Fixture

Abstract

To provide a fixture with high versatility.SOLUTION: A fixture 1 includes: an outer side piece portion 11 arranged outside a side surface portion 32 of a duct body 3; and an inner side piece portion 12 positioned inside the side surface portion 32 via a through hole 323 passing through the inside and outside of the side surface portion 32 from the outer side piece portion 11. The inner side piece portion 12 includes: a plane portion 18 parallel to the outer side piece portion 11 on a connection portion 17 side connected to the outer side piece portion 11; and a locking portion 19 that locks the duct body 3 from the inside on the side opposite to the connection portion 17 side and is provided with a protrusion portion 19a on the side facing the outer side piece portion 11. The outer side piece portion 11 locks a duct cover 4 from the outside and has an uneven region corresponding to at least the locking portion 19, of a surface on the side facing the inner side piece portion 12, and the outer side piece portion 11 and the inner side piece portion 12 overlap and sandwich a portion to be fixed of the duct body 3 and a portion to be fixed of the duct cover 4 therebetween.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a fixture, and particularly to a fixture for fixing a duct cover to a duct body.

Background Art

[0002] There is a wiring duct for housing and guiding wirings such as electric wires. The wiring duct is provided in a switchboard, a distribution board, a machine tool, or the like, and is used with a duct body that houses the wiring inside being closed by a duct cover. The wiring is guided by the wiring duct to the vicinity of the electrical equipment at the connection destination. In such a wiring duct, a fixture for fixing the duct cover to the duct body is used to prevent the duct cover from coming off the duct body.

[0003] The fixing auxiliary tool disclosed in Patent Document 1 is used for a wiring duct that houses and guides wirings. The fixing auxiliary tool includes an outer piece portion disposed outside the side surface portion of the duct body and an inner piece portion disposed inside the side surface portion through a through hole in the side surface portion from the outer piece portion. The inner piece portion is provided with a second locking portion that locks to the second locked portion of the duct body. Patent Document 1 discloses a fixing auxiliary tool for a wiring duct that sandwiches the locking portion between the first locking portion of the duct cover and the first locked portion of the duct body by the outer piece portion and the inner piece portion of the fixing auxiliary tool by locking the second locking portion of the inner piece portion of the fixing auxiliary tool to the second locked portion of the duct body.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, wiring ducts are individually designed according to their applications. Therefore, the shapes of the duct body and the duct cover vary depending on the type of wiring duct. However, in the technique described in Patent Document 1, it is necessary to individually design a fixing aid for the wiring duct according to the type of wiring duct. Therefore, the fixing aid for the wiring duct described in Patent Document 1 may not be applicable to different types of wiring ducts, and there is a problem of low versatility.

[0006] The present invention has been made to solve such problems, and an object thereof is to provide a highly versatile fixture.

Means for Solving the Problems

[0007] A fixture according to an embodiment is a fixture for fixing a duct cover that closes a duct body to the duct body. The fixture has an outer piece portion disposed outside the side surface portion of the duct body, and an inner piece portion disposed inside the side surface portion through a through hole that penetrates the inside and outside of the side surface portion from the outer piece portion. The inner piece portion has a flat surface portion parallel to the outer piece portion on the connecting portion side connected to the outer piece portion, and a locking portion that locks the duct body from the inside on the side opposite to the connecting portion side and has a convex portion provided on the side facing the outer piece portion. The outer piece portion locks the duct cover from the outside, and at least a region corresponding to the locking portion on the surface facing the inner piece portion is formed in an uneven shape. The outer piece portion and the inner piece portion sandwich the fixed portion of the duct body and the fixed portion of the duct cover by overlapping them between each other.

Effects of the Invention

[0008] According to the present invention, a highly versatile fixture can be provided.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Mode for Carrying Out the Invention

[0010] Embodiment 1 Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the following embodiments. Also, for clarity of explanation, the following description and drawings are appropriately simplified. In the following description, the same or equivalent elements are denoted by the same reference numerals, and duplicate explanations are omitted.

[0011] Furthermore, in the following description, the longitudinal direction of the wiring duct 2 is defined as the X direction, the width direction of the wiring duct 2 is defined as the Y direction, and the height direction of the wiring duct 2 orthogonal to the X and Y directions is defined as the Z direction.

[0012] First, with reference to FIGS. 1 and 2, the fixture 1 according to the present embodiment will be described. FIG. 1 is an external view illustrating a wiring duct fixed using the fixture according to Embodiment 1. FIG. 2 is a view of FIG. 1 as seen from the longitudinal direction of the wiring duct. Note that FIG. 1 shows a plurality of types of wiring ducts 2, and the fixture 1 is attached to each wiring duct 2. Further, FIG. 2 shows a cross section of one wiring duct 2 as seen from the X direction.

