JP2005336951A - Through-hole cover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a through-hole cover easily and surely fixable to a through-hole. <P>SOLUTION: This through-hole cover has a cover body 6 for covering an obverse side opening part of the through-hole 4, and an installation tool for fixing the cover body 6 to the through-hole 4. The installation tool has a receiving member 10 integrated with the cover body 6, a fastening bolt 11, an expansively opening member 12 threadedly engaged with the fastening bolt 11, a base board 21 arranged between the expansively opening member 12 and the receiving member 10, and a locking member 13 having integrally a pair of elastic piece parts 22 and 22 and elastic pressing parts 23 and 23 projecting from the tip part inside edge of the elastic locking piece parts 22. The elastic locking piece parts 22 and 22 are locked on an inside surface of the through-hole 4 by outwardly pressing the elastic locking piece parts 22 and 22 by a side surface of the expansively opening member 12 via the elastic pressing parts 23 by moving the expansively opening member 12 to the receiving member side by rotating the fastening bolt 11 in a state of stopping by applying the base board 21 of the locking member 13 to the receiving member 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a through hole cover that covers a through hole formed in a concrete block body mainly constituting a side groove.

  In general, a water permeable hole is formed on the upper surface of a concrete plate or a hollow box-shaped concrete body that constitutes a side groove of a road, and water generated by rain or the like can flow into the side groove from the water permeable hole and drain. Yes.

  However, since the edge of the water-permeable hole is in a state where the concrete is exposed, the opening edge is easily lost, and the opening edge of the water-permeable hole is lost, so that the hole width of the water-permeable hole is widened. There is a problem that it looks bad, and there is a problem that the heel part of the high heel or the wheel of the wheelchair fits and there is a risk of falling.

Therefore, in the past, a through-hole cover that covers the opening of the through-hole was used to protect the through-hole and prevent wheelchair removal and the heel part of the high heel from being fitted to increase safety. The through-hole cover is fixed to the through-hole by a mounting tool.
JP 10-131733 A

  However, in the conventional technology as described above, since the mounting tool is disposed on the back side of the through hole cover, there is a problem that it is difficult to attach to the through hole, and it is easy if the fixing with the mounting tool is insufficient. However, there is a problem that the water-permeable hole cover is removed, which is dangerous.

  In view of the above-described problems of the conventional technology, an object of the present invention is to provide a through hole cover that can be easily and reliably fixed to the through hole.

In order to solve the conventional problems as described above and achieve the intended object, the invention according to claim 1 is directed to a cover body that covers a front side opening of a through hole formed in a concrete body, and the cover body. In the through hole cover provided with a mounting tool for fixing to the through hole,
The mounting tool includes a receiving member integrated with the cover body,
A fastening bolt that is rotatably supported by the receiving member and protrudes into the through hole;
An expansion member that is screwed onto the tightening bolt and moves in the axial direction relative to the tightening bolt by rotating the tightening bolt;
A substrate disposed between the spreading member and the receiving member, a pair of elastic piece portions projecting downward from both side edges of the substrate, and an elasticity projecting obliquely upward from the inner edge of the tip end portion of the elastic locking piece portion A locking member integrally having a pressing part,
In a state where the substrate of the locking member is held against the receiving member, the side surface of the expanding member is moved to the elastic member by rotating the fastening bolt and moving the expanding member to the receiving member side. It is a through-hole cover in which the elastic locking piece portion is pressed outward through a pin and the elastic locking piece portion is locked to the inner side surface of the through-hole.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect, the spreading member includes an inclined portion at an upper portion of the side surface.

  The invention according to claim 3 is characterized in that, in addition to the configuration of claim 1 or 2, the shape of the through hole is a tapered shape with a narrow front side.

The through-hole cover according to the present invention is a through-hole cover provided with a cover main body that covers a front opening of a through-hole formed in a concrete body, and a mounting tool for fixing the cover main body to the through-hole. The mounting tool includes a receiving member integrated with the cover body, a fastening bolt that is rotatably supported by the receiving member, protrudes into the through hole, and is screwed into the fastening bolt. An expanding member that moves axially relative to the tightening bolt by rotating;
A substrate disposed between the spreading member and the receiving member, a pair of elastic piece portions projecting downward from both side edges of the substrate, and an elasticity projecting obliquely upward from the inner edge of the tip end portion of the elastic locking piece portion A locking member integrally having a pressing portion, and in a state where the substrate of the locking member is held against the receiving member, the fastening bolt is rotated to move the expanding member toward the receiving member. Thus, the side surface of the expanding member presses the elastic locking piece portion outwardly through the elastic pressing portion, and the elastic locking piece portion is locked to the inner side surface of the through hole. Thus, the mounting operation can be performed from the front side of the cover main body, so that the mounting can be easily performed, and the elastic locking piece is elastically locked to the inner surface of the through hole, so that the through hole can be securely attached. Can be fixed to.

