Ditch cover fixing device

Abstract

To provide a ditch cover fixing device capable of stably fixing a ditch cover to a lid receiver frame arranged in a groove path.SOLUTION: A head 33 of a fixing bolt 31 and a dropout prevention member 25 made of an elastic wire are introduced into an accommodation airspace 15 of a storage chamber 11 provided below a top face of a ditch cover 1 via a head insertion port 16 opened to one lateral side, thereby allowing the fixing bolt 31 to be held in the accommodation airspace 15. The dropout prevention member 25 includes a wound portion 26 through which a male screw portion of the fixing bolt 31 is inserted and substantially semicircular extension portions 27, 27 extending right and left outward from the wound portion 26, so that the extension portions 27, 27 are inserted via the head insertion port 16 by being elastically deformed inward and are restored in the accommodation airspace 15 to prevent dropout.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a gutter cover fixing device for fixing a gutter cover to a cover receiving frame arranged in a gutter. [Background technology]

[0002] A gutter cover that covers the upper opening of a gutter such as a side gutter or a cross gutter is placed on a cover frame disposed on the gutter and attached to the gutter. The gutter cover and the cover frame are fixed together with the gutter cover attached to the cover frame. For example, Patent Document 1 discloses a configuration for fixing the gutter cover and the cover frame in this manner, in which a bolt is erected on the cover frame disposed on the gutter, a bottom plate with a bolt insertion hole is disposed at a predetermined position on the underside of the gutter cover corresponding to the bolt, and a nut is screwed onto the bolt inserted from below into the bolt insertion hole of the bottom plate to tighten the bolt, thereby fixing the gutter cover to the cover frame. In the gutter cover of this configuration, an accommodation recess that opens upward is formed on the bottom plate, and the nut screwed onto the bolt is accommodated in the accommodation recess and the tip of a box wrench that rotates the nut can be inserted into the accommodation recess. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2000-45376 A (see paragraph 0002, FIG. 10) Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional configuration described above, the receiving recess formed in the groove cover is formed with a relatively large opening upward so that the tip of a box wrench for rotating the nut can be inserted. If the receiving recess is left open, the heel of a high heel or the tip of a walking stick can easily get stuck in it, so it is necessary to attach a cap to the receiving recess and close it. However, this cap is generally only fitted into the receiving recess so that it is easy to attach and remove, so there is a risk that it will float up or come off when a car, bicycle, etc. passes by. When the cap is removed, the receiving recess is exposed, making it easy for the heel of a high heel to get stuck in it and damaging the aesthetic appearance of the groove cover. Furthermore, since the cap is easy to remove as described above, there is a risk that tampering such as removing the cap and loosening the nut may occur.

[0005] The present invention is capable of solving the above-mentioned problems, and proposes a gutter cover fixing device capable of stably fixing a gutter cover to a cover receiving frame. [Means for solving the problem]

[0006] The present invention relates to a groove cover fixing device for fixing a groove cover to a lid receiving frame disposed in a groove by being placed on the lid receiving frame and covering the groove, the device being provided below an upper surface of the lid of the groove cover, and comprising an accommodation chamber portion having an accommodation space for accommodating a head of a fixing bolt for fixing the groove cover to the lid receiving frame, an insertion hole for allowing a male screw portion of the fixing bolt to project downward, a head insertion opening through which the head of the fixing bolt can be inserted into the accommodation space from one side, and a male screw portion insertion opening through which the male screw portion of the fixing bolt can be inserted into the insertion hole from one side, and a drop prevention means for holding the fixing bolt, the head of which is accommodated in the accommodation space of the accommodation chamber portion, without allowing it to fall out of the accommodation chamber portion, and the accommodation chamber portion having an insertion hole for allowing a male screw portion of the fixing bolt to project downward, the insertion hole for allowing a male screw portion of the fixing bolt to project downward, and a drop prevention means for holding the fixing bolt, the head of which is accommodated in the accommodation space of the accommodation chamber portion, without allowing it to fall out of the accommodation chamber portion, The storage space is formed to be wider to the left and right than the head insertion opening, and the anti-falling means is formed of an elastic wire, and includes an anti-falling member formed of an elastic wire, the approximate center of which has an approximately annular wound portion wound around the head so that the male threaded portion of the fixing bolt can be inserted through it but the head cannot be inserted through it, and an extension portion extending outward to the left and right from the wound portion, respectively, and the anti-falling member, with the male threaded portion of the fixing bolt inserted into the wound portion, is elastically deformed inwardly to restore the left and right extension portions in the storage space entered through the head insertion opening, thereby holding the anti-falling member in place from the head insertion opening so that it cannot fall out.This is a groove cover fixing device characterized in that the anti-falling member is formed of an elastic wire, and the approximately central portion of the elastic wire has an approximately annular wound portion wound around the head so that the male threaded portion of the fixing bolt can be inserted through it but the head cannot be inserted through it, and an anti-falling member extending outward to the left and right from the wound portion,

