JP2007031953A - Joint cover of guardrail - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint cover of a guardrail for eliminating an accident such as a passerby is injured by touching its guardrail by preventing the occurrence of a phenomenon of leaving a metallic piece when a part of a car body of an automobile bites in clearance even if the automobile contacts like rubbing on the guardrail. <P>SOLUTION: This connection part cover A1 of the guardrail is installed in a joint 24 fastened by a bolt 26 by superposing a projection strip 23a and a recessed strip 23b before ad behind a guardrail beam 22 alternately arranged in the longitudinal direction; and has a sheathing part 1 molded by a synthetic resin material and bending a rear inner surface 1a along a front shape of the connecting part 24. The sheathing part 1 is molded in the size of covering the joint 24 so as to hide its joint part 30. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a guard rail connecting portion cover which is attached to a guard rail connecting portion installed along a side portion of a road so as to partition a roadway and a sidewalk for safety so as to cover the connecting portion.

Conventionally, a guardrail is formed of a strip-shaped steel plate having a certain length, and a plurality of guardrail beams in which convex and concave stripes are alternately provided along the longitudinal direction of the guardrail are overlapped in the front and rear directions. And it installs by bolting and attaching this connection part (for example, refer patent document 1).
Japanese Patent Laid-Open No. 9-250115 (page 3, FIGS. 5 and 6)

  By the way, recently, it is screwed into the connecting portion of the guard rail, specifically, the gap or connecting portion between the edge of the front guard rail beam (hereinafter simply referred to as “beam”) and the front surface of the rear beam. A phenomenon occurs in which a sharp metal piece with a sharp tip is sandwiched between the substantially hemispherical bolt head and the front surface of the beam, and the metal piece protrudes from the front surface of the guide rail. For this reason, accidents have occurred where passers-by on bicycles touched their sharp edges without knowing and were injured. The metal piece is a part of a vehicle body of a traveling vehicle, and when the vehicle contacts the guard rail so as to rub, a part of the vehicle body bites into the gap and is separated by a strong force. Is known.

  Therefore, the present invention has been made to solve the above-described problem, and even if the automobile contacts the guard rail so as to rub, a phenomenon in which a part of the automobile body bites into the gap and a metal piece remains does not occur. Thus, it is an object of the present invention to provide a guardrail connection cover that eliminates an accident in which a passerby touches and injuries.

  In order to achieve such an object, the guard rail connection portion cover according to the present invention is a guard rail connection portion cover that is attached to a connection portion that is overlapped and bolted before and after the guard rail beam, and is formed of a synthetic resin material. The rear inner surface has a cover plate portion along the front surface shape of the connection portion, and the cover plate portion is shaped to cover the connection portion so that the joint is hidden.

  For example, a pair of holding plate portions that extend to the rear side of the connection portion and can be connected to each other at the upper and lower end edges of the cover plate portion are integrally provided, and the connection is achieved by connecting the holding plate portions to each other. The structure attached to the part is taken.

  At this time, it is preferable to provide a concave recess on the rear inner surface of the cover plate portion corresponding to the head of the bolt and facing the head.

  In addition, a rear cover plate portion connected to the upper and lower edges of the cover plate portion is integrally provided on the rear side of the cover plate portion, and a through hole that faces the head at a position corresponding to the head portion of the bolt is provided in the cover plate portion. A penetrating structure is adopted.

  The guard rail connection portion cover according to the present invention has a cover plate portion that is formed of a synthetic resin material and has a rear inner surface bent along the front surface shape of the beam connection portion, and the cover plate portion includes the beam connection portion. Since the joint is formed in such a size as to be hidden, the joint of the beam in the connection portion or the head of the bolt is completely covered by the connection portion cover. Therefore, even if the automobile comes into contact with the guard rail so as to rub, a phenomenon that a part of the automobile body bites into the joint or the inner surface of the head of the bolt does not occur. Thereby, the phenomenon that the metal piece protrudes from the guard rail disappears, and there is an effect that the passer-by can pass safely without being injured.

  A pair of holding plate portions that extend to the rear side of the beam connecting portion and can be connected to each other at the upper and lower end edges of the cover plate portion are integrally provided, and the holding plate portions are connected to each other. It can be easily attached to the guardrail and is convenient.

