Opening lid device

Abstract

To make it easy to manufacture lid devices for openings.SOLUTION: An embodiment of the present invention is a lid device 10 for an opening to close an opening H formed in a floor, which comprises: a lid portion 20 formed larger than the opening H; and contacting members 51a-51d provided on the underside of a lid portion 20 and capable of contacting the inner surface of the opening H. The lid portion 20 has a plurality of long lid members 21a-21g arranged in parallel. The plurality of lid members 21a-21g are arranged from one end to the other end of the lid portion 20.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an opening lid device. [Background technology]

[0002] 2. Description of the Related Art At a construction site, an opening is formed in the floor for passing a pipe or the like. For safety and protection, the opening needs to be temporarily closed until the pipe or the like is passed through. Patent document 1 discloses a cover for a floor-through round hole, which consists of a flat cover plate that is larger than the opening diameter of the floor-through round hole, and at least three legs that can be inserted and removed from the floor-through round hole. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2007-277943 A Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to make it possible to easily manufacture an opening lid device. [Means for solving the problem]

[0005] The present invention is an opening lid device for covering an opening formed in a floor, comprising a lid portion formed larger than the opening, and an abutment member provided on the underside of the lid portion and capable of abutting the inner surface of the opening, wherein the lid portion has a plurality of elongated lid members arranged in parallel. Effect of the Invention

[0006] According to the present invention, the opening lid device can be easily manufactured. [Brief description of the drawings]

[0007] [Figure 1]FIG. 1 is a perspective view of an opening lid device according to a first embodiment. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. 2 is a front view of the opening lid device when installed in the opening. [Diagram 5] FIG. 2 is a side view of the opening lid device when installed in the opening. [Figure 6A] FIG. [Figure 6B] FIG. 4 is a perspective view showing a configuration of a contact member. [Figure 7] 4A and 4B are diagrams showing the configuration around the ground member. [Figure 8] FIG. 13 is a diagram showing the opening lid device being carried; [Figure 9] FIG. 11 is a side view showing a state in which a plurality of opening lid devices are stacked. [Figure 10] FIG. 11 is a plan view of an opening lid device according to a second embodiment. [Figure 11] FIG. [Figure 12] FIG. 2 is a front view of the opening lid device when installed in the opening. [Figure 13] FIG. 2 is a side view of the opening lid device when installed in the opening. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] The opening lid device 10 according to this embodiment will be described below with reference to the drawings. For convenience, the drawings show the arrow Fr as the front side, the arrow Rr as the rear side, the arrow R as the right side, and the arrow L as the left side. The center position of the opening lid device 10 is indicated by O. (First embodiment) Fig. 1 is a perspective view of the opening lid device 10 of the first embodiment. Fig. 2 is a plan view of the opening lid device 10. Fig. 3 is a bottom view of the opening lid device 10. Fig. 4 is a front view of the opening lid device 10 as seen from the front side. Fig. 5 is a side view of the opening lid device 10 as seen from the right side.

[0009] The opening lid device 10 includes a lid portion 20 and a slippage prevention portion 50. The lid portion 20 is a portion for closing an opening H formed in a floor. The lid portion 20 is formed larger than the opening H that it is intended to close. The lid portion 20 is generally plate-shaped and generally rectangular in plan view. The lid portion 20 of this embodiment is generally square with each side measuring 700 mm to 1200 mm (approximately 900 mm in this embodiment). However, the shape of the lid portion 20 in plan view is not limited, and may be, for example, generally rectangular or generally circular, as long as it can close the opening H formed in the floor.

[0010] The lid portion 20 is made up of a plurality of members. Specifically, the lid portion 20 has lid members 21a to 21g, outer edge members 23a to 23d, an index portion 27, an upper handle portion 30, a lower handle portion 34, a ground portion 37, and a reinforcing portion 60.

[0011] FIG. 6A is an exploded perspective view of the opening lid device 10. FIG. Lid members 21a-21g are the main members that close the opening. Lid members 21a-21g are located in the center of lid portion 20. Lid members 21a-21g each have the same configuration and are arranged side by side in the left-right direction (lid members 21b-21e are omitted in FIG. 6A). Specifically, lid member 21a is located at the left end of lid portion 20, lid member 21g is located at the right end of lid portion 20, and lid members 21b-21e are located between lid members 21a and 21g.

[0012] Since the lid members 21a to 21g have the same configuration, only the lid member 21a will be described here. The lid member 21a is an elongated member that is long along the front-rear direction so as to be located from the front end to the rear end of the lid portion 20. The lid member 21a has a flat shape with a height dimension smaller than a width dimension (length in the left-right direction) when viewed from the front-rear direction. Specifically, the lid member 21a is a hollow member that is rectangular when viewed from the front-rear direction and has a through hole penetrating in the front-rear direction. The lid member 21a of this embodiment has a plurality of through holes (three in this embodiment) that penetrate in the front-rear direction at intervals in the left-right direction. The lid member 21a of this embodiment is made of, for example, an aluminum alloy, and is manufactured by forming it by extrusion molding and cutting it to a predetermined length.

