JP2003119737A - Cylindrical support fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the defect that a mounting nut 51 or the like is projected to the pedestrian side from the outer circumferential surface of a cylindrical support such as a guard-rail support 2 or the like in the support and there is the danger that a pedestrian is injured by the hooking of a skirt and baggage or the like of the pedestrian or the hooking of a hand and a projecting section is rusted. SOLUTION: In the cylindrical support fixture 1 for installing a guard rail or the like to the cylindrical support, the fixture 1 has a mounting bolt section 10 with a normal male screw 100, a reverse male screw section 11 with a normal female screw 111 screwed to the normal male screw 100 and a reverse male screw 110 and an internal adjusting section 12 with a reverse female screw 120 screwed to the reverse male screw 110.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular support fixture for attaching a guard rail, a protective fence, a protective wall or the like to a hollow cylindrical support such as a guardrail support or a tubular support such as a hollow square tubular support. .

[0002]

2. Description of the Related Art As a conventional cylindrical support fixture 1, as shown in FIGS. 5 and 6, a bolt 50 and a nut 51 are used.
Was often used as a guardrail fixture. Conventionally, in order to attach the guardrail 4 to the hollow cylindrical guardrail column 2 which is a tubular column, bolts 50 and nuts 51 are attached through the attachment plate 3 while penetrating the guardrail column 2 which is a tubular column. It was

Conventionally, as shown in FIG. 6, a hole through which a mounting bolt 50 can be inserted is inserted into a guardrail support 2 which is a cylindrical support, and the mounting bolt 50 is inserted from a through hole 20 on the roadside. The bolt head 50a is inserted through the mounting plate 3 located on the side of the road, and the mounting nut 51 is screwed onto the foot of the mounting bolt 50 protruding from the through hole 20 on the sidewalk to tighten the mounting. The plate-like body 3 was fixed to and attached to the guardrail column 2. Guardrail 4
It is attached to the attachment plate 3 by a bolt nut 30.

Further, even if the positions of the mounting nuts 51 of the bolts and nuts mounted on the guardrail support column 2 are reversed, the bolt head 50a or the nut 51 projects from the cylindrical outer peripheral surface onto the cylindrical outer peripheral surface of the cylindrical guardrail support column 2. Was set up.

In addition to the guardrails, the hollow cylindrical support used for a fence in a park or the like, and the tubular support vertically installed on the support, are mounted on the tubular support in the horizontal direction by the bolts as described above. The nut was penetrated and attached to the cylindrical support.

[0006]

However, when the guardrail 4 is attached to the guardrail column 2 with the attachment bolts 50 and nuts 51, the attachment nut 51 or the bolt head 50a from the guardrail column 2 located on the pedestrian side as in the prior art. However, it is provided so as to project from the outer peripheral surface of the cylindrical support. Therefore, there is a problem in that a pedestrian's skirt, slacks, baggage, etc. are caught by the nuts 51 and the like protruding from the peripheral surface of the cylindrical column, and the clothes are cleaved. Further, there is a problem that the pedestrian's hand or the nail is directly applied to the nut 51 or the like to easily cause a cut.
Especially on a narrow sidewalk or a sidewalk with a large number of people, there is a risk that children and the elderly will be pressed against the guardrail column and will be caught unintentionally by the mounting nuts and bolt heads protruding on the surface of the guardrail column, causing unexpected damage.

Further, even when a pedestrian runs on a bicycle, if there are protrusions such as mounting nuts on the sidewalk from the guardrail support, clothes such as skirts, baggage, and pedals may be caught, leading to an accident. There was a risk.
Furthermore, since the portion of the bolt and nut projecting from the peripheral surface of the tubular column is easily rusted, there is a drawback that pedestrian's clothes are easily rusted.

[0008]

In order to solve this problem, a mounting bolt portion having a forward male screw, a reverse male screw portion having a forward female screw and a reverse male screw to be screwed to the forward male screw, and a reverse male screw are screwed together. A tubular strut mount is characterized in that it has an internal adjuster with a reverse female thread.

