JP3180315B2 - Gutter and its gutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention
The present invention relates to a U-shaped side groove and a groove cover for closing the side groove.

[0002]

2. Description of the Related Art Conventionally, a U-shaped gutter provided on a side of a road for collecting water or the like is fitted with a groove cover for closing the gutter, and a groove cover is fitted into an opening of the gutter. A matching step is formed. By the way, it is general that this type of gutter and the gutter are formed of concrete or the like, and the gutter and the step on which the gutter is placed are formed in a planar shape.
For this reason, even if a slight step is generated between the groove cover and the stepped portion, the groove cover rattles, and noise is generated when the vehicle passes.

Therefore, a gutter for suppressing the generation of such noise has been proposed in Japanese Patent No. 2514918. This is because, as shown in FIG. 4 , the contact surface of the groove cover 51 and the contact surface of the side groove 50 have a geometrically similar curved surface over the entire surface.
By forming the grooves 55 and 56, the degree of close contact between the contact surfaces of the groove lid 51 and the side groove 50 is increased, and noise when passing through the vehicle is eliminated. However, the curved surface portion 55 of the groove lid 51 is formed so as to draw a parabola from the bottom to the side surface of the groove lid 51. When a vertical load is applied to the groove cover 51, the groove cover 51 is guided downward along the curved surfaces 55 and 56, and the groove cover 51 bites into the inside of the side groove 50.
For this reason, a stress in a direction spreading outward acts on both side walls 50A of the side groove 50, and stress is applied to a connecting portion between the both side walls 50A and the bottom wall 50B of the side groove 50, and there is a possibility that the base of the both side walls 50A is damaged. There is. Also, when applied in the vertical load on the outer shifted from the center of Mizofuta 51, Mizofuta 51 is guided downward along the curved surface portion 56 of the groove 50, as shown by a chain line in FIG. 4, relatively groove There is a possibility that the other side of the lid 51 jumps up and the groove lid 51 comes off, and there is a danger of the vehicle getting out of the wheel.

The present invention is intended to solve such a problem, and eliminates noise at the time of passing through a vehicle and accurately positions and holds a groove cover with respect to a side groove to prevent fluctuation of the groove cover. It is an object of the present invention to provide a gutter and a gutter capable of forming the gutter.

[0005]

According to a first aspect of the present invention, there is provided a concrete U-shaped side groove which forms a step having a horizontal portion and a rising portion in an opening, and is mounted on the horizontal portion of the step. And a concrete groove lid for closing the opening of the gutter, and an engagement recess is formed on one of the back side of the lid and the horizontal portion of the step portion, and the engaging recess is formed on the other. Forming an engagement protrusion engaging with the engagement recess; and engaging the engagement protrusion with the engagement recess.
Are each configured with a curved surface, and the curved surface portion of the engagement convex portion.
Is larger than the curvature of the curved surface of the engagement recess.
Line the edges of the engagement recesses with the outer surfaces of the engagement projections respectively.
It is configured to engage in a contact state, and while maintaining a gap extending from a horizontal portion to a rising portion between the groove lid and the step portion, a line contact portion between the engagement concave portion and the engagement convex portion is formed. Except for this, the groove lid is positioned while keeping a slight gap between the engaging concave portion and the engaging convex portion.

When the groove cover is fitted into the step portion of the side groove, the groove cover is positioned and held with respect to the side groove by the engagement between the engaging projection and the engaging concave portion. At this time, a slight gap is formed between the groove cover and the stepped portion, and the noise when the vehicle passes over the groove cover is suppressed because the contact surface between the side groove and the groove cover is contacted by two lines on one side. Is done. In addition, a portion where the engagement convex portion and the engagement concave portion come into contact with each other is
By configuring each with a curved surface, the vertical
Load is distributed throughout the gutter, reducing the load on the base of the side wall
Is reduced.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 and 2 show an embodiment of the present invention, in which 1 is a side groove made of concrete, which is formed in a U-shaped cross section having a bottom wall 2 and left and right side walls 3. Further, a step 5 having a horizontal portion 5A and a rising portion 5B is formed in the opening 4 of the side groove 1, and a flat plate-like groove cover 6 made of concrete like the side groove 1 is formed in the step 5. I'm fitting. The groove cover 6 has a rectangular or square shape as a whole, and the groove cover 6
Is inserted, the width W1 of the groove cover 6 is changed to the opening width W2 of the side groove 1 such that a slight gap is formed between both outer edges of the groove cover 6 and the rising portion 5B of the step portion 5. It is formed somewhat narrower. An engaging projection 7 projects from the horizontal portion 5A of the side groove 1 along the longitudinal direction of the side groove 1, and an engaging recess corresponding to the engaging projection 7 is formed on the back surface of the groove cover 6. 8 are formed. The engaging projection 7 and the engaging recess 8 are both formed as curved surfaces, and the engaging groove 7 and the curved surfaces 9 and 10 of the engaging recess 8 are engaged to form the side groove 1 and the groove cover 6. Position. In addition, each curved surface portion 9 of the engagement convex portion 7 and the engagement concave portion 8,
Reference numeral 10 denotes a curved surface portion of the engaging concave portion 8 formed on the groove cover 6 which has a different curvature and a curved surface portion 9 of the engaging convex portion 7 formed on the step portion 5.
It is set slightly larger than the curvature of. Therefore, when the groove cover 6 is fitted into the step portion 5 of the side groove 1, the curved surface portion 9 of the engaging convex portion 7 formed on the step portion 5 is completely fitted with the curved surface portion 10 of the engaging concave portion 8. 2, the peripheral edge of the curved surface portion 10 of the engaging concave portion 8 is engaged with the curved surface portion 9 of the engaging convex portion 7 in a line contact state, and the groove cover 6 and the horizontal portion 5A of the step portion 5 are in contact with each other. A slight gap is also formed between them.

