direction Y of the top plate 32 along the first lid-side penetration portion 521 and also extends along the arc of the second lid-side penetration portion 522. In addition, the edge portion 56 extends linearly in the longitudinal direction Y of the top plate 32 from the arc of the second lid-side penetration portion 522 along the third lid-side penetration portion 523. Moreover, on both sides of the top plate 32 in the short direction X, the edge portion 56 is bent so as to extend in the short direction X toward the clamping projection 54. At the boundary between the third lid-side penetration portion 523 and the fourth lid-side penetration portion 524, the edge portion 56 extends linearly in the short direction X of the top plate 32.

[0040] The projection dimension of the edge portion 56 from the lid-side end face 51b is greater than the projection dimension of the clamping projection 54 from the lid-side end face 51b. Therefore, a step is formed between the edge portion 56 and the clamping projection 54 at the boundary between the third lid-side penetration portion 523 and the fourth lid-side penetration portion 524. The step is a maintenance portion 57 that restricts the movement of the attachment member 71 and maintains the attachment member 71 in the position of the fourth lid-side penetration portion 524. The maintenance portion 57 is formed by the portion of the edge portion 56 that is higher than the clamping projection 54.

[0041] The lid-side attachment portion 51 includes an inclined surface 51c located at the third lid-side penetration portion 523. The inclined surface 51c slopes downward from the portion of the edge 56 that is bent so as to extend in the short direction X toward the clamping projection 54 toward the second lid-side penetration portion 522.

[0042] <Attachment component> As shown in Figures 1, 7, and 8, the mounting member 71 comprises a shaft portion 72, a lid pressing portion 73 as a first pressing portion, and a main body pressing portion 79 as a second pressing portion. In the mounting member 71, the parts other than the main body pressing portion 79 are wing bolts. The main body pressing portion 79 is a nut.

[0043] A male screw 72a is formed on the outer surface of the shaft portion 72. The axial length of the shaft portion 72 is greater than the sum of the dimension of the main body side attachment portion 21 in the attachment direction Z and the dimension of the lid side attachment portion 51 in the attachment direction Z. Therefore, the shaft portion 72 has a length that allows it to pass through both the main body side through hole 22 and the lid side through hole 52 in the closed state described above.

[0044] As shown in Figure 7, the diameter N1 of the shaft portion 72 is slightly smaller than the opening width R3 on the third body side and the opening width W4 on the fourth lid side. Therefore, the shaft portion 72 can pass through the through portion 524 on the fourth lid side and the through portion 223 on the third body side in the mounting direction Z. Also, the diameter N1 of the shaft portion 72 is smaller than the opening width R2 on the second body side, the opening width W3 on the third lid side and the opening width W2 on the second lid side. Therefore, the shaft portion 72 can pass through the through portion 522 on the second lid side, the through portion 523 on the third lid side, and the through portion 222 on the second body side in the mounting direction Z.

[0045] The diameter N1 of the shaft portion 72 is slightly larger than the opening width R1 on the first body side. Therefore, the first body side through portion 221 clamps the shaft portion 72, which is positioned in the first body side through portion 221, from the radial outside and restricts the rotation of the shaft portion 72 in the screw rotation direction. Accordingly, the body side attachment portion 21 is provided with a rotation restricting portion 81 on the inner surface of the first body side through portion 221 to restrict the rotation of the shaft portion 72.

[0046] The lid pressing portion 73 is provided on one axial end of the shaft portion 72 and is integrally formed with the shaft portion 72. Therefore, in the mounting member 71, the shaft portion 72, which has a male screw 72a formed on its outer surface, and the lid pressing portion 73 are rotatable together. The lid pressing portion 73 is the head of a wing bolt, including an operating portion 75 that extends away from the shaft portion 72 to perform a screw rotation operation on the shaft portion 72.

[0047] The lid pressing section 73 includes a frustoconical pressing section body 74 and a pair of operating sections 75 extending from the pressing section body 74. The pressing part body 74 has a contact surface 74a in the axial direction of the shaft portion 72, closer to the shaft portion 72 than the operating portion 75. The contact surface 74a is an annular surface. When the main body side attachment portion 21 and the lid side attachment portion 51 are clamped by the attachment member 71, the contact surface 74a is the surface that contacts the retention portion 57.

[0048] The operating section 75 extends radially from the shaft section 72 in a plate-like shape. The pair of operating sections 75 extend in opposite directions, sandwiching the pressing section body 74. The operator can then operate the operating section 75 by pinching or otherwise manipulating it, thereby rotating the shaft section 72 together with the lid pressing section 73.

[0049] The main body pressing portion 79 is provided on the other axial end of the shaft portion 72. Specifically, the main body pressing portion 79 is positioned outside the peripheral wall 15 and is screwed onto the male thread 72a of the shaft portion 72. The main body pressing portion 79 is screwable forward and backward along the shaft portion 72. The main body pressing portion 79 is a hexagonal tube with an internal thread. Of the six sides of the main body pressing portion 79, the two sides located on the radial sides of the internal thread are parallel to each other.

