JP3848947B2 - Concrete lid side groove - Google Patents

Description

  The present invention relates to a concrete lid side groove used for drainage on the side of roadways, sidewalks, and various facilities.

  The concrete lid gutters used for drainage on the sides of roadways, sidewalks and various facilities, etc., drop the lid on the top depression step of the gutter body provided with drainage grooves, and the top depression step of the gutter body In general, it is placed so that the lower surfaces of the left and right sides of the lid are supported by the flat surface of the part, and the upper part of the drainage groove is closed. The side groove body and the lid are not flat due to deformation of the formwork, distortion during concrete curing (solidification) and poor finish, etc., and the top surface when the lid is placed on the top surface of the side groove body. Roughness is generated on the flat surface of the stepped portion, and noise is generated when a car or a person steps on it. Especially when it is installed on the side of a roadway with heavy traffic, the noise caused by the generation of the sound deteriorates the living environment, or the lid is displaced due to vibration or stepping, and the upper surface of the gutter body falls down. The gap between the stepped portions is excessively open, causing an accident such as an elderly person hooking a cane or a woman hooking a heel of a high heel on the gap.

  In order to solve the above-mentioned problems, the present inventor has presented a concrete lid side groove that is fastened with a bolt to the side groove main body with a bolt, and the generation of sound is caused by fixing the lid to the side groove main body. Although it was prevented and the lid was prevented from shifting, the gap between the upper surface stepped portion of the side groove body and the lid was kept constant, and the cause of the accident such as falling could be eliminated, There are many problems that cannot be reduced because there are many items to be manufactured and it takes time to mount and fix the drop lid. (See Patent Document 1)

  In addition, a side groove that does not generate noise is also disclosed in which the contact surface between the upper surface depression step portion of the side groove main body and the side groove lid is closely fitted by curved surface processing so that noise generated when passing an automobile or the like is prevented. However, because the upper surface depression step of the side groove lid and the side groove main body is fitted and contacted with an arcuate curved surface, when a load is applied to one end of the side groove lid, the other end of the side groove lid rotates. There is a risk of jumping as if moving. (For example, see Patent Document 2)

  Furthermore, a substantially square plate shape, a groove lid partially provided with a sloped portion that is obliquely cut off at the left and right lower corners in the longitudinal direction, and the upper surface depression step of the side groove body corresponding to the sloped portion of the groove lid A convex curved surface portion is formed on the portion so that the inclined surface portion and the curved surface portion are in line contact with each other, and an upper surface depression step portion of the side groove main body corresponding to a portion other than the inclined surface portion of the groove lid is an inward vertical surface A step formed by an upward lateral surface is formed with a gap between the lateral surface and the bottom surface of the groove lid so as to prevent noise caused by rattling of the groove lid and to prevent the groove lid from jumping up. The groove cover and the side groove are also disclosed, but the groove cover is not smart with a stepped and complicated shape, and when the groove cover rotates in the gap between the lateral surface of the side groove body and the bottom surface of the groove cover. There is a possibility that a striking sound is generated on the lateral surface of the side groove main body and the bottom surface of the groove lid. (For example, see Patent Document 3)

JP 2000-021168 A JP-A-6-248688 JP 2003-328425 A

  In view of the problems in the background art described above, the present invention reliably prevents vibrations, noise generated when the lid is stepped on, displacement of the lid offset, displacement of the lid when subjected to a biased load, and the like. An object of the present invention is to provide a concrete lid side groove that can be prevented in a simple and inexpensive manner, and to achieve the object.

In order to achieve the above object, the present invention is a concrete lid side groove formed by taking the following measures.
That is, in a concrete lid side groove formed by placing a lid on the top sink step, the top recess step on both the left and right sides of the side groove body and the contact portion of the lid are respectively an arc-shaped convex curved surface and a concave curved surface. Is formed in a substantially S-shaped curved surface, and is formed by engaging a substantially S-shaped curved surface formed in the drop lid with a substantially S-shaped curved surface formed in the upper surface depression step portion of the side groove body. It is a concrete lid side groove characterized by being placed.