[0013] The top surface of the lid member 21a is flat. A plurality of (here, two) grooves are formed in the top surface of the lid member 21a along the front-rear direction, which function as an anti-slip measure when an operator stands on the lid member 21a, prevent scratches from being noticeable when scratches are made, and improve drainage. At least the top surface of the lid member 21a is colored a first color. In the lid member 21a of this embodiment, the entire surface including the top surface is colored a first color (for example, a metallic color such as silver) by anodizing.

[0014] The outer edge members 23a to 23d are members that form the outer shape of the lid portion 20. The outer edge members 23a to 23d are located on the outer edge of the lid portion 20 and support the lid members 21a to 21g. The outer edge members 23a to 23d have the same configuration and are arranged to surround the lid members 21a to 21g. Specifically, the outer edge member 23a is located at the front end of the lid portion 20, the outer edge member 23b is located at the rear end of the lid portion 20, the outer edge member 23c is located at the left end of the lid portion 20, and the outer edge member 23d is located at the right end of the lid portion 20. Therefore, the outer edge member 23a and the outer edge member 23b face each other in the front-rear direction, and the outer edge member 23c and the outer edge member 23d face each other in the left-right direction.

[0015] Since the outer edge members 23a to 23d have the same configuration, only the outer edge member 23a will be described here. The outer edge member 23a is an elongated member that is long along the left-right direction. The outer edge member 23a has a cross section that is approximately U-shaped or C-shaped, opening toward the center position O. That is, when the outer edge member 23a is viewed along the left-right direction (longitudinal direction), the outer edge member 23a has a support portion 24 that opens toward the center position O. The support portion 24 is composed of a pair of plate portions 25u and 25d that are separated vertically (see also FIG. 7(b) described later). The pair of plate portions 25u and 25d are parallel along the left-right direction of the outer edge member 23a. The outer edge member 23a supports the cover members 21a to 21g by arranging the front ends of the cover members 21a to 21g between the plate portions 25u and 25d. The outer edge member 23a supports the cover members 21a to 21g, and the plate portion 25u is positioned so as to protrude upward from the upper surfaces of the cover members 21a to 21g. The plate thickness of the plate portion 25u is in the range of 1.0 mm to 6.0 mm, and is approximately 4.0 mm in this embodiment. Therefore, the outer edge member 23a protrudes from the upper surface of the cover member 21a to 21g by 1.0 mm to 6.0 mm. The outer edge member 23a also has a chamfered portion 26 in the left-right direction at the upper end of the outer edge. The chamfered portion 26 is a flat inclined surface, but may be a curved surface. The left and right ends of the outer edge member 23a are formed obliquely so that the left outer edge member 23c and the right outer edge member 23d can be butted against each other at right angles. The outer edge member 23a in this embodiment is made of, for example, an aluminum alloy, and is formed by extrusion molding, cut to a predetermined length, and processed at both ends.

[0016] The upper surface of the outer edge member 23a is a flat surface. At least the upper surface of the outer edge member 23a is colored with a second color. In the outer edge member 23a of this embodiment, the entire surface including the upper surface is colored with the second color (for example, a warm color such as red, yellow, or orange) by anodizing. Outer edge member 23b supports lid members 21a-21g by disposing the rear ends of lid members 21a-21g between plate portions 25u and 25d of outer edge member 23b. Furthermore, outer edge member 23c supports lid member 21a by disposing the left end of lid member 21a between plate portions 25u and 25d of outer edge member 23c. Furthermore, outer edge member 23d supports lid member 21g by disposing the right end of lid member 21g between plate portions 25u and 25d of outer edge member 23d.

[0017] The outer edge members 23a-23d can be fixed to the cover members 21a-21g using fixing means such as rivets (including blind rivets), screws, welding, etc. In this embodiment, the outer edge members 23a-23d and the cover members 21a-21g are each formed with a hole that communicates in the vertical direction, and the outer edge members 23a-23d and the cover members 21a-21g can be fixed to each other by inserting a blind rivet into the communicating hole and fastening it.

[0018] The indicator portion 27 is a mark for allowing an operator to recognize that the opening lid device 10 is covering the opening H. The indicator portion 27 is provided on the upper surface side of the lid portion 20, here on the upper surfaces of the lid members 21a to 21g. The indicator portion 27 is cross-shaped (an "x" mark) in a plan view. Specifically, the indicator portion 27 is shaped to extend radially from the center position O of the opening lid device 10 to each of the four corners of the lid portion 20. The indicator portion 27 in this embodiment is composed of indicator members 28a to 28d.