[0007] In this configuration, the fixing bolt can be held by the anti-fall-out member with the male screw portion inserted into the winding portion in a state where the head is accommodated in the accommodation space and the male screw portion is inserted into the insertion hole (hereinafter referred to as the attached state), so the fixing bolt will not fall and be lost when fixing the gutter cover to the cover receiving frame at the construction site, and it is possible to prevent the work from becoming complicated due to loss. Furthermore, since the fixing bolt can be prevented from falling off, the burden of work at the construction site can be reduced by putting the fixing bolt into the attached state before transporting the gutter cover to the construction site.

[0008] Here, the fall-off prevention member can narrow its left-right width by elastically deforming the left and right extensions inward, so that it can enter the storage space through the head insertion opening, and after the entry, the left and right extensions are restored outward, so that it cannot escape from the head insertion opening. This allows the fixing bolt with the male screw part inserted into the winding part to be stably held in the attached state (the head is housed in the storage space and the male screw part is inserted into the insertion hole) so that it cannot fall off. Furthermore, the fall-off prevention member can be pushed into the head insertion opening from one side, elastically deforming the left and right extensions, so that it can enter the storage space relatively easily, and the work of putting the fixing bolt into the attached state can be easily performed.

[0009] Furthermore, because the configuration of the present invention allows the head of the fixing bolt to be inserted through a head insertion port opening on one side into the storage space of the storage chamber provided below the top surface of the lid of the gutter cover, there is no need for an upper opening for inserting the bolt from above, as in the conventional configuration described above. As a result, the present invention does not cause the problems of the conventional configuration in that the heel of a high heel or the tip of a cane easily gets stuck, or that the cap covering the upper opening comes off.

[0010] In the gutter cover fixing device of the present invention described above, the left and right extensions of the fall-off prevention member are formed in a generally semicircular arc shape with a larger diameter than the wound part, and are positioned respectively on the left and right outside of the wound part, and the width between at least the left and right outermost edges of the left and right extensions is longer than the left and right width of the head insertion opening of the storage chamber. Here, it is preferable that the left and right extensions are formed in a generally semicircular arc shape that is symmetrical.

[0011] In such a configuration, by pushing the anti-fall-off member, with the male thread portion of the fixing bolt inserted into the winding portion, into the head insertion opening, the left and right extension portions can be easily elastically deformed approximately symmetrically, so that the anti-fall-off member can be prevented from rotating when entering through the head insertion opening, and by restoring within the storage space, it is held even more stably in a state where it cannot fall off from the head insertion opening. Here, in the case where the left and right extensions extend linearly outward from the winding portion to the left and right, when the head insertion opening is pushed in a biased manner to one side, one extension will be elastically deformed more than the other, causing the fall-off prevention member to rotate. Therefore, for example, one extension may enter the storage space, but the other extension (end) may not be able to enter the storage space, and the head of the fixing bolt may be stored in the storage space. If the fixing bolt enters the storage space in this way, the fixing bolt cannot be held in the desired position in the storage space, and the retention of the storage space by the fall-off prevention member by the fall-off prevention member becomes unstable. This configuration can prevent entry into the storage airspace in such an unstable state, and since entry can be achieved by elastically deforming both the left and right extension parts in approximately the same manner, entry into the storage airspace can be made easily and stably, and the fixing bolt can be held even more stably in the installed state.

[0012] In the above-mentioned groove cover fixing device of the present invention, a configuration is proposed in which the wound portion of the anti-fall-off member is formed by winding an elastic wire once.

[0013] In this configuration, the thickness of the wound portion is the thinnest, so the height of the accommodation space for accommodating the head of the fixing bolt can be reduced, and the height of the accommodation chamber can be reduced as much as possible, so that the accommodation chamber can be formed compactly and can be suitably installed even in a relatively small groove cover. Effect of the Invention

[0014] The gutter cover fixing device of the present invention improves safety when walking because it does not require an upwardly opening storage recess or cap as in the conventional configuration described above. Furthermore, since the fixing bolt can be stably held in the attached state (a state in which the head is stored in the storage space and the male screw portion is inserted into the insertion hole) so that it cannot fall off, the workload required for construction can be reduced. [Brief description of the drawings]

