JP7285686B2 - sign post - Google Patents

Description

The present invention relates to a signpost used for road signs and the like.

In a sign post used for road signs, etc., a leg for burying is buried in the road, and a male screw part provided on the body of the sign post can be fastened to a female thread part provided on the leg for burying. , there is known a technique that enables attachment and detachment of the signpost main body. In such technology, anti-freezing agents sprayed on the road surface may enter the screw fastening part, causing the male screw part and the female screw part to stick together. can become a big deal. Therefore, the applicant of the present application has proposed a technique of providing a gasket for suppressing intrusion of an anti-freezing agent or the like into a screw fastening portion (see Patent Document 1).

A conventional marker pole will be described with reference to FIG. FIG. 7 is a partially enlarged cross-sectional view of a marker pole according to a conventional example. The signpost includes a signpost main body 110, a core portion 120 provided at the lower end of the signpost main body 110, and a base portion 130 on which the core portion 120 is mounted. A head portion of the bolt 140 is embedded in the core portion 120 , and a portion of the shaft portion of the bolt 140 is configured to protrude from the core portion 120 .

This signpost is provided with an embedding leg 500 to be embedded in the road. The embedding leg 500 includes a base body 510 and an adhesive curing portion 520 that fills a gap between a hole formed in the road and the base body 510 and hardens to fix the base body 510 to the road. I have it. The leg body 510 is provided with a stepped hole in which a female threaded portion is formed, and by rotating the sign post body 110 itself forward and reverse, the male threaded portion of the bolt 140 is fastened to the female threaded portion of the leg body 510. or can be unfastened. As a result, the marker post main body 110 can be attached and detached. In addition, two gaskets 531 and 532 and a snap ring 540 are provided in the sign post according to this conventional example. As a result, it is possible to suppress the intrusion of an antifreeze agent or the like into the screw fastening portion.

However, in general, there are standards for the male screw portion provided in the main body of the signpost, and although the dimensions and shape are determined, the dimensions and shape of the embedding leg vary depending on the manufacturer. Therefore, depending on the size and shape of the leg body 510, the tightening force of the leg body 510 on the gaskets 531 and 532 becomes too large, and when the marker post main body 110 is removed, the gaskets 531 and 532 and the retaining ring 540 may not be attached to the embedding legs. 500 may be left behind, and the workability may be deteriorated. Thus, there is still room for improvement.

JP 2015-206169 A

SUMMARY OF THE INVENTION An object of the present invention is to provide a marker post that can prevent the gasket from being left behind when the marker post main body is removed from the embedding leg.

The present invention employs the following means to solve the above problems.

That is, the sign post of the present invention is
a signpost body;
a screw member provided on the lower end side of the sign post body;
an embedding leg that is embedded in a road and has a hole that opens to the side to which the sign post body is attached and has a female threaded portion to which the male threaded portion of the screw member is fastened;
A sign post comprising
The hole is stepped and has a small-diameter portion in which the female screw portion is formed, and a large-diameter portion located on the side of the small-diameter portion to which the sign post body is attached and having a larger diameter than the small-diameter portion. Consists of holes and
a single gasket that seals an annular gap between a portion of the shaft portion of the screw member where the male thread portion is not provided and the large diameter portion;
a fixing member provided between the gasket and a stepped surface of the stepped hole for positioning and fixing the gasket with respect to the shaft;
wherein the fixing member is a nut located closer to the head than the incomplete thread portion of the shaft portion .

According to the present invention, since the gasket is fixed to the shaft portion by the fixing member, the gasket is prevented from being left behind on the embedding leg when the marker post main body is removed from the embedding leg.

The nut preferably has a polygonal outer periphery and is in contact with the inner peripheral surface of the large-diameter portion.

This not only prevents the gasket from coming off the shaft of the threaded member, but also allows the nut to come into contact with the inner peripheral surface of the large-diameter portion, allowing the gasket to be more reliably positioned with respect to the shaft. fixed.

In addition, another sign post of the present invention is
a signpost body;
a screw member provided on the lower end side of the sign post body;
an embedding leg that is embedded in a road and has a hole that opens to the side to which the sign post body is attached and has a female threaded portion to which the male threaded portion of the screw member is fastened;
A sign post comprising
The hole has a small diameter portion in which the female screw portion is formed, and the signpost main body is larger than the small diameter portion.
A stepped hole located on the mounting side and having a large-diameter portion having a larger diameter than the small-diameter portion,
a single gasket that seals an annular gap between a portion of the shaft portion of the screw member where the male thread portion is not provided and the large diameter portion;
a fixing member provided between the gasket and a stepped surface of the stepped hole for positioning and fixing the gasket with respect to the shaft;
with
The fixing member has an inner peripheral surface that is in close contact with both a portion of the shaft portion of the screw member where the male thread portion is provided and a portion where the male thread portion is not provided, and one end side and the other end side of the fixing member The gasket and the annular member are made of an elastic material and are in close contact with the stepped surfaces of the stepped hole.