[0013] As shown in FIGS. 1 and 2, the fixture 1 is attached to a wiring duct 2 having a duct body 3 and a duct cover 4. The fixture 1 is a member for fixing the duct cover 4 to the duct body 3.

[0014] The wiring duct 2 is provided in a distribution board, a sub-distribution board, a machine tool, or the like. The wiring duct 2 has a cylindrical shape extending in the X direction and is hollow inside. Both ends of the wiring duct 2 in the X direction are open. A plurality of wirings C are accommodated inside the wiring duct 2. The wiring C is, for example, an electric wire or the like.

[0015] The duct body 3 has a plate-shaped bottom surface portion 31 and a pair of plate-shaped side surface portions 32 erected in the Z direction from both ends of the bottom surface portion 31 in the Y direction. The cross section of the duct body 3 as seen from the X direction is formed in a substantially U shape. The bottom surface portion 31 and the pair of side surface portions 32 are integrally formed. The duct body 3 has an opening 30 with an open upper end in the Z direction. The opening 30 is formed along the X direction of the duct body 3. The opening 30 is closed by the duct cover 4.

[0016] A plurality of through holes 323 are provided in each side surface portion 32. The plurality of through holes 323 are arranged in a row along the X direction of the duct main body 3. The through holes 323 are formed to penetrate the inside and the outside of the side surface portion 32. The through holes 323 are formed in a vertically long rectangular shape. The through holes 323 are for guiding the wiring C accommodated inside the wiring duct 2 (duct main body 3) to the outside of the wiring duct 2. The wiring C guided to the outside of the wiring duct 2 is connected to a predetermined electric device or the like.

[0017] The upper end portion of each side surface portion 32 is a fitting portion 324 for fitting a duct cover 4 described later. The fitting portion 324 is arranged closer to the opening portion 30 side than the through holes 323 in the side surface portion 32. The fitting portion 324 is formed in a concave shape by denting the upper end portion of the side surface portion 32 inward (in the Y direction). That is, the fitting portion 324 has a substantially semi-circular arc shape in a cross section viewed from the X direction. The fitting portion 324 is formed along the X direction of the duct main body 3.

[0018] The duct cover 4 has a plate-shaped closing portion 41 for closing the opening portion 30 of the duct main body 3, and a pair of outer fitting portions 42 erected in the Z direction from both ends in the Y direction of the closing portion 41. The closing portion 41 and the pair of outer fitting portions 42 are integrally formed. The outer fitting portions 42 are formed along the X direction of the duct cover 4.

[0019] The lower end portion of the outer fitting portion 42 is a fitting portion 421. The fitting portion 421 has a shape that can be fitted (locked) into the concave shape of the fitting portion 324. The fitting portion 421 is formed by denting the lower end portion of the outer fitting portion 42 inward (in the Y direction) so as to protrude inward. That is, the fitting portion 421 has a substantially U-shaped cross section when viewed from the X direction. The fitting portion 421 is fitted into the fitting portion 324 from the outside to the inside of the side surface portion 32. In a state where the fitting portion 421 is fitted to the fitting portion 324 of the duct main body 3, the duct cover 4 can be slid in the X direction.

[0020] As materials for constituting the wiring duct 2 (duct main body 3, duct cover 4), for example, thermoplastic resins capable of extrusion molding or injection molding can be used. Examples of such thermoplastic resins include olefin resins (propylene resins such as polypropylene, ethylene resins such as polyethylene), polyamide resins, elastomers, etc. In addition, polyvinyl chloride resins, modified polyphenylene ether resins, polycarbonate alloys, etc. can also be used.

[0021] The fixture 1 fixes the duct cover 4 to the duct main body 3 by sandwiching the fitting portion 324 of the above-described duct main body 3 and the outer fitting portion 42 of the duct cover 4. In the present embodiment, the fitting portion 324 corresponds to the portion to be fixed of the duct main body 3, and the outer fitting portion 42 corresponds to the portion to be fixed of the duct cover 4. In the following description, when the two are not particularly distinguished, the fitting portion 324 and the outer fitting portion 42 may be collectively referred to as the portion to be fixed.

[0022] The fixture 1 has at least a fixing portion 10. The fixture 1 may further include a pressing portion 20. Since the fixing portion 10 is configured to be detachable from the pressing portion 20, the fixing portion 10 and the pressing portion 20 can be used independently. As materials for constituting the fixture 1, for example, polyamide resins (nylon 6, nylon 66, etc.), olefin resins (polypropylene resin, polyethylene resin, etc.) can be used.

[0023] Here, with reference to FIGS. 3 to 6, the details of the fixture 1 will be described. FIG. 3 is a perspective view showing the fixture according to Embodiment 1. FIG. 4 is a side view of the fixture shown in FIG. 3. FIG. 5 is a plan view of the fixture shown in FIG. 3. FIG. 6 is a rear view of the fixture shown in FIG. 3. Note that FIGS. 4 to 6 are a side view of the fixture 1 viewed from the X direction, a plan view of the fixture 1 viewed from the Z direction (upward), and a rear view of the fixture 1 when attached to the wiring duct 2 viewed from the inside (Y direction) of the wiring duct 2, respectively.