[0015] [Figure 1] A vertical cross-sectional view showing the installed state of the gutter cover 1 and the cover receiving frame 41. [Diagram 2]1 is a plan view showing a state in which a lid receiving frame 41 and a groove lid 1 are attached to a groove 51. FIG. [Diagram 3] 2 is a cross-sectional view taken along line XX in FIG. 1. [Figure 4] 1A is a plan view showing an end portion of a groove cover 1, and FIG. 1B is a partially cut-away plan view showing the end portion of the groove cover 1. [Diagram 5] 5A is a cross-sectional view taken along line LL in FIG. 4, (B) is a cross-sectional view taken along line MM, and (B) is a cross-sectional view taken along line NN in FIG. [Figure 6] 1A is a plan view showing a fall-prevention member 25, and FIG. 1B is a plan view showing a state in which a male screw portion 32 of a fixing bolt 31 is inserted into a wound portion of the fall-prevention member 25. FIG. [Figure 7] 13 is an explanatory diagram showing the process of inserting the anti-fall-off member 25, with the male thread portion 32 of the fixing bolt 31 inserted into the winding portion 26, into the accommodation space 15. FIG. [Figure 8] FIG. 8 is an explanatory diagram showing the process of approaching the accommodation airspace 15, continuing from FIG. 7. [Figure 9] 1A is a plan view showing another example of a fall-prevention member 65, and FIG. 1B is an explanatory diagram showing the state in which the fixing bolt 31 and the fall-prevention member 65 have been inserted into the storage space 15 of the gutter cover 1. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] An embodiment of the present invention will be described with reference to the accompanying drawings. As shown in FIG. 1, the channel 51 is formed by burying a row of U-shaped channel blocks 52 having a substantially U-shaped cross section at a predetermined depth in the ground. A lid receiving frame 41 is disposed on the upper part of the channel 51. The lid receiving frame 41 is composed of a pair of left and right support frames 42, 42 disposed opposite each other on the left and right side walls 53, 53 constituting the U-shaped channel block 52, a plurality of connecting rods 48 horizontally disposed between the left and right support frames 42, 42, and a lid receiving rod 49 disposed between the upper parts of the support frames 42, 42, and the left and right support frames 42, 42 are connected by the connecting rods 48. Here, the support frame 42 has a horizontal edge portion 43 placed on the side wall 53 of the U-shaped channel block 52 and a vertical edge portion 44 rising from the inner end of the horizontal edge portion 43, and its length is a predetermined length corresponding to the length of several U-shaped channel blocks 52. The left and right support frames 42, 42 have their outer edges of the horizontal edges 43, 43 resting on the side walls 53, 53, and their vertical edges 44, 44 facing each other at a predetermined interval in the approximate center of the upper part of the groove 51. A water passage opening 46 having a width narrower than the upper opening of the U-shaped groove block 52 is formed between the two vertical edges 44, 44, and the upper opening other than the water passage opening 46 is blocked by the horizontal edges 43, 43 of the two support frames 42, 42. In this way, the groove 51 opens upward at the water passage opening 46 when the left and right support frames 42, 42 are disposed, and therefore the upper opening of the groove 51 is formed by the water passage opening 46. Such a support frame 42 can be formed by processing metal plate material such as steel or stainless steel. For example, it may be formed by bending a single metal plate into an L-shaped cross section, or it may be formed by welding two metal plates together to form an L-shaped cross section.

[0017] The connecting rods 48 are made of metal square pipes (see FIG. 3), and are arranged at a predetermined interval in the longitudinal direction. As shown in FIGS. 1 to 3, each connecting rod 48 is arranged in contact with the upper surface of the horizontal edge portions 43, 43 of the support frames 42, 42, and is joined by welding to the horizontal edge portions 43, 43 or to the horizontal edge portions 43, 43 and the edge of the through hole while being inserted into a through hole (not shown) formed in each vertical edge portion 44, 44. Each connecting rod 48 thus connecting the support frames 42, 42 has both ends placed on the upper surfaces of the left and right side walls 53, 53 constituting the groove 51, via the horizontal edge portions 43, 43 of both support frames 42, 42. Furthermore, fixing plates (not shown) are welded to both ends of each connecting rod 48 and are suspended downward along the outer wall surface of the side wall 53, and screw rods (not shown) are screwed into the fixing plates from the outside. The tips of the left and right screw rods are pressed against the outer wall surfaces of the side walls 53, 53, and the connecting rods 48 and the support frames 42, 42 are fixed to the side walls 53, 53 through this tightening action. In this fixed state, concrete 61, tiles 62, etc., which are laid around the upper part of the groove 51, are continuously laid on the horizontal edges 43, 43 of the left and right support frames 42, 42, as shown in FIG. 1.