  The engagement of the substantially S-shaped curved surface is such that the substantially S-shaped curved surface formed on the upper surface depression steps on the left and right sides of the side groove main body and the substantially S-shaped curved surface formed on the drop lid are convex curved surfaces. In contact with the boundary of the concave curved surface, and the convex curved surface other than the boundary is engaged with the concave curved surface with a slight gap, and is in line contact at the boundary between the convex curved surface and the concave curved surface. This prevents the generation of noise when the lid is stepped on, and even if a biased load is applied to one end of the lid, the convex curved surface and the concave curved surface engage to prevent the other end from jumping up. The

  Further, a substantially S-shaped curved curved surface and a concave curved boundary formed on the contact portion of the upper surface depression step on both the left and right sides of the side groove body and the drop lid are formed obliquely below the side groove center. The drop lid is held so as to be hard to slip into the upper surface depression step of the side groove body by making the boundary portion between the substantially S-shaped convex curved surface and the concave curved surface slant and make line contact with each other. Is placed firmly on the depression step of the gutter body without being displaced.

  The tangent angle of the boundary part of the substantially S-shaped convex curved surface and the concave curved surface formed in the contact part of the upper surface depression step part on both the left and right sides of the gutter body and the falling lid is 45 to 85 degrees with respect to the horizontal. It is effective that the contact of the boundary between the convex curved surface and the concave curved surface is brought into contact at a tangent angle at the contact point of preferably 45 to 85 degrees with respect to the horizontal.

  As described in the above means, according to the present invention, in a concrete lid side groove formed by placing a lid on the top drop step, the contact portion between the top drop step and the drop lid on the left and right sides of the side groove body is provided. A substantially S-shaped curved surface formed on a substantially S-shaped curved surface formed on the upper surface depression step portion of the side groove main body, each formed into a substantially S-shaped curved surface connecting arcuate convex curved surfaces and concave curved surfaces, respectively. -Shaped curved surface contacted at the boundary between the convex curved surface and concave curved surface of a substantially S-shaped curved surface, and with a slight gap between the convex curved surface and concave curved surface other than the boundary portion, Therefore, it is possible to prevent generation of sound when the contact between the stepped portion on the upper surface of the gutter body and the lid is in line contact with the boundary between the substantially S-shaped convex curved surface and the concave curved surface, and the lid is stepped on. Even if a biased load is applied to one end of the drop lid, the convex curved surface and the concave curved surface are engaged and the other end jumps up. Ri is an effect that it is blocked.

  Further, the boundary between the convex surface and the concave surface of the substantially S-shaped curved surface formed at the contact portion of the upper surface depression step on both the left and right sides of the side groove body and the lid is formed to be inclined downwardly from the center of the side groove. As a result, the boundary between the substantially S-shaped convex curved surface and the concave curved surface is in line contact with each other in an oblique state, and the falling lid is held so as to be difficult to slip into the upper surface depression step portion of the side groove main body. There is an effect that it is placed firmly on the upper surface depression step portion of the lens without being displaced.

  Furthermore, by forming the contact step between the stepped part of the side groove main body and the drop lid into a substantially S-shaped curved surface connecting the arcuate convex curved surface and the concave curved surface, the side groove main body and the drop lid have a smart and simple shape, It can be manufactured at low cost, and the lid is firmly held just by placing it, so it does not need to be fixed and does not require labor.

