JP3038985U - Open / close lid device - Google Patents

Abstract

(57) Abstract: A lid mounting step portion having a lid receiving portion and an upright portion standing upright from the lid receiving portion is provided in a peripheral edge portion of an opening of the installation surface so as to be recessed from the installation surface. (EN) In an opening / closing lid device having an opening / closing lid placed thereon, a simple hinge structure allows the opening / closing operation of the lid to be easily performed by a small number of people, and further, the dropping of the lid during the opening / closing operation can be avoided. SOLUTION: Between the linear one side edge portion 5 of the opening / closing lid T and the standing portion 2b of the lid mounting step portion 2, there is a width direction both side portion 6s ₁ , between the one side edge portion 5 and the standing portion 2b. 6s ₂ are connected via strip-shaped flexible sheets S joined to each other, and the widthwise intermediate portion 6m of the sheet S constitutes a pivotal fulcrum of the opening / closing lid T. When placed on the lid receiving portion 2a, the transverse cross section has an inverted U shape, and the arc-shaped top portion 6mr is substantially flush with the opening / closing lid T and the installation surface F.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an opening / closing lid device that opens and closes an opening provided on a walkable installation surface (for example, an indoor floor surface or an outdoor ground surface).

[0002]

[Prior art]

 On the installation surface (for example, indoor floor surface or outdoor ground surface), grooves or recesses for electric wire storage or water supply / drainage, septic tanks, etc. may be recessed, and these openings are usually inspected. Used as a mouth or maintenance mouth. In this case, a lid mounting step portion having a lid receiving portion and an upright portion standing upright from the lid receiving portion is provided at the peripheral edge portion of the opening so as to be recessed from the installation surface, and the lid receiving step portion of the lid mounting step portion is provided. An opening / closing lid is placed on the part so that the upper surface of the lid is substantially flush with the installation surface.

Further, among the above-mentioned opening / closing lids, a relatively lightweight one that can be opened / closed manually is used for opening / closing operations, and the entire lid is lifted by a handle provided on the lid to move (carry) in the horizontal direction, or As shown in FIG. 3, one end of the lid is made rotatable by using a hinge A so that the lid can be opened and closed.

[0004]

[Problems to be solved by the device]

 However, the type that lifts the entire lid to move (carry) it horizontally when opening and closing the lid as described above inevitably requires a plurality of people, and the workability is bad. There is also a risk of dropping the lid.

On the other hand, in the type in which the lid is opened / closed and rotated by using the hinge, there is no fear of the lid dropping, but a part of the hinge protrudes or the hinge is provided on the outer surface of the peripheral portion of the lid. There is a risk that sand dust may enter the gap between the lid mounting step (upright portion) and cause clogging, which may interfere with the opening and closing of the lid.

In order to avoid the above problems, for example, as shown in FIG. 4, a link-type metal hinge mechanism B is used that connects the back surface of the lid and the inside of the groove to rotatably support the lid. Some of them have been proposed, but this one has other problems such that the hinge mechanism may project into the groove, and the structure of the hinge mechanism itself is complicated and the cost increases.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide an opening / closing lid device that can solve the above problems of the conventional structure all at once.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the invention of claim 1 is a lid mounting step having a lid receiving portion and an upright portion standing upright from the lid receiving portion at a peripheral portion of an opening formed in a walkable installation surface. In the opening / closing lid device, the opening / closing lid that is recessed from the installation surface and that closes the opening is placed on the lid receiving portion so that the upper surface of the lid is substantially flush with the installation surface. The linear one side edge portion of the lid and the standing portion facing the straight side edge portion are connected to each other via a belt-shaped flexible sheet having widthwise both side portions joined to the one side edge portion and the standing portion. Then, the widthwise intermediate portion of the sheet constitutes a pivot fulcrum of the opening / closing lid, and the sheet has an inverted U-shaped cross section in a state where the opening / closing lid is placed on the lid receiving portion. Also, the arc-shaped top portion is substantially flush with the opening / closing lid and the installation surface, and the consideration of claim 2. In addition to the above characteristics, a first pressing plate is superposed and fixed on a surface of the one side edge portion facing the upright portion with one side portion of the sheet interposed therebetween. A second holding plate is superposed and fixed to the surface facing the side edge portion while sandwiching the other side portion of the sheet, and the two holding plates are directly opposed to each other with the opening / closing lid placed on the lid receiving portion. The invention of claim 3 is characterized in that, in addition to the above respective features, the lid mounting step portion is constituted by an edge frame member having at least the lid receiving portion and a rising portion. The frame material is fixed to the peripheral portion of the opening.