[0019] The indicator members 28a to 28d are located on the upper surfaces of the lid members 21a to 21g. The indicator members 28a to 28d have the same configuration and are arranged at equal angular intervals (90°) from the center position O of the lid portion 20. Specifically, the indicator member 28a is located between the center position O of the lid portion 20 and the corner of the left front end, the indicator member 28b is located between the center position O of the lid portion 20 and the corner of the right front end, the indicator member 28c is located between the center position O of the lid portion 20 and the corner of the right rear end, and the indicator member 28d is located between the center position O of the lid portion 20 and the corner of the left rear end.

[0020] The indicator members 28a to 28d each have the same configuration, and here, only the indicator member 28a will be described. The indicator member 28a is an elongated member that is long along a diagonal direction that intersects both the left-right direction and the front-rear direction. The indicator member 28a is an approximately plate-shaped member. The plate thickness of the indicator member 28a is approximately the same as the plate thickness of the outer edge member 23a described above. One end of the indicator member 28a, which is on the center position O side, is formed in a tapered shape so that the indicator members 28a to 28d can be butted against each other. In addition, the other end of the indicator member 28a is formed in a tapered shape so that the indicator members 28a to 28d can be butted against each other. As shown in FIG. 2, the width Wi of the indicator members 28a to 28d is approximately the same as the width Wo of the outer edge members 23a to 23d. The indicator member 28a of this embodiment is made of, for example, an aluminum alloy, and is formed by processing a metal plate by cutting or the like.

[0021] The upper and lower surfaces of the indicator member 28a are flat surfaces. At least the upper surface of the indicator member 28a is colored a second color. In the present embodiment, the entire surface of the indicator member 28a, including the upper surface, is colored a second color (for example, a warm color such as red, yellow, or orange) by anodizing. In this embodiment, the upper surfaces of the indicator members 28a to 28d and the upper surfaces of the outer edge members 23a to 23d are substantially the same color. The indicator members 28a to 28d can be fixed to the upper surfaces of the lid members 21a to 21g using fixing means such as rivets (including blind rivets), screws, welding, etc. By fixing the indicator members 28a to 28d to the upper surfaces of the lid members 21a to 21g, the indicator members 28a to 28d are positioned so as to protrude upward from the upper surfaces of the lid members 21a to 21g. The plate thickness of the indicator member 28a is in the range of 1.0 mm to 6.0 mm, and is approximately 4.0 mm in this embodiment. Therefore, the indicator member 28a protrudes in the range of 1.0 mm to 6.0 mm from the upper surfaces of the lid members 21a to 21g. In this embodiment, the indicator members 28a to 28d and the lid members 21a to 21g are each formed with a hole communicating in the vertical direction, and the indicator members 28a to 28d and the lid members 21a to 21g can be fixed to each other by inserting a blind rivet into the communicating hole and fastening it.

[0022] The upper handle portion 30 is a portion for an operator to grasp with his / her hand when lifting the opening cover device 10 installed in the opening H. The upper handle portion 30 is located on the upper surface side of the cover portion 20 at the right end. The upper handle portion 30 has an attachment portion 31 and a handle 32. The attachment portion 31 is fixed to the upper surface of the cover member 21g, so that the upper handle portion 30 is attached to the cover member 21g. Usually, the handle 32 of the upper handle portion 30 is arranged so as to overlap with the upper surface of the outer edge member 23d or the upper surface of the cover member 21g by its own weight, and when the operator lifts it, it can be rotated around the base end of the handle 32 to be in an upright state. The handle 32 of the upper handle portion 30 can be rotated around a rotation axis along the front-rear direction. The handle 32 is an annular member that is easy to grasp with the hand, and opens so as to penetrate in the left-right direction when the handle 32 is upright.

[0023] The lower handle portion 34 is a portion that an operator grasps with his / her hand when carrying the opening lid device 10. The lower handle portion 34 is located at the center of the underside of the lid portion 20. The lower handle portion 34 has an attachment portion 35 and a handle 36. The lower handle portion 34 can be attached to the lid member 21d by fixing the attachment portion 35 to the underside of the lid member 21d. The handle 36 is rotatable about a rotation axis along the front-rear direction. The handle 36 is an annular member that is easy to grasp with the hand, and opens so as to penetrate in the left-right direction when the handle 36 hangs down.

[0024] The grounding portion 37 is a portion that comes into contact with the floor surface around the opening H when the opening lid device 10 is installed on the opening H. The grounding portion 37 is located on the lower surface side of the lid portion 20, here, on the lower surfaces of the lid members 21a to 21g. The grounding portion 37 in this embodiment has grounding members 38a to 38d.

[0025] Ground members 38a to 38d each have the same configuration, and are disposed at four corners of the underside of lid portion 20. Specifically, ground member 38a is located at a corner of the left front end of the underside of lid portion 20, ground member 38b is located at a corner of the right front end of the underside of lid portion 20, ground member 38c is located at a corner of the right rear end of the underside of lid portion 20, and ground member 38d is located at a corner of the left rear end of the underside of lid portion 20.