[0009] Further, it has a mounting bolt portion having a forward male screw, a reverse male screw portion having a forward female screw and a reverse male screw screwed to the forward male screw, and an internal adjusting portion having a reverse female screw screwed to the reverse male screw, A cylindrical strut mount is characterized in that the surface of the reverse male screw portion on the forward female thread side is spherical, and the surface of the internal adjusting portion opposite to the reverse female screw is spherical.

Further, a mounting bolt portion having a male thread,
It has a reverse male screw part that has a forward female screw and a reverse male screw that are screwed to the forward male screw, and an internal adjusting part that has a reverse female screw that is screwed to the reverse male screw. Then, there is proposed a tubular strut mounting tool characterized by inserting a forward male screw of a mounting bolt portion from the outside of the cylindrical strut through a through hole of the cylindrical strut and screwing it with a forward female screw of a reverse male screw portion.

[0011]

FIG. 1 is a front view of a tubular support fixture according to an embodiment of the present invention, and is a mounting plate-like member using a guard rail fixture as the tubular support fixture according to the embodiment of the present invention. FIG. 2 showing a plane cross-section showing a state in which the guard rail is attached to a guardrail strut having two through holes. Using the guardrail fixture which is also a cylindrical strut fixture, the guardrail is attached to the through hole through the attachment plate. FIG. 3 is a side view showing a side view of a part of the guardrail post attached to one guardrail strut. A perspective view of the guardrail mount attached to the guardrail strut by the guardrail mount, which is the tubular strut mount according to the embodiment of the present invention, is viewed from the sidewalk side. Description will be given based on FIG. 4, which is a diagram.

The tubular support fixture 1 according to the embodiment of the present invention comprises three members, a mounting bolt portion 10, a reverse male screw portion 11 and an internal adjusting portion 12, and has two reverse screws, a forward screw and a reverse screw. Can be connected and separated by screwing.

The tubular support fixture 1 is a hollow cylindrical or square tubular support such as a guardrail support or a fence for a park, and other members such as a guardrail mounting plate or a support. It is a member for mounting. In the embodiment of the tubular strut mount 1, the guardrail mount 1 will be described. Two
Is a card rail support, 3 is a mounting plate, 4 is a guard rail, A is a pedestrian side passage, and B is a roadway side. The mounting plate body 3 is provided between the guardrail support column 2 and the guardrail 4, and is fixed by the guardrail mounting tool 1.

The guardrail support pillar 2 is a hollow cylindrical support pillar, and in the state of standing upright on the road, in the embodiment of FIG. 2, through holes 20 for bolts are opened on both the road side and the sidewalk side. 3 and 4, the insertion hole 20 is opened only on the side of the roadway and there is no through hole on the side of the pedestrian.

Mounting bolt portion 10 of the guardrail fitting 1
Has a bolt head 101 and a forward male screw 100, and is screwed with the forward female screw 111 of the reverse male screw portion 11 by the forward male screw 100. The screw engagement of the forward screws (the forward male screw 100 and the forward female screw 111) is tightened by the right rotation of the screw and loosened by the left rotation.

Reverse male screw portion 11 of the guardrail mounting portion 1
Is provided with a cylindrical portion 113 having a slightly larger diameter on one side.
A forward female screw 111 that opens on one side surface of 13 is provided,
A collar 114 is provided on the peripheral portion of the opening of the forward female screw 111.
The collar 114 is formed in a cylindrical shape that can be inserted into the guardrail column 2 in a substantially close manner, and the height thereof is the same as or lower than the wall thickness of the guardrail column 2 and is about 1 to 3 mm. A reverse male screw 110 having a small diameter is integrally formed continuously with the other side of the cylindrical portion 113 of the reverse male screw portion 11. The reverse male screw portion 11 is formed by using the forward female screw 111 and the forward male screw 100 of the mounting bolt 10.
Screw together. The side end surface 112 of the cylindrical portion 113 of the reverse male screw portion 11 on the opening female screw 111 side is spherical. The curvature of the spherical surface of the side end surface 112 may be the same as or smaller than the curvature of the inner cylindrical inner diameter of the guardrail column 2.