[0050] The pressing portion 79 for the main body and the pressing portion 73 for the lid can be displaced relative to each other in the axial direction of the shaft portion 72 by adjusting the relative amount of screw rotation of the shaft portion 72. The mounting member 71 can rotate the shaft portion 72 to bring the pressing portion 79 for the main body and the pressing portion 73 for the lid closer together in the axial direction, while rotating the shaft portion 72 to move the pressing portion 79 for the main body and the pressing portion 73 for the lid further apart in the axial direction.

[0051] A fall prevention member 78 is attached to the shaft portion 72 of the attachment member 71. The fall prevention member 78 engages with the male screw 72a of the shaft portion 72 and rotates integrally with the shaft portion 72. The main body pressing portion 79 is screwed onto the shaft portion 72 at a position between the lid pressing portion 73 and the fall prevention member 78.

[0052] As shown in Figure 8, when the lid 31 is removed from the main body 11, the attachment member 71 is attached to the main body side attachment portion 21 and then to the main body 11. The main body pressing portion 79 of the attachment member 71 is housed in the main body side recess 24a of the restricting portion 24 and is positioned on the main body side end face 21b of the main body side attachment portion 21. The lid pressing portion 73 of the attachment member 71 is positioned on the main body side contact surface 21a of the main body side attachment portion 21. The attachment member 71 is prevented from falling out of the main body side through hole 22 by the pressing portion body 74 contacting the clamping projection 54 or edge portion 56, and is placed on the main body side attachment portion 21.

[0053] Furthermore, the attachment member 71 can position its shaft portion 72 at any of the first to third main body through-holes 221 to 223. In other words, the attachment member 71 can be freely displaced in the longitudinal direction of the main body through-hole 22, that is, in the longitudinal direction Y of the bottom wall 12.

[0054] <Fixed plate> As shown in Figure 1, a pair of fixing plates 61 are fixed to the bottom wall 12 of the main body 11. Each fixing plate 61 is fixed to the outer surface of the bottom wall 12, closer to the pair of short side walls 14. Each fixing plate 61 has multiple through holes 62 formed therein for the piles 60 to pass through.

[0055] <How to attach the main body and lid> Next, we will explain how to attach the lid 31 to the main body 11. As shown in Figure 8, the lid pressing portion 73 of the attachment member 71 is placed on the edge portion 56, and the main body pressing portion 79 is positioned at a location spaced downward from the main body side end face 21b. The operator operates the operating portion 75 to rotate the shaft portion 72, so that the pair of operating portions 75 and the pressing portion body 74 are aligned in the longitudinal direction Y of the bottom wall 12, that is, in the longitudinal direction of the main body side through hole 22. The operator also operates the operating portion 75 to position the shaft portion 72 in the first main body side through portion 221. At this time, since the diameter N1 of the shaft portion 72 is slightly larger than the opening width R1 of the first main body side, the shaft portion 72 is held in a state where it is sandwiched in the rotation restricting portion 81. In other words, the shaft portion 72 is held in the main body side attachment portion 21 in a state where its rotation is restricted by the rotation restricting portion 81.

[0056] The worker grasps or holds the handle 36 of the lid 31 and moves the lid 31 in the attachment direction Z toward the main body 11. At this time, the worker aligns the second lid-side through-hole 522 with the pressing part body 74. The worker also aligns one of the pair of operating parts 75 with the first lid-side through-hole 521 and the other operating part 75 with the third lid-side through-hole 523. As shown in Figure 9, the lid pressing part 73 passes through the lid-side through-hole 52 without interfering with the lid-side attachment part 51.

[0057] Then, as shown in Figure 10, the operator operates the control unit 75 to lift the attachment member 71, positioning the entire lid pressing portion 73 above the edge portion 56, and moving the attachment member 71 toward the third body-side penetration portion 223 and the fourth lid-side penetration portion 524. As a result, the shaft portion 72 moves in the longitudinal direction Y of the bottom wall 12 and is positioned toward the third body-side penetration portion 223 and the fourth lid-side penetration portion 524. When the attachment member 71 is moved, the body pressing portion 79, whose rotation is restricted by the restricting surface 24b of the body-side recess 24a, moves toward the third body-side penetration portion 223 and the fourth lid-side penetration portion 524 and is positioned below the third body-side penetration portion 223 and the fourth lid-side penetration portion 524. The pressing portion body 74 also faces the clamping projection 54.

[0058] Next, the operator rotates the attachment member 71 by operating the control unit 75. As the attachment member 71 rotates, the restricting surface 24b of the restricting unit 24 comes into contact with the side surface of the main body pressing unit 79, restricting the rotation of the main body pressing unit 79 in conjunction with the screw rotation of the shaft unit 72. As a result, as the attachment member 71 rotates, the main body pressing unit 79 is pulled towards the lid pressing unit 73. Then, as the lid pressing unit 73 and the main body pressing unit 79 move relatively closer in the axial direction of the shaft unit 72, the main body attachment unit 21 and the lid attachment unit 51 are clamped between the lid pressing unit 73 and the main body pressing unit 79. Therefore, in the attachment member 71, the main body pressing portion 79 and the lid pressing portion 73 are relatively displaceable in the axial direction of the shaft portion 72, and are able to clamp the main body side attachment portion 21 and the lid side attachment portion 51 by being relatively close to each other.