This not only prevents the gasket from coming off the shaft of the threaded member, but also brings the gasket into close contact with the stepped surfaces of the stepped hole on one end side and the other end side of the annular member. , is fixed in a more reliably positioned state with respect to the shaft.

As described above, according to the present invention, it is possible to prevent the gasket from being left behind when the marker post body is removed from the embedding leg.

FIG. 1 is a partially cutaway front view of a marker post according to an embodiment of the present invention. FIG. 2 is a partially enlarged cross-sectional view of a marker post according to Embodiment 1 of the present invention. FIG. 3 is a plan view of a nut according to Example 1 of the present invention. FIG. 4 is a side view of the nut according to Example 1 of the present invention. FIG. 5 is a partially enlarged cross-sectional view of a marker post according to Embodiment 2 of the present invention. FIG. 6 is a partially enlarged cross-sectional view of a marker post according to a modification. FIG. 7 is a partially enlarged cross-sectional view of a marker pole according to a conventional example.

BEST MODE FOR CARRYING OUT THE INVENTION A mode for carrying out the present invention will be exemplarily described in detail below based on an embodiment with reference to the drawings. However, unless otherwise specified, the dimensions, materials, shapes, relative arrangements, etc. of the components described in this embodiment are not intended to limit the scope of the present invention only to them. .

<Signpost>
With reference to FIG. 1, the overall configuration of a sign post according to an embodiment of the present invention will be described. FIG. 1 is a partially broken front view of a marker post according to an embodiment of the present invention. A sign post according to an embodiment of the present invention is used as a road sign installed, for example, in a median strip.

The signpost 10 includes a signpost main body 110, a core portion 120 provided at the lower end of the signpost main body 110, and a base portion 130 on which the core portion 120 is mounted. A plurality of reflective sheets 111 are attached to the sign post main body 110 . A head portion of a bolt 140 is embedded in the core portion 120 , and a portion of the shaft portion of the bolt 140 is configured to protrude from the core portion 120 . The sign post 10 is provided with an embedding leg 300 to be embedded in the road. A release sheet 200 is provided between the pedestal 130 and the road surface.

(Example 1)
A signpost according to a first embodiment of the present invention will be described with reference to FIGS. 2 to 4. FIG. FIG. 2 is a partially enlarged cross-sectional view of the marker post according to Example 1 of the present invention, and is a schematic cross-sectional view enlarging the vicinity of the attaching portion between the marker post main body and the embedding leg. The marker post according to this embodiment has a substantially rotationally symmetrical shape, and FIG. 2 shows a cross section of the marker post cut along a plane including the central axis of the marker post. 3 is a plan view of the nut according to Example 1 of the present invention, and FIG. 4 is a side view of the nut according to Example 1 of the present invention.

A bolt 140 as a screw member is provided on the lower end side of the marker post main body 110 according to the present embodiment. As described above, the head portion 141 of the bolt 140 is embedded in the core portion 120 and a portion of the shaft portion is configured to protrude from the core portion 120 .

The embedding leg 300 includes a leg body 310 and an adhesive curing portion 320 that fills a gap between a hole formed in the road and the leg body 310 and hardens to fix the leg body 310 to the road. I have it. The leg body 310 is formed with a hole having a female screw portion 312 that opens to the side to which the sign post main body 110 is attached and to which the male screw portion 143 of the bolt 140 that is a screw member is fastened. This hole is a stepped hole having a small diameter portion in which the female screw portion 312 is formed, and a large diameter portion located on the side where the sign post main body 110 is attached from the small diameter portion and having a larger diameter than the small diameter portion. It is composed of An annular groove 313 is formed on the outer peripheral surface of the leg body 310 . This prevents the script body 310 from slipping out of the adhesive curing section 320 .

With the above configuration, the male screw portion 143 of the bolt 140 can be fastened or released from the female screw portion 312 of the script body 310 by rotating the sign post main body 110 itself forward and backward. As a result, the marker post main body 110 can be attached and detached.

In the signpost 10 according to the present embodiment, an annular gap between the portion 142 of the shaft portion of the bolt 140 where the male thread portion 143 is not provided and the large-diameter portion of the stepped hole formed in the leg body 310 is formed. A single gasket 330 is provided to seal the gap. The gasket 330 according to the present embodiment includes a cylindrical portion 331 closely attached to the shaft portion of the bolt 140, and a stepped hole formed in the leg body 310 extending from the lower end side of the cylindrical portion 331 toward the upper end side and radially outward. and a lip portion 332 in close contact with the inner peripheral surface of the large-diameter portion. However, the gasket in the present invention is not limited to such a configuration, and various known techniques can be applied.

