JP3542236B2 - Protective lid of the inner lid for public measure - Google Patents

Description

[0001]
[Industrial applications]
TECHNICAL FIELD The present invention relates to a protective cover for an inner lid for a public square.
[0002]
[Prior art]
As shown in FIG. 7, the public basin 100 is installed at a connection point between the drainage channel in the residential land and the public sewer pipe in the ground of a public road near the public-private boundary line L. A rising pipe 110 is connected to the public basin 100, and an inner lid 130 is attached to and detached from a lid receiving member 120 provided at an upper end of the rising pipe 110. Then, a protective cover A is installed so as to surround the inner lid 130, and the inner lid 130 is protected.
[0003]
This kind of protective cover A basically has a cover receiving frame 1 installed on a concrete pedestal 150 provided around an upper end portion of a riser pipe 110, and a cover receiving portion at an upper end portion of the cover receiving frame 1. It has a configuration in which a lid 3 is openably and closably connected to the portion 2.
[0004]
8 and 9 are cross-sectional views of a conventional protective lid A, wherein FIG. 8 shows a state where the lid 3 is closed, and FIG. 9 shows a state where the lid 3 is opened.
[0005]
In this protective cover A, the cover receiving portion 2 and the cover 3 are connected by using a hinge 140. The hinge 140 includes a support rod 141 whose base is swingably attached to the lid 3, and a bracket 142 provided on the lid receiving section 2, and the support rod 141 is freely inserted into a hole 143 of the bracket 142. It is configured to be inserted.
[0006]
In the protective cover A having such a configuration, when the cover 3 is closed as shown in FIG. 8, substantially the entire support rod 141 hangs through the hole 143 of the bracket 142 in the cover receiving frame 1. When the cover 3 is opened as shown in FIG. 9, the support rod 141 moves upward through the hole 143 of the bracket 142 while rotating with respect to the cover 3, and is provided at the lower end of the support rod 141. The joint 144 is engaged with the bracket 142 from below, and the support rod 141 is in contact with the inner surface of the lid receiver 2, so that the outer periphery of the lid 3 rides on the upper end surface of the lid receiver 2. 3 is half-open.
[0007]
[Problems to be solved by the invention]
However, the above-mentioned conventional protective lid A has the following problems.
[0008]
That is, when the lid 3 is closed and attached to the lid receiving portion 2, the hanging space of the supporting rod 141 must be secured inside the lid receiving frame 1 so that the hanging supporting rod 41 does not hit the inner lid 130. Therefore, it is necessary to make the diameter of the lid receiving frame 1 considerably larger than the diameter of the inner lid 130 and to make the lid receiving frame 1 sufficiently high.
[0009]
However, since the lid receiving frame 1 is required to have strength enough to withstand the load of a car or the like running on a public road, if the lid receiving frame 1 is made large and tall as described above, the lid receiving frame 1 It is inevitable to increase the wall thickness and adopt a complicated structure for reinforcement, resulting in an increase in cost.
[0010]
Further, if the lid receiving frame 1 is made large and tall to secure a sufficient hanging space for the support rod 141, the hanging space becomes a large dead space, so that waste is increased. Since the distance from the opening to the inner lid 130 is increased, it is difficult to remove the inner lid 130 and inspect the riser pipe 110 and the public yard 100 inside.
[0011]
In addition, the conventional protective lid A cannot be fully opened with the lid 3 turned upside down by 180 degrees, and the lid 3 is half-opened as shown in FIG. There was also a problem that it was not possible to perform an internal inspection.
[0012]
The present invention has been made in view of the above problems, and by devising a structure of a hinge that connects a lid receiving portion of a lid receiving frame and a lid, a part of the hinge when the lid is closed. Of the lid in a public basin that can be made smaller and less costly by preventing the hang from falling into the lid receiving frame, and keeping the diameter and height of the lid receiving frame smaller than conventional ones. The purpose is to provide.