[0059] Then, by performing the above procedure on all four attachment members 71, the main body 11 and the lid 31 are attached inseparably by the four attachment members 71. <Mounting structure> As shown in Figure 2, in the closed state, the opening Sa of the main body 11 is closed by the top plate 32 of the lid 31, and the main body 11 and the lid 31 are attached by the attachment member 71. In the box body 10, the connection holes 18 and knockout portions 19 provided in the main body 11 are located below the handle 36. In other words, the handle 36 is located above the connection holes 18 and knockout portions 19. Although not shown, a conduit is connected to the open connection hole 18 via a connector, and the electrical wiring housed inside the box body 10 is inserted inside the connector and conduit.

[0060] As shown in Figure 5, the main body pressing portion 79 of the attachment member 71 abuts against the main body end face 21b, which is the area around the main body through hole 22 in the main body attachment portion 21, and presses the main body attachment portion 21 toward the lid attachment portion 51. As a result, the main body pressing portion 79 presses the main body 11 toward the lid 31.

[0061] Furthermore, the lid pressing portion 73 of the attachment member 71 presses the lid-side attachment portion 51 toward the main body attachment portion 21 while contacting the clamping projection 54, which is the periphery of the lid-side through hole 52, at the pressing portion body 74. As a result, the lid pressing portion 73 presses the lid 31 toward the main body 11.

[0062] Furthermore, as shown in Figures 7 and 9, the shaft portion 72 is positioned in the fourth lid-side through-hole 524 of the lid-side through-hole 52, and in the third body-side through-hole 223 and a portion of the second body-side through-hole 222 of the body-side through-hole 22, in a state where the body-side attachment portion 21 and the lid-side attachment portion 51 are sandwiched by the attachment member 71. Therefore, the fourth lid-side through-hole 524, the second body-side through-hole 222, and the third body-side through-hole 223 form a clamping region F1 in which the shaft portion 72 is positioned in a state where the lid-side attachment portion 51 and the body-side attachment portion 21 are sandwiched. Thus, the lid-side through-hole 52 is provided with a fourth lid-side through-hole 524 as a clamping region F1 in which the shaft portion 72 of the attachment member 71 that sandwiches the body-side attachment portion 21 and the lid-side attachment portion 51 is positioned. Furthermore, the through-hole 22 on the main body side is provided with a second through-hole 222 and a third through-hole 223 on the main body side, which serve as a clamping region F1 where the shaft portion 72 of the attachment member 71 that clamps the main body side attachment portion 21 and the lid side attachment portion 51 is positioned.

[0063] On the other hand, the first body-side through-hole 221 and the second body-side through-hole 222 in the body-side through-hole 22 are retraction areas F2 located at positions different from the clamping area F1. Similarly, the first to third lid-side through-holes 52 to 523 in the lid-side through-hole 52 are retraction areas F2 located at positions different from the clamping area F1. Retraction areas F2 are areas where the shaft portion 72 is moved from its position through the body-side through-hole 22 and the lid-side through-hole 52 to position the shaft portion 72 at a position different from the clamping area F1. Therefore, the box body 10 having a mounting structure for the body 11 and the lid 31 is provided with a clamping area F1 and a retraction area F2. The direction from the clamping area F1 to the retraction area F2 is the direction from the second ends 212, 512 of the body-side mounting portion 21 and the lid-side mounting portion 51 to the first ends 211, 511. In other words, the direction from the clamping region F1 to the retraction region F2 is the direction from the end of the longitudinal direction Y of the bottom wall 12 toward the center in two attachment structures adjacent to each other in the longitudinal direction Y of the bottom wall 12.

[0064] Furthermore, when the shaft portion 72 is positioned in the clamping region F1, the maintenance portion 57 contacts and even presses against the contact circumferential surface 74a of the lid pressing portion 73, thereby restricting the movement of the shaft portion 72 from the clamping region F1 toward the retraction region F2 and maintaining the state in which the shaft portion 72 is positioned in the clamping region F1. In order to press the contact circumferential surface 74a against the maintenance portion 57, the outer diameter of the pressing portion body 74 at the contact circumferential surface 74a is larger than the opening width W4 on the fourth lid side. The box body 10, which has a mounting structure for the main body 11 and the lid 31, has a maintenance portion 57 that maintains the state in which the shaft portion 72 is positioned in the clamping region F1.

[0065] Furthermore, when the main body pressing portion 79 and the lid pressing portion 73 are clamping the lid-side attachment portion 51 and the main body-side attachment portion 21, the other end of the shaft portion 72 protrudes towards the bottom wall 12 side more than the tip of the regulating portion 24 in the extending direction.

[0066] As shown in Figure 5, in the state in which the attachment structure is formed, the lid 31 comprises a top plate 32 that covers the opening Sa and a frame portion 33 that hangs down from the top plate 32. The frame portion 33 is annular in shape and overlaps with the outer side of the peripheral wall 15 of the main body 11.

[0067] <How to remove the lid> Next, we will explain how to remove the lid 31 from the main body 11. As shown in Figure 10, the attachment member 71 has its shaft portion 72 positioned in the clamping region F1, and attaches the main body 11 and the lid 31 in a way that makes separation impossible.