Further, in the signpost 10 according to the present embodiment, the gasket 330 is provided between the step surface 311 of the stepped hole formed in the leg body 310, and the gasket 330 is positioned and fixed to the shaft portion of the bolt 140. A plate-shaped nut 340 is provided as a fixing member. The nut 340 is made of metal, has a polygonal outer periphery, and is configured to contact the inner peripheral surface of the large-diameter portion of the stepped hole formed in the leg body 310 . More specifically, as shown in FIGS. 3 and 4, the nut 340 includes a flat plate portion 341 having a hexagonal outer periphery and six side plate portions 342 provided on the side surfaces of the flat plate portion 341 . An opening 341a having a female screw is provided in the center of the flat plate portion 341. As shown in FIG. The nut 340 configured in this way is screwed onto the male threaded portion 143 of the bolt 140 to a position where it can pass through the incomplete threaded portion. This prevents the nut 340 from slipping off the shaft of the bolt 140 . Cylindrical portion 331 of gasket 330 is sandwiched between pedestal portion 130 and nut 340 , and gasket 330 is positioned and fixed to the shaft portion of bolt 140 .

In the state where the marker post main body 110 is attached to the embedding leg 300, the six corners on the outer peripheral side of the nut 340 are aligned with the inner peripheral surface of the large-diameter portion of the stepped hole formed in the leg body 310. (slightly biting) As a result, the nut 340 is more reliably positioned and fixed to the shaft portion of the bolt 140 . In addition, along with this, the gasket 330 is also more reliably positioned and fixed to the shaft portion of the bolt 140 .

<Excellent points of the sign post according to the present embodiment>
According to the signpost 10 according to this embodiment, the gasket 330 is fixed to the shaft portion of the bolt 140 by the nut 340 as the fixing member. Therefore, when the marker post main body 110 is removed from the embedding leg 300 , the gasket 330 is prevented from being left behind on the embedding leg 300 . In this embodiment, the fixing member employs a nut 340 having a polygonal outer periphery and being in contact with the inner peripheral surface of the large-diameter portion of the stepped hole formed in the leg body 310 . Therefore, the gasket 330 is fixed to the shaft in a more reliably positioned state. As a result, the sealing function of the gasket 330 can be stably exhibited.

(Example 2)
Embodiment 2 of the present invention is shown in FIG. In the first embodiment, the fixing member is a nut, but in the present embodiment, the fixing member is an annular member made of an elastic material. Since other configurations and functions are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

FIG. 5 is a partially enlarged cross-sectional view of a marker post according to Example 2 of the present invention, and is a schematic cross-sectional view enlarging the vicinity of the attaching portion between the marker post main body and the embedding leg. The marker post according to this embodiment has a substantially rotationally symmetrical shape, and FIG. 5 shows a cross section of the marker post cut along a plane including the central axis of the marker post. Note that the overall configuration of the sign post according to the embodiment of the present invention is as described with reference to FIG.

The sign post according to the present embodiment also includes an embedding leg 300X having a base body 310 and an adhesive curing portion 320, and a gasket 330. As shown in FIG. The configurations of the base body 310, the adhesive curing portion 320, and the gasket 330 are the same as those described in the first embodiment.

In the sign post according to the present embodiment, the gasket 330 is provided between the step surface 311 of the stepped hole formed in the leg body 310, and the gasket 330 is positioned and fixed to the shaft portion of the bolt 140. An annular member 350 made of an elastic body (e.g., elastomer) is provided as a fixing member. This annular member 350 is configured by a cylindrical member. The annular member 350 is attached so that its inner peripheral surface is in close contact with both the portion provided with the male threaded portion 143 and the portion 142 not provided of the shaft portion of the bolt 140, which is a threaded member. . In addition, when the marker post main body 110 is attached to the embedding leg 300, the one end side and the other end side of the annular member 350 are in close contact with the stepped surfaces 311 of the stepped holes formed in the gasket 330 and the leg body 310, respectively. is configured to

The gasket 330 is fixed to the shaft portion of the bolt 140 by the annular member 350, which is a fixing member, also in the sign post according to the present embodiment configured as described above. That is, the cylindrical portion 331 of the gasket 330 is sandwiched between the pedestal portion 130 and the annular member 350 , and the gasket 330 is positioned and fixed to the shaft portion of the bolt 140 . Therefore, when the marker post main body 110 is removed from the embedding leg 300X, the gasket 330 is prevented from being left behind on the embedding leg 300X. It should be noted that the annular member 350 is in close contact with both the portion provided with the male threaded portion 143 and the portion 142 not provided of the shaft portion of the bolt 140 whose inner peripheral surface is a threaded member, thereby Falling off is suppressed. In addition, when the marker post body 110 is attached to the embedding leg 300X, one end side and the other end side of the annular member 350 are aligned with the stepped surface 311 of the stepped hole formed in the gasket 330 and the leg body 310. adhere to each other. Therefore, the gasket 330 is fixed to the shaft in a more reliably positioned state. As a result, the sealing function of the gasket 330 can be stably exhibited.