[0013]
In addition, the present invention provides a protective lid that allows the lid to be fully opened by turning it upside down by 180 degrees or to be fully opened by turning it 180 degrees horizontally without turning it upside down, so that inspection can be easily performed from any direction. The purpose is to do.
[0014]
[Means for Solving the Problems]
In order to achieve the above object, the protective cover of the inner cover for public basin of the present invention is provided so as to surround the inner cover for public basin, and is attached to and detached from the lid receiving frame having a lid receiving portion at an upper end portion. And a hinge for connecting the lid to the lid receiving portion so as to be openable and closable, wherein the hinge is a first hinge member having a base rotatably attached to the lid receiving portion. And a second hinge member having a base rotatably attached to the lid, wherein the first hinge member has a split groove formed from the base to near the distal end, and closes the lid. An engaging piece that engages with the lid receiving portion from below to prevent it from hanging down from the first hinge member when projecting from the base portion, and the second hinge member is substantially formed from the base portion. The distal end of the U-shaped bent rod portion is loosely inserted into the split groove, and Fixing pin to the distal end of the bent rod portion protruding slightly into Luo downward and is characterized in that it is projected.
[0015]
In the protective lid of the present invention, when the lid is closed and attached to the lid receiving portion at the upper end of the lid receiving frame, the engagement piece that engages from below with the lid receiving portion allows the lower portion of the first hinge member to move downward. Hanging is prevented, and the tip of the bent rod portion of the second hinge member loosely inserted into the split groove of the first hinge member slightly protrudes downward from the split groove. Therefore, even if the diameter and height of the lid receiving frame are smaller than those of the related art, the first hinge member hangs down and hits the inner lid for the public box, or the distal end of the bent rod portion of the second hinge member becomes the second hinge member. Since it does not protrude largely downward from the split groove of one hinge member and hits the inner lid for the public box, it is possible to reduce the size and cost of the protective lid.
[0016]
In addition, the protective lid of the present invention in which the lid is connected to the lid receiving portion by the hinge including the first hinge member and the second hinge member can be fully opened with the lid turned upside down by 180 degrees or horizontally without turning over. Can be rotated 180 degrees and fully opened, so that inspection can be easily performed from any direction. The opening / closing operation of the lid will be described in detail below with reference to the drawings using specific embodiments of the present invention.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
1 is a sectional view showing a protective cover A according to an embodiment of the present invention, FIGS. 2 to 5 are enlarged partial sectional views illustrating the operation of the protective cover A, and FIG. 6 is a first hinge member and a second hinge. It is a perspective view which shows a member.
[0018]
The protective lid A illustrated in FIG. 1 has a concrete pedestal 150 buried around the upper end of a riser pipe 110 from a public basin, and covers the lid receiving member 120 at the upper end of the riser pipe, similarly to the conventional protective lid. The lid receiving frame 1 is set on the pedestal 150 so as to surround the inner lid 130 for the public basin. The lid 3 is attached to the lid receiving portion 2 at the upper end of the lid receiving frame by hingedly opening and closing the lid 3.
[0019]
The lid receiving frame 1 and the lid 3 are made of cast iron or other metal, BMC (bulk molding compound), SMC (sheet molding compound), other resin concrete, polyethylene, or other synthetic resin, etc., and have high strength. You.
[0020]
The above-mentioned hinge 4 is different from the conventional hinge 140, and comprises a first hinge member 4a and a second hinge member 4b as shown in FIG. Each of these hinge members 4a, 4b is made of cast iron or other metal, synthetic resin, or the like.
[0021]
The first hinge member 4a is a substantially U-shaped member in which a split groove 42a is formed from the base 41a to the vicinity of the distal end. A support shaft insertion hole 43a is formed in the base 41a, and the base 41a extends rearward. An engagement piece 44a is provided in a protruding manner.