  Since the expanding member is provided with the inclined portion at the upper part of the side surface, the elastic locking piece portion and the elastic concave pressure portion can be operated smoothly.

  By making the shape of the through-hole into a tapered shape on the front side, when attaching to the through-hole, it is easy to insert the locking member, and after insertion, the elastic locking piece is suitably locked to the inner surface of the through-hole. It becomes like this.

  Next, the mounting tool according to the present invention will be described.

  1 and 2 show a state of attachment of the through hole cover. In the drawings, reference numeral 1 denotes a concrete body, and reference numeral 2 denotes a through hole cover.

  The concrete body 1 is formed in a rectangular parallelepiped shape, and a circular flowing water channel 3 is formed through the central longitudinal direction.

  In the upper surface portion of the concrete body 1, elongated through holes 4, 4 communicating with the internal flowing water channel 3 are formed at intervals, and the through hole cover 2 is formed at the periphery of the upper surface opening of the through hole 4. A mounting recess 5 into which is fitted is formed.

  Further, the through holes 4 are tapered so that the front side is narrow, that is, inclined so that both inner side surfaces of the through holes 4 are away from each other toward the back side.

  As shown in FIGS. 3 and 4, the through hole cover 2 includes a cover main body 6 and an attachment tool for attaching the cover main body 6 to the through hole 4, and by locking the attachment tool to the through hole 4. It can be attached to the through hole 4.

  The cover body 6 is formed in a shape in which a U-shaped cross section having side plates 7 and 7 projecting downward from both side edges is continuous in accordance with the shape of the opening of the through hole 4, that is, the mounting recess 5.

  A plurality of water guide holes 8, 8... For ensuring the function of the through holes 4 are formed on the surface portion of the cover body 6 at intervals. Bolt exposure windows 9 and 9 are formed to expose the head end face.

  The mounting tool includes a receiving member 10 that is integrated with the cover body 6, a fastening bolt 11 that is rotatably supported by the receiving member 10, an expanding member 12 that is screwed to the fastening bolt 11, and a through hole 4. It is comprised with the latching member 13 latched by the side surface.

  The receiving member 10 is formed by bending a metal plate material into a U-shaped cross-section in which the side plates 14 and 14 are raised from both side edges, and a bolt insertion hole 15 through which the fastening bolt 11 is inserted in the center. Is formed.

  The receiving member 10 is integrated with the longitudinal end portion of the cover body 6 by welding and fixing the side plates 7 and 14 so that the central axes of the bolt insertion hole 15 and the bolt exposure window 9 coincide. ing.

  The tightening bolt 11 has a threaded portion protruding through the bolt insertion hole 15 to the lower side of the receiving member 10, that is, the side opposite to the cover main body 6, and a head 16 supported by the opening edge of the bolt inserting hole 15. 10 is supported rotatably.

  The expanding member 12 includes inclined portions 18 and 18 that are continuous with the flat portions 17 and 17 on both side surfaces so that the upper sides thereof are close to each other at the upper portion of the side surface, and the longitudinal direction length is longer than the width direction length of the through hole 4. It is formed of resin concrete (resin concrete) so as to be long.

  Further, the expanding member 12 is formed with a bolt insertion hole 19 penetrating in the vertical direction in the center portion, and a nut 20 is integrated with the bottom opening of the bolt insertion hole 19 so that the screw portion is continuous with the bolt insertion hole 19. Is held.

  The spreading member 12 is moved axially with respect to the tightening bolt 11, that is, vertically moved by rotating the tightening bolt 11 by screwing the nut 20 that is integrally held to the tightening bolt 11. Yes.

  The locking member 13 includes a substrate portion 21 disposed between the receiving member 10 and the spreading member 12, a pair of elastic locking pieces 22, 22 protruding downward from both side edges of the substrate portion 21, and an elastic member. The locking piece 22 is integrally formed with elastic pressing portions 23 and 23 that protrude obliquely upward from the inner edge of the tip.