[0026] The ground members 38a to 38d each have the same configuration, and here, the ground member 38a will be described. The grounding member 38a is a substantially plate-shaped member. The grounding member 38a is a substantially L-shaped member when viewed from the bottom. When viewed from the bottom, the grounding member 38a is symmetrical with respect to a line (dotted line Ld) connecting the center position O and the corner at the front left end. The grounding member 38a has a plurality of protrusions 39A, 39B on the lower surface that contacts the floor surface.

[0027] FIG. 7(a) is a bottom view showing the configuration of ground member 38a, FIG. 7(b) is a cross-sectional view taken along line II in FIG. 7(a), and FIG. 7(c) is a cross-sectional view of ground member 38a. As shown in FIG. 7(a), the protrusion 39A of the ground contact member 38a is formed in the front-rear direction from a line (dotted line Ld) connecting the center position O and the left front end corner to the rear end of the ground contact member 38a in a bottom view. On the other hand, the protrusion 39B of the ground contact member 38a is formed in the left-right direction from a line (dotted line Ld) connecting the center position O and the left front end corner to the right end of the ground contact member 38a in a bottom view. In this way, the ground contact member 38a has a plurality of protrusions 39A and 39B formed in two different directions. By forming a gap between the adjacent protrusions 39A and between the adjacent protrusions 39B, the gap engages with the unevenness of the floor surface, thereby improving the grip between the ground contact member 38a and the floor surface.

[0028] 7(b) and (c), the protrusion 39A protrudes from a reference surface 40 of the grounding member 38a toward the floor surface. The protrusion 39A is formed to protrude obliquely outward (leftward) from the reference surface 40 toward the floor surface. The reference surface 40 is an imaginary surface parallel to a bottom surface 41. The bottom surface 41 is a surface where the lower tips of adjacent protrusions 39A are joined together. The outer side surface (left side surface) 42a and the inner side surface (right side surface) 42b of the protrusion 39A are substantially parallel to each other. Here, the angle between the outer side surface 42a of the protrusion 39A and the bottom surface 41 is defined as angle α, and the angle between the inner side surface 42b of the protrusion 39A and the bottom surface 41 is defined as angle β. At this time, the protrusion 39A is formed so that the angle α is larger than the angle β. Therefore, in a state where the grounding member 38a is in contact with the floor surface, when vibration occurs in the opening lid device 10, the protrusion 39A tries to move to the right due to the reaction force received from the floor surface. On the other hand, the protrusion 39B has a shape symmetrical to the protrusion 39A with respect to the dashed line Ld. Therefore, in a state where the grounding member 38a is in contact with the floor surface, when vibration occurs in the opening lid device 10, the protrusion 39B tries to move to the rear due to the reaction force received from the floor surface. In this way, the ground member 38a has the protrusions 39A and 39B formed in different directions, so that when vibration occurs in the opening lid device 10, the ground member 38a tries to move toward the center position O of the opening lid device 10, i.e., the center of the opening H. Since the ground members 38a to 38d are arranged at the four corners of the lower surface of the lid part 20, in a state where the ground members 38a to 38d are in contact with the floor surface, when vibration occurs in the opening lid device 10, each of the ground members 38a to 38d tries to move toward the center of the opening H, so that the opening lid device 10 can be prevented from shifting or rotating from the center of the opening H.

[0029] Grooves 43 are formed on the lower surface of the protruding portion 39A and the lower surface of the protruding portion 39B. The grooves 43 can make the protruding portions 39A and 39B easily deformable, thereby improving the grip between the ground contact member 38a and the floor surface. Even if there is liquid such as water on the floor surface, the liquid is drained through the grooves 43, so that water can be drained well. The grooves 43 can also reduce the material cost of the ground contact member 38a. The ground contact member 38a of this embodiment is made of, for example, rubber, and is formed by injection molding.

[0030] The ground members 38a-38d can be fixed to the lower surfaces of the cover members 21a-21g using fixing means such as rivets (including blind rivets), screws, welding, etc. By fixing the ground members 38a-38d to the lower surfaces of the cover members 21a-21g, the ground members 38a-38d are positioned so as to protrude downward from the lower surfaces of the cover members 21a-21g. ​​In this embodiment, holes communicating in the vertical direction are formed in the ground members 38a-38d and the cover members 21a, 21g, respectively, and the ground members 38a-38d can be fixed to the cover members 21a, 21g by inserting blind rivets into the communicating holes and fastening them.

[0031] The reinforcing portion 60 is a portion that reinforces the lid portion 20. The reinforcing portion 60 is located on the lower surface side of the lid portion 20, here, on the lower surfaces of the lid members 21b to 21f. The reinforcing portion 60 has reinforcing members 61a and 61b.