[0018] Furthermore, the lid receiving rods 49 are made of metal square pipes (see Fig. 3) and are disposed at positions corresponding to at least the vicinity of both longitudinal ends of the gutter cover 1 described below, as shown in Fig. 2. Both ends of each lid receiving rod 49 are joined by welding to the upper ends of the vertical edges 44, 44 of the left and right support frames 42, 42. The height position at which the lid receiving rod 49 is joined to the vertical edges 44 is set so that the lid top surface of the gutter cover 1 approximately coincides with the upper ends of the vertical edges 44 when the gutter cover 1 is placed on the lid receiving rod 49.

[0019] As shown in Figs. 1 to 5, the gutter cover 1 is disposed at the water passage opening 46 formed between the vertical edges 44, 44 of the support frames 42, 42 in the lid receiving frame 41. The gutter cover 1 is disposed with both longitudinal edges resting on the lid receiving rods 49. The gutter cover 1 is made of cast iron and integrally molded by casting. As shown in Fig. 2, the gutter cover 1 is a grating having longitudinal side bars 2 disposed on both sides in the width direction, end bars 3 disposed between the left and right side bars 2, 2 at both longitudinal ends, and a plurality of main bars 4 disposed between the left and right side bars 2, 2 between the end bars 3, 3 at both ends. A plurality of main bars 4 are arranged in parallel at a predetermined interval in the longitudinal direction, and the end bars 3, 3 are arranged in parallel at the same interval as the main bars 4. The side bars 2, end bars 3, and main bars 4 are connected at their intersections.

[0020] Here, the main bar 4 and the end bar 3 have a generally flat upper portion that protrudes upward from the side bar 2, and this upper portion forms the upper surface (lid upper surface) of the gutter cover 1. The side bar 2 protrudes downward compared to the main bar 4, and the gutter cover 1 is placed on the lid receiving rod 49 with the gutter cover 1 attached to the lid receiving frame 41. The side bar 2 has positioning portions 7, 7 at both ends in the longitudinal direction for determining the front-to-rear position of the lid receiving rod 49, spaced apart at approximately the same interval as the width of the lid receiving rod 49 (the width along the longitudinal direction of the groove 51). The positioning portions 7, 7 make it possible to easily position the gutter cover 1 in the lid receiving frame 41.

[0021] Such a gutter cover 1 is attached to the water passage opening 46 described above, and has a width dimension slightly narrower than the distance between both vertical edges 44, 44 that form the water passage opening 46. The distance between adjacent main bars 4, 4 is relatively narrow so that the heel of a high heel or the tip of a walking stick will not easily get caught in it.

[0022] Next, the main part of the present invention will be described. As shown in Fig. 3, the gutter cover 1 and the lid receiving frame 41 are provided with a gutter cover fixing device 10 for fixing the gutter cover 1 to the lid receiving frame 41. This gutter cover fixing device 10 includes an accommodation chamber portion 11 provided integrally with the gutter cover 1, a fixing bolt 31 and a nut member 36 for fixing the accommodation chamber portion 11 to the lid receiving rod 49, and a fall prevention member 25 for holding the fixing bolt 31 from the accommodation chamber portion 11 so that it cannot fall off.

[0023] As shown in Figures 1 to 4, the gutter cover 1 is provided at both longitudinal ends with accommodation chambers 11 in which fixing bolts 31 for fixing the gutter cover 1 to support frames 42, 42 are disposed. Meanwhile, the cover receiving rods 49 on which both longitudinal ends of the gutter cover 1 rest are provided with through holes (not shown) for the male threaded portions 32 of the fixing bolts 31 disposed in the accommodation chambers 11 as shown in Figure 3. Here, the fixing bolts 31 are provided with a round-headed head 33 provided with a cross-shaped hole (not shown) into which the tip of a Phillips screwdriver is inserted, and the male threaded portion 32 protruding downward from the lower end of the head 33, and are so-called round-headed bolts. As described below, with the head 33 of this fixing bolt 31 accommodated within the accommodation chamber portion 11, the male screw portion 32 is inserted through the through hole of the lid receiving rod 49 and screwed into the nut member 36, thereby fixing the gutter cover 1 to the lid receiving rod 49 (lid receiving frame 41).