[0068] The operator operates the control unit 75 to rotate the mounting member 71 in a direction in which the main body pressing part 79 is screwed back relative to the lid pressing part 73. At this time, since the rotation of the main body pressing part 79 is restricted by contact with the regulating surface 24b, the main body pressing part 79 moves away from the lid pressing part 73 as the mounting member 71 rotates. In other words, the lid pressing part 73 and the main body pressing part 79 are displaced relative to each other in the axial direction of the shaft part 72. As the lid pressing part 73 and the main body pressing part 79 move away from each other, the state in which the main body side mounting part 21 and the lid side mounting part 51 are clamped by the lid pressing part 73 and the main body pressing part 79 is released. In addition, the main body pressing part 79 is positioned below the main body side end face 21b.

[0069] Next, as shown in Figure 11, the worker grasps the lid pressing portion 73 and lifts the attachment member 71. At this time, the attachment member 71 can be lifted until the main body pressing portion 79 contacts the main body end face 21b. While lifting the attachment member 71, the worker moves the attachment member 71 toward the first main body side penetration portion 221 and the first lid side penetration portion 521, that is, toward the retraction area F2. As a result, the lid pressing portion 73 moves upward away from the clamping projection 54 and also moves upward away from the maintenance portion 57. Therefore, the maintenance portion 57 can overcome the lid pressing portion 73 and the main body pressing portion 79 by moving the shaft portion 72 in the axial direction while the lid pressing portion 73 and the main body pressing portion 79 are relatively displaced in the direction of separation.

[0070] The shaft portion 72 moves in the longitudinal direction Y of the bottom wall 12 to a position different from the clamping area F1, i.e., in the retraction area F2. In this embodiment, as shown in Figure 12, the operator positions the pressing body 74 at the second lid-side through-hole 522 and the shaft portion 72 at the first body-side through-hole 221 and the second lid-side through-hole 522. The amount of movement of the shaft portion 72 between the clamping area F1 and the retraction area F2 is the same as the distance between the ends of the body-side through-hole 22 in the longitudinal direction Y. In other words, the shaft portion 72 can move from the clamping area F1 to the retraction area F2, or from the retraction area F2 to the clamping area F1, by the length of the body-side through-hole 22 in the longitudinal direction Y. The amount of movement of the shaft portion 72 is greater than the gap K between the circumferential wall 15 and the frame portion 33. In other words, the amount of movement of the lid 31 relative to the main body 11 due to the gap K between the peripheral wall 15 and the frame portion 33 is smaller than the amount of movement of the shaft portion 72 between the clamping region F1 and the retraction region F2.

[0071] Next, the operator aligns one of the pair of operating parts 75 with the first lid-side through-hole 521 and the other operating part 75 with the third lid-side through-hole 523. At this time, if the extension direction of the pair of operating parts 75 in the lid pressing part 73 is set to a specific direction, this specific direction is the direction in which the longitudinal side of the lid-side through-hole 52 extends, that is, the longitudinal direction Y of the bottom wall 12. As described above, the shaft part 72 moves from the clamping area F1 to the retraction area F2 in the longitudinal direction Y of the bottom wall 12. The longitudinal direction Y of the bottom wall 12 is the direction in which the longitudinal side of the lid-side through-hole 52 extends. Therefore, the specific direction in the lid pressing part 73 coincides with the direction in which the shaft part 72 moves from the clamping area F1 to the retraction area F2.

[0072] As shown in Figure 13, when the operator lifts the lid 31, one of the pair of operating parts 75 passes through the first lid-side through-hole 521, while the other operating part 75 passes through the third lid-side through-hole 523. The pressing part body 74 also passes through the second lid-side through-hole 522. As a result, the lid pressing part 73 passes through the lid-side through-hole 52, allowing the lid 31 to be lifted without the pressing part 73 interfering with the lid-side attachment part 51. Therefore, the lid-side attachment part 51 is provided with an avoidance part 82 that avoids interference with the lid-side attachment part 51 when the lid 31 is moved in the opposite direction to the attachment direction Z so that it is separated from the main body 11, with the shaft part 72 positioned in the retraction area F2. The avoidance portion 82 is formed from the inner surface that defines the through-hole 52 on the lid side, specifically the inner surface that defines the first through-hole 521 on the lid side, the inner surface that defines the second through-hole 522 on the lid side, and the inner surface that defines the third through-hole 523 on the lid side. In other words, the avoidance portion 82 can be said to be the inner surface that defines the through-hole 52 on the lid side. Therefore, the avoidance portion 82 can avoid interference with the pressing portion 73 on the lid only when the extension direction of the operating portion 75 on the pressing portion 73 on the lid is set to a specific direction.

[0073] Then, when the lid 31 is removed from the main body 11, the opening Sa of the main body 11 is opened. At this time, as shown in Figure 8, each attachment member 71 remains attached to the main body side contact surface 21a with the lid pressing portion 73 placed on it, and in a state that prevents it from falling off the main body 11.

[0074] [Effects of the Embodiment] According to this embodiment, the following effects can be obtained. (1) The through-hole 22 on the main body side and the through-hole 52 on the lid side are each provided with a clamping area F1 and a retraction area F2. In addition, the attachment part 51 on the lid side is provided with an avoidance part 82. Therefore, when the lid 31 is moved away from the main body 11 with the shaft part 72 positioned in the retraction area F2, the avoidance part 82 of the through-hole 52 on the lid side prevents interference between the pressing part 73 for the lid and the attachment part 51 on the lid side. Thus, the box body 10 can be removed from the lid 31 while the attachment member 71 remains attached to the main body 11. As a result, the attachment member 71 is not removed from the main body 11, making it difficult to lose the attachment member 71.

