JP5486875B2 - Guard fence for road, support structure of column and beam pipe, and nut holding member - Google Patents

Description

  In the present invention, a beam pipe is bolted via a bracket attached to the side of a column built on the ground at a distance along the longitudinal direction of the road, and the bolt coupling for mounting the beam pipe to the column is attached to the bracket or beam pipe. The present invention relates to a road guard fence and a support structure for a road and a pipe pipe, and a nut holding member, which are performed using a nut held by a nut holding member inserted into the hollow portion of the road, and have high designability and landscape, and safety.

Conventionally, the so-called "center beam type" road protection in which the beam pipe is bolted on the same line as the column via a bracket attached to the side of the column built on the ground with a space along the length of the road. For example, the structures illustrated in FIGS. 14 to 19 are known as the joining structure of the fence support and the beam pipe.
The center beam type road guard fence is provided with brackets 14 on both left and right side surfaces (including one side surface) of a column 13 (including an end column 13 ′) that is built on the ground with a space along the longitudinal direction of the road. The beam pipe 15 is attached to both side surfaces of the column 13 by a series of bolts using the bracket 14.

  As shown in FIGS. 16 to 19, the bracket 14 of the illustrated example has a cylindrical portion whose outer diameter is larger than that of the beam pipe 15 and has a U-shaped cross-sectional shape having an opening below which the beam pipe 15 can be fitted. 140 is formed (see FIG. 19), and pipe joint bolt holes 14a and 14a through which a single bolt passes are arranged in the substantially central portions of the left and right vertical surfaces 141 and 141 of the cylindrical portion 140, respectively. Is provided. The side surface 142 to be joined to the column has a concave shape with the same curvature as that of the column 13, and a column joining bolt hole 14 b to be bolted to the column 13 is provided at the center.

The two brackets 14 and 14 configured as described above are applied to both side surfaces of the support column 13, and the support joint bolt holes 14b on the side surfaces 142 of both brackets 14 and the through holes 13a provided on the side surfaces of the support column 13 are respectively matched. On the other hand, the bolt 16 is inserted from the column connection bolt hole 14b of the bracket 14 (right side), passed through the through hole 13a of the column 13 and the column connection bolt hole 14b of the other bracket 14, and the nut 17 is screwed in and tightened. The brackets 14 and 14 are attached to the left and right side surfaces of the column 13 (see FIG. 16).
Then, the left and right beam pipes 15 and 15 are inserted from the openings opened below the brackets 14 and 14 attached to the support pillars 13, and the bolt through holes 15 a provided in the beam pipes 15 and the pipe joints provided in the brackets 14 are connected. The bolt holes 14a, 14a are aligned with each other and are inserted horizontally from the left side surface of the bracket 14 (see FIG. 18) so as to penetrate the through holes 15a of the beam pipe 15 and the bolt holes 14a of the bracket 14. to 18, and fastened strongly screwed nuts 19 from the right side of the bracket 14, attached to struts 13 of the left and right of the beam pipe 15, 15 is being performed.

  Accordingly, the heads of the bolts 18 and 18 and the nuts 19 and 19 are exposed on both side surfaces of the bracket 14 as shown in FIGS. Furthermore, since the bracket 14 is fastened in a state where it is placed on the upper surface of the beam pipe 15, a step 20 is generated at the joint between the beam pipe 15 and the bracket 14. Therefore, it looks bad from a passerby or a driver of the vehicle, and there is a concern that the nut 19 and the step 20 exposed on the side surface of the bracket may catch clothes and bags of a person who passes near the beam pipe 15.

  The structure for bolting the beam pipe 15 via the bracket 14 attached to one side surface of the end column 13 'is substantially the same as the one side portion of the column described above, but will not be described here. Similarly, the step 20 is generated, and the bolt 18 and the nut 19 are exposed. In particular, the end column 13 'has a problem that passers-by easily catches clothes and bags.

  Similarly, a center beam type road guard fence in which a bracket is attached to a side surface of a support and a beam pipe is attached to the support using the bracket is also disclosed in, for example, Patent Document 1 or 2. The outline of the joining structure is substantially the same as that shown in FIGS. 16 to 19 except that the shape of the bracket is a pipe material. That is, since the beam pipe is inserted and fitted into the hollow portion of the bracket attached to the side surface of the support column, a step is generated at the joint between the bracket and the beam pipe. Further, the beam pipes are joined to each other by passing a bolt penetrating the bracket vertically downward and fastening a nut from below. Therefore, these protective fences also look bad because the bolt heads and nuts are exposed on the upper and lower surfaces of the bracket, and the exposed nuts and steps cannot wipe away the concern of catching clothes and bags of people who pass near the beam pipe. .

JP-A-7-82716 Japanese Utility Model Publication No. 7-6428

   As shown in FIGS. 14 to 19 as the prior art, the joint structure between the support column and the beam pipe and the protective fences disclosed in the above-mentioned Patent Documents 1 and 2 are individually attached to the beam pipe using individual brackets. And mounting to the column. However, in any conventional technique, a level difference is produced at the joint between the bracket and the beam pipe, and a plurality of nuts are exposed on the upper and lower surfaces of the bracket. It is common in that there are concerns about traps, and improvements are required.