(Reference example)
FIG. 6 shows a reference example. In this reference example, a configuration in which the gasket is not provided among the configurations of the second embodiment is shown. Since other configurations and functions are the same as those of the first and second embodiments, the same components are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

FIG. 6 is a partially enlarged cross-sectional view of the marker post according to the reference example, and is a schematic cross-sectional view enlarging the vicinity of the attaching portion between the marker post main body and the embedding leg. The marker post according to this reference example has a substantially rotationally symmetrical shape, and FIG. 6 shows a cross section of the marker post cut along a plane including the central axis of the marker post. Note that the overall configuration of the sign post according to this reference example is as described with reference to FIG.

The embedding leg 300</b>Y according to this reference example also includes a base body 310 and an adhesive curing section 320 . These configurations and the like are as described in the first and second embodiments. Note that no gasket is provided in the sign post according to this reference example.

The sign post according to this reference example is provided with an elastic (e.g., elastomer) annular member 360 provided between the pedestal portion 130 and the stepped surface 311 of the stepped hole formed in the leg body 310. It is This annular member 360 is configured by a cylindrical member. The annular member 360 is attached so that its inner peripheral surface is in close contact with the shaft portion of the bolt 140, which is a screw member.

In the marker post according to this reference example, even before the marker post main body 110 is attached to the embedding leg 300Y, the annular member 360 prevents the pedestal portion 130 from coming off the core portion 120. can. Therefore, the installation work of the sign post body 110 can be easily performed.

10 sign post 110 sign post main body 111 reflection sheet 120 core portion 130 pedestal portion 140 bolt 141 head portion 142 portion where male screw portion is not provided 143 male screw portion 200 release sheet 300, 300X, 300Y embedding leg 310 script body 311 step Surface 312 Female screw portion 313 Annular groove 320 Adhesive curing portion 330 Gasket 331 Cylindrical portion 332 Lip portion 340 Nut 341 Flat plate portion 341a Opening 342 Side plate portion 350, 360 Annular member

Claims (3)

a signpost body;
a screw member provided on the lower end side of the sign post body;
an embedding leg that is embedded in a road and has a hole that opens to the side to which the sign post body is attached and has a female threaded portion to which the male threaded portion of the screw member is fastened;
A sign post comprising
The hole is stepped and has a small-diameter portion in which the female screw portion is formed, and a large-diameter portion located on the side of the small-diameter portion to which the sign post body is attached and having a larger diameter than the small-diameter portion. Consists of holes and
a single gasket that seals an annular gap between a portion of the shaft portion of the screw member where the male thread portion is not provided and the large diameter portion;
a fixing member provided between the gasket and a stepped surface of the stepped hole for positioning and fixing the gasket with respect to the shaft;
, wherein the fixing member is a nut located closer to the head than the incomplete thread portion of the shaft portion . 2. The marker post according to claim 1, wherein the nut has a polygonal outer periphery and is in contact with the inner peripheral surface of the large diameter portion. a signpost body;
a screw member provided on the lower end side of the sign post body;
an embedding leg that is embedded in a road and has a hole that opens to the side to which the sign post body is attached and has a female threaded portion to which the male threaded portion of the screw member is fastened;
A sign post comprising
The hole is stepped and has a small-diameter portion in which the female screw portion is formed, and a large-diameter portion located on the side of the small-diameter portion to which the sign post body is attached and having a larger diameter than the small-diameter portion. Consists of holes and
a single gasket that seals an annular gap between a portion of the shaft portion of the screw member where the male thread portion is not provided and the large diameter portion;
provided between the gasket and the stepped surface of the stepped hole, and connecting the gasket to the shaft portion;
a fixing member positioned and fixed with respect to
with
The fixing member has an inner peripheral surface that is in close contact with both a portion of the shaft portion of the screw member where the male thread portion is provided and a portion where the male thread portion is not provided, and one end side and the other end side of the fixing member A marker post, characterized in that it is an annular member made of an elastic body that is in close contact with a gasket and a stepped surface of the stepped hole, respectively.

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