[0024] First, the fixing portion 10 having a function of fixing the duct main body 3 and the duct cover 4 will be described. The fixing portion 10 has an outer piece portion 11 and an inner piece portion 12 that face each other in the Y direction. The outer piece portion 11 and the inner piece portion 12 constituting the fixing portion 10 are integrally formed. The outer piece portion 11 is disposed outside the side surface portion 32 of the duct main body 3. The inner piece portion 12 is disposed inside the side surface portion 32 through a through hole 323 that penetrates the inside and outside of the side surface portion 32 from the outer piece portion 11.

[0025] The outer piece portion 11 locks the portion to be fixed from the outside. The outer piece portion 11 is formed in a substantially rectangular plate shape along the XZ plane. The outer piece portion 11 has an upper end portion 14 and a lower end portion 16, and further has a central portion 15 between the upper end portion 14 and the lower end portion 16.

[0026] At least a region corresponding to the locking portion 19 is formed in an uneven shape on the surface of the upper end portion 14 on the side facing the inner piece portion 12. The region formed in an uneven shape has, for example, a surface shape in which concave and convex shapes extending in the X direction are alternately formed in the Z direction, and the cross section viewed from the X direction is wavy. When locking the portion to be fixed, the upper end portion 14 abuts against the outer surface of the outer fitting portion 42. Since the region abutting against the outer surface of the outer fitting portion 42 is formed in an uneven shape, the outer piece portion 11 can lock the portion to be fixed (outer fitting portion 42) without slipping. Further, the proximal end side of the upper end portion 14 is bent toward the inner piece portion 12 and is disposed closer to the inner piece portion 12 (Y direction) than the central portion 15 and the lower end portion 16.

[0027] The connecting portion 17 of the inner piece portion 12 is connected to the surface of the central portion 15 on the side facing the inner piece portion 12. A handle 13 protruding outward from the outer surface is provided on the surface opposite to the surface facing the inner piece portion 12 in the Y direction. The handle 13 is for moving the fixing portion 10 when grasped by an operator.

[0028] The lower end portion 16 is a portion to be inserted into the groove 22a of the pressing portion 20. A substantially rectangular hole 16a that penetrates in the Y direction and is long in the X direction is provided in the lower end portion 16. The protruding portion 22b of the pressing portion 20 can be fitted into the hole 16a.

[0029] The inner piece portion 12 locks the portion to be fixed from the inside. In the example shown in FIG. 2, the inner piece portion 12 locks the fitting portion 324 of the duct main body 3 from the inside. The inner piece portion 12 has a connecting portion 17, a flat portion 18 disposed on the side of the connecting portion 17, and a locking portion 19 disposed on the side opposite to the connecting portion 17.

[0030] The connecting portion 17 has a proximal end side connected to the outer piece portion 11 and a distal end side connected to the flat portion 18. The connecting portion 17 is a portion connecting the outer piece portion 11 and the flat portion 18. The flat portion 18 extends upward from the surface of the connecting portion 17 opposite to the outer piece portion 11 and has a substantially rectangular plate shape along the XZ plane. The flat portion 18 is disposed substantially parallel at substantially the same height as the central portion 15 of the outer piece portion 11.

[0031] The locking portion 19 extends upward from the tip of the flat portion 18 and has a substantially semi-circular arc shape in cross-section when viewed from the X direction. The tip of the locking portion 19 faces the outer piece portion 11 side. Further, the locking portion 19 is provided with a convex portion 19a that protrudes from the surface on the side facing the outer piece portion 11 toward the outer piece portion 11 and extends in the X direction. The convex portion 19a has a substantially semi-circular shape in cross-section when viewed from the X direction.

[0032] When locking the portion to be fixed, at least a part of the inner piece portion 12 abuts against the inner surface of the side surface portion 32 (fitting portion 324). At this time, the convex portion 19a protruding toward the outer piece portion 11 can be reliably abutted against the inner surface of the fitting portion 324. Therefore, for example, even if the shape of the locking portion 19 does not conform to the shape of the inner surface of the fitting portion 324, since the convex portion 19a of the locking portion 19 abuts against the inner surface of the fitting portion 324, the locking portion 19 can lock the fitting portion 324 from the inside to the outside.