The object of the present invention is to improve the joint structure between the bracket and the pillar and the joint structure between the bracket and the beam pipe in the center beam type road guard fence that bolts the beam pipe through the bracket attached to the side surface of the pillar. A road that does not expose bolt holes, nuts and protrusions such as steps on the upper surface of the bracket, and has excellent design and landscape, and there is no risk of catching clothes and heels of people who pass nearby to the beam pipe. An object of the present invention is to provide a protective fence, a connecting structure between a support and a beam pipe, and a nut holding member.
The next object of the present invention is to perform the bolt joint for attaching the bracket to the side surface of the column and the bolt joint for attaching the beam pipe to the bracket, using the nut of the nut holding member inserted into the hollow portion from the end of the bracket. Another object of the present invention is to provide a protective fence for roads, a structure for joining a column and a beam pipe, and a nut holding member.

As a means for solving the above-mentioned problem, a structure for joining a column and a beam pipe according to the invention described in claim 1 is:
It is a joining structure of a strut and a beam pipe that is bolted using a nut held by a nut holding member that is inserted into the hollow portion of the bracket on the side of the strut,
The support column is provided with a through-hole for bolting the bracket,
The bracket is a pipe member having an outer peripheral surface and a side surface to be joined to the support column, and a pipe connection bolt hole for bolting to the beam pipe is provided on the outer peripheral surface, and the support member and the bolt connection are provided on the side surface. There are bolt holes for joining the columns to be
In the vicinity of the end of the beam pipe, a bolt hole is provided at a position that coincides with a pipe connecting bolt hole provided in the bracket,
The nut holding member includes an outer peripheral surface and a side surface, and is configured to have a shape in which movement in each direction orthogonal to the pipe axis of the bracket is restricted, and each bolt hole provided on the outer peripheral surface and the side surface of the bracket, A nut fitting portion that holds the nut in a non-rotating state is provided at a matching position, and the nut is held by the nut fitting portion.

The invention according to claim 2 is the junction structure of the support column and the beam pipe according to claim 1,
The nut holding member to be inserted into the hollow portion of the bracket has a nut fitting portion that holds the nut used for bolting with the beam pipe on the outer peripheral surface in a non-rotating state, and the nut used for bolting with the support on the side surface And a nut fitting portion that holds the nut in a non-rotating state, and each of the nut fitting portions is disposed at a position that coincides with the pipe joining bolt hole and the column joining bolt hole of the bracket.

The invention according to claim 3 is the joining structure of the support column and the beam pipe according to claim 1 or 2, wherein the nut fitting portion of the nut holding member is formed to be slightly larger than the outer diameter of the nut and is fitted into the nut fitting portion. The nut is held loosely enough not to rotate in the nut fitting portion.

The invention according to claim 4 is the joining structure of the column and the beam pipe according to any one of claims 1 to 3,
The nut fitting portion of the nut holding member includes a locking portion that prevents the nut from being detached.

Invention of Claim 5 is in the junction structure of the support | pillar and beam pipe as described in any one of Claims 1-4,
The nut holding member is formed of a synthetic resin.
The invention according to claim 6 is a structure in which the support column and the beam pipe according to any one of claims 1 to 5 are joined.
The nut fitting portion of the nut holding member is characterized in that a nut insertion portion is formed in which a part of the opening is cut out so that the nut can be slid sideways and fitted.

The invention according to claim 7 is the junction structure of the support column and the beam pipe according to any one of claims 1 to 6,
The bolt that joins the beam pipe and the bracket has a flat head, and is inserted upward or obliquely upward from the outer bottom of the beam pipe and is screwed into the nut of the nut holding member. .

The road fence according to the invention described in claim 8 is:
A bracket is bolted to the side of the column that is built on the ground with a gap along the road, and the bracket and the beam pipe are bolted, and each bolt joint is inserted into a hollow portion of the bracket. A road guard fence made by a held nut,
The support column is provided with a through-hole for bolting the bracket,
The bracket is a pipe member having an outer peripheral surface and a side surface to be joined to the support column, and a pipe connection bolt hole for bolting to the beam pipe is provided on the outer peripheral surface, and the support member and the bolt connection are provided on the side surface. There are bolt holes for joining the columns to be
In the vicinity of the end of the beam pipe, a bolt hole is provided at a position that coincides with a pipe connecting bolt hole provided in the bracket,
The nut holding member includes an outer peripheral surface and a side surface, and is configured to have a shape in which movement in each direction orthogonal to the pipe axis of the bracket is restricted, and each bolt hole provided on the outer peripheral surface and the side surface of the bracket, A nut fitting portion that holds the nut in a non-rotating state is provided at a matching position, and the nut is held by the nut fitting portion.

The invention according to claim 9 is the road fence according to claim 8,
One bracket of the bracket attached to the left and right sides of the column is positioned by fitting a nut holding member into the hollow part from the end, and the same bracket is placed on one side of the column to join the column Bolt holes for use and the through holes provided in the columns are made to coincide, the other bracket is applied to the other side surface of the column, the bolt holes for joining the columns of the other bracket and the through holes on the other side surface of the column And a nut holding member that is positioned in the same bracket by inserting a bolt from the bolt hole for joining the pillar of the other bracket, passing it through the through hole of the pillar and the bolt hole for joining the pillar of one bracket The left and right brackets are screwed into the nut held on the side of the bracket, and the left and right brackets are attached to both sides of the column, and the nut holding part from the end into the hollow part of the other bracket It has been fitted,
The hollow part of the beam pipe is inserted into the outer periphery of each bracket attached to the left and right side surfaces of the support column, and the bolt hole provided in the beam pipe is aligned with the pipe joint bolt hole of each bracket, A bolt having a flat head formed from a bolt hole located at the outer bottom of the beam pipe is inserted upward or obliquely upward, and the nut holding member positioned in the bracket is screwed and joined to the held nut. Features.