[0024] The accommodation chamber 11 is molded integrally with the groove cover 1 by casting. As shown in Figs. 3 to 5, the accommodation chamber 11 is provided under two main bars 4, 4 arranged near both ends of the groove cover 1 in the longitudinal direction, and includes left and right wall portions 12, 12 protruding downward from the main bars 4, 4, and a substantially flat bottom plate portion 13 extending between the left and right wall portions 12, 12, and the bottom plate portion 13 is provided at a distance downward from the main bars 4, 4. The substantially rectangular parallelepiped air space surrounded by the two main bars 4, 4, the bottom plate portion 13, and the left and right wall portions 12, 12 is the accommodation air space 15 for accommodating the head portion 33 of the fixing bolt 31. The accommodation air space 15 is capable of accommodating the head portion 33 of the fixing bolt 31, and has a space in which the head portion 33 can be rotated while being accommodated (see Fig. 8). That is, the height of the accommodation space 15 is greater than the head 33 of the fixing bolt 31 , and the left-right width and longitudinal width of the accommodation space 15 are greater than the outer diameter of the head 33 .

[0025] Furthermore, the housing chamber 11 is provided with a head insertion opening 16 and an outer opening 17 that open the housing space 15 to both sides in the longitudinal direction, and the head insertion opening 16 is formed to open inward and the outer opening 17 is formed to open outward. The head insertion opening 16 and the outer opening 17 are provided at approximately the center of the housing chamber 11 in the width direction and are provided with an opening width narrower than the housing space 15. That is, the housing space 15 is formed to be wider on both the left and right sides than the head insertion opening 16 and the outer opening 17 (in other words, it is formed to be wider in a direction approximately perpendicular to the insertion direction of the head insertion opening 16). The head insertion opening 16 is formed so that the head 33 of the fixing bolt 31 can be inserted therethrough, and has a height higher than the height of the head 33 and a width wider than the outer diameter of the head 33. In this embodiment, the head insertion opening 16 and the outer opening 17 are formed to have approximately the same shape and dimensions.

[0026] Further, in the bottom plate portion 13 of the accommodation chamber portion 11, an insertion hole 18 through which the male screw portion 32 of the fixing bolt 31 is inserted is formed in the approximate center, and a male screw portion insertion port 19 is formed in communication with the insertion hole 18 and opens inward in the same direction as the head insertion port 16. Here, the hole diameter of the insertion hole 18 is larger than the outer diameter of the male screw portion 32 and smaller than the outer diameter of the head 33 of the fixing bolt 31. Similarly, the male screw portion insertion port 19 has a left-right width larger than the outer diameter of the male screw portion 32 and smaller than the outer diameter of the head 33.

[0027] The fixing bolt 31 can be attached to the receiving chamber 11 with the head 33 housed in the receiving space 15 and the male screw portion 32 protruding downward from the insertion hole 18 (see FIG. 8). That is, the fixing bolt 31 is attached in the above-mentioned state (hereinafter referred to as the attached state) in which the head 33 is housed in the receiving space 15 and the male screw portion 32 is inserted into the insertion hole 18 by inserting the head 33 of the fixing bolt 31 through the head insertion opening 16 and the male screw portion 32 through the male screw portion insertion opening 19 (see FIGS. 7 and 8). Here, since the longitudinal length of the receiving space 15 is larger than the outer diameter of the head 33 and the insertion hole 18 and the male screw portion insertion opening 19 are in communication with each other, the longitudinal position of the fixing bolt 31 can be slightly changed in the above-mentioned attached state. That is, this attached state does not indicate a specific position of the fixing bolt 31, but simply indicates a state in which the head 33 is accommodated in the accommodation space 15 and the male thread portion 32 is inserted into the insertion hole 18. The fixing bolt 31 in this attached state can be adjusted in position so as to be inserted into the through hole of the lid receiving rod 49 when the groove cover 1 is placed on the lid receiving rod 49 as described above.

[0028] In addition, as shown in Fig. 4, the two main bars 4, 4 located on the accommodation chamber 11 are formed with opposing recesses 20, 20 in the center in the width direction (left and right direction), and the recesses 20, 20 form an insertion gap through which a Phillips screwdriver for rotating the fixing bolt 31 can be inserted and the Phillips screwdriver can be rotated in the inserted state. This insertion gap (recesses 20, 20) is formed directly above the insertion hole 18 of the bottom plate 13. Here, since the Phillips screwdriver for operating the fixing bolt 31 has a relatively long and thin round rod-shaped shaft, the insertion gap (recesses 20, 20) only needs to have a width that allows the shaft of the Phillips screwdriver to be inserted. Therefore, the insertion gap is formed with a width that does not allow the heel of a high heel or the tip of a cane to fit in.

[0029] 6, the fall-off prevention member 25 is a curved elastic wire having a small diameter, and includes a wound part 26 wound around the approximate center of the elastic wire, and extending parts 27, 27 having a roughly semicircular arc shape extending outward to the left and right from the wound part 26. The elastic wire constituting the fall-off prevention member 25 is made of stainless steel and has a circular cross section.