[0009]

[Embodiment of the invention]

 Embodiments of the present invention will be specifically described below based on embodiments of the present invention illustrated in the accompanying drawings.

1 is an overall plan view of an opening / closing lid device according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG.

A floor surface F, which is an installation surface that can be walked indoors, is formed of concrete or the like, and a rectangular pit P for storing wiring is recessed in the floor surface F. At the peripheral portion of the opening 1 of the pit P, a lid mounting step portion 2 for supporting an opening / closing lid T that closes the opening 1 is provided so as to be recessed from the floor surface F and to extend over the entire circumference.

The lid mounting step portion 2 has a horizontal lid receiving portion 2a extending linearly along the peripheral edge of the opening 1, and a vertical standing from an outer end of the lid receiving portion 2a so that an upper end thereof is a floor surface F. And an upright portion 2b connected to each other. When the opening / closing lid T is placed on the lid receiving portion 2a, the upper surface of the lid T is substantially flush with the floor surface F, that is, at the same level. It is possible to walk.

In the illustrated example, the lid mounting step portion 2 is composed of a metal frame member C having at least the lid receiving portion 2 a and the upright portion 2 b and fixed to the peripheral portion of the opening 1. The cushion sheet 4 is covered and fixed on the upper surface of the horizontal frame portion 3 of the edge frame material C, which constitutes the lid receiving portion 2a. Incidentally, such a cushion sheet may be omitted, and the lid T may be placed directly on the upper surface of the horizontal frame portion 3 formed in the flat.

Between the linear one side edge portion 5 of the opening / closing lid T and the upright portion 2b of the lid mounting step portion 2 facing the vertical outer end surface of the one side edge portion 5, there is a space therebetween. In order to make a hinge connection with each other, a strip-shaped flexible sheet S in which both widthwise side portions 6s ₁ and 6s ₂ are joined to the one side edge portion 5 and the standing portion 2b is interposed, and the width of the sheet S A pivot fulcrum of the opening / closing lid T is constituted by the direction intermediate portion 6m. As the sheet S, a material such as a synthetic resin material (for example, a vinyl chloride material or a foamed polyurethane material) or rubber having a strength that can serve as a fulcrum of rotation and having flexibility is used.

On a surface (the vertical outer end surface) of the one side edge portion 5 of the opening / closing lid T facing the upright portion 2b, a first strip-shaped plate extending along the one side edge portion 5 is formed. A holding plate 7 ₁ is superposed and fixed by sandwiching the one side portion 6s ₁ of the sheet S, and a strip plate along the one side edge portion 5 is also formed on the surface of the rising portion 2b facing the one side edge portion 5. The second pressing plate 7 ₂ formed in the shape of a sheet is superposed and fixed by sandwiching the other side portion 6s ₂ of the sheet S. The two holding plates 7 ₁ and 7 ₂ are in direct contact with each other with the opening / closing lid T placed on the lid receiving portion 2a (solid line position in FIG. 2).

To fix the first pressing plate 7 ₁ , the first pressing plate 7 ₁ is penetrated through the plate 7 ₁ , the one side portion 6 s _{1 of} the sheet and the one side edge portion 5 of the lid T, which are arranged at intervals in the longitudinal direction of the sheet S. A plurality of rivets 8 are used for fixing the second pressing plate 7 ₂ , and the second pressing plate 7 ₂ is fixed at intervals in the longitudinal direction of the sheet S. The plate 7 ₂ , the other side portion 6s _{2 of} the sheet and the rising portion 2b are used. Although a plurality of screws 9 penetrating through are used, other suitable fixing means (for example, adhesive means) may be used instead of the fixing means.