Internal adjustment section 12 of guardrail mounting section 1
Is a columnar shape having an outer diameter of about 30 to 60 mm, a reverse female screw 120 is provided on one side, and a side end surface 121 on the other side is formed as a spherical shape, and the positioning protrusion 12 is formed at the center of the spherical surface.
2 is formed to project. The reverse female screw 120 of the internal adjusting portion 12 is screwed with the reverse male screw 110 of the reverse male screw portion 11. These reverse screws (reverse male screw 110 and reverse female screw 12
Contrary to the forward screw, the screwing of 0) is tightened by left rotation of the screw and loosened by right rotation.

The side end surface 121 of the inner adjusting portion 12 is formed of a spherical portion, and the curvature of the spherical surface of this side end surface 121 may be the same as or smaller than the curvature of the inner cylindrical inner diameter of the guardrail support 2, so that the reverse male screw portion 11 has a curved surface. Side end surface 1 of the cylindrical portion 113
Same as 12. The positioning protrusion 122 protruding in the central portion of the spherical surface is a thin columnar protrusion and has an outer diameter substantially similar to the outer diameter of the male screw of the mounting bolt 50 (conventional example) which has been conventionally used. When the bolt insertion hole of the guardrail support column 2 is provided only on the road side, the positioning projection 122 is attached so that the inner peripheral surface of the guardrail support column 2 presses the inner peripheral surface at a position facing the insertion hole 20. Also, the insertion hole 20
The positioning projection 122 may be inserted for positioning by providing a recess that does not penetrate the inner peripheral surface at the facing position. As another embodiment, the positioning protrusion 122 may not be provided and the side end surface 121 may be formed only by the spherical portion.

Further, when the guardrail support column 2 has the conventional insertion holes 20 shown in FIG. 2 at two places of opposite diameters on the roadside and the sidewalk, the positioning protrusions 122 are closely attached to the sidewalk insertion holes 20. Since the height of the protrusion is not higher than the thickness of the cylindrical wall surface of the guardrail support column 2, the positioning protrusion 122 does not project from the insertion hole 20 of the guardrail support column 2 to the sidewalk side and the through hole 20 is inserted. It can be closed.

Next, the operation of the guardrail mount 1 according to the embodiment of the present invention will be described. Guardrail 4
When attaching to the guardrail column 2, the attachment plate 3 is attached to the guardrail column 2, and the guardrail 4 is attached to the attachment plate 3 with bolts and nuts 30.

Then, the guardrail mount 1 is used to fix the mounting plate 3 to the guardrail column 2.
The guardrail column 2 has a hollow cylindrical shape, and is provided with one insertion hole on the side of the road in the horizontal direction of the peripheral surface or two insertion holes facing each other on the side of the road and the side of the sidewalk. The head of the guardrail column 2 is opened during construction, and the reverse male screw part 11 of the guardrail fixture 1 and the internal adjusting part 12 are screwed into the inside of the guardrail column 2 while the reverse screws are screwed together from this opening. Put in. Reverse male screw part 1 of guardrail fixture 1
The lengths of 1 and the internal adjustment portion 12 can be changed by screwing a reverse screw, and the length is shorter than the inner diameter of the card rail support 2 for insertion.