[0022]
As shown in FIGS. 2 to 5, the base 41a of the first hinge member 4a is rotatably attached to a bracket 2a inside the lid receiving portion 2 with a support shaft 5a, as shown in FIG. When the lid 3 is closed, the engagement piece 44a is engaged with the lower surface of the lid receiving portion 2 from below to prevent the first hinge member 4a from hanging down, and the first hinge member 4a is substantially horizontally. Is to be kept.
[0023]
On the other hand, as shown in FIG. 6, the second hinge member 4b is provided with a substantially L-shaped bent rod portion 42b protruding from a bifurcated base portion 41b. 44b is protruded. The diameter of at least the tip side (the tip side bent obliquely downward by about 45 degrees) of the bent rod portion 42b is set smaller than the groove width of the split groove 42a so that the bent rod portion 42b can be loosely inserted into the split groove 42a of the first hinge member. ing. Further, a shaft insertion hole 43b is formed in the base 41b.
[0024]
As shown in FIGS. 2 to 5, the base 41b of the second hinge member 4b is rotatably attached to a bracket 3a on the back surface of the lid 3 with a support shaft 5b. It is loosely inserted in the split groove 42a of the first hinge member 4a. When the lid 3 is closed as shown in FIG. 2, the tip of the bent rod portion 42b (the tip provided with the retaining pin 44b) projects slightly obliquely downward from the split groove 42a. In addition, a notch 3b into which the bent rod portion 42b is loosely fitted when the cover 3 is opened upside down by 180 degrees is formed in the peripheral portion of the cover 3 as shown in FIG.
[0025]
It should be noted that the loose insertion of the bent rod portion 42b into the split groove 42a is performed by changing the direction of the second hinge member 4b by 90 degrees in the horizontal direction so that the retaining pin 44b is parallel to the split groove 42a. What is necessary is just to insert the front end side of 42b into the dividing groove 42a from above.
[0026]
When the cover 3 is closed and is attached to the cover receiving portion 2 at the upper end of the cover receiving frame 1, the protective cover A having the above configuration engages the engaging piece 44a of the first hinge member 4a with the cover receiving portion 2 from below. In combination, the first hinge member 4a is maintained substantially horizontal, and the distal end of the bent rod portion 42b of the second hinge member 4b only slightly projects obliquely downward from the split groove 42a of the first hinge member 4a. Even if the diameter and height of the receiving frame 1 are made smaller than those of the related art, the first hinge member 4a and the second hinge member 4b do not hit the inner cover 130 for the public square. Therefore, the size of the cover receiving frame 1 can be reduced, and the size and cost of the protective cover A can be reduced.
[0027]
Next, with reference to FIGS. 2 to 5, the operation of the protective cover A when the cover is opened and closed will be described.
[0028]
When opening the lid 3 from the state of being attached to the lid receiving portion 2 as shown in FIG. 2, the lid 3 is first lifted upward as shown in FIG. Then, the second hinge member 4b rotates counterclockwise about the support shaft 5b, and is in a hanging state as illustrated.
[0029]
Next, when the lid 3 is turned over, the second hinge member 4b further rotates counterclockwise, and the retaining pin 44b of the second hinge member 4b engages the first hinge member 4a from below. In order to raise the first hinge member 4a, the first hinge member 4a rotates clockwise around the support shaft 5a.
[0030]
Then, as shown in FIG. 4, when the lid 3 is turned upside down by 180 degrees and the peripheral edge of the lid 3 is put on the upper end surface of the lid receiving portion 2, the first hinge member 4 a is in the upright posture, and The bent rod portion 42b of the hinge member 4b is loosely fitted into the notch 3b on the peripheral edge of the lid 3 to be in a horizontal position, and the distal end side of the bent rod portion 42b protruding from the lid 3 is formed by the split groove 42a of the first hinge member 4a. It is engaged with the front end (upper end), and is in a state of being connected to the first hinge member 4a undetachably by the retaining pin 44b.
[0031]
When the cover 3 is turned upside down and closed from the fully opened state as shown in FIG. 4, it goes without saying that the above operation is reversed.