[0033] The central portion 15 of the outer piece portion 11 and the flat portion 18 of the inner piece portion 12 are arranged to be spaced apart from each other in the Y direction via the connecting portion 17. Similarly, the upper end portion 14 of the outer piece portion 11 and the locking portion 19 of the inner piece portion 12 are arranged to be spaced apart from each other in the Y direction. The fixing portion 10 forms a gap S capable of sandwiching the portion to be fixed between the central portion 15 and the flat portion 18, and between the upper end portion 14 and the locking portion 19. The gap S has an opening S1 with an upper end opening in the Z direction. The lower end of the gap S is the upper end surface of the connecting portion 17, and both ends in the X direction are open. As shown in FIG. 2, when the fixing portion 10 is in a posture of sandwiching the portion to be fixed, the opening direction of the opening S1 of the gap S faces upward in the Z direction.

[0034] Furthermore, the thickness of the outer piece portion 11 in the Y direction is formed to be thin so that the upper end portion 14 can move flexibly. Also, the thickness of the inner piece portion 12 in the Y direction is formed to be thin so that the locking portion 19 can move flexibly. Thereby, when sandwiching the portion to be fixed using the fixing portion 10, the upper end portion 14 is expanded in the Y direction away from the locking portion 19, and the locking portion 19 is expanded in the Y direction away from the upper end portion 14. Thus, by expanding the gap S in the Y direction, the fixing portion 10 can sandwich portions to be fixed of various shapes regardless of the shapes (for example, the respective shapes and thicknesses of the portion to be fitted 324 and the outer fitting portion 42) of the duct main body 3 and the duct cover 4.

[0035] Subsequently, the pressing portion 20 having a function of suppressing the scattering of the wiring C will be described. The pressing portion 20 is arranged to extend across the inner and outer sides of the side surface portion 32 of the duct main body 3 through the through hole 323. The pressing portion 20 has a holder portion 22 and a rod-shaped portion 21.

[0036] The holder portion 22 has a groove 22a opening upward in the Z direction. Both ends of the groove 22a in the X direction are open. Also, on the holder portion 22, a protrusion 22b that protrudes from the surface on the side opposite to the rod-shaped portion 21 toward the surface on the rod-shaped portion 21 side inside the groove 22a and extends in the X direction is provided. The cross-section of the protrusion 22b viewed from the X direction has a substantially semi-circular shape. The width of the holder portion 22 in the X direction is equal to or less than the width W2 of the outer piece portion 11 in the X direction.

[0037] Further, a handle 23 is provided at the lower end of the holder portion 22. The handle 23 protrudes from the holder portion 22 toward the outer side opposite to the rod-shaped portion 21 in the Y direction. The handle 23 is for the operator to grip and move the pressing portion 20.

[0038] The rod-shaped portion 21 protrudes from the holder toward the inside of the side surface portion 32 on the side opposite to the handle 23 in the Y direction. The rod-shaped portion 21 is composed of an angular rod-shaped member extending in the Y direction. The longer the length of the rod-shaped portion 21 in the Y direction, the more the scattering of the wiring C can be suppressed regardless of the type of the wiring duct 2. On the other hand, if the length of the rod-shaped portion 21 becomes longer than necessary, it is not preferable from the viewpoint of miniaturization. For example, the length of the rod-shaped portion 21 is preferably about the same as the length of the duct main body 3 in the Y direction.

[0039] As the lower end portion 16 of the above-described fixing portion 10 is inserted into the groove 22a of the holder portion 22, the protrusion portion 22b is fitted into the hole 16a. Thereby, the fixing portion 10 is attached to the pressing portion 20, and the fixing portion 10 and the pressing portion 20 can be integrally used.

[0040] Next, the width relationship between the fixing portion 10 and the through hole 323 will be described. In explaining these width relationships, reference will be made to FIGS. 1 and 6 as appropriate. First, the width W2 of the outer piece portion 11 in the X direction is set to be larger than the width W1 of the through hole 323 in the X direction.

[0041] Also, the inner piece portion 12 is set to be generally equal to or less than the width W2 of the outer piece portion 11. For the inner piece portion 12, the width in the X direction of the connecting portion 17 and the width W3 of the flat portion 18 in the X direction are set to be smaller than the width W1 of the through hole 323 in the X direction. On the other hand, the largest width W4 in the X direction of the locking portion 19 is set to be larger than the width W1 of the through hole 323 in the X direction.

[0042] In the example shown in FIG. 6, the locking portion 19 has a base end connected to the flat portion 18 set to a width W3, and a tip end on the side opposite to the base end in the Z direction set to a width W4. That is, the locking portion 19 is formed in a tapered shape in which the width in the X direction gradually increases toward the upper direction in the Z direction. With such a width relationship, it is possible to prevent the fixture 1 from falling off, which may occur when removing the fixture 1 from the wiring duct 2.

[0043] Therefore, with reference to FIGS. 7 and 8, a method for removing the fixture 1 from the wiring duct 2 will be described. FIG. 7 is a diagram for explaining a method for removing the fixture shown in FIG. 3 from the wiring duct. FIG. 8 is a diagram for explaining a method for removing the fixture shown in FIG. 3 from the wiring duct. Note that the fixture 1 shown in FIGS. 7 and 8 shows only the fixing portion 10.