  In addition, if a recess is provided on the rear inner surface of the cover plate corresponding to the head of the bolt so that the head faces, the head of each bolt enters the recess and the rear of the cover plate. The inner surface is in perfect contact with the front surface of the beam. Therefore, it has good adhesion and is useful for preventing the beam from shifting in the longitudinal direction, and the effect of preventing the phenomenon that a part of the vehicle body of the automobile bites into the joint is improved.

  In addition, if a rear cover plate portion connected to the upper and lower edges of the cover plate portion is integrally provided on the rear side of the cover plate portion, when a guardrail is newly installed, only a beam is inserted therethrough. There is an effect that the guard rail connecting portion cover can be attached and the attachment can be easily performed. In addition, in this case, the cover plate portion is provided with a through hole that faces the head portion of the bolt so as to correspond to the head portion of the bolt. The rear inner surface is in perfect contact with the front surface of the beam. Therefore, it has good adhesion and is useful for preventing the beam from shifting in the longitudinal direction, and the effect of preventing the phenomenon that a part of the vehicle body of the automobile bites into the joint is improved.

  Embodiments of a guardrail connection portion cover (hereinafter simply referred to as “connection portion cover”) according to the present invention will be described below with reference to the drawings. In the present invention, the first and second connecting portion covers are attached to the existing guard rail, and the third connecting portion cover is attached to the newly installed guard rail.

  FIGS. 1 to 5 show the first connection portion cover, FIG. 1 is a perspective view seen from the front of the first connection portion cover, FIG. 2 is a perspective view seen from the rear, and FIG. FIG. 4 is a cross-sectional view taken along the line WW in FIG. 3, and FIG. 5 is a cross-sectional view taken along the line XX in FIG. 3. The first connection portion cover A1 is formed of a synthetic resin material such as high-density polyethylene resin, for example, and has a cover plate portion 1 that is attached to the front surface of the connection portion 24 of the beam 22 described later. The cover plate portion 1 covers the front surface of the connection portion 24 and has a size such that the joint 30 is hidden, and has a substantially rectangular front shape. The rear inner surface 1a follows the front shape of the connection portion 24 of the beam 22. The bent ridges 2a and the recessed ridges 2b are alternately provided in the horizontal direction.

  A pair of holding plate portions 3a and 3b that extend to the rear side of the connection portion 24 of the beam 22 and can be connected to each other are integrally provided on both upper and lower edges of the cover plate portion 1 and on the left and right sides. In view of this, the mounting holes 4 are formed in the holding plate portions 3a and 3b so as to communicate with the portions overlapping each other. The rear inner surface 1a of the cover plate portion 1 is provided with a plurality of recessed recesses 5 corresponding to the heads 26a of the plurality of bolts 26 screwed to the beam 22 and facing the heads 26a. ing. The concave recess 5 may be sized so that two, three, four, or all of the heads 26a of the bolt 26 face at the same time.

  The guardrail 20 is composed of columns 21 that are erected along a side of the road at a predetermined interval (for example, 4 m), and a large number of beams 22 that are supported by bolts to these columns 21. Each column 21 is formed from a metal pipe. The beam 22 is formed from a strip steel plate, and has a vertical width dimension of, for example, 350 mm and a horizontal length dimension of, for example, 4.5 m. Each beam 22 is provided with ridges 23a and ridges 23b alternately along the longitudinal direction, that is, the horizontal direction.

  Then, the connection parts 24 and 24 which are the ends of the adjacent beams 22 and 22 are overlapped in the front and rear, and three bolts are provided so as to communicate with each other on both sides of the support column 21 of the connection part 24. Bolts 26 are respectively inserted into the insertion holes 25, and nuts 27 are screwed to the bolts 26 from the rear side of the connection portion 24. At this time, the bolt insertion hole 25 at the intermediate position communicates with the bolt insertion hole 29 of the horizontal arm fitting 28 provided integrally with the column 21, and the arm fitting 28 is also screwed together only in these cases. Is done. In this way, the guard rail 20 is installed. The head 26a of each bolt 26 is formed into a spherical shape. This is to prevent injury from contact.