[0030] Here, the winding portion 26 is formed by winding the elastic filament in a substantially elliptical shape, and the male screw portion 32 of the fixing bolt 31 can be inserted therethrough. That is, the minor axis (left-right distance) of the winding portion 26 is longer than the outer diameter of the male screw portion 32 of the fixing bolt 31 and is substantially the same as (or longer than) the outer diameter of the insertion hole 18, and is shorter than the outer diameter of the head 33 of the fixing bolt 31 and the left-right width of the head insertion opening 16. On the other hand, the left and right extending portions 27, 27 are formed in a substantially semicircular arc shape larger in diameter than the minor axis of the winding portion 26, are provided substantially concentrically outside the winding portion 26, and are disposed substantially symmetrically in a plan view. The left and right extending portions 27, 27 have a width (corresponding to the outer diameter) r between the left and right outermost edge portions longer than the left-right width of the head insertion opening 16 and shorter than the width of the accommodation space 15. The left and right extending portions 27, 27 are positioned outside the head 33 of the fixing bolt 31 when the male thread portion 32 of the fixing bolt 31 is inserted through the winding portion 26. In this embodiment, the longitudinal width of the extending portions 27, 27 is longer than the longitudinal width of the accommodation space 15. Therefore, when the head 33 of the fixing bolt 31 is accommodated in the accommodation space 15, both longitudinal ends of the extending portions 27, 27 are positioned outside the accommodation space 15.

[0031] Such a drop-out prevention member 25 cannot pass through the head insertion opening 16 of the storage chamber 11 in a normal state (FIG. 6), but can pass through the head insertion opening 16 by elastically deforming the left and right extensions 27, 27 inward to reduce the width between the outermost edges (see FIG. 7). Then, when it enters the storage space 15 through the head insertion opening 16, it returns to its normal state (see FIG. 8). The drop-out prevention member 25 thus returned to its normal state within the storage space 15 cannot pass through the head insertion opening 16 unless it is elastically deformed in the same manner as described above, and it is difficult to cause such elastic deformation within the storage space 15. Therefore, the drop-out prevention member 25 is held within the storage space 15 so as not to fall off.

[0032] As described above, the fall-off prevention member 25 is for attaching the fixing bolt 31 to the accommodation chamber portion 11 so that it cannot fall off. That is, with the male thread portion 32 of the fixing bolt 31 inserted into the wound portion 26 of the fall-off prevention member 25 from above, the head 33 of the fixing bolt 31 and the fall-off prevention member 25 are pushed in from the outside of the head insertion opening 16 as shown in Fig. 7. At this time, the fall-off prevention member 25 has the crossing portion of its elastic filaments facing the head insertion opening 16. When the fall-off prevention member 25 and the fixing bolt 31 are pushed in the head insertion opening 16, the left and right extension portions 27, 27 are pressed against the left and right edges (left and right wall portions 12, 12) of the head insertion opening 16 and elastically deform inward. By pushing the drop-prevention member 25 into the head insertion opening 16 in this manner, the left and right extensions 27, 27 of the drop-prevention member 25 are elastically deformed and pass through the head insertion opening 16. Here, the drop-prevention member 25 of this embodiment has the substantially semicircular arc-shaped extensions 27, 27 provided symmetrically on the left and right, so that when pushed into the head insertion opening 16, it is difficult to rotate in the circumferential direction and can pass through the head insertion opening 16 stably. When the drop-prevention member 25 and the head 33 of the fixing bolt 31 pass through the head insertion opening 16 and enter the storage space 15 in this manner, the drop-prevention member 25 is restored to its original state as shown in FIG. 8. When the drop-prevention member 25 is disposed in the storage space 15 in this manner, the drop-prevention member 25 cannot escape from the head insertion opening 16, and therefore the fixing bolt 31 with the male screw portion 32 inserted into the winding portion 26 cannot fall off due to the drop-prevention member 25. The fixing bolt 31 is thus held in a state where it is attached to the accommodation chamber portion 11 (attached state) by the fall-off prevention member 25.

[0033] Next, a manner in which the gutter cover 1 is attached to the cover receiving frame 41 by the gutter cover fixing device 10 will be described. As described above, the channel 51 has the lid receiving frames 41, 41 arranged on the left and right side walls 53, 53, and the water passage opening 46 is formed between the vertical edge portions 44, 44 of the support frames 42, 42 (see Figs. 1 and 2). The gutter lid 1 is placed on a plurality of lid receiving rods 49 that are inserted across the left and right vertical edge portions 44, 44 that form the water passage opening 46.