[0044] When removing the fixture 1 from the wiring duct 2, first, the duct cover 4 is removed from the state where the fixing portion 10 is attached to the wiring duct 2 (the state in FIG. 2). When removing the duct cover 4, while lifting the duct cover 4, the outer piece portion 11 of the fixing portion 10 is expanded outward in the Y direction to release the fitting state between the fitting portion 421 of the duct cover 4 and the fitted portion 324 of the duct body 3.

[0045] At this time, even if the outer piece portion 11 of the fixing portion 10 is expanded outward, the locking portion 19 of the inner piece portion 12 is locked to the fitted portion 324, so the fixing portion 10 does not come off from the duct body 3. Further, even in the state where the duct cover 4 is completely removed from the duct body 3 after the locking state is released, the locking portion 19 of the inner piece portion 12 is locked to the fitted portion 324, so the fixing portion 10 does not come off from the duct body 3. That is, the state where the fixing portion 10 is attached to the fitted portion 324 of the duct body 3 can be maintained. When the duct cover 4 is removed, the upper end portion 14 of the expanded outer piece portion 11 approaches the inner piece portion 12 and returns to the original state.

[0046] When the fixing part 10 is pulled in the direction of the white arrow shown in FIG. 7 (downward in the Z direction), the locking state between the locking part 19 of the inner piece part 12 and the fitted part 324 is released. While sliding the fixing part 10 along the Z direction, it moves downward. At this time, since the tip side of the locking part 19 is wider than the width W1 of the through hole 323 (for example, W4>W1), the part on the tip side of the locking part 19 catches on the edge along the Z direction among the edges surrounding the through hole 323 of the duct body 3.

[0047] Thus, in the state shown in FIG. 7, even if a pulling force is applied to the fixing part 10 toward the outside of the duct body 3, the fixing part 10 cannot be taken out of the duct body 3. In the following description, the edge along the Z direction among the edges surrounding the through hole 323 may be referred to as the edge of the through hole 323.

[0048] When taking out the fixing part 10 from the outside of the duct body 3, as shown in FIG. 8, the fixing part 10 is rotated about 90 degrees along the XZ plane from the state of FIG. 7. Thereby, the opening direction of the opening S1 of the gap S faces the X direction, and when the fixing part 10 is pulled out while being slightly rotated along the XY plane, the part on the tip side of the locking part 19 is not caught, and the inner piece part 12 can be taken out of the duct body 3 through the through hole 323.

[0049] When the fixture 1 includes the pressing part 20, after taking out the inner piece part 12 from the outside of the duct body 3, by moving the fixture 1 directly outward in the Y direction, the entire fixture 1 can be taken out of the duct body 3.

[0050] The method of attaching the fixture 1 to the wiring duct 2 may follow the reverse procedure of the method of removing the fixture 1 from the wiring duct 2 described above. First, with the fixing part 10 rotated along the XZ plane so that the opening direction of the opening S1 of the gap S faces the X direction, the inner piece part 12 is arranged inside the duct body 3 through the through hole 323. At this time, the outer piece part 11 is arranged along the XZ plane and outside the duct body 3.

[0051] Thereafter, when the fixing part 10 is rotated about 90 degrees along the XZ plane so that the opening direction of the opening S1 of the gap S faces upward in the Z direction, the edge of the through hole 323 is disposed between the outer piece part 11 and the inner piece part 12. At this time, the edge of the through hole 323 is disposed at both end portions in the X direction of the outer piece part 11 and the inner piece part 12. Then, while sliding the fixing part 10, it is moved upward along the Z direction.

[0052] When the fixing part 10 advances upward, the upper end of the inner piece part 12 hits the fitted part 324, and the locking part 19 of the inner piece part 12 is expanded in the Y direction away from the outer piece part 11 by the inner surface of the fitted part 324. By further moving the fixing part 10 upward, the fitted part 324 is inserted into the gap S between the outer piece part 11 and the inner piece part 12, and the fixing part 10 can be attached to the duct main body 3. When the fitted part 324 is inserted into the gap S between the outer piece part 11 and the inner piece part 12, the locking part 19 of the inner piece part 12 is locked to the fitted part 324, so that the fixing part 10 does not come off from the duct main body 3.

[0053] When fitting the duct cover 4 to the duct main body 3 in a state where the fixing part 10 is attached to the duct main body 3, while expanding the outer piece part 11 outward in the Y direction, the outer fitting part 42 of the duct cover 4 is inserted into the gap between the side surface part 32 (fitted part 324) of the duct main body 3. Then, the fitting part 421 of the duct cover 4 is fitted into the fitted part 324 of the duct main body 3. When the expansion of the outer piece part 11 expanded outward is restored, the upper end part 14 of the outer piece part 11 locks the outer fitting part 42 from the outside.