The sheet S has an inverted U-shaped cross section when the opening / closing lid T is placed on the lid receiving portion 2a as shown by the solid line in FIG. The opening / closing lid T and the floor surface F are substantially flush with each other, that is, at the same level.

Furthermore, on the upper surface of the opening / closing lid T, a handle 10 is provided which is offset to the other side edge side. The handle 10 is normally recessed from the upper surface of the lid T so as not to interfere with walking, and when used, protrudes from the upper surface of the lid T for easy holding, so that the handle 10 appears and disappears at any time. However, such a structure is conventionally known as a handle structure for a lid of this kind.

Next, the operation of the above embodiment will be described. As shown by the solid lines in FIGS. 1 and 2, in the normal use state, the opening 1 is closed by placing the opening / closing lid T on the lid receiving portion 2a of the lid mounting step 2. In this state, the seat S, which serves as a hinge connecting portion of the opening / closing lid T, has an inverted U-shaped cross section, and the arc-shaped top portion 6mr is substantially flush with the opening / closing lid T and the floor surface F. There is no danger that the connecting portion (sheet S) will protrude above the floor surface F and interfere with walking, etc., and it is safe and has a good appearance. Moreover, since the sheet S completely covers the gap between the one side edge portion 5 of the opening / closing lid T and the lid mounting step portion 2 (standing portion 2b) facing the opening / closing lid T, dust or the like enters the gap. There is no fear of clogging, and the opening / closing operation of the lid T is always performed without any trouble.

When the inside of the pit P is to be inspected through the opening 1, if the handle 10 of the opening / closing lid T is held in one hand and one of the lids T is lifted, the sheet S is used as a pivot. The opening / closing lid T can be rotated up and down. Since the opening / closing operation of the lid T can be easily and accurately performed by simply rotating the opening / closing lid T in this manner, even a small number of people (for example, one person) can easily perform the opening / closing operation, and further, during the opening / closing operation. There is no risk of accidentally dropping the lid T. Moreover, since the opening / closing lid T can be rotated by 180 degrees as shown by the chain line in FIG. 2, the lid T is naturally closed while the lid T is left open for inspection and other work. You don't have to worry.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments and various embodiments can be made within the scope of the present invention. For example, although the opening / closing lid T for closing the opening of the wiring pit has been described in the above-mentioned embodiment, the present invention is applied to the opening / closing lid for closing the openings of the water supply / drainage groove provided under the floor, the various grooves provided on the ground, the septic tank, the manhole, etc. Of course, it may be applied.

[0022]

[Effect of the invention]

 As described above, according to the invention of each claim, the one side edge portion and the upright portion are provided between the linear one side edge portion of the opening / closing lid and the upright portion of the lid mounting step portion facing the straight side edge portion. Since both sides in the width direction are connected to each other via a belt-shaped flexible sheet and the opening / closing lid can be opened / closed and rotated via the flexible sheet, the opening / closing lid is simply rotated. By doing so, the opening and closing operation of the lid can be performed easily and accurately, and even a small number of people (for example, one person) can easily perform the opening and closing operation, and there is a concern that the lid may be accidentally dropped during the opening and closing operation. Nor. In addition, since the pivot angle of the open / close lid is as large as 180 degrees, there is no concern that the lid will naturally close during inspections and other work with the lid open.

Further, the sheet has an inverted U-shaped cross section when the opening / closing lid is placed on the lid receiving portion, and the arc-shaped top portion thereof is substantially flush with the opening / closing lid and the installation surface. Therefore, with the opening / closing lid closed, there is no risk that the hinge connection part by the seat will project above the installation surface and interfere with walking, etc., and it is safe and has a good appearance. Moreover, since the above-mentioned sheet can cover the gap between the one side edge of the opening / closing lid and the lid mounting step (upright portion) facing the opening / closing lid, there is a risk that dust or the like may enter the gap and cause clogging. Therefore, the lid opening / closing operation can be performed without any trouble.