[0075] (2) The lid-side attachment portion 51 is equipped with a retention portion 57. The retention portion 57, when the shaft portion 72 is positioned in the clamping region F1, contacts and even presses against the contact circumferential surface 74a of the lid pressing portion 73, thereby restricting the movement of the shaft portion 72 toward the retraction region F2. As a result, it is easy to maintain the state in which the attachment member 71 clamps the main body-side attachment portion 21 and the lid-side attachment portion 51, that is, the state in which the lid 31 is attached to the main body 11. As a result, it is possible to suppress the lid 31 from easily coming off the main body 11.

[0076] (3) With the shaft portion 72 positioned in the clamping region F1, the contact circumferential surface 74a of the lid pressing portion 73 is in contact with and even pressing against the clamping projection 54. The retaining portion 57 is positioned higher than the clamping projection 54. The attachment member 71 can be lifted by axially separating the relative positions of the lid pressing portion 73 and the main body pressing portion 79. As a result, the lid pressing portion 73 can overcome the retaining portion 57, and the attachment member 71 can be released from the movement restriction imposed by the retaining portion 57. Therefore, the box body 10 can easily move the shaft portion 72 from the clamping region F1 to the retraction region F2 by relatively separating the lid pressing portion 73 and the main body pressing portion 79.

[0077] (4) The opening width R1 on the first main body side is slightly smaller than the diameter N1 of the shaft portion 72. Furthermore, a rotation restricting portion 81 that presses against the shaft portion 72 is provided in the main body side attachment portion 21 at the portion defining the first main body side through portion 221. Therefore, when the shaft portion 72 is positioned in the retraction area F2, the rotation restricting portion 81 can suppress the rotation of the attachment member 71. As a result, when removing the lid 31 from the main body 11, the position of the lid pressing portion 73 can be positioned so that it does not move from a position that allows it to pass through the lid side through hole 52. Also, after removing the lid 31 from the main body 11, the position of the lid pressing portion 73 can be maintained by the rotation restricting portion 81. For this reason, when reattaching the lid 31 to the main body 11, it is not necessary to adjust the position of the lid pressing portion 73 to a position that allows it to pass through the lid side through hole 52. As a result, the box body 10 makes it easy to attach and detach the main body 11 and the lid 31.

[0078] (5) The through-hole 52 on the lid side is an elongated hole that extends in the longitudinal direction Y of the bottom wall 12. For this reason, in order for the lid pressing part 73 to pass through the through-hole 52 on the lid side, the lid pressing part 73 must be positioned in the retraction area F2 such that the pair of operating parts 75 are aligned in a specific direction in the longitudinal direction Y. In other words, interference with the lid pressing part 73 is avoided by the avoidance part 82 only when the pair of operating parts 75 are extended in a specific direction. Therefore, if the pair of operating parts 75 are not aligned in a specific direction, the lid pressing part 73 will interfere with the lid pressing part 73, so the attachment member 71 can maintain the state in which the main body 11 and the lid 31 are attached.

[0079] (6) In order to avoid interference between the lid attachment portion 51 and the lid pressing portion 73, the pair of operating portions 75 are positioned in a specific direction. This specific direction is the same as the direction in which the shaft portion 72 is moved from the clamping area F1 towards the retraction area F2. Furthermore, when the box body 10 is positioned with the pair of operating portions 75 in a specific direction and the shaft portion 72 positioned in the clamping area F1, the pressing portion body 74 contacts the clamping projection 54, and the pressing portion 79 for the main body contacts the main body attachment portion 21. As a result, the attachment member 71 can attach the lid 31 to the main body 11. Thus, if the pair of operating portions 75 are positioned in a specific direction, after moving the shaft portion 72 from the clamping area F1 towards the retraction area F2, the lid 31 can be removed from the main body 11 without rotating the attachment member 71, as the avoidance portion 82 prevents interference between the lid attachment portion 51 and the lid pressing portion 73.

[0080] (7) When the shaft portion 72 is positioned in the retraction area F2, the rotation restricting portion 81 can suppress the rotation of the shaft portion 72. As a result, the orientation of the operating portion 75 on the lid pressing portion 73, which rotates integrally with the shaft portion 72, can be maintained in a specific orientation. Therefore, when the lid 31 is removed from the main body 11 and then reattached to the main body 11, there is no need to adjust the orientation of the pair of operating portions 75, making it easier to reattach the lid 31 to the main body 11. In addition, although the box body 10 is provided with attachment structures in four places, the rotation restricting portion 81 maintains the position of the operating portion 75 in a specific direction in all attachment structures, making it easier to attach the lid 31 to the main body 11.

[0081] (8) When the lid attachment portion 51 and the main body attachment portion 21 are clamped by the lid pressing portion 73 and the main body pressing portion 79, the other end of the shaft portion 72 protrudes toward the bottom wall 12 side more than the tip of the restricting portion 24 in the extending direction. Therefore, when the lid attachment portion 51 and the main body attachment portion 21 are clamped by the attachment member 71, the worker can grasp both ends of the lid pressing portion 73 and the other end of the shaft portion 72, making it easy to move between the clamping area F1 and the retraction area F2.