[0054] By the above procedure, the outer piece part 11 and the inner piece part 12 can sandwich the parts to be fixed (fitted part 324, outer fitting part 42) between each other. In this way, the attachment of the fixture 1 (fixing part 10) to the wiring duct 2 is completed. In a state where the fixture 1 is attached to the wiring duct 2, the outer piece part 11 and the inner piece part 12 sandwich the part to be fixed of the duct main body 3 and the part to be fixed of the duct cover 4 by overlapping them in the gap S formed between each other. Note that the fixture 1 includes at least the fixing part 10.

[0055] At this time, the outer piece portion 11 is disposed outside the side surface portion 32. The outer piece portion 11 locks the duct cover 4 from the outside toward the inside. Further, the inner piece portion 12 is disposed so as to cover across the fitting portion 324 of the duct main body 3 and the outer fitting portion 42 of the duct cover 4. The inner piece portion 12 is disposed inside the side surface portion 32 through the through hole 323 from the outer piece portion 11. The inner piece portion 12 is disposed such that the connecting portion 17 penetrates through the through hole 323, and the flat portion 18 and the locking portion 19 are disposed so as to be in contact with at least a part of the inner surface of the side surface portion 32. The locking portion 19 of the inner piece portion 12 locks the duct main body 3 from the inside toward the outside.

[0056] Subsequently, with reference to FIGS. 9 and 10, the state of the wiring C when the duct cover 4 is removed from the duct main body 3 when the fixture 1 is used will be described. FIG. 9 is a diagram showing the state of the wiring accommodated in the wiring duct fixed by the fixture shown in FIG. 3. FIG. 10 is a diagram showing the state of the wiring accommodated in the wiring duct in which the fixing by the fixture shown in FIG. 3 is released.

[0057] First, as shown in FIG. 9, in the state where the wiring duct 2 is fixed by the fixture 1, the duct cover 4 closes the opening 30 of the duct main body 3. After the duct cover 4 is attached to the duct main body 3 that houses the wiring C in this way, inside the wiring duct 2 to which the fixture 1 is attached, a plurality of wirings C exist in the space below the rod-shaped portion 21.

[0058] On the one hand, as shown in FIG. 10, when removing the duct cover 4 from the duct body 3, the duct cover 4 is removed by releasing the locking state between the fixed portion of the wiring duct 2 and the fixing portion 10 of the fixture 1. Next, the entire fixture 1 including the fixing portion 10 whose locking state with the fixed portion of the wiring duct 2 has been released is moved downward in the Z direction. Along with this, since the pressing portion 20 moves downward in the Z direction, the wiring C is pressed downward by the rod-shaped portion 21 and is sandwiched and aggregated between the rod-shaped portion 21 and the bottom surface portion 31 of the duct body 3. Thereby, when the duct cover 4 is removed, it is possible to prevent the scattering of the wiring C due to the excess-length wiring C protruding outside the duct body 3 or the like.

[0059] Also, as shown in FIG. 9, a plurality of fixtures 1 can be attached to the wiring duct 2 at arbitrary intervals. For example, in FIG. 9, one fixture 1 is attached to one side surface portion 32 side, and one fixture 1 is attached to the other side surface portion 32 side.

[0060] Next, with reference to FIG. 11, the fixture 100 of the comparative example will be described. FIG. 11 is a diagram showing the fixture of the comparative example. FIG. 11 shows a front view, a rear view, and a side view of the fixture 100 of the comparative example.

[0061] As shown in FIG. 11, the fixture 100 has an outer piece portion 110 and an inner piece portion 120. When the fixture 100 is attached to the wiring duct 2, the outer piece portion 110 is disposed outside the side surface portion 32. The inner piece portion 120 is disposed inside the side surface portion 32 through the through hole 323 from the outer piece portion 110. Further, a handle 130 protruding outward from the outer surface is provided on the surface of the outer piece portion 110 opposite to the side facing the inner piece portion 120.

[0062] And, unlike the fixture 1, the outer piece portion 110 has a flat surface formed on the side facing the inner piece portion 120. The surface on the side facing the inner piece portion 120 is, for example, a surface that abuts against the outer surface of the fixed portion (e.g., the externally fitted portion 42) of the wiring duct 2. When this surface is flat, when attaching the fixture 100 to the wiring duct 2 or after attachment, the fixed portion of the wiring duct 2 and the fixture 100 are likely to slip. If the fixture 100 is likely to slip, there is a risk that workability and fixing force will decrease.

[0063] Also, on the inner piece portion 120, there is no convex portion 19a provided on the surface on the side facing the outer piece portion 110. In this case, in order to securely fix the fixed portion (e.g., the fitted portion 324) of the wiring duct 2 using the fixture 100, it is necessary to ensure contact with the inner surface of the fixed portion of the wiring duct 2 (e.g., the inner surface of the fitted portion 324). Therefore, the shape of the fixture 100 needs to be designed such that the inner piece portion 120 can be locked along the shape of the inner surface of the fixed portion of the wiring duct 2 according to each individual wiring duct 2.