Further, according to the invention of claim 2, in particular, a first holding plate sandwiching one side portion of the sheet is provided on a surface of the edge portion on one side of the opening / closing lid facing the standing portion, and the standing portion is also provided. A second holding plate is overlapped and fixed on the opposite side of the opening / closing lid with the other side of the sheet, and the two holding plates are attached to each other with the opening / closing lid placed on the lid receiving part. Since the hinges are directly abutted against each other, even if the opening / closing lid can be rotated, the hinge connection structure is such that both side portions of the seat are clamped by the holding plate to the lid one side edge portion and the lid mounting step portion (standing portion), respectively. It is possible to contribute to cost reduction with a simple and simple one that is only fixed, and since the holding plate also serves as a seat fixing means and a protection means, the structure can be simplified accordingly.

Further, according to the invention of claim 3, the lid mounting step portion is constituted by an edge frame material having at least a lid receiving portion and an upright portion, and the edge frame material is fixed to a peripheral portion of the opening. As a result, the lid mounting step can be easily formed, and the work of fixing the side portion of the seat to the step (upright section) can be easily performed.

[Brief description of the drawings]

FIG. 1 is an overall plan view of an opening / closing lid device according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG. 1;

FIG. 3 is a plan view showing a conventional example in which an opening / closing lid is connected by a hinge.

FIG. 4 is a perspective view showing a conventional example in which the opening / closing lid is connected by a link-type hinge connecting mechanism.

[Explanation of symbols]

C: Edge frame material F: Floor surface as installation surface P: Pit T: Open / close lid S: Sheet 1 ... Opening 2 ... Lid mounting step 2a ... Lid receiving portion 2b ... Standing portion 5 ... Lid one side edge 6s ₁ ... Sheet one side 6s ₂ ... Other side part of seat 6m ... Middle part 6mr ... Top part 7 ₁ ... First pressing plate 7 ₂ ... Second pressing plate

Claims (3)

[Utility model registration claims] 1. An opening formed on a walkable installation surface (F)
The lid receiving portion (2a) and the lid receiving portion (2
A lid mounting step having an upright portion (2b) upright from a)
The part (2) is recessed from the installation surface (F) and
The lid (T) for closing the mouth (1) is provided with the lid receiving portion (2a).
The upper surface of the lid (T) is substantially flush with the installation surface (F).
In the opening / closing lid device to be placed so that the opening / closing lid (T) has one linear edge portion (5) and
Between the upright portion (2b) and the one side edge portion (5) and
Both side portions in the width direction (6s₁, 6s _Two)
The strip-shaped flexible sheets (S) that are respectively joined together
The sheets are tied together and separated by the widthwise intermediate portion (6 m) of the sheet (S).
The opening / closing lid (T) constitutes a pivotal fulcrum of the opening / closing lid (T).
a) It has an inverted U-shaped cross section when placed on top, and
The arc-shaped top (6mr) is attached to the opening / closing lid (T) and the above-mentioned installation.
An opening / closing lid device characterized by being substantially flush with the placing surface (F)
Place. 2. The upright portion (2) of the one side edge portion (5).
On the surface facing the b), one side portion (6s) of the sheet (S) is provided.
The first pressing plate across the ₁₎ (7 ₁₎ is polymerized secured, also wherein the facing surfaces of the one side edge portion of the standing part (2b) (5), the other side of the sheet (S) The second holding plate (7 ₂ ) is superposed and fixed with the portion (6s ₂ ) sandwiched therebetween, and the holding plates (7 ₁ , 7) are placed with the opening / closing lid (T) placed on the lid receiving portion (2a). ₂ ) The opening / closing lid device according to claim 1, wherein the lids are directly abutted against each other. 3. The lid mounting step (2) is composed of an edge frame material (C) having at least the lid receiving portion (2a) and a standing portion (2b), and the edge frame material (C). Is fixed to the peripheral portion of the opening (1).
Or the opening / closing lid device according to 2.