[0082] (9) The amount of movement of the lid 31 relative to the main body 11 due to the gap K between the peripheral wall 15 and the frame portion 33 is smaller than the amount of movement of the shaft portion 72 between the clamping region F1 and the retraction region F2. Therefore, even if the lid 31 moves relative to the main body 11 due to the gap K, interference between the lid pressing portion 73 and the lid-side through hole 52 can be avoided.

[0083] (10) The box body 10 is a wiring box for housing electrical wiring. In addition, a conduit is connected to the connection hole 18 removed from the knockout section 19 via a connector, and electrical wiring is inserted through the conduit and connector. A handle 36 is positioned above the connection hole 18 and the knockout section 19, and the handle 36 protrudes outward from the lid body 31. As a result, the handle 36 covers the connector from above, and the handle 36 prevents the connector from being stepped on from above.

[0084] <Example of changes> The above embodiment can be implemented with the following modifications. The above embodiment and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0085] ○When the lid-side attachment portion 51 and the main body-side attachment portion 21 are held between the lid-side pressing portion 73 and the main body-side pressing portion 79, the other end of the shaft portion 72 does not need to protrude further toward the bottom wall 12 than the tip of the regulating portion 24 in the extending direction.

[0086] ○In the lid-side attachment portion 51, a hole may be added extending from the second lid-side through portion 522 in a direction different from the longitudinal direction Y of the bottom wall 12. In this configuration, the lid-side through hole 52 is formed in a cross shape or X shape in a plan view of the lid-side attachment portion 51. Furthermore, the lid-side attachment portion 51 is formed with a lid-side through hole 52 that avoids interference with the lid pressing portion 73 even when the pair of operating portions 75 are arranged in a direction different from a specific direction.

[0087] ○In the main body attachment portion 21, the first main body opening width R1 of the first main body through portion 221 may be larger than the diameter N1 of the shaft portion 72. In this case, the main body attachment portion 21 does not clamp the shaft portion 72 which is located in the retraction area F2, and therefore does not restrict the rotation of the shaft portion 72 in the screw rotation direction.

[0088] ○In the lid-side attachment portion 51, the clamping projection 54 and the edge portion 56 may be made to the same height, and the maintenance portion 57 may be omitted. In this case, the main body of the pressing portion 74 may be placed on the edge portion 56, and the shaft portion 72 may be positioned at the second main body-side through portion 222 and the second lid-side through portion 522, while the main body-side attachment portion 21 and the lid-side attachment portion 51 are clamped by the lid-side pressing portion 73 and the main body-side pressing portion 79.

[0089] ○The pressing portion 79 for the main body may be unable to screw forward or backward relative to the shaft portion 72. ○In the through-hole 52 on the lid side, the opening width W1 on the first lid side may be the same as the opening width W2 on the second lid side. In other words, the shape of the through-hole 52 on the lid side in a plan view of the attachment portion 51 on the lid side may be changed as appropriate, as long as the shape allows the pressing portion 73 for the lid, which is positioned in a specific direction, to pass through. In this case, for example, even when the shaft portion 72 is positioned in the third through-hole 523 on the lid side, a clearance portion 82 is formed so that the pressing portion 73 for the lid does not interfere with the attachment portion 51 on the lid side.

[0090] ○The through-hole 52 on the lid side may be extended in the longitudinal direction Y by extending the fourth lid-side through-hole 524 toward the third lid-side through-hole 523 and extending the main body-side attachment portion 21 in the longitudinal direction Y, or the first lid-side through-hole 521 may be extended in the longitudinal direction Y toward the second lid-side through-hole 522 and extending the main body-side attachment portion 21 in the longitudinal direction Y. In short, as long as a retraction area F2 is formed at a position shifted in the longitudinal direction Y relative to the clamping area F1, the shapes of the through-hole 22 on the main body side and the through-hole 52 on the lid side may be changed as appropriate.

[0091] ○When the shaft portion 72 is positioned in the second body through portion 222 and the shaft portion 72 is positioned in a different location from the clamping region F1, a relief portion 82 may be formed in the lid attachment portion 51 so that the lid pressing portion 73 can pass through the lid through hole 52.

[0092] ○The mounting direction Z may be a direction that is slightly inclined with respect to the vertical direction. In this case, by making the dimensions of the bottom wall 12 in the short direction X and the long direction Y slightly larger in the through hole 52 on the lid side than in the embodiment, interference between the lid pressing part 73 and the lid mounting part 51 can be avoided by the avoidance part 82.

[0093] ○When the shaft portion 72 is positioned in the clamping region F1, the main body 11 may be provided with a maintenance portion that contacts the main body pressing portion 79 to restrict the movement of the shaft portion 72 from the clamping region F1 toward the retraction region F2, thereby maintaining the state in which the shaft portion 72 is positioned in the clamping region F1. Specifically, the maintenance portion that contacts the main body pressing portion 79 may be provided on the main body side end face 21b of the main body side attachment portion 21 or on the restricting surface 24b. Furthermore, the maintenance portion may contact both the lid pressing portion 73 and the main body pressing portion 79, or it may contact only the main body pressing portion 79.