[0032] The reinforcing members 61a and 61b have the same configuration and are arranged on the underside of the lid portion 20 at a distance from each other in the front and rear directions with respect to the center position O of the lid portion 20. Specifically, the reinforcing member 61a is located between the center position O of the lid portion 20 and the front end portion, and the reinforcing member 61b is located between the center position O of the lid portion 20 and the rear end portion.

[0033] Since the reinforcing members 61a and 61b have the same configuration, only the reinforcing member 61a will be described here. The reinforcing member 61a is an elongated member that is long along the left-right direction that is a direction perpendicular to the longitudinal direction of the cover members 21a-21g and is disposed across the cover members 21b-21f. Specifically, the reinforcing member 61a has a substantially U-shaped cross section that opens downward. The reinforcing member 61a in this embodiment is made of, for example, an aluminum alloy and is formed by extrusion molding.

[0034] The reinforcing members 61a, 61b can be fixed to the undersides of the lid members 21b to 21f using fixing means such as rivets (including blind rivets), screws, welding, etc. By fixing the reinforcing members 61a, 61b to the undersides of the lid members 21b to 21f, the reinforcing members 61a, 61b are positioned so as to protrude downward from the undersides of the lid members 21a to 21g. In this embodiment, the reinforcing members 61a, 61b and the lid members 21b to 21f are each formed with a hole communicating in the vertical direction, and the reinforcing members 61a, 61b and the lid members 21b to 21f can be fixed to each other by inserting a blind rivet into the communicating hole and fastening it.

[0035] The anti-slip portion 50 is located inside the opening H when the opening lid device 10 is installed in the opening H. The anti-slip portion 50 can come into contact with the inner surface of the opening H when the opening lid device 10 slides horizontally relative to the opening H (when it tries to slip), and by coming into contact with the inner surface, it suppresses slippage of the opening lid device 10. The anti-slip portion 50 is provided on the underside of the lid portion 20.

[0036] The anti-slip portion 50 is made up of a plurality of members. Specifically, the displacement prevention portion 50 has contact members 51a to 51d. The contact members 51a to 51d are disposed at a distance in the front / rear and left / right directions from the center position O of the lid portion 20. Specifically, the contact member 51a is located between the center position O of the lid portion 20 and the front end, the contact member 51b is located between the center position O of the lid portion 20 and the rear end, the contact member 51c is located between the center position O of the lid portion 20 and the left end, and the contact member 51d is located between the center position O of the lid portion 20 and the right end.

[0037] Since the contact members 51a to 51d have the same configuration, only the contact member 51a will be described here. FIG. 6B is a perspective view showing the configuration of the contact member 51a. The abutting member 51a is a member having a substantially block shape or a substantially rectangular parallelepiped shape. Specifically, the abutting member 51a has a substantially P-shaped cross section with a through hole penetrating along the left-right direction. The abutting member 51a has a main body portion 52 and an attachment portion 54. The main body portion 52 has an outer portion 53a located on the front side, an inner portion 53b located on the rear side, a top portion 53c located at the upper end, and a bottom portion 53d located at the lower end. The outer portion 53a, the inner portion 53b, the top portion 53c, and the bottom portion 53d are each formed in a substantially plate shape. When the opening cover device 10 slides forward, the outer portion 53a of the abutting member 51a abuts against the inner surface of the opening H, thereby suppressing the opening cover device 10 from shifting forward. The attachment portion 54 is substantially plate-shaped and is formed integrally with the top portion 53c of the main body portion 52. The abutting member 51a of this embodiment is made of, for example, an aluminum alloy and is formed by extrusion molding.

[0038] The abutment members 51a-51d can be fixed to the lower surfaces of the cover members 21a-21g using fixing means such as rivets (including blind rivets), screws, welding, etc. By fixing the abutment members 51a-51d to the lower surfaces of the cover members 21a-21g, the abutment members 51a-51d are positioned so as to protrude downward from the lower surfaces of the cover members 21a-21g. ​​In this embodiment, the mounting parts 54 of the abutment members 51a-51d and the cover members 21b, 21d, 21f are each formed with a hole communicating in the vertical direction, and the abutment members 51a-51d can be fixed to the cover members 21b, 21d, 21f by inserting a blind rivet into the communicating hole and fastening it.

[0039] Further, a protective member 55 is attached to the lower end of each of the abutting members 51a to 51d. When a plurality of opening lid devices 10 are stacked vertically, the protective member 55 protects the upper surface of the lid portion 20 of the opening lid device 10 located in the lower tier from being damaged by the abutting members 51a to 51d of the opening lid device 10 located in the upper tier. The protective member 55 in this embodiment is made of rubber, for example, and is formed by injection molding.

