JP3466161B2 - Concrete gutter block - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved contact surface between a concrete gutter block and its lid.

[0002]

2. Description of the Related Art As a structure of a concrete gutter block, a packing is interposed at a contact portion between a gutter and a gutter lid to ensure close contact between abutting surfaces to absorb rattling of the gutter lid when a vehicle etc. gets on. To prevent the generation of noise (Japanese Utility Model Laid-Open No. 62-76280), the abutting portion between the gutter and the gutter lid is formed into a geometrically similar curved surface, and the noise is generated by riding on a vehicle or the like. And a gutter and a gutter lid are prevented from being damaged (Japanese Patent Laid-Open No. 6-248688), and the surfaces of the gutter and the gutter lid are inclined so that the gutter and the gutter lid are in line contact with each other, and the wedge effect This is to prevent the generation of noise caused by riding of a vehicle or the like and damage to the gutter and the gutter lid (utility model registration No. 3026678).
Publications, utility model registration No. 3031035) and the like are known.

[0003]

However, in the conventional method disclosed in Japanese Utility Model Laid-Open No. 62-176280, it is necessary to concretely place the packing on the gutter lid, which increases the number of working steps. On the other hand, when the packing is attached at the time of laying construction, the on-site work increases, the construction becomes complicated and the cost rises.

Further, in Japanese Patent Laid-Open No. 6-248688 and Japanese Utility Model Registration No. 3026678 and Utility Model Registration No. 3031035, a high precision mold is used for manufacturing the side groove and the side groove lid. Since the frame is required, the cost of manufacturing the mold increases, and further, the manufacturing yield decreases, which inevitably increases the overall cost.

According to the present invention, it is possible to manufacture a concrete gutter block at a low cost by using a mold which does not require high precision, and moreover, to absorb the distortion of the contact portion between the gutter lid and the gutter, and the like. This is to improve the adhesion to eliminate rattling and prevent noise from being generated even when an unbalanced load is applied to the lid.

[0006]

In order to achieve the above object, a plurality of horizontal ridges having crushable protrusions are provided in parallel and in a longitudinal direction on a part of a lid receiving surface and / or an abutting surface of a lid. A plurality of protrusions, which were formed at intervals and which had crushable tips, were scattered at other portions so that the lid did not rattle even when an unbalanced load was applied to the lid. Also, the lid receiving surface and /
Alternatively, a plurality of horizontal protrusions having crushable protrusions are formed in parallel on a part of the contact surface of the lid in parallel and at intervals in the longitudinal direction,
Vertical ridges were formed in the other parts so as to intersect the horizontal ridges so that the lid would not rattle even if an unbalanced load was applied.

[0007]

Embodiment 1 FIG. 1 is a perspective view of a gutter lid 1, and FIG. 2 is a sectional view showing a state in which the gutter lid 1 is fitted in a gutter 2. A plurality of horizontal ridges 12 are formed in parallel on the upper half of the curved side surface 11 of the gutter lid 1, and extend in the longitudinal direction of the groove. Side protrusion 12
Are not formed continuously in the longitudinal direction, but are spaced from each other. A plurality of protrusions 13 are formed on the lower half portion of the curved side surface 11 of the gutter lid 1 in a scattered manner. When laying, the gutter lid 1 is dropped from above the opening of the gutter 2 to both bearing surfaces. The weight of the gutter lid 1 is applied to the projections of the lateral projections 12 and the tips of the projections 13, and is crushed to form the collapsing portion 3.

Since the collapsing portion 3 is a crushed surface, it is a rough surface, and the friction between the rough surfaces increases the adhesion between the gutter 2 and the gutter lid 1. Further, even if the gutter cover 1 has a lot of distortion and backlash, the collapse of the tops of the projections of the lateral projections 12 and the tip ends of the projections 13 absorbs the backlash, and in addition, the fine pieces of concrete Since the collapsing material is present in the gap, the adhesion is further enhanced and rattling does not occur, so that it is extremely effective in a place where an unbalanced load acts on the gutter lid 1.

[0009]

[Embodiment 2] FIG. 3 is a perspective view of the gutter lid 1, in which a vertical ridge 14 is formed in the lower half portion of the curved side surface 11 in place of the protrusion 13 of the gutter lid of FIG. The horizontal ridges 12 parallel to the longitudinal direction are formed in the same manner as in FIG. 1, but the vertical ridges 14 are formed in the lower portion of the horizontal ridges 12 at appropriate intervals in a direction substantially perpendicular to the horizontal ridges. ing.

When the gutter lid 1 is placed on the bearing surface 21 of the gutter 2, the vertical ridges 1 below the curved side surface 11 of the gutter lid 1 by weight.
4 abuts the bearing surface 21 of the gutter 2 and the lateral projection 12
Since they also abut against each other, the tops of the projections of the ridges are crushed and partial collapse portions 3 are formed. The crushed collapsed surface becomes a rough surface, large friction can be expected, and the adhesion between the gutter 2 and the gutter lid 1 is enhanced.

Even if the contact surface between the gutter and the lid has a large amount of distortion, it can be absorbed by the collapse of the top of the convex portion, and since the disintegrated material intervenes in the gap, the adhesiveness increases and rattling occurs. Does not occur. Therefore, rattling is effectively prevented even in a place where an unbalanced load acts.

At the time of laying, the above-described operational effect is sufficiently obtained only by the weight of the gutter lid, but it is also effective to apply the weight of the vehicle to the lid through the tire or to press with the outrigger.

[0013]

EFFECTS OF THE INVENTION A plurality of lateral ridges having crushable projections and a plurality of protrusions having crushable projections are arranged so as to be scattered on the contact surfaces of a gutter and a gutter lid of a concrete gutter block. Also, because the vertical and horizontal ridges are arranged so as to intersect, the tops of the ridges of the ridges and the tips of the ridges are widely collapsed to absorb the distortion of the abutment surface, etc. To prevent noise and damage. Further, there is an advantage that a highly accurate mold is not required at the time of manufacturing and the manufacturing can be performed at low cost.

[Brief description of drawings]

FIG. 1 is a perspective view of a gutter lid according to a first embodiment.

FIG. 2 is a cross-sectional view of a side groove contact surface of the first embodiment.

FIG. 3 is a perspective view of a gutter lid of the second embodiment.

[Explanation of symbols]

1 gutter lid 12 Horizontal ridges 13 Protrusion 14 Vertical ridges 2 gutters 21 acceptance 3 collapse

Claims (2)

(57) [Claims] 1. A plurality of horizontal ridges having crushable protrusions are formed in parallel on a part of the lid receiving surface of the side groove and / or the abutting surface of the lid at intervals in the longitudinal direction, and the other portion. A concrete gutter block with multiple protrusions interspersed with crushable tips. 2. A plurality of horizontal ridges having crushable projections are formed in parallel on a part of the lid receiving surface of the side groove and / or the abutting surface of the lid at intervals in the longitudinal direction, and the other portion. Is a concrete gutter block in which vertical ridges are formed so as to intersect horizontal ridges.