[0094] ○When the shaft portion 72 of the attachment member 71 is positioned in the clamping area F1, and the main body side attachment portion 21 and the lid side attachment portion 51 are clamped by the attachment member 71, the attachment member 71 may be moved toward the retraction area F2 to forcibly move over the retention portion 57. In other words, when moving the attachment member 71 from the clamping area F1 toward the retraction area F2, it is not necessary to relatively separate the lid pressing portion 73 and the main body pressing portion 79 on the attachment member 71.

[0095] ○The pressing portion 73 for the lid does not have to be shaped like a wing bolt, which includes a pressing portion body 74 and a pair of operating portions 75. For example, the pressing portion 73 for the lid may be hexagonal prism-shaped, like the head of a hexagonal bolt. In this configuration, the second lid-side through portion 522 of the lid-side through hole 52 may be formed in the shape of a hexagonal hole, and the inner surface defining the second lid-side through portion 522 may be made into a avoidance portion 82.

[0096] ○The attachment structure may be provided in the attachment structure between the lid of the outdoor enclosure and the heat shield attached to the lid. In this case, the first attachment body is the heat shield, and the second attachment body is the lid of the outdoor enclosure. The outdoor enclosure houses electronic equipment. The lid of the outdoor enclosure is provided with a projection for attaching the heat shield. The projection creates a gap between the heat shield and the surface of the lid. The heat shield is then attached to the lid by an attachment member. With this configuration, the attachment structure allows the heat shield to be removed from the lid while the attachment member remains attached to the lid. As a result, the attachment member is not removed from the lid and the heat shield, making it less likely to lose the attachment member.

[0097] ○The attachment structure is not limited to one that attaches the main body 11 to the lid 31. For example, the attachment structure may be provided to attach a wiring box to a frame attached to the opening side of the wiring box, or to attach the tube-forming members of a protective tube formed by attaching two semi-cylindrical tube-forming members. In short, any attachment structure provided to form a structure by attaching a first attachment body and a second attachment body may be arbitrarily changed.

[0098] ○In this embodiment, the direction from the clamping area F1 to the retraction area F2 is the direction from the second ends 212, 512 of the main body side attachment part 21 and the lid side attachment part 51 to the first ends 211, 511. In other words, the direction from the clamping area F1 to the retraction area F2 is the direction from the end of the longitudinal direction Y of the bottom wall 12 to the center in two attachment structures adjacent to each other in the longitudinal direction Y of the bottom wall 12. In contrast, the direction from the clamping area F1 to the retraction area F2 may be the direction from the second ends 212, 512 to the first ends 211, 511 in one of the two attachment structures adjacent to each other in the longitudinal direction Y of the bottom wall 12, and the direction from the first ends 211, 511 to the second ends 212, 512 in the other. Alternatively, the direction from the clamping region F1 to the retraction region F2 may be the direction from the first end 211,511 to the second end 212,512 in each of the two attachment structures adjacent to each other in the longitudinal direction Y of the bottom wall 12.

[0099] ○In the mounting structure and box body 10, one clamping area F1 may be provided in each of the through-holes 22 on the main body side and 52 on the lid side, and multiple retraction areas F2 may be provided. Conversely, in the mounting structure and box body 10, multiple clamping areas F1 may be provided in each of the through-holes 22 on the main body side and 52 on the lid side, and one retraction area F2 may be provided. Furthermore, in the mounting structure and box body 10, multiple clamping areas F1 may be provided in each of the through-holes 22 on the main body side and 52 on the lid side, and multiple retraction areas F2 may be provided.

[0100] ○The mounting member 71 may consist of a shaft portion 72 without a male screw 72a and a biasing member, for example made of rubber, fixed to the shaft portion 72. In this case, the lid pressing portion 73 may be in the form of the embodiment, or it may not have to be a shape that includes a pressing portion body 74 and a pair of operating portions 75, like a wing bolt. The biasing member also constitutes the second pressing portion and the main body pressing portion 79.

[0101] In this configuration, the main body pressing portion 79, together with the lid pressing portion 73, biases the main body side attachment portion 21 and the lid side attachment portion 51 in the clamping region F1. Furthermore, when moving the attachment member 71 toward the retraction region F2, the main body pressing portion 79 elastically deforms, lifting the attachment member 71 and enabling its movement.

[0102] ○The attachment structure provided on the box body 10 may be located in more than four places, or even just one place. [Explanation of symbols]

[0103] F1... Clamping area, F2... Retraction area, Sa... Opening, Z... Attachment direction, 10... Box body as a structure, 11... Main body as a second attachment body, 21... Main body side attachment part as a second attachment part, 22... Main body side through hole as a second through hole, 24... Restricting part, 31... Lid as a first attachment body, 51... Lid side attachment part as a first attachment part, 52... Lid side through hole as a first through hole, 57... Maintenance part, 71... Attachment member, 72... Shaft part, 72a... Male screw, 73... Lid pressing part as a first pressing part, 75... Operating part, 79... Main body pressing part as a second pressing part, 81... Rotation restricting part, 82... Avoidance part.