The nut holding member according to the invention described in claim 10 is:
A nut holding member used by being inserted into a hollow portion of a pipe material,
The nut holding member is provided with an outer peripheral surface and the side surface is shaped to move in each direction perpendicular to the tube axis of the tubular member is restricted, the nuts on the detent state on the outer peripheral surface and a side surface nut insertion portion holding is characterized Tei Rukoto provided.
The invention according to claim 11 is the nut holding member according to claim 10,
The nut fitting portion of the nut holding member is formed slightly larger than the outer diameter of the nut, and the nut fitted into the nut fitting portion is held loosely to the extent that it does not rotate in the nut fitting portion. And

The invention according to claim 12 is the nut holding member according to any one of claims 10 or 11,
The nut fitting portion of the nut holding member includes a locking portion that prevents the nut from being detached.

The invention according to claim 13 is the nut holding member according to any one of claims 10 to 12,
The nut holding member is formed of a synthetic resin.

The invention according to claim 14 is the nut holding member according to any one of claims 10 to 13,
The nut fitting portion of the nut holding member is characterized in that a nut insertion portion is formed in which a part of the opening is cut out so that the nut can be slid sideways and fitted.

  The road guard fence and the support structure of the beam and the pipe pipe according to claims 1 to 9 are provided with a through hole for connecting the bracket to the support pillar, and the bracket attached to the side surface of the support pillar has a beam pipe and a bolt on its outer peripheral surface. A pipe joint bolt hole for joining is provided, and a pillar joint bolt hole for bolt joining to the support pillar is provided on the side surface to be joined to the support pillar, and the beam pipe is provided in the bracket in the vicinity of the end thereof. The bolt hole is provided at a position coinciding with the pipe joint bolt hole. Further, the nut holding member inserted into the hollow portion of the bracket has a shape in which movement in each direction orthogonal to the tube axis of the bracket is restricted, and each of the nut holding members provided on the outer peripheral surface and the side surface of the bracket. The nut fitting portion that holds the nut in a non-rotating state is provided at a position that coincides with the bolt hole, and the nut is held in the nut fitting portion.

And the road guard fence which joins the support | pillar and beam pipe of the said structure is constructed | assembled in the following ways.
One bracket of the bracket attached to the left and right sides of the column is positioned by fitting a nut holding member into the hollow part from the end, and the same bracket is placed on one side of the column to join the column The bolt hole for use and the through hole of the support are matched. With the other bracket attached to the other side of the column, the bolt is inserted from the column bonding bolt hole of the other bracket with the column bonding bolt hole of the other bracket and the through hole of the column aligned. Are inserted into the through holes of the bracket and the bolt holes for connecting the pillars of one of the brackets, and screwed into the nuts of the nut holding members positioned in the same bracket and joined to the pillars. At this stage, the bolts for attaching the left and right brackets to the support are completely housed in the brackets and are hidden from the outside and cannot be seen.

  Next, the bolt joint for attaching the beam pipe to the bracket is inserted into the hollow portions of the left and right beam pipes on the outer circumferences of both brackets attached to the left and right side surfaces of the column, respectively, and the bolt holes provided in the beam pipe, Align the pipe joint bolt hole of the bracket with the bolt, insert the bolt from the pillar joint bolt hole of the other bracket, pass through the through hole of the pillar and the pillar joint bolt hole of one bracket, and position in the bracket Further, it can be done by screwing and fastening to the nut held by the nut holding member. Further, the bolt for attaching the beam pipe to the bracket has a flat top, and the bolt is screwed upward from the lower surface of the roadway so as not to protrude from the upper and lower surfaces of the bracket.

  With the above configuration, the bracket is completely housed in the hollow portion of the beam pipe, so that there is no step between the beam pipe and the joint portion of the bracket, and the flat beam pipe can be connected in series. However, even when viewed from the roadway side, the exposure of the bolt heads and nuts is reduced as much as possible, making it difficult to enter the field of view, and excellent visual design and landscape. As well as the protrusions that are easy to be injured by passers-by on the top side of the beam pipe, it is safe to avoid the possibility of catching clothes and heels of people who touch the beam pipe. High strut and beam pipe joint structure and road guard fence can be realized.

  The invention described in claims 10 to 14 is a nut holding member used for a bolt joint for attaching the bracket to the support column and a bolt joint for attaching the beam pipe to the bracket. The nut holding member is attached to a pipe shaft of a pipe material such as a bracket. Since the movement in the directions orthogonal to each other is restricted, the positioning operation for aligning the nut of the nut holding member with the position of the bolt hole for joining the column in the bracket is easy. Moreover, since the nut of the nut holding member is held in a non-rotating state and has a locking portion that prevents the nut from falling off, the bolt inserted from the bolt hole of the beam pipe is screwed into the nut of the nut holding member and joined. The work to be performed can be performed easily and quickly, and the construction work of the road fence can be performed in a short period of time with high quality.