[0064] Here, FIG. 12 is a diagram for explaining the problems of the fixture of the comparative example. Further, FIG. 13 is a partially enlarged view of FIG. 12. Note that FIG. 12 schematically shows the case of viewing two types of wiring ducts 2 with different sizes from the X direction. Also, FIG. 13 is an enlarged view of the region surrounded by the broken line in FIG. 12.

[0065] As shown in FIG. 12, the wiring duct 2 is individually designed according to the application. Also, in the wiring duct 2, in order to prevent the duct cover 4 from coming off the duct body 3 due to the installation direction or external vibration, etc., as described above, the duct body 3 and the duct cover 4 may be fitted together.

[0066] As shown in FIG. 13, when fitting the duct body 3 and the duct cover 4 together, a fitting state is constructed by fitting the end portion on the duct cover 4 side of the side surface portion 32 and the externally fitted portion 42 of the duct cover 4.

[0067] However, since various structures are adopted for the fitting structure depending on the type of the wiring duct 2, the shapes of the duct body 3 and the duct cover 4 including the fitting structure are different depending on the type of the wiring duct 2. Therefore, when using the fixture 100, there may be a case where the same fixture 100 cannot be applied to different types of wiring ducts 2. Thus, it is necessary to perform a dedicated design for each wiring duct 2 and manufacture many fixtures 100 according to the type of the wiring duct 2. In this way, in the configuration of the fixture 100 that locks the fixed portion along the shape of the fixed portion of the wiring duct 2, there is a problem of low versatility.

[0068] Furthermore, as shown in FIG. 11, for example, in the fixture 100, the width W20 in the X direction of the outer piece portion 110 is set to be larger than the width W1 in the X direction of the through hole 323. Also, the overall width W40 in the X direction of the inner piece portion 120 is set to be smaller than the width W1 in the X direction of the through hole 323.

[0069] The problems that may occur in this case will be described with reference to FIGS. 14 and 15. FIG. 14 is a diagram for explaining another problem regarding the fixture of the comparative example. FIG. 15 is a diagram for explaining the details of FIG. 14.

[0070] As shown in FIG. 14, when using the fixture 100, when removing the fixture 100 from the wiring duct 2, the fixture 100 may fall off from the wiring duct 2 and fall outside the wiring duct 2, or fly somewhere with the momentum of removal. Therefore, when removing the fixture 100 from the wiring duct 2, there is a possibility of losing the fixture 100.

[0071] As shown in FIG. 15, as a factor for the fixture 100 to fall off from the wiring duct 2, the wiring duct 2 has the shape of the through hole 323, that is, the width W1 of the through hole 323 is individually designed. For example, when the width W1 of the through hole 323 and the width W40 of the inner piece portion 120 match (the wiring duct 2 of the small size illustrated in FIG. 15), an extra gap hardly occurs between the through hole 323 and the inner piece portion 120, and the fixture 100 hardly falls off.

[0072] On the one hand, when the width W1 of the through hole 323 is sufficiently larger than the width W40 of the inner piece portion 120 (the wiring duct 2 of the large size illustrated in FIG. 15), an extra gap is generated between the through hole 323 and the inner piece portion 120. When there is an extra gap, the inner piece portion 120 can easily pass through the through hole 323 in the posture at the time of attachment. For example, when the hand is released from the fixture 100 during removal of the fixture 100, the fixture 100 drops off from the wiring duct 2.

[0073] Furthermore, referring to FIG. 16, another problem will be described. FIG. 16 is a diagram for explaining another problem regarding the fixture of the comparative example. As shown in FIG. 16, in the wiring duct 2 provided in a distribution board, a sub-distribution board, a machine tool, or the like, in order to cope with design changes and the like, the wiring C is often made longer than the required length and stored inside the wiring duct 2. In the case of such a wiring duct 2, inside the wiring duct 2, the extra length of the wiring C becomes a messy state.

[0074] For example, when the duct cover 4 is opened with the wiring duct 2 in which the wiring C is stored in a messy manner facing such that the opening 30 of the duct body 3 is along the vertical direction, the wiring C drops and scatters due to its own weight, resulting in poor workability. When the fixture 100 is used for such a wiring duct 2, since the fixture 100 does not include the pressing portion 20, scattering of the wiring C cannot be prevented. And when the wiring C scatters or when the scattered wiring C is stored, a plurality of wirings C may be entangled with each other due to bending or the like, and there is a risk of damaging the wiring C. If the damaged wiring C is directly connected to an electric device or the like and used, problems such as poor connection may occur.