[0034] Before the gutter cover 1 is placed on the lid receiving rods 49 of the lid receiving frame 41 (before it is attached to the water opening 46), the anti-fall-off members 25 and the fixing bolts 31 are attached to the accommodation chambers 11 on both longitudinal side edges. As described above, the fixing bolts 31 are attached to the accommodation chambers 11 in an attached state in which the heads 33 are housed in the accommodation space 15 by the anti-fall-off members 25 so that they cannot fall off, and therefore will not fall off when the gutter cover 1 is attached to the water opening 46. The gutter cover 1 with the fixing bolts 31 attached in this way is attached to the water opening 46 by placing both longitudinal side edges on the lid receiving rods 49, 49 (see Figures 1 and 2). At this time, by aligning the positioning portions 7, 7 provided on the side bar 2 of the gutter cover 1 with the lid receiving rod 49, the accommodation chamber portion 11 of the gutter cover 1 can be positioned directly above the lid receiving rod 49. Then, by adjusting the position of the fixing bolt 31 attached to the accommodation chamber portion 11, the male thread portion 32 of the fixing bolt 31 is inserted into the through hole of the lid receiving rod 49.

[0035] After the gutter cover 1 is placed on the lid receiving rods 49, 49 in this manner, the nut member 36 is screwed onto the male threaded portion 32 of the fixing bolt 31 that has passed through the through hole of the lid receiving rod 49. Then, a Phillips head screwdriver is inserted through the insertion gap (between the recesses 20, 20) directly above the accommodation chamber portion 11, and the fixing bolt 31 is rotated using the Phillips head screwdriver. This causes the fixing bolt 31 to be screwed into the nut member 36, and the gutter cover 1 can be fixed to the lid receiving rods 49, 49 on which both longitudinal side edges are placed by the tightening action caused by this screwing.

[0036] In the gutter cover fixing device 10 of the embodiment, as described above, the head 33 of the fixing bolt 31, the male screw portion 32 of which is inserted into the winding portion 26 of the fall-off prevention member 25, is inserted into the accommodation space 15 of the accommodation chamber portion 11 provided in the gutter cover 1 and accommodated therein, so that it can be held in a non-falling state. Since the fall-off prevention member 25 has semicircular arc-shaped extensions 27, 27 arranged approximately symmetrically on the left and right, it can easily enter the accommodation space 15 without rotating by being pushed into the accommodation space 15 through the head insertion opening 16, and by restoring itself in the accommodation space 15, the head insertion opening 16 is stably maintained in a state in which it cannot be inserted. According to the configuration of this embodiment, it is possible to prevent the fixing bolt 31 from falling during the work of laying the gutter cover 1 at the construction site. Furthermore, by attaching the fixing bolts 31 before transportation to the construction site, the work of attaching the fixing bolts 31 is not required during construction work, and the fixing bolts 31 will not be dropped and lost during transportation to the construction site. This reduces the workload at the construction site. In addition, the falling-off prevention member 25 has a relatively simple structure in which an elastic wire is wound, so it is easy to manufacture and can be easily attached to the accommodation space 15 via the head insertion port 16 as described above. Therefore, it has the excellent advantage of being able to reduce the workload required to attach the falling-off prevention member 25 as much as possible.

[0037] Furthermore, since the fixing bolt 31 is configured to enter the accommodation space 15 from the side and to be rotated by a Phillips screwdriver inserted through the insertion gap (between the recesses 20, 20) directly above the accommodation chamber 11, a relatively large recess is not formed on the top surface of the lid as in the conventional configuration described above, and a cap to close the recess is not required. That is, the configuration of this embodiment does not have a recess into which the heel of a high heel or the tip of a cane is likely to get stuck as in the conventional configuration described above, and does not have a cap that may come off due to the passing of a car. Thus, according to the configuration of this embodiment, it is possible to improve safety when walking and to stably hold the gutter cover 1 in a state where it is fixed to the cover receiving frame 41, 41. Furthermore, it is possible to prevent mischief such as removing the cap, and to maintain the aesthetic appearance of the gutter cover 1.

[0038] In addition, since the anti-fall-out member 25 of this embodiment has the winding portion 26 configured by winding an elastic wire once, the thickness in the vertical direction is the thinnest, and the height of the storage space 15 can be designed to be as low as possible.

[0039] The present invention is not limited to the above-described embodiment, and may be modified as appropriate within the scope of the present invention. For example, the dimensions and shapes of the gutter cover, the gutter cover frame, and the gutter cover fixing device may be modified as appropriate.

[0040] The gutter cover 1 in the above-mentioned embodiment has both longitudinal edges resting on the lid receiving rods 49 extending between the vertical edges 44, 44 of the left and right support frames 42, 42, but the present invention is not limited to this, and the left and right side edges (both widthwise edges) may be resting on lid receiving frames with an L-shaped cross section arranged on the left and right side walls of the gutter. In this configuration, the same effect as in the embodiment can be achieved by forming the same storage chambers as in the embodiment on the left and right side edges of the gutter cover, respectively.