It is the elevation which showed the guard fence for roads where a beam pipe is attached to the support | pillar with which this invention is implemented. It is the top view to which the II-II arrow of FIG. 1 expanded. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. It is the side view to which the IV-IV arrow of FIG. 3 expanded. It is the explanatory perspective view which decomposed | disassembled the support | pillar which comprises the guard fence for roads by this invention, a beam pipe, a bracket, and a nut holding member, and showed it by the related arrangement | positioning. It is a detailed perspective view of a nut holding member. It is a top view of a nut holding member. It is a VV arrow sectional view of Drawing 7. It is a detailed perspective view of another nut holding member. FIG. 10 is a plan view of the nut holding member of FIG. 9. It is VI-VI arrow sectional drawing of FIG. It is a perspective view which shows the different form of the nut holding member of FIG. It is the perspective view for description which disassembled the end part support | pillar which comprises the guard fence for roads shown in Example 2, a beam pipe, a bracket, and a nut holding member, and showed it by the related arrangement | positioning. It is the elevation which illustrated the conventional protective fence for roads. It is a side view of FIG. It is the top view to which the VII-VII arrow of FIG. 14 was expanded. It is the front view which expanded the support | pillar part of FIG. FIG. 16 is an enlarged side view of FIG. 15. It is a reference perspective view which shows the structure of the conventional bracket.

The beam pipe 3 is inserted into the hollow portion of the bracket 2 on the side surface of the support column 1 and the nut holding members 4 and 5 hold the nuts 6 and 9, and the support structure and the beam pipe are joined by bolts.
The support column 1 is provided with a through hole 1 a for bolting the bracket 2.
The bracket 2 is a pipe member having an outer peripheral surface and a side surface to be joined to the support column, and a pipe joint bolt hole 2a for bolting the beam pipe 3 to the outer peripheral surface is provided on the side surface. A post-joining bolt hole 2b for bolting the post is provided.
In the vicinity of the end of the beam pipe 3, a bolt hole 3 a is provided at a position coinciding with the pipe connecting bolt hole 2 a provided in the bracket 2.
The nut holding members 4, 5 are provided with outer peripheral surfaces and side surfaces, are shaped to restrict movement in each direction perpendicular to the tube axis of the bracket 2, and are provided on the outer peripheral surfaces and side surfaces of the bracket 2. Nut fitting portions 41, 42, 51 for holding the nut in a non-rotating state at positions corresponding to the pipe joint bolt holes 2 a and the column connection bolt holes 2 b, and the nut fitting portions 41, 42, 51 have nuts 6, 7, and 9 are held.
In addition, the above-mentioned “movement is restricted” means that movement in each direction orthogonal to the tube axis of the bracket 2 is restricted, but there is a backlash necessary for insertion into the hollow portion of the bracket 2. Is an acceptable meaning.

The road guard fence formed by joining the strut and beam pipe with the above structure
The one bracket 2R is positioned by fitting the nut holding member 4 into the hollow portion from the end thereof, the same bracket 2R is applied to one side surface of the column 1, and the column joining bolt of the bracket 2R. The hole 2b and the through hole 1a provided in the column 1 are made to coincide with each other, the other bracket 2L is applied to the other side surface of the column 1, and the column connecting bolt hole 2b of the bracket 2L and the other side surface of the column 1 are arranged. Align the through hole 1a, insert the bolt 8 from the post connection bolt hole 2b of the other bracket 2L, pass through the through hole 1a of the post 1 and the post connection bolt hole 2b of the one bracket 2R, the same direction The brackets 2 </ b> R and 2 </ b> L are attached to both side surfaces of the column 1 by screwing into the nut 7 of the nut holding member 4 positioned on the bracket 2. Then, the nut holding member 5 is fitted into the hollow portion of the other bracket 2L from the end portion.

  The hollow portions of the beam pipes 3R and 3L are inserted into the outer circumferences of the brackets 2R and 2L attached to both side surfaces of the support column 1, respectively, and bolt holes 3a and 3a provided in the beam pipes 3R and 3L, and the brackets 2R. 2L pipe joint bolt holes 2a, 2a are aligned with each other, and a bolt 10 having a flat head formed from the bolt hole 3a located at the lower outside of the beam pipes 3R, 3L is inserted in an upward or obliquely upward direction, It is constructed by screwing and joining the nuts 6 and 9 held by the nut holding members 4 and 5 positioned in the brackets 2R and 2L.

  The nut holding member 4 inserted into the hollow portion of the one bracket 2R attached to one side surface of the column has a nut fitting portion 41 that holds the nut 6 for bolting with the beam pipe 3 on the outer peripheral surface portion in a non-rotating state. And a nut fitting portion 42 for holding the nut 7 for bolting with the support column 1 in a non-rotating state, and holding the nuts 6 and 7 on the nut fitting portions 41 and 42, respectively. The configuration.

Further, the nut-holding member 5 is inserted into the hollow portion of the bracket 2L other hand, is a short form, the nut insertion portion for holding the nut 9 to be subjected to bolted connection between the beam pipe 3 only on the outer peripheral surface portion in the detent state 51. The nut 9 is held in the nut fitting portion 51.
The nut holding members 4 and 5 are preferably made of synthetic resin.