[0075] On the other hand, the fixture 1 according to the present embodiment includes an outer piece portion 11 disposed outside the side surface portion 32 of the duct main body 3, and an inner piece portion 12 disposed inside the side surface portion 32 through a through hole 323 penetrating the inside and outside of the side surface portion 32 from the outer piece portion 11. The inner piece portion 12 has a flat surface portion 18 parallel to the outer piece portion 11 on the side of the connecting portion 17 connected to the outer piece portion 11, and a locking portion 19 that locks the duct main body 3 from the inside and has a convex portion 19a provided on the side facing the outer piece portion 11. The outer piece portion 11 locks the duct cover 4 from the outside, and at least a region corresponding to the locking portion 19 on the surface facing the inner piece portion 12 is formed in an uneven shape. The outer piece portion 11 and the inner piece portion 12 sandwich the fixed portion of the duct main body 3 and the fixed portion of the duct cover 4 by overlapping them between each other.

[0076] The fixture 1 according to the present embodiment has the outer piece portion 11 and the inner piece portion 12 having the above-described configuration. Since the region of the outer piece portion 11 that abuts against the outer surface of the fixed portion of the wiring duct 2 is formed in an uneven shape, when attaching or fixing to the fixed portion of the wiring duct 2, the fixed portion (outer fitting portion 42) can be locked from the outside without slipping. Further, the inner piece portion 12 provided with the convex portion 19a protruding toward the outer piece portion 11 can reliably bring the convex portion 19a into contact with the inner surface of the fixed portion (fitted portion 324) of the wiring duct 2 and lock the fixed portion from the inside. Thereby, the outer piece portion 11 and the inner piece portion 12 can sandwich the fixed portion by overlapping it in the mutual gap S. Therefore, the fixed portion can be easily fixed, and the workability is good.

[0077] Further, even when the shapes of the duct main body 3 and the duct cover 4, the design of the fitting structure between the fixed portions, etc. differ depending on the type of the wiring duct 2, it is not necessary to individually design and manufacture the fixture 1 for each wiring duct 2. For example, since one type of fixture 1 can be applied to a plurality of types of wiring ducts 2, the fixture 1 has high versatility and is economical.

[0078] Further, by making the width W2 of the outer piece portion 11 larger than the width W1 of the through hole 323 of the duct body 3 of the fixture 1 and making the width of the inner piece portion 12 partially larger than the width W1 of the through hole 323, it is possible to suppress the detachment of the fixture 1 that may occur when removing the fixture 1 from the wiring duct 2. Thereby, when using the fixture 1, the possibility of losing the fixture 1 when removing the fixture 1 from the wiring duct 2 can be reduced.

[0079] Further, according to the configuration of the above embodiment, the fixture 1 can be provided with the pressing portion 20. By using the fixture 1 provided with the pressing portion 20, it is possible to suppress the scattering of the wiring C when removing the duct cover 4 from the wiring duct 2. Therefore, when the fixture 1 is used, the workability is improved.

Explanation of Signs

[0080] 1 Fixture 2 Wiring duct 3 Duct body 4 Duct cover 10 Fixing portion 11 Outer piece portion 12 Inner piece portion 13 Handle 14 Upper end portion 15 Central portion 16 Lower end portion 16a Hole 17 Connecting portion 18 Flat portion 19 Locking portion 19a Convex portion 20 Pressing portion 21 Rod-shaped portion 22 Holder portion 22a Groove 22b Protrusion 23 Handle 30 Opening 31 Bottom surface portion 32 Side surface portion 41 Closing portion 42 Outer fitting portion 100 Fixture 110 Outer piece portion 120 Inner piece portion 130 Handle 323 Through-hole 324 Fitted portion 421 Fitting portion C Wiring S Gap S1 Opening Widths of W1, W2, W3, W4, W20, W40

Claims

【Claim 1】 A fixture for fixing a duct cover that closes the duct body to the duct body, The fixture is, An outer piece portion disposed outside the side surface portion of the duct body, and An inner piece portion disposed inside the side surface portion through a through hole penetrating the inside and outside of the side surface portion from the outer piece portion, and has, The inner piece portion is, A flat surface portion parallel to the outer piece portion on the connecting portion side connected to the outer piece portion, and On the side opposite to the connecting portion side, the duct body is locked from the inside, and a locking portion provided with a convex portion on the side facing the outer piece portion, and has, The outer piece portion locks the duct cover from the outside, and at least a region corresponding to the locking portion among the surfaces on the side facing the inner piece portion is formed in an uneven shape, The outer piece portion and the inner piece portion sandwich the fixed portion of the duct body and the fixed portion of the duct cover by overlapping them between each other, The width of the connecting portion and the width of the flat surface portion are each smaller than the width of the through hole, The locking portion is formed in a tapered shape in which the width gradually increases from the base end connected to the flat surface portion toward the tip end opposite to the base end, The width of the base end is smaller than the width of the through hole, A fixture in which the width of the tip end is larger than the width of the through hole.

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