Claims

1. An attachment structure in a structure formed by moving a first attachment body in the attachment direction and attaching it to a second attachment body, The first attachment body includes a first attachment portion having a first through hole that penetrates in the attachment direction, and the second attachment body includes a second attachment portion having a second through hole that penetrates in the attachment direction. The shaft portion is positioned to penetrate the first through hole and the second through hole, A first pressing portion provided on one axial end of the shaft portion presses the first attachment body toward the second attachment body while contacting the periphery of the first through hole in the first attachment portion, The second pressing portion, provided on the other axial end of the shaft portion, presses the second attachment body toward the first attachment body while abutting against the periphery of the second through hole in the second attachment portion. The first pressing portion and the second pressing portion are displaceable relative to each other in the axial direction, and the first attachment portion and the second attachment portion are attached to each other while being sandwiched between the first attachment portion and the second attachment portion by being relatively close to each other in the axial direction. Each of the first through hole and the second through hole has a clamping region in which the shaft portion is positioned with the first attachment portion and the second attachment portion clamped together, A retraction region is provided that allows the shaft to be positioned at a location different from the clamping region when the first pressing portion and the second pressing portion are separated relative to each other in the axial direction and the clamping is released. The mounting structure is characterized in that the first mounting portion is provided with an avoidance portion that avoids interference with the first pressing portion when the first mounting body is moved in the opposite direction to the mounting direction so as to be separated from the second mounting body, with the shaft portion positioned in the retraction area.

2. The attachment structure according to claim 1, further comprising a maintenance portion that, when the shaft portion is positioned in the clamping region, contacts at least one of the first pressing portion and the second pressing portion, restricts the movement of the shaft portion from the clamping region toward the retraction region, and maintains the state in which the shaft portion is positioned in the clamping region.

3. The mounting structure according to claim 2, in a state in which the clamping is released by relatively separating the first pressing portion and the second pressing portion in the axial direction, the retaining portion can overcome by moving the shaft portion in the axial direction.

4. The shaft portion, which has a male thread formed on its outer surface, and the first pressing portion are rotatable together. The first pressing portion is the head of a wing bolt, which includes an operating portion that extends away from the shaft portion in order to perform a screw rotation operation on the shaft portion. The second pressing portion is a nut body that can be screwed forward and backward along the shaft portion, The mounting structure according to any one of claims 1 to 3, wherein the second mounting portion is a rotation restricting portion that clamps the shaft portion, which is located in the retraction area, from the radially outer side and restricts the rotation of the shaft portion in the screw rotation direction.

5. The mounting structure according to claim 4, wherein the avoidance portion can avoid interference with the first pressing portion only when the extension direction of the operating portion in the first pressing portion is set to a specific direction.

6. The attachment structure according to claim 5, wherein the aforementioned specific direction is the direction in which the shaft portion moves from the clamping region to the retraction region.

7. A box-shaped body with a bottom that opens, A lid that closes the aforementioned opening, A box body comprising: an attachment member for attaching the lid to the main body in a state where the opening is closed, The main body has a main body side attachment portion with a through hole formed on the main body side, and the lid has a lid side attachment portion with a through hole formed on the lid side. In the closed state, where the opening is closed by the cover, the main body attachment portion and the cover attachment portion are in contact, and the main body through hole and the cover through hole overlap. The aforementioned attachment member is In the aforementioned closed state, the shaft portion has a length that allows it to penetrate both the through-hole on the main body side and the through-hole on the lid side, and has male threads formed on its outer surface, A pressing portion for the main body is provided on one end of the shaft portion in the axial direction, and contacts the periphery of the through hole on the main body side in the main body side attachment portion, pressing the main body toward the lid, The shaft portion is provided on the other end in the axial direction and includes a lid pressing portion that abuts against the periphery of the lid-side through hole in the lid-side attachment portion and presses the lid toward the main body, In the attachment member, the pressing portion for the main body and the pressing portion for the lid are capable of displacing their relative positions in the axial direction, and by being relatively close to each other in the axial direction, they clamp the attachment portion for the main body and the attachment portion for the lid. Each of the through-hole on the main body and the through-hole on the lid has a clamping region in which the shaft portion of the attachment member that clamps the attachment portion on the main body and the attachment portion on the lid is positioned, A retraction region is provided in which the shaft portion is moved from a position that penetrates the through-hole on the main body side and the through-hole on the lid side, respectively, to position the shaft portion at a position different from the clamping region. The box body is characterized in that the lid attachment portion is provided with an avoidance portion that avoids interference with the lid pressing portion when the lid is moved in a direction away from the main body while the shaft portion is positioned in the retraction area.

8. The main body attachment portion is formed to protrude outward from the peripheral wall surrounding the opening in the main body, The pressing portion for the main body is positioned on the outside of the peripheral wall and screwed onto the male screw, The main body attachment portion includes a restricting portion that extends from the main body attachment portion toward the bottom side of the main body, The regulating portion is positioned opposite the outer surface of the peripheral wall of the main body at a distance from it, and contacts the pressing portion for the main body to restrict the rotation of the pressing portion for the main body that occurs with the screw rotation of the shaft portion. The box body according to claim 7, wherein, in a state in which the lid-side attachment portion and the body-side attachment portion are clamped by the pressing portion for the main body and the pressing portion for the lid, the other end of the shaft portion protrudes more toward the bottom than the tip in the extending direction of the restricting portion.

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