Hereinafter, the present invention will be described based on illustrated embodiments.
As shown in FIGS. 1 to 5, the road fence according to the present invention has a beam pipe 3 connected via a bracket 2 attached to a side surface of a column 1 that is built on the ground with a space in the longitudinal direction along the road. This is a so-called center beam type structure that is bolted and attached to the column 1.
In this embodiment, in particular, left and right brackets 2R and 2L are attached to both side surfaces of an intermediate column 1 (hereinafter simply referred to as column 1) located at the middle part of the length of the beam pipe 3, and the left and right brackets 2R and 2L are attached. It is preferably implemented in a bolt joint structure for attaching the left and right beam pipes 3R, 3L.

As the joining structure of the present invention, the support column 1 is provided with a through hole 1a for joining the bracket as shown in FIG.
As shown in FIGS. 2 to 5, the brackets 2 </ b> R and 2 </ b> L that are attached to both side surfaces of the support column 1 are cylindrical pipe materials that have a smaller diameter than the beam pipe 3 and a length of about 70 mm. The outer peripheral surface is provided with a pipe joint bolt hole 2a for use in bolt joint with the beam pipe 3. At the center position of the side surface connected to one side surface of the column 1, a column hole 2 b for column connection with the column 1 is provided. The shape of the column 1 is curved inwardly with the same curvature as the column 1. Thus, it is formed so as to be in close contact with the column 1.

  The beam pipes 3R and 3L mounted on the same line through the brackets 2R and 2L on the left and right side surfaces of the support column 1 are positioned near the ends of the beam pipes 3R and 3L. A bolt hole 3a is provided at a position coinciding with the pipe joint bolt hole 2a. Incidentally, the bolt hole 2a for joining the pipe 2 of the bracket 2 and the bolt hole 3a of the beam pipe 3 are provided in an arrangement in which each bolt hole comes to the lower side when attached to the column 1 as shown in FIGS. ing.

Next, the structure and joining structure of the nut holding members 4 and 5 fitted into the hollow portion of the bracket 2 will be described.
There are two types of nut holding members 4 and 5 used in this embodiment.
First, the structure of the nut holding member 4 to be inserted into the hollow portion of the bracket 2R attached to the right side surface of the column 1 shown in FIG. 5 will be described with reference to FIGS.
The nut holding member 4 is formed as a solid rod-like body having an outer diameter that can be closely fitted into the hollow portion of the bracket 2, and moves in each direction orthogonal to the tube axis of the bracket 2. Is limited. Specifically, although the shape in contact with the inner peripheral surface of the beam pipe is shown, the shape may have a backlash that does not drop out.
The nut holding member 4 has a structure including an outer peripheral surface and a side surface. In the outer peripheral surface portion, a nut fitting portion 41 that restrains the nut 6 in a non-rotating state at a position that coincides with the pipe joint bolt hole 2a of the bracket 2 serves as a through hole in the diameter line direction, and the nut 6 It is formed in a hexagonal hole shape constrained to a non-rotating state. Further, a nut fitting portion 42 that restrains the nut 7 in a non-rotating state at a position coinciding with the column connecting bolt hole 2b of the bracket 2 is formed as a through hole in the axial direction on the side surface unit connected to the column 1 as a hexagonal hole. It is formed into a shape. The reason why the nut fitting portions 41 and 42 are provided in the through configuration is to reduce the manufacturing cost by reducing the amount of material used for the molded member 40 and reducing the weight. Moreover, if the nut to be used is polygonal shapes other than a hexagon, the shape of a nut fitting part shall also be a shape corresponding to the same shape.

  In the nut fitting portions 41 and 42, receiving seats 41a and 42a of the nuts 6 and 7 are provided in a vertical step shape at a certain depth from the outer peripheral surface. Accordingly, the nuts 6 and 7 inserted into the nut fitting portions 41 and 42 are supported in a non-rotating state in which a bottom surface sits on the receiving seats 41a and 42a and does not rotate when bolts are joined. As a means for preventing the rotation, the hexagonal holes of the nut fitting portions 41 and 42 are slightly larger in diameter than the nuts 6 and 7 and are formed in a size sufficient to hold the rotation-prevented state. For this reason, the nuts 6 and 7 whose bottom surfaces are seated on the receiving seats 41a and 42a are held with a margin of wobbling in the range of the clearance from the hexagonal holes. In order to prevent inconvenience that the nuts 6 and 7 inserted into the nut fitting portions 41 and 42 are inadvertently floated and come off the nut fitting portions 41 and 42. Locking portions 41b and 42b for pressing the upper surface of the cover 7 are provided as follows.

In short, as shown in FIGS. 6 and 7, the locking portions 41 b and 42 b are formed at the central portion of one side of the hexagon at substantially the same height as the opening surfaces of the nut fitting portions 41 and 42. It is provided with the structure which shape | molded material in the shape which can be elastically deformed. That is, when the nuts 6 and 7 are inserted into the nut fitting portions 41 and 42 by pushing the locking portions 41 b and 42 b of the elastically deformable shapes of the nut fitting portions 41 and 42 into the nut fitting portions 41 and 42, 41 b and 42 b work and stop, and the nuts 6 and 7 are prevented from inadvertently rising and coming off. However, the used nuts 6 and 7 can be easily removed and collected by slightly pushing the locking portions 41 b and 42 b .
In short, the nut holding member 4 is arranged in a manner corresponding to the arrangement of the pipe joint bolt holes 2a and the column joint bolt holes 2b (FIG. 5) provided in advance in the bracket 2 in the tube axis direction and the circumferential direction. 6 and 7 is configured mainly with a molded member 40 having a length and an outer diameter that can hold the members 7 and 7 firmly.