[0040] When an operator installs the opening lid device 10 configured as described above on the opening H, the opening lid device 10 is installed on the opening H with the lid portion 20 on the upper side and the slippage prevention portion 50 on the lower side. By installing the opening lid device 10 on the opening H, the lower surfaces of the grounding members 38a to 38d of the lid portion 20 are in contact with the floor surface around the opening H. Also, the slippage prevention portion 50 is positioned inside the opening H. Also, the lower handle portion 34 is in a state in which the handle 36 hangs down due to its own weight.

[0041] When the opening lid device 10 is installed on the opening H, a cross-shaped indicator 27 is provided on the upper surface of the lid portion 20, which allows the worker to understand at a glance that the opening H is being closed. Therefore, it is possible to prevent the worker from moving the opening lid device 10 without permission. In addition, since the worker can be made aware of the opening lid device 10, the worker can pass by or work in a way that avoids the opening lid device 10.

[0042] Furthermore, even if an external force is applied to the opening lid device 10 and the opening lid device 10 slides relative to the opening H, the anti-slip portion 50 is positioned inside the opening H, thereby preventing the opening lid device 10 from slipping relative to the opening H.

[0043] When the opening lid device 10 slides forward relative to the opening H, the main body 52 of the abutment member 51a abuts against the inner surface Ha of the opening H, thereby preventing the opening lid device 10 from shifting (see FIG. 5). When the opening lid device 10 slides rearward relative to the opening H, the main body 52 of the abutment member 51b abuts against the inner surface Hb of the opening H, thereby preventing the opening lid device 10 from shifting (see FIG. 5). When the opening lid device 10 slides leftward relative to the opening H, the main body 52 of the abutment member 51c abuts against the inner surface Hc of the opening H, thereby preventing the opening lid device 10 from shifting (see FIG. 4). When the opening lid device 10 slides to the right relative to the opening H, the main body 52 of the abutment member 51d abuts against the inner surface Hd of the opening H, thereby preventing the opening lid device 10 from shifting (see FIG. 4).

[0044] When the opening lid device 10 slides diagonally forward and to the left relative to the opening H, the main body portion 52 of the abutment member 51a abuts against the inner surface Ha of the opening H, and the main body portion 52 of the abutment member 51c abuts against the inner surface Hc of the opening H, thereby preventing the opening lid device 10 from shifting. When the opening lid device 10 slides diagonally forward and to the right relative to the opening H, the main body portion 52 of the abutment member 51a abuts against the inner surface Ha of the opening H, and the main body portion 52 of the abutment member 51d abuts against the inner surface Hd of the opening H, thereby preventing the opening lid device 10 from shifting. When the opening lid device 10 slides diagonally backward and to the left relative to the opening H, the main body portion 52 of the abutment member 51b abuts against the inner surface Hb of the opening H, and the main body portion 52 of the abutment member 51c abuts against the inner surface Hc of the opening H, thereby preventing the opening lid device 10 from shifting. When the opening lid device 10 slides diagonally backward and to the right relative to the opening H, the main body portion 52 of the abutment member 51b abuts against the inner surface Hb of the opening H, and the main body portion 52 of the abutment member 51d abuts against the inner surface Hd of the opening H, thereby preventing the opening lid device 10 from shifting.

[0045] On the other hand, when an operator removes the opening lid device 10 installed in the opening H, the operator can remove the opening lid device 10 from the opening H by grasping and lifting the handle 32 of the upper handle part 30 with one hand. When the operator grasps and lifts the handle 32 of the upper handle part 30 with one hand, a gap is generated between the opening lid device 10 and the floor surface, so the operator can insert the other hand through the gap to grasp the handle 36 of the lower handle part 34 in a hanging state. At this time, since the handle 32 of the upper handle part 30 and the handle 36 of the lower handle part 34 are both opened so as to penetrate in the left-right direction, when one hand accesses the handle 32 from one side in the left-right direction, the other hand can easily access the handle 36 from the other side in the left-right direction, and the operator can immediately move on to the action of carrying the device.

[0046] In addition, the lid portion 20 of the opening lid device 10 has a lower handle portion 34, so that an operator can easily carry the opening lid device 10. 8 is a diagram showing a state in which an operator is carrying the opening lid device 10. The operator can carry the opening lid device 10 with one hand by holding the handle 36 of the lower handle portion 34 with the hand while the opening lid device 10 is in an upright position. In addition, since the lower handle portion 34 is located in the center of the lid portion 20, it is possible to prevent the outer edge members 23a to 23d from coming into contact with the floor surface even when the opening lid device 10 is in an upright position.