  Next, the attachment method of 1st connection part cover A1 which concerns on this invention is demonstrated. First, on the front surface of the connecting portion 24 of both adjacent beams 21 and 21, the ridges 2a and 2b of the rear inner surface 1a match the ridges 23a and 23b of the connecting portion 24, and each bolt 26 The cover plate portion 1 is placed so that the head portion 26a faces the respective recessed portions 5. Then, a pair of holding plate portions 3a and 3b extending respectively from the left and right sides of the upper and lower end edges of the cover plate portion 1 are rotated to the rear side of the connection portion 24 so as to overlap and communicate with the mounting holes 4 and 4 that are overlapped with each other. The mounting bolts 6 are inserted, and the mounting nuts 7 are screwed into the mounting bolts 6 to connect the holding plate portions 3a and 3b. Accordingly, the first connection portion cover A1 is attached to the guide rail 20.

  In this state, the joint 30 of the beam 22 and the head 26a of the bolt 26 in the connecting portion 24 are completely covered by the connecting portion cover A1. Therefore, even if the automobile contacts the guard rail 20 so as to rub, a phenomenon in which a part of the automobile body bites into the joint 30 or the inner surface of the head 26a of the bolt 26 can be prevented. Thereby, the phenomenon that the metal piece protrudes from the guard rail does not occur, and the passer-by can pass safely without being injured. Further, since the heads 26 a of the respective bolts 26 enter the respective recessed portions 5, the rear inner surface 1 a of the cover plate portion 1 is in perfect contact with the front surface of the beam 22. Therefore, it has good adhesion and is useful for preventing the beam 22 from shifting in the longitudinal direction.

  FIG. 6 relates to another embodiment of the first connection portion cover A1, and is a cross-sectional view showing an attachment state. The second connection portion cover A2 is substantially the same in material and structure as the first connection portion cover A1, but does not have the holding plate portions 3a and 3b unlike the first connection portion cover A1. In addition, detailed description is abbreviate | omitted by attaching | subjecting the same number to the same site | part as 1st connection part cover A1. That is, the clamping parts 8 and 8 which protrude back are provided in the upper-lower-end edge. Each of the upper and lower clamping parts 8, 8 is provided with an insertion port 8 a that is continuous with the rear inner surface 1 a on the front side, and an insertion gap 8 b that is connected to the insertion port 8 a and has a narrow vertical width at the back. .

  In the second connection portion cover A2, a bent side 22a that is bent rearward of the upper end edge of the beam 22 is inserted into the clamping gap 8b through the insertion port 8a, and the front surface of the connection portion 24 is formed in the same manner as described above. Cover the cover plate 1. Further, a bent side 22b bent to the rear of the lower end edge of the beam 22 is inserted into the clamping gap 8b through the insertion port 8a. As a result, the sandwiching portions 8 and 8 at the upper and lower end edges firmly hold the bent sides 22a and 22b at the upper and lower end edges of the beam 22, and the mounting operation of the second connection portion cover A2 is simplified.

  FIGS. 7 to 11 show the third connection portion cover. FIG. 7 is a perspective view seen from the front of the third connection portion cover, FIG. 8 is a perspective view seen from the rear, and FIG. FIG. 10 is a cross-sectional view taken along line YY of FIG. 9, and FIG. 11 is a cross-sectional view taken along line ZZ of FIG. The third connection portion cover A3 is also formed of a synthetic resin material such as high-density polyethylene resin, for example, and has a cover plate portion 11 attached to the front surface of the connection portion 24 of the beam 22. The cover plate portion 11 covers the front surface of the connection portion 24 and has a size such that the joint 30 is hidden, and has a substantially rectangular front shape. The rear inner surface 11a follows the front shape of the connection portion 24 of the beam 22. The bent ridges 12a and the concave ridges 12b are alternately provided in the horizontal direction.

  A rear cover plate portion 13 connected to upper and lower edges of the cover plate portion 11 is integrally provided on the rear side of the cover plate portion 11. The rear cover plate portion 13 is provided with a through hole 14 at a substantially central portion. This is for interposing the support column 21 so that the support column 21 does not get in the way. Further, the cover plate portion 11 is provided with a through hole 15 that faces the head portion 26a of the bolt 26 and faces the head portion 26a.