As described above, in the present embodiment, the groove is formed with respect to the side groove 1 by the engagement of the engaging convex portion 7 formed on the step portion 5 of the side groove 1 and the engaging concave portion 8 formed on the groove cover 6. The lid 6 is positioned and held, and the fluctuation of the groove lid 6 can be suppressed. Further, by forming the curved surface portions 9 and 10 at the portions where the engaging convex portions 7 and the engaging concave portions 8 are in contact with each other, the vertical load applied to the groove lid 6 can be reduced such that the side wall 3 is outside as in the conventional example described above. It is dispersed throughout the side groove 1 without being added in the direction in which it spreads. Therefore, the load on the step 5 supporting the groove lid 6 and the base of the side wall 3 can be reduced, and the durability of the side groove 1 can be improved. In addition, the engagement protrusion 7 of the side groove 1 and the groove cover 6
The groove cover 6 positioned and held by the engagement with the engagement concave portion 8 formed in the step 5 has a slight gap formed between its outer edge and the rising portion 5B of the step portion 5, and the step portion 5 has By setting the curvature of the curved surface portion 9 of the engaging convex portion 7 to be formed to be slightly larger than the curvature of the curved surface portion 10 of the engaging concave portion 8 formed in the groove cover 6, the horizontal portion 5A of the step portion 5 and the groove cover are formed. A slight gap is also formed between them. For this reason, the contact surface between the side groove 1 and the groove cover 6 comes into contact with two lines on one side, so that noise when the vehicle passes over the groove cover 6 can also be suppressed. In addition, sand and soil enter the gap between the step 5 of the side groove 1 and the groove lid 6, and the sand and soil entering the gap act as a cushioning material, thereby further suppressing noise when passing through the vehicle. Can be.

Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments.
Various modifications can be made within the scope of the present invention.
For example, in each of the foregoing embodiments, to form the engagement projections on side grooves side, an example of forming the engaging recess groove cover side, as in the second embodiment of the present invention shown in FIG. 3, Curved surface 10 on side groove 1
May be formed, and the engaging convex portion 7 having the curved surface portion 9 on the groove lid 6 side may be formed. In addition, the present invention can be applied not only to the gutter but also to the main body and the main body.

[0010]

According to the first aspect of the present invention, a concrete U-shaped side groove which forms a step having a horizontal portion and a rising portion in an opening, and is placed on the horizontal portion of the step. And a concrete groove cover for closing the opening of the side groove, and an engagement recess is formed on one of the back side of the lid and the horizontal portion of the step, and the engagement recess is formed on the other. Are formed, and these engaging protrusions and the engaging concave portions are respectively formed.
Re in together when a curved surface, the curvature of the curved portion of the engaging protrusion
The engagement as a curvature larger than the curvature of the curved surface portion of the engagement recess.
Both edges of the recess are in line contact with the outer surface of the engaging projection
And the gap between the groove cover and the stepped portion to maintain a gap extending from the horizontal portion to the rising portion, except for a line contact portion between the engagement concave portion and the engagement convex portion. Since the groove cover is positioned while maintaining a small gap between the engaging concave portion and the engaging convex portion, the contact surface between the side groove and the groove cover comes in contact with two lines, so that when the vehicle passes, Noise can be suppressed, and the vertical load applied to the groove
It can be dispersed in the body and the burden on the base of the side wall can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a side groove showing a first embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view showing an engagement state between an engagement protrusion and an engagement recess.

FIG. 3 is an enlarged sectional view showing a second embodiment of the present invention.

FIG. 4 is a sectional view of a side groove showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side groove 4 Opening part 5 Step part 6 Groove cover 7 Engagement convex part 8 Engagement concave part 9,10 Curved surface part

Claims (1)

(57) [Claims] 1. A concrete U-shaped gutter forming a step having a horizontal part and a rising part in an opening, and a concrete which is placed on the horizontal part of the step and closes the opening of the gutter. A grooved lid, and an engaging recess is formed on one of the rear surface side of the lid and the horizontal portion of the step portion, and the other has an engaging convex portion that engages with the engaging concave portion. Forming and engaging these
The convex portion and the engaging concave portion are each configured by a curved surface.
The curvature of the curved surface of the engaging projection is calculated by the curvature of the curved surface of the engaging concave.
Both edges of the engaging recess are engaged and convex as a larger curvature.
To engage in line contact with the outer surface of the part
And a gap extending from the horizontal portion to the rising portion is retained between the groove cover and the step portion, and the engagement concave portion and the engagement convex portion are removed except for a line contact portion between the engagement concave portion and the engagement convex portion. A side groove and the groove cover, wherein the groove cover is positioned while keeping a slight gap between the groove and the groove.