[0047] Furthermore, when the opening lid device 10 is not in use, a plurality of opening lid devices 10 can be stacked for storage. FIG. 9 is a side view showing a state where a plurality of opening lid devices 10 are stacked. As shown in FIG. 9, when an upper opening lid device 10 is stacked on a lower opening lid device 10, the main body 52 of each of the abutting members 51a to 51d of the upper opening lid device 10 is placed on the upper surface of the lid part 20 of the lower opening lid device 10. Therefore, the opening lid devices 10 can be stacked in a stable state. Since a protective member 55 is attached to the lower end of the abutting members 51a to 51d, the protective member 55 can protect the upper surface of the lid part 20 of the opening lid device 10 located in the lower stage from being damaged by the abutting member 51a of the upper opening lid device 10.

[0048] As described above, according to this embodiment, the lid portion 20 has a plurality of elongated lid members 21a-21g arranged in parallel. When the large lid portion 20 that covers the opening H is made of a single lid member, a manufacturing device such as a large mold is required. However, by making the lid portion 20 of a plurality of elongated lid members 21a-21g arranged in parallel as in this embodiment, the opening lid device 10 can be easily manufactured. In addition, by changing the length and number of the lid members, opening lid devices of different sizes and shapes can be easily manufactured.

[0049] Furthermore, according to this embodiment, the lid portion 20 has a cross-shaped indicator portion 27 on the upper surface thereof, which allows the worker to understand at a glance that the opening cover device 10 is covering the opening H. Note that the indicator portion 27 is not limited to being cross-shaped, and may be text such as "Opening present" or a symbol such as "!" (exclamation mark).

[0050] According to this embodiment, the indicator portion 27 has a plurality of generally plate-shaped indicator members 28a-28d arranged on the upper surfaces of the cover members 21a-21g, so that the indicator portion 27 can be configured three-dimensionally. The indicator members 28a-28g are colored in a color different from that of the cover members 21a-21g, so that the visibility of the indicator portion 27 can be improved. Note that the indicator portion 27 is not limited to having the indicator members 28a-28d, and may be configured by painting or by attaching a colored sticker.

[0051] Second Embodiment Fig. 10 is a plan view of the opening lid device 110 of the second embodiment. Fig. 11 is a bottom view of the opening lid device 110. Fig. 12 is a front view of the opening lid device 110 seen from the front side. Fig. 13 is a side view of the opening lid device 110 seen from the right side. Note that members that function in the same way as in the first embodiment are given the same symbols or names and descriptions will be omitted as appropriate.

[0052] The opening lid device 110 includes a lid portion 120 and a displacement prevention portion 150. The lid part 120 is a substantially rectangular shape with a long side:short side ratio of 1.6 to 2.5: 1. The lid part 120 in this embodiment has a long side of 1600 mm to 2000 mm (about 1800 mm here) and a short side of 800 mm to 1000 mm (about 900 mm here).

[0053] The lid portion 120 has lid members 121a to 121o, outer edge members 123a to 126d, indicator portions 127A, 127B, upper handle portions 30A, 30B, a lower handle portion 34, a ground portion 37, and a reinforcing portion 160.

[0054] Lid members 121a-121o have the same configuration as lid members 21a-21g in the first embodiment and are arranged in parallel in the left-right direction. To accommodate lid section 120 which is long in the left-right direction, the number of lid members is increased compared to lid section 20 in the first embodiment. Lid members 121a-121o are colored a first color (for example, a metallic color such as silver) on the entire surfaces including the upper surfaces by anodizing.

[0055] The outer edge members 123a to 123d have the same configuration as the outer edge members 23a to 23d of the first embodiment. To correspond to the lid portion 120 which is long in the left-right direction, the outer edge members 123a and 123b are long and the outer edge members 123c and 123d are short. The outer edge members 123a to 123d are colored in a second color (for example, a warm color such as red, yellow, or orange) on the entire surfaces including the upper surfaces by anodizing.

[0056] The indicators 127A and 127B have the same configuration as the indicator 27 of the first embodiment. The indicators 127A and 127B are cross-shaped (marked with "x") in a plan view, and are positioned apart from each other on the left and right. The indicator 127A is shaped to extend radially from a point OA, and the indicator 127B is shaped to extend radially from a point OB. The indicator members 28a to 28d are colored with a second color (e.g., a warm color such as red, yellow, or orange) on the entire surface including the upper surface by anodizing. In this embodiment, the upper surfaces of the indicator members 28a to 28d and the upper surfaces of the outer edge members 123a to 123d are substantially the same color. The number of indicators may be one as in the first embodiment. In this case, the indicators can be shaped to extend radially from the center position O of the opening cover device 110 to the four corners of the cover portion 120.

[0057] Each of the upper handle parts 30A and 30B has a similar configuration to the upper handle part 30 of the first embodiment. The upper handle parts 30A and 30B are located on the upper surface side of the cover part 20, at the rear end part, separated from each other on the left and right. The handles 32 of the upper handle parts 30A and 30B are rotatable about a rotation axis along the left-right direction. The lower handle portion 34 has the same configuration as in the first embodiment. The handle 36 of the lower handle portion 34 is rotatable about a rotation axis along the left-right direction. There may be two or more lower handle portions 34. In this case, the two or more lower handle portions 34 can be arranged on the underside of the lid portion 120, at the center in the front-rear direction, separated left and right.