Next, the opening side of the forward female thread 111 of the reverse male threaded portion 11 is positioned in the insertion hole (road side) 20 of the guardrail strut 2, and the mounting hole of the mounting plate body 3 is set to the guardrail strut 2.
Align with the insertion hole 20 from the outside. At this time, since the flange 114 of the reverse male screw portion 11 of the guardrail fixture 1 is of a size that fits closely into the through hole 20 on the roadway side of the guardrail strut 2, it can be easily fitted inside the guardrail strut 2. You can Further, since the height of the brim 114 is the same as or smaller than the wall thickness of the guardrail column 2, it does not protrude from the peripheral surface of the guardrail column 2. From the outside through the mounting hole and the insertion hole 20, the mounting bolt portion 1
The forward male screw 100 of 0 is inserted and screwed into the forward female screw 11 of the reverse male screw portion 11. Since this screw is a combination of forward screws, it is tightened by rotating it clockwise.

At the time of this rotation, the side surface of the reverse male screw portion 11 on the opening side of the forward female screw 111 is spherical, and the curvature of the spherical surface is the same as or smaller than the curvature of the inner cylindrical inner diameter of the guardrail support column 2. Rotating work is possible even if it touches the peripheral surface.

The mounting plate member 3 is fixed to the outer peripheral surface of the guardrail column 2 by rotating the mounting bolt portion 10 to the right.
Next, by rotating the internal adjusting portion 12 of the guardrail fixture 1 to the right, the reverse internal threads 120 and the reverse male threads 110 of the internal adjusting portion 12 are loosened from each other, and the guardrail fixture 1 inside the guardrail column 2 is loosened. Is growing in length. At this time, the screwing of the mounting bolt portion 10 and the reverse male screw portion 11 is tightened by clockwise rotation, so the screwing of these two members does not loosen. At this time, since the outer diameter of the inner adjusting portion 12 is a thickness that is convenient for the operator to hold and rotate, the inner adjusting portion 12 can be easily rotated by hand. The inner adjusting portion 12 has a cylindrical shape in this embodiment, but as another embodiment, it is also possible to form the outer periphery by a prismatic shape such as a hexagonal shape or an octagonal shape. The prismatic shape of the internal adjusting portion 12 has the effect of facilitating the rotation work by hand.

The length of the guardrail fixture 1 extends inside the guardrail column 2, the positioning protrusions 122 enter the through holes 20 on the sidewalk side to close the through holes 20 as shown in FIG. Since it is closely fitted to the insertion holes 20 facing each other, after installation, the guardrail fitting 1
However, it prevents them from moving or falling. If the guardrail fixture 1 has the positioning protrusions 122 as described above, even if the guardrail support post 2 used is a tubular support post having two through-holes as shown in FIG.
It can be used correspondingly.

Even when the guardrail column 2 does not have the through hole 20 on the sidewalk side as shown in FIGS. 3 and 4, the guardrail fixture 1 extends in length inside the guardrail column 2 and the positioning projection 122 is formed. As shown in FIG. 3, the inner peripheral surface of the guardrail column 2 is pressed from the inside. By this right rotation, the guardrail mounting tool 1 extends inside the guardrail strut 2, and by this expansion, the guardrail mounting tool 1 is stably fixed inside the guardrail strut 2 and the mounting plate 3
Is also fixed.

Further, when the inner adjusting portion 12 is rotated, the side surface 121 having the positioning projection 122 is formed of a spherical portion, and the curvature of the spherical surface of this side surface 121 is the same as or smaller than the curvature of the inner cylindrical inner diameter of the guardrail support 2. Therefore, the rotating work can be performed even if the inner surface of the guardrail column 2 is contacted.

After mounting the guardrail mount 1, the guardrail column 2 closes its head with a hemispherical portion or the like.

In another embodiment, the cylindrical column 2 can be used in the same manner even when it is a rectangular column column such as a square column. When the cylindrical support 2 is a square support, it can be used even if the opening side of the reverse female screw of the reverse male screw part and the side end surface of the internal adjusting part are formed in a flat shape.