  Then, the third connection portion cover A3 is disposed on the front surface of the support column 21, and both end portions of the adjacent beam 22 are inserted between the cover plate portion 11 and the rear cover plate portion 13 from both sides, and overlapped in the front and rear directions. The portion 24 is covered with the third connection portion cover A3. In this state, the bolt insertion holes 25 before and after the connection portion 24 and the through holes 15 formed in the cover plate portion 11 are matched, and the bolts 26 are inserted into the bolt insertion holes 25 through the respective through holes 15. Then, a nut 27 is screwed to each bolt 26 on the rear side of the connection portion 24. Among these, the central bolt 26 is further inserted into the bolt insertion hole 29 of the arm bracket 28 of the support column 21. Thereby, both beams 22 and 22 adjacent to the column 21 are assembled, and the third connection portion cover A3 is also attached at the same time.

  In this state, the joint 30 of the beam 22 and the head 26a of the bolt 26 in the connecting portion 24 are covered with the connecting portion cover A1. Therefore, even if the automobile contacts the guard rail 20 so as to rub, a part of the automobile body does not bite into the joint 30. Further, since the head portions 26a of the respective bolts 26 are located in the respective through holes 15, a part of the vehicle body of the automobile does not bite into the inner surface of each of the head portions 26a. Therefore, also in this case, the phenomenon that a part of the vehicle body of the automobile bites into the joint 30 or the inner surface of the head 26a of the bolt 26 does not occur. Thereby, the phenomenon that the metal piece protrudes from the guard rail 20 disappears, and there is an effect that the passer-by can pass safely without being injured. Further, since the head portions 26a of the respective bolts 26 face the respective through holes 15, the rear inner surface 11a of the cover plate portion 11 is in good contact with the front surface of the beam 22, and thus the adhesiveness is good. It also helps prevent slippage.

  The first to third connection portion covers A1, A2 and A3 have been described as using high-density polyethylene resin, for example, but other recycled resin materials may be used. In addition, a reflective material that shines on the surface of the first to third connection cover A1, A2, A3, for example, when a car light hits, alerts the driver and improves the visibility of the guardrail is attached. Also good.

The perspective view seen from the front of the 1st connection part cover. The perspective view seen from the back. The perspective view which shows the use condition. The WW sectional view taken on the line of FIG. XX sectional drawing of FIG. Sectional drawing which shows the use condition of a 2nd connection part cover. The perspective view seen from the front of the 3rd connection part cover. The perspective view seen from the back. The perspective view which shows the use condition. The YY sectional view taken on the line of FIG. ZZ sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cover plate part 1a Rear inner surface 3a Holding plate part 3b Holding plate part 5 Recessed recessed part 13 Rear cover plate part 15 Through-hole 22 Beam 23a Convex strip 23b Concave strip 24 Connection part 26 Bolt 27 Nut 30 Joint A1 1st connection part Cover A2 Second connection cover A3 Third connection cover

Claims (4)

A guard rail connection cover that is attached to a connection part that is overlapped and bolted before and after the beam for the guard rail,
The rear inner surface is formed of a synthetic resin material and has a cover plate portion that follows the shape of the front surface of the connection portion, and the cover plate portion is formed in a size that covers the connection portion so that the joint is hidden. Guard rail connection cover characterized by   A pair of holding plate portions that extend to the rear side of the connecting portion and can be connected to each other are integrally provided on both upper and lower edges of the cover plate portion, and the holding plate portions are connected to each other by connecting the holding plate portions to each other. The guard rail connection cover according to claim 1, which is attached.   The guard rail connection portion cover according to claim 1 or 2, wherein a concave recess portion is provided on the rear inner surface of the cover plate portion so as to correspond to the head portion of the bolt and face the head portion.   A rear cover plate portion that is continuous with the upper and lower edges of the cover plate portion is integrally provided on the rear side of the cover plate portion, and a through-hole that faces the head portion is positioned in the cover plate portion corresponding to the head of the bolt. The guard rail connecting portion cover according to claim 1, wherein the guard rail connecting portion cover is provided.

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