[0058] Grounding portion 37 has the same configuration as in the first embodiment. Grounding portion 37 is located on the lower surface side of lid portion 120, here on the lower surfaces of lid members 121a and 121o. Grounding portion 37 has grounding members 38a to 38d.

[0059] The reinforcing section 160 has reinforcing members 161a to 161d. The reinforcing members 161a to 161d have the same configuration as the reinforcing members 61a and 61b of the first embodiment, respectively. The reinforcing members 161a and 161b and the reinforcing members 161c and 161d are arranged on the underside of the lid portion 120, separated from each other in the front-rear direction with the center position O of the lid portion 120 in between. In order to accommodate the lid portion 120 that is long in the left-right direction, the reinforcing members 161a to 161d are configured to be longer than the reinforcing members 61a and 61b of the first embodiment.

[0060] The displacement prevention part 150 has contact members 151a to 151h. The contact members 151a to 151h have the same configuration as the contact members 51a to 51d of the first embodiment. In order to accommodate the lid part 120 that is long in the left-right direction, a plurality of (three in this example) contact members 151a to 151c and 151d to 151f are arranged on the front and rear sides, respectively, spaced apart from each other on the left and right.

[0061] As described above, according to this embodiment, the lid section 120 has a plurality of elongated lid members 121a-121o arranged in parallel, which makes it possible to easily manufacture the opening lid device 110. Also, by changing the length and number of the lid members, opening lid devices of different sizes and shapes can be easily manufactured.

[0062] The present invention has been described above using the above-mentioned embodiments. However, the present invention is not limited to the above-mentioned embodiments, and modifications and the like are possible within the scope of the present invention. Part of an embodiment can be replaced with part of another embodiment, or can be combined with another embodiment.

[0063] In the above embodiment, the lid portion 20, 120 has a total of seven lid members 21a-21g and a total of 15 lid members 121a-121o, but this is not limited to the above. The lid portion 20, 120 may have 2 to 6 lid members, 8 to 14 lid members, or 16 or more lid members. The lid portion 20, 120 may have only one lid member.

[0064] In the above-described embodiment, the indicator portion 27, 127A, 127B is configured by a plurality of indicator members 28a to 28d, but this is not limited to the above. For example, the indicator members 28a to 28d may be configured as a single unit, or the indicator members 28a and 28c may be configured as a single unit along a straight line, and the indicator members 28b and 28d may be configured as separate units.

[0065] In the above-mentioned embodiment, the slippage prevention unit 50, 150 has four contact members 51a-51d and eight contact members 151a-151h, but the present invention is not limited to this. For example, any adjacent contact members among the multiple contact members may be integrally formed, or the four contact members 51a-51d may be integrally formed, or the eight contact members 151a-151h may be integrally formed. Furthermore, the slippage prevention unit 50, 150 may have two to three, five to seven, or nine or more contact members. [Explanation of symbols]

[0066] 10, 110: opening cover device 20, 120: cover portion 21a-21g, 121a-121o: cover member 23a-23d, 123a-123d: outer edge member 27, 127A, 127B: index portion 28a-28d: index member 38a-38d: ground member 39A, 39B: protrusion 50, 150: slippage prevention portion 51a-51d, 151a-151h: abutment member H: opening

Claims

1. An opening cover device for closing an opening formed in a floor, A lid portion formed larger than the opening; a contact member provided on the underside of the lid portion and capable of contacting an inner surface of the opening, The lid portion is An opening lid device comprising a plurality of elongated lid members arranged in parallel.

2. The plurality of cover members include 2. The opening lid device according to claim 1, wherein the opening lid device is disposed from one end of the lid portion to the other end opposite the one end.

3. The lid portion is A first outer edge member is located at the one end and a second outer edge member is located at the other end, The plurality of cover members include 3. The opening lid device according to claim 2, wherein the opening lid device is fixed to the first outer edge member and the second outer edge member.

4. The lid portion is 3. The opening cover device according to claim 1, further comprising a cross-shaped indicator on an upper surface thereof.

5. The indicator portion is a plurality of substantially plate-shaped indicator members disposed on an upper surface of the lid member; The plurality of indicator members include 5. The opening lid device according to claim 4, wherein the plurality of lid members are colored differently from one another.

6. The lid portion is A plurality of elongated outer edge members are provided at the outer edge of the lid portion, The outer edge member is 6. The opening lid device according to claim 5, wherein the opening lid device is colored substantially the same color as the indicator member.

7. The lid portion is a plurality of grounding members that are grounded on a floor surface around the opening; The ground member is 3. The opening lid device according to claim 1, further comprising protrusions formed along two different directions when viewed from the bottom.

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