[0030]

According to the present invention, there is no one protruding from one side of the peripheral surface of the cylindrical support such as the guardrail support,
Since the circumference of the pillar remains smooth, the pedestrian side of the guardrail pillar and the pedestrian side of the park fence will be caught by pedestrians' skirts, slacks, baggage, etc. Since there is no danger of a pedestrian striking the tubular support, the pedestrian walking in the vicinity of the cylindrical support can feel more secure and improve safety. Furthermore,
Even for a traveling object such as a bicycle, the protrusion does not protrude from the cylindrical support, which has the effect of improving traveling safety.

Further, at the time of mounting, since the reverse screw works by rotating the internal adjusting portion inside, the adjustment inside the hollow cylinder can be easily carried out manually by the worker, and there is no mounting hand tool. It is possible to attach it together.

Furthermore, since the opening side of the forward female screw of the reverse male screw part and the side end surface of the internal adjusting part are spherical, the cylindrical column can be rotated even if it is cylindrical or in contact with the inner peripheral surface of the cylindrical column. There is an effect that work is possible.

[Brief description of drawings]

FIG. 1 is a front view of a tubular support fixture according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a through hole formed in a mounting plate member using a guard rail mounting member which is a cylindrical column mounting member according to an embodiment of the present invention.
Plane cross-sectional view showing a state where it is attached to the existing guardrail support

FIG. 3 is a partially cutaway side view showing a state in which a guardrail mounting tool which is also a cylindrical pillar mounting tool is used and the guardrail is mounted to one guardrail supporting pillar with a through hole through a mounting plate.

FIG. 4 is a perspective view seen from the sidewalk side showing a state in which the guardrail is attached to the guardrail column by the guardrail attachment that is the tubular column attachment of the embodiment of the present invention.

FIG. 5 is a perspective view showing a state in which a guardrail is attached to a guardrail strut by a guardrail attachment, which is a conventional example and is a conventional bolt nut, as seen from the sidewalk side.

FIG. 6 is a plan sectional view showing a state in which a guardrail is attached to a guardrail column by a conventional boltnut guardrail attachment.

[Explanation of symbols]

1 Cylindrical support fixture (guardrail fixture) 10 Mounting bolt part 100 forward male screw 101 bolt head 11 Reverse male thread 110 Reverse male screw 111 forward female thread 112 side end face (spherical part) 113 column 114 brim 12 Internal adjustment 120 reverse female screw 121 End face (spherical part) 122 Positioning protrusion 2 Cylindrical columns (guardrail columns) 20 through holes 3 Mounting plate 30 bolt nuts 4 guardrails A sidewalk side B driveway side

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Ichiro Nakamura             1-21-3 Isobe, Mihama-ku, Chiba City, Chiba Prefecture F-term (reference) 2D101 CA06 CB07 EA02 FA11 FA22                       FB14                 2E142 AA01 DD12 EE01 HH12 HH22                       JJ06

Claims (3)

[Claims] 1. A mounting bolt portion having a forward male screw, a reverse male screw portion having a forward female screw and a reverse male screw that are screwed to the forward male screw, and an internal adjusting portion having a reverse female screw that is screwed to the reverse male screw. Characteristic tubular support fixture. 2. A mounting bolt portion having a forward male screw, a reverse male screw portion having a forward female screw and a reverse male screw that are screwed to the forward male screw, and an internal adjusting portion having a reverse female screw that is screwed to the reverse male screw, A cylindrical strut mounting fixture, wherein a surface of the reverse male screw portion on the forward female screw side is spherical, and a surface of the internal adjusting portion opposite to the reverse female screw is spherical. 3. A mounting bolt part having a forward male screw, a reverse male screw part having a forward female screw and a reverse male screw screwed to the forward male screw, and an internal adjusting part having a reverse female screw screwed to the reverse male screw, Insert the reverse male screw part and the internal adjustment part inside the cylindrical strut, and insert the forward male screw of the mounting bolt part from the outside of the cylindrical strut through the through hole of the cylindrical strut to screw it into the forward female screw of the reverse male screw part. Characteristic tubular support fixture.