[0032]
Further, the protective cover A is rotated by 180 degrees in the horizontal direction about the hanging second hinge member 4b as a rotation axis while the cover 3 lifted as shown in FIG. 3 is placed on the upper end surface of the cover receiving portion 2. When the lid 3 is further shifted outward, the lid 3 can be fully opened without turning over as shown in FIG. In this case, as shown in FIG. 3, the distal end portion of the hanging bent portion 42b (the distal end portion loosely inserted into the split groove 42a of the first hinge member 4a) is slightly bent so that the distal end portion becomes vertical. This is preferable because, when the cover 3 is rotated in the horizontal direction, the front end smoothly rotates inside the split groove 42a, and the rotation of the cover 3 is further facilitated.
[0033]
As described above, the protective cover A can be fully opened by turning the cover 3 upside down by 180 degrees, or can be fully opened by turning it 180 degrees horizontally without turning over, so that the riser pipe 110 can be opened from any direction. The inside of the public basin can be inspected, and the height of the lid receiving frame 1 is reduced as described above, so that the distance from the upper end of the lid receiving frame 1 to the upper end of the riser pipe 110 is reduced. Since the inside of the pipe 110 can be easily seen, the workability of the internal inspection is greatly improved as compared with the conventional protective lid.
[0034]
【The invention's effect】
As is clear from the above description, the protective lid of the present invention has a smaller size because the hinge does not hit the inner lid for the public square even if the diameter and height of the lid receiving frame are smaller than those of the conventional one. In addition, the lid can be fully opened even if the lid is not turned upside down by 180 degrees, so not only is the opening and closing operation of the lid convenient, but also it is not disturbed by the lid from any direction. In addition, it has a remarkable effect that the inside of a riser or a public basin can be easily inspected.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a protective lid of an inner lid for a public square according to an embodiment of the present invention.
FIG. 2 is an enlarged partial cross-sectional view illustrating a cover opening / closing operation of the protective cover, showing a state in which the cover is closed.
FIG. 3 is an enlarged partial cross-sectional view illustrating a cover opening / closing operation of the protective cover, showing a state where the cover is lifted.
FIG. 4 is an enlarged partial sectional view for explaining a cover opening / closing operation of the protective cover, showing a state where the cover is turned upside down by 180 degrees and fully opened.
FIG. 5 is an enlarged partial cross-sectional view for explaining a cover opening / closing operation of the protective cover, and shows a state in which the cover is rotated 180 degrees in the horizontal direction without being turned over and fully opened.
FIG. 6 is a perspective view showing a first hinge member and a second hinge member.
FIG. 7 is an explanatory view showing a place where a protective lid is installed.
FIG. 8 is a sectional view showing a conventional protective lid.
FIG. 9 is a cross-sectional view showing a conventional protective lid with the lid opened.
[Explanation of symbols]
A Protective lid 1 Lid receiving frame 2 Lid receiving part 3 Lid 4 Hinge 4a First hinge member 4b Second hinge member 41a Base 42a of first hinge member Split groove 44a Engaging piece 41b Base 42b of second hinge member Bending rod Part 44b retaining pin 130 inner lid for public measure

Claims (1)

A lid receiving frame provided surrounding the inner lid for the public basin and having a lid receiving portion at an upper end portion, a lid detachably attached to the lid receiving portion, and a hinge for connecting the lid to the lid receiving portion so as to be freely opened and closed. In the protective lid with
The hinge includes a first hinge member whose base is rotatably attached to the lid receiving portion, and a second hinge member whose base is rotatably attached to the lid. The hinge member has a split groove formed from the base portion to the vicinity of the distal end, and an engagement piece that engages with the lid receiving portion from below to prevent the first hinge member from hanging down when the lid is closed. The second hinge member is protruded from the base, and the distal end side of the substantially L-shaped bent rod protruded from the base is loosely inserted into the split groove and bent slightly projecting downward from the split groove. A protective cover for an inner cover of a public measure, wherein a retaining pin is provided at a tip of a rod portion.

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