Next, the structure of the nut holding member 5 to be inserted into the hollow portion of the bracket 2L attached to the left side surface of the column 1 in FIG. 5 will be described with reference to FIGS.
The configuration of the nut holding member 5 is substantially the same as that of the nut holding member 4 described above, and only the differences will be described below.
That is, it is formed in a shorter shape than the nut holding member 4. This is because, as will be described later, as shown in FIGS. 2 and 3, the head 8a of the bolt 8 to which the support column 1 and the left and right brackets 2R and 2L are attached does not contact with each other.
A nut fitting portion 51 that restrains the nut 9 in a non-rotating state is formed as a through hole in the diameter line direction at a position coinciding with the pipe joint bolt hole 2a of the bracket 2L, and the nut 9 It is formed in a hexagonal hole shape constrained to a non-rotating state. Since this nut holding member 5 is not used for joining to the support column 1, a nut fitting portion is not provided on the side surface portion. In the illustrated example, only one nut fitting portion 51 is provided on the outer peripheral surface portion. However, the present invention is not limited to this, and a plurality of the nut fitting portions 51 can be provided as appropriate.
Further, the receiving seat 51a and the locking portion 51b are also configured in such a manner that the molding member 50 having an outer diameter provided at the same position and configuration as the nut holding member 4 is mainly used.
An example of stealing the nut holding member 5 is shown in FIG. The nut holding member 4 is also appropriately stealed in the same manner as the nut holding member 5. In other words, any form of stealing may be used as long as the shape restricts movement of a pipe member such as a bracket in each direction orthogonal to the pipe axis. Therefore, the shapes of the nut holding member 4 and the nut holding member 5 are not uniformly determined because various shapes are conceivable due to meat stealing appropriately performed.

The molded members 40, 50 of the present embodiment are suitable for mass production, can be manufactured lightly at low cost, and are easy to handle so that they are easy to handle, such as thermosetting or thermoplastic synthetic resins, such as phenol resins, epoxy resins, melamine resins, It can be molded using unsaturated polyester resin, polyurethane resin or the like. In addition, it is also preferable to carry out by molding with low / medium foam or high foam polystyrene resin or polypropylene resin. It can be implemented as a non-foamed synthetic resin, or can be fabricated and implemented as a wooden or metal product.
The shape of the nut holding members 4 and 5 is not limited to this, and although not shown in the drawings, the nut fitting portions 41, 42, and 51 are open so that the nuts 6, 7, and 9 can be slid and fitted. It is also preferable to carry out by forming a nut insertion part in which a part of the part is cut out.

Next, the brackets 2R and 2L are bolted to both side surfaces of the support column 1 using the nut holding members 4 and 5 holding the nuts 6, 7 and 9 in the nut fitting portions 41, 42 and 51 having the above-described configuration. The road fence constructed in this way will be described with reference to FIGS.
In particular, as shown in FIG. 5, first, the nut holding member 4 is inserted into the hollow portion of the bracket 2 </ b> R attached to the right side surface of the column 1, and the pipe joint bolt hole 2 a of the bracket 2 </ b> R and the nut of the nut holding member 4 are inserted. Positioning is performed by matching the position of the nut 6 held by the fitting portion 41 and the position of the nut 7 held by the nut fitting portion 42 of the nut holding member 4 with the column connecting bolt hole 2b of the bracket 2R. ing.
The bracket 2R in which the nut holding member 4 is positioned is applied to the right side surface of the column 1 so that the column joining bolt hole 2b of the bracket 2R and the through hole 1a of the column 1 are aligned.

The left bracket 2L is attached to the left side surface of the column 1, the column joining bolt hole 2b of the bracket 2L and the through hole 1a of the column 1 are aligned, and the bolt 8 is inserted from the column joining bolt hole 2b of the bracket 2L. Then, it passes through the through-hole 1a of the support column 1 and the support-joining bolt hole 2b of the bracket 2R, and is screwed into the nut 7 held by the nut holding member 4 inserted into the hollow portion of the bracket 2R. Attach brackets 2R and 2L to the left and right side surfaces of 1.
Thereafter, a short nut holding member 5 provided with a nut fitting portion only on the outer peripheral surface is inserted into the hollow portion of the left bracket 2L, and the nut held by the pipe joint bolt hole 2a and the nut fitting portion 51 of the bracket 2L. 9 is aligned with the position of 9 and fitted.

As described above, the outer circumferences of the brackets 2R and 2L attached to the left and right side surfaces of the support column 1 are inserted so as to fit in the hollow portions of the left and right beam pipes 3R and 3L, respectively. The bolt holes 2a, 2a for use and the bolt holes 3a, 3a of the beam pipes 3R, 3L are positioned so as to coincide with each other. In short, since the brackets 2R and 2L are completely accommodated in the hollow portions of the beam pipes 3R and 3L, there is no projection such as a step in the joint between the beam pipe 3 and the bracket 2, and the flat beam The pipe 3 can be connected in series, and there is an advantage that a visually simple and smart design feeling can be realized. Incidentally, at this time, all the bolt holes are arranged below the beam pipe 3.
In the state of being arranged as described above, the bolts 10 and 10 are inserted in the upward direction from the bolt holes 3a and 3a located at the lower outer portions of the beam pipes 3R and 3L, and the nut holding member 4 is positioned in advance in the hollow portions of the brackets 2R and 2L. 5 are screwed into the nuts 6 and 9 held by the shaft 5, and the beam pipes 3 </ b> R and 3 </ b> L are joined to the left and right side surfaces of the column 1 on the same line to complete a center beam type road guard fence.