[0041] In the above-described embodiment, one storage chamber section 11 is provided on each side edge of the gutter cover 1 in the longitudinal direction, but the number of storage chamber sections provided can be set appropriately depending on the size of the gutter cover and the receiving frame structure of the cover receiving frame, etc.

[0042] In the embodiment described above, the wound portion 26 of the fall-off prevention member 25 is configured by winding the elastic wire once, but the present invention is not limited to this and may be configured by winding the elastic wire multiple times.

[0043] In the above-described embodiment, the winding portion 26 of the anti-fall-off member 25 is configured by winding the elastic wire in a substantially elliptical shape, but this is not limited thereto, and the elastic wire may be wound in a substantially circular or elongated shape.

[0044] In the above-mentioned embodiment, the fall-off prevention member 25 is configured to have the extensions 27, 27 of a substantially semicircular arc shape, but the shape of the extensions can be changed as appropriate. For example, as shown in FIG. 9, the fall-off prevention member 65 can be formed from an elastic filament as in the embodiment, and can be configured to have a wound portion 66 and curved extensions 67, 67 extending from the wound portion 66 to the left and right, respectively. Here, the left and right extensions 67, 67 are formed substantially symmetrically. In the configuration of this other example, when the head 33 of the fixing bolt 31 with the male screw portion 32 inserted into the wound portion 66 is inserted into the head insertion opening 16, it can pass through the head insertion opening 16 by pushing it into the head insertion opening 16, and can be restored in the accommodation space 15 and held in an incapable of falling off. Even in the configuration of this other example, the fixing bolt 31 can be inserted into the accommodation space 15 through the head insertion opening 16, and can be held in an attached state. [Explanation of symbols]

[0045] 1 groove lid 2. Sidebar 3 End Bar 4. Main Bar 7 Positioning part 10 Groove lid fixing device 11 Containment Room 12 Wall 13 Bottom plate part 15 Containment Airspace 16 Head insertion port 17 Outer opening 18 Insertion hole 19 Male screw insertion port 20 Recess 25,65 Anti-falling member 26,66 Winding section 27,67 Extension 31 Fixing bolt 32 Male thread 33 Head 36 Nut material 41 Lid holder frame 42 Support Frame 43 horizontal edge 44 Vertical edge 46 Water outlet section 48 Connecting rod 49 Lid holder 51 Mizoji 52 U-shaped groove block 53 Side wall 61 Concrete 62 tiles

Claims

1. A gutter cover fixing device for fixing a gutter cover to a cover receiving frame disposed in a gutter, the cover receiving frame being placed on the gutter cover to cover the gutter, a receiving chamber portion provided below the upper surface of the groove cover, the receiving chamber portion having an accommodation space for receiving a head of a fixing bolt for fixing the groove cover to the lid receiving frame, an insertion hole for allowing the male screw portion of the fixing bolt to protrude downward, a head insertion opening allowing the head of the fixing bolt to be inserted into the accommodation space from one side, and a male screw portion insertion opening allowing the male screw portion of the fixing bolt to be inserted into the insertion hole from one side; a fall-off prevention means for holding the fixing bolt, the head of which is received in the receiving space of the receiving chamber, without allowing the fixing bolt to fall out of the receiving chamber; Equipped with The accommodation space of the accommodation chamber is formed to be wider on the left and right sides than the head insertion opening, The falling-off prevention means is a drop-out prevention member formed of an elastic wire, the elastic wire having a substantially central portion having a substantially annular wound portion wound around the fixing bolt such that the male screw portion of the fixing bolt can be inserted therethrough but the head portion cannot be inserted therethrough, and an extension portion extending outwardly to the left and right from the wound portion, This gutter cover fixing device is characterized in that the anti-fall-off member, with the male thread portion of the fixing bolt inserted into the winding portion, is held in the storage space entered through the head insertion port by elastically deforming the left and right extension portions inward, thereby restoring the left and right extension portions to prevent them from falling off from the head insertion port.

2. The fall-off prevention member is The left and right extending portions are formed in a generally semicircular arc shape having a larger diameter than the winding portion, and are positioned on the left and right outer sides of the winding portion, respectively.

2. The gutter cover fixing device according to claim 1, characterized in that the width between at least the left and right outermost edges of the left and right extension portions is longer than the left and right width of the head insertion opening of the accommodating chamber portion.

3. 3. The gutter cover fixing device according to claim 1 or 2, characterized in that the wound portion of the anti-fall-off member is formed by winding an elastic wire once.

Images