  The substrate portion 21 is formed in a flat plate shape having a bolt insertion hole 24 in the center, and the clamping bolt 11 is passed through the bolt insertion hole 24 between the receiving member 10 and the expanding member 12 to expand the receiving member 10 and the expanding member 12. It is arranged between the opening member 12.

  The elastic locking piece portion 22 is formed so as to continuously protrude downward from both side edges of the substrate portion 21 and is elastically deformed with a boundary portion with the substrate portion 21 as a base end.

  The elastic pressing portion 23 is integrally formed to protrude obliquely upward from the inner edge of the distal end portion of the elastic locking piece portion 22 and is elastically deformed with a boundary portion with the elastic locking piece portion 22 as a base end. .

  Next, a method for attaching the through hole cover 2 will be described.

  First, the expanding member 12, that is, the nut 20 held by the expanding member 12 is rotated relative to the tightening bolt 11 to move the expanding member 12 toward the distal end side of the tightening bolt 11, and the expanding member 12. The inclined portion 18 and the outer surface of the elastic pressing portion 23 are brought into contact with each other.

  In this state, the mounting tool is inserted into the through hole 4 and the cover body 6 is fitted into the mounting recess 5.

  Next, a hexagon wrench is inserted into the hexagon hole of the head 16 of the tightening bolt 11 from the bolt exposure window 9 of the cover body 6 and rotated in a predetermined direction, thereby moving the expanding member 12 to the transfer member side. Then, the spreading member 12 pushes up the locking member 13 to the receiving member side, and the substrate portion 21 is held against the lower surface of the receiving member 10.

  When the tightening bolt 11 is rotated in this state, the inclined portion 18 of the spreading member 12 presses the elastic locking piece portion 22 outward through the elastic pressing portion 23, and the both elastic locking piece portions 22 are gradually moved. Expand into an eight-letter shape.

  Further, when the tightening bolt 11 is rotated, the elastic pressing portion 23 comes into elastic contact with the side flat portion 17 of the spreading member 12, and both elastic locking pieces 22 are pressed outward with the maximum stress at that position. Both elastic locking pieces 22 are locked in contact with the inner surface of the through-hole 4 elastically.

  Thereby, the through hole cover 2 is fixed to the through hole 4.

  In the above-described embodiment, the example in which the expanding member 12 is made of resin concrete (resin concrete) has been described, but it may be formed of concrete, metal, or other material.

  In the above-described embodiment, the cover main body 6 and the receiving member 10 are separately configured and integrated. However, a part of the cover main body 6 may be used as the receiving member 10.

It is a perspective view which shows the attachment state of the through-hole cover which concerns on this invention. It is sectional drawing which shows the attachment state of a through-hole cover same as the above. (A) is a top view which shows the through-hole cover in FIG. 1, (b) is the same front view. It is sectional drawing which shows a through-hole cover same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Concrete body 2 Through-hole cover 3 Flow channel 4 Through-hole 5 Mounting recessed part 6 Cover main body 7 Side plate 8 Water guide hole 9 Bolt exposure window 10 Receiving member 11 Tightening bolt 12 Expansion member 13 Locking member 14 Side plate 15 Bolt insertion hole 16 Head Part 17 Flat part 18 Inclined part 19 Bolt insertion hole 20 Nut 21 Substrate part 22 Elastic locking piece part 23 Elastic pressing part 24 Bolt insertion hole

Claims (3)

In a through hole cover provided with a cover main body that covers the front side opening of the through hole formed in the concrete body, and a mounting tool for fixing the cover main body to the through hole,
The mounting tool includes a receiving member integrated with the cover body,
A fastening bolt that is rotatably supported by the receiving member and protrudes into the through hole;
An expansion member that is screwed onto the tightening bolt and moves in the axial direction relative to the tightening bolt by rotating the tightening bolt;
A substrate disposed between the spreading member and the receiving member, a pair of elastic piece portions projecting downward from both side edges of the substrate, and an elasticity projecting obliquely upward from the inner edge of the tip end portion of the elastic locking piece portion A locking member integrally having a pressing part,
In a state where the substrate of the locking member is held against the receiving member, the side surface of the expanding member is moved to the elastic member by rotating the fastening bolt and moving the expanding member to the receiving member side. A through hole cover characterized in that the elastic locking piece portion is pressed outward through a pin and the elastic locking piece portion is locked to the inner side surface of the through hole.   The through-hole cover according to claim 1, wherein the expanding member includes an inclined portion at an upper portion of the side surface.   The through-hole cover according to claim 1, wherein the shape of the through-hole is a tapered shape with a narrow front side.