  The bolt 10 has a flat top and a thin head, and is screwed upward from the outer lower surface side of the roadway (see FIGS. 3 and 4). Therefore, even when viewed from the outside of the sidewalk or from the roadway side, the exposure of the head and nut of the bolt 10 is reduced as much as possible, making it difficult to enter the field of view, and excellent visual design and landscape. In addition, since the projections on the upper and side surfaces of the beam pipes 3R and 3L are eliminated as much as possible, there is no fear of catching clothes or heels of people who touch the beam pipe 3 and safety. A high road fence can be realized.

The present invention is not limited to the joining structure in which the brackets 2R, 2L and the beam pipes 3R, 3L are bolted to the left and right side surfaces of the central support column 1 located at the center of the road guard fence shown in the first embodiment, In the case where the bracket 2 is attached to one side surface of the end column 1 'standing upright at the end of the road fence shown in FIG. 1 and the beam pipe 3 from one side is bolted, substantially the same technical. It can be implemented based on thought.
The second embodiment is basically the same as the configuration on the right side of FIG. 5 described in the first embodiment, and the specific configuration will be described with reference to FIG.
Since the nut holding member 4 used here has the same configuration as that shown in FIGS. 6 to 8, the description of the nut holding member 4 is omitted.

That is, the nut holding member 4 having the nut fitting portions 41 and 42 that hold the nuts 6 and 7 in the non-rotating state on the outer peripheral surface portion and the side surface is inserted into the hollow portion of the bracket 2, and the pipe joining bolt of the bracket 2 is inserted. Positioning is performed by matching the position of the nut 6 held in the hole 2a and the nut fitting portion 41 and the position of the nut 7 held in the bracket fitting bolt hole 2b and the nut fitting portion 42 of the bracket.
The bracket 2 in which the nut holding member 4 is positioned is applied to one side surface of the end column 1 ′, and the column joining bolt hole 2b provided in the bracket 2 and the through hole 1a ′ of the end column 1 ′ are made to coincide with each other. The nut holding member 4 inserted into the hollow portion of the bracket 2 through the bolt 8 'from the through hole 1a' on the other side surface of the end column 1 'toward the column joining bolt hole 2b of the bracket 2 The bracket 2 is attached to one side surface of the end column 1 ′ by screwing and fastening the nut 7 held.
Since the bolt 8 'uses a bolt having a flat head, it is possible to minimize the possibility that a passerby may come in contact with it and catch it on a bag or the like.

  As described above, the bracket 2 attached to the end column 1 'has a hollow portion of the beam pipe 3 extending from one side inserted into the outer periphery thereof, and the bolt hole 3a of the beam pipe 3 and the pipe connecting bolt hole 2a of the bracket 2. And a bolt 10 'having a flat head formed from the bolt hole 3a located at the lower outer portion of the beam pipe 3 is inserted upward, and the nut holding member 4 inserted in advance into the hollow portion of the bracket 2 is held. The center beam type road guard fence is constructed by screwing and fastening to the nut 6 to be engaged. Accordingly, the protrusions on the upper surface side of the beam pipe 3 are eliminated as much as possible at the column end 1 ', and there is no fear of catching clothes and heels of people who are in contact with the beam pipe 3, and over the entire length direction. A safe road fence can be realized.

  That is, according to the present invention, as described in the first and second embodiments, the nut holding member 4 (5) is inserted into the hollow portion of the bracket 2, and the hollow portion of the beam pipe 3 is inserted into the outer periphery of the bracket 2. By using the bolted connection using the nut 6 (9) held by the nut holding member 4 (5), it is possible to provide a road protection fence with a simple and smart design feeling throughout the road protection fence. .

  Although the present invention has been described based on the illustrated embodiment, the present invention is not limited to the configuration of the above embodiment. It should be noted that it includes a range of design changes and application variations made by those skilled in the art as needed without departing from the scope and purpose of the invention. For example, in the present embodiment, the case where the bracket in which the nut holding member is fitted into the hollow portion of the beam pipe is inserted is shown, but conversely, the beam pipe in which the nut holding member is fitted into the hollow portion of the bracket is inserted. It is also possible. Even in this case, since the nut does not protrude from the outer peripheral surface of the beam pipe, there is no risk of being caught on a passer's clothes and bag, and since the nut holding member is used, the bolt connection between the column and the bracket and There is an effect that the bolt connection between the bracket beam pipe and the bracket can be easily and quickly performed.

1 Intermediate strut (end strut)
1a Through-hole 2 (2R, 2L) Bracket 2a Pipe joint bolt hole 2b Column joint bolt hole 3 (3R, 3L) Beam pipe 3a Bolt hole 4 Nut holding member 41, 42 Fitting portion 41a, 42a Receiving seat 41b, 42b Locking portion 5 Nut holding member 51 Fitting portion 51a Receiving seat 51b Locking portions 6, 7, 9 Nut 8, 10 Bolt

Claims (14)

It is a joining structure of a strut and a beam pipe that is bolted using a nut held by a nut holding member that is inserted into the hollow portion of the bracket on the side of the strut,
The support column is provided with a through-hole for bolting the bracket,
The bracket is a pipe member having an outer peripheral surface and a side surface to be joined to the support column, and a pipe connection bolt hole for bolting to the beam pipe is provided on the outer peripheral surface, and the support member and the bolt connection are provided on the side surface. There are bolt holes for joining the columns to be
In the vicinity of the end of the beam pipe, a bolt hole is provided at a position that coincides with a pipe connecting bolt hole provided in the bracket,
The nut holding member includes an outer peripheral surface and a side surface, and is configured to have a shape in which movement in each direction orthogonal to the pipe axis of the bracket is restricted, and each bolt hole provided on the outer peripheral surface and the side surface of the bracket, A structure for joining a column and a beam pipe, which has a nut fitting portion that holds the nut in a non-rotating state at a matching position, and the nut fitting portion holds the nut.   The nut holding member to be inserted into the hollow portion of the bracket has a nut fitting portion that holds the nut used for bolting with the beam pipe on the outer peripheral surface in a non-rotating state, and the nut used for bolting with the support on the side surface A nut fitting portion that holds the nut in a non-rotating state, and each of the nut fitting portions is arranged at a position that matches the pipe joint bolt hole and the column joint bolt hole of the bracket. Item 1. A structure in which a support and a beam pipe are joined together.   The nut fitting portion of the nut holding member is formed slightly larger than the outer diameter of the nut, and the nut fitted into the nut fitting portion is held loosely to the extent that it does not rotate in the nut fitting portion. The joining structure of the support column and the beam pipe according to claim 1 or 2.   The strut and beam pipe joining structure according to any one of claims 1 to 3, wherein the nut fitting portion of the nut holding member includes a locking portion that prevents the nut from being pulled out.   The support structure of a support column and a beam pipe according to any one of claims 1 to 4, wherein the nut holding member is made of a synthetic resin.   The nut insertion portion of the nut holding member is formed with a nut insertion portion in which a part of the opening is cut out so that the nut can be slid sideways and fitted. The joining structure of the column and the beam pipe described in any one of the above.   The bolt that joins the beam pipe and the bracket has a flat head, and is inserted upward or obliquely upward from the outer bottom of the beam pipe and is screwed into the nut of the nut holding member. The joining structure of the support | pillar and beam pipe as described in any one of Claim 1-6. A bracket is bolted to the side of the column that is built on the ground with a gap along the road, and the bracket and the beam pipe are bolted, and each bolt joint is inserted into a hollow portion of the bracket. A road guard fence made by a held nut,
The support column is provided with a through-hole for bolting the bracket,
The bracket is a pipe member having an outer peripheral surface and a side surface to be joined to the support column, and a pipe connection bolt hole for bolting to the beam pipe is provided on the outer peripheral surface, and the support member and the bolt connection are provided on the side surface. There are bolt holes for joining the columns to be
In the vicinity of the end of the beam pipe, a bolt hole is provided at a position that coincides with a pipe connecting bolt hole provided in the bracket,
The nut holding member includes an outer peripheral surface and a side surface, and is configured to have a shape in which movement in each direction orthogonal to the pipe axis of the bracket is restricted, and each bolt hole provided on the outer peripheral surface and the side surface of the bracket, A road fence having a nut fitting portion that holds the nut in a non-rotating state at a matching position, and the nut fitting portion holds the nut. One bracket of the bracket attached to the left and right sides of the column is positioned by fitting a nut holding member into the hollow part from the end, and the same bracket is placed on one side of the column to join the column Bolt holes for use and the through holes provided in the columns are made to coincide, the other bracket is applied to the other side surface of the column, the bolt holes for joining the columns of the other bracket and the through holes on the other side surface of the column And a nut holding member that is positioned in the same bracket by inserting a bolt from the bolt hole for joining the pillar of the other bracket, passing it through the through hole of the pillar and the bolt hole for joining the pillar of one bracket The left and right brackets are screwed into the nut held on the side of the bracket, and the left and right brackets are attached to both sides of the column, and the nut holding part from the end into the hollow part of the other bracket It has been fitted,
The hollow part of the beam pipe is inserted into the outer periphery of each bracket attached to the left and right side surfaces of the support column, and the bolt hole provided in the beam pipe is aligned with the pipe joint bolt hole of each bracket, A bolt having a flat head formed from a bolt hole located at the outer bottom of the beam pipe is inserted upward or obliquely upward, and the nut holding member positioned in the bracket is screwed and joined to the held nut. The road guard fence according to claim 8, characterized in that it is a feature. A nut holding member used by being inserted into a hollow portion of a pipe material,
The nut holding member is provided with an outer peripheral surface and the side surface is shaped to move in each direction perpendicular to the tube axis of the tubular member is restricted, the nuts on the detent state on the outer peripheral surface and a side surface nut insertion portion holding is characterized Tei Rukoto provided, the nut holding member.   The nut fitting portion of the nut holding member is formed slightly larger than the outer diameter of the nut, and the nut fitted into the nut fitting portion is held loosely to the extent that it does not rotate in the nut fitting portion. The nut holding member according to claim 10.   The nut holding member according to any one of claims 10 and 11, wherein the nut fitting portion of the nut holding member includes a locking portion that prevents the nut from coming off.   The nut holding member according to any one of claims 10 to 12, wherein the nut holding member is made of a synthetic resin.   The nut insertion portion of the nut holding member is formed with a nut insertion portion in which a part of the opening is cut out so that the nut can be slid sideways and fitted. A nut holding member according to any one of the above.

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