  The best mode for carrying out the present invention is a concrete lid lid side groove formed by placing a lid on the top drop step, and the contact portion between the top drop step and the drop lid on the left and right sides of the side groove body. Are formed in a substantially S shape in which an arcuate convex curved surface and a concave curved surface are connected to each other, and a substantially S-shaped curved surface formed on the top depression step portion of the side groove main body is formed in a substantially S shape. The curved surface is contacted at the boundary between the convex surface of the substantially S-shaped curved surface and the concave curved surface, and is engaged with the convex curved surface and the concave curved surface other than the boundary portion with a slight gap. The boundary portion between the convex curved surface and the concave curved surface of the substantially S-shaped curved surface formed in the contact portion between the upper surface depression step on both the left and right sides of the main body and the falling lid is inclined downward to the center of the side groove. Hereinafter, embodiments will be described based on the drawings.

  FIG. 1 is a perspective view showing an embodiment of a concrete drop lid side groove according to the present invention, in which a drop lid 2 is dropped into an upper surface drop step portion of the side groove main body 1 so that the upper surface of the side groove main body 1 and the upper surface of the drop lid are approximately. The side groove main body 1 is mounted on the left and right sides of the side groove body 1 and the contact portion of the drop lid 2 is formed with substantially S-shaped curved surfaces 3, 3, 4, 4. The drop lid 2 is mounted so that the substantially S-shaped curved surfaces 3 and 3 formed on the drop lid portions on the left and right sides are engaged with the substantially S-shaped curved surfaces 4 and 4 formed on the drop lid 2. Is placed.

  FIG. 2 is a cross-sectional view of the main part of the engagement of the substantially S-shaped curved surfaces 3, 3, 4, 4 formed at the contact portion between the upper-side depression step on the left and right sides of the side groove body 1 and the lid 2 As described above, the substantially S-shaped curved surface 3 formed on the upper surface depression step portion of the side groove main body 1 has a shape in which the arc-shaped convex curved surface 3 a and the concave curved surface 3 b are connected to each other. The formed substantially S-shaped curved surface 4 has a shape in which an arc-shaped convex curved surface 4a and a concave curved surface 4b are connected to each other, a boundary portion P between the convex curved surface 3a and the concave curved surface 3b, and the convex curved surface 4a and the concave curved surface 4b. In addition to the contact at the boundary P, the convex curved surface 3a and the concave curved surface 4b other than the boundary are provided with slight gaps S1 and S2 between the convex curved surface 4a and the concave curved surface 3b, so that the upper surface depression step and lid of the side groove body 1 are provided. The two contact portions are engaged with each other.

  The contact at the boundary portion P is a line contact between a curved surface and a curved surface, and the contact area is small and the contact (hit) is improved compared to the contact of a flat surface. Occurrence is prevented. The gaps S1 and S2 between the convex curved surface 3a and the concave curved surface 4b and between the convex curved surface 4a and the concave curved surface 3b reduce the contact area at the boundary portion P to improve the contact (hit) and are slightly less than 1 to 3 mm. As a small gap, a drop when a load is applied to one end portion of the drop lid 2 and a jump at the other end portion are prevented so as to be hardly felt.

  That is, when a load from above is applied to one end portion of the drop lid 2 (for example, the right end portion in FIG. 2), the contact of the boundary portion P is slipped, and the one end portion of the drop lid 2 slightly falls to form the convex curved surface 3a. The clearance S1 of the concave curved surface 4b is engaged so as to be closed, and the depression is prevented, and the clearance S2 between the convex curved surface 4a and the concave curved surface 3b at the other end is closed so as to be prevented from jumping up. Therefore, when the gaps S1 and S2 are made small, the falling and jumping of the lid 2 becomes slight, and it is not worthwhile to realize that the gaps S1 and S2 between the convex curved surface and the concave curved surface are sequentially opened from the boundary P to the outside. There will be no closing sound.

  Further, the substantially S-shaped curved surfaces 3 and 4 formed at the contact portion between the upper surface depression step portion of the side groove main body 1 and the drop lid 2 are such that the boundary portion P between the convex curved surface and the concave curved surface is inclined downward to the center of the side groove. The lid 2 is depressed on the upper surface of the side groove main body 1 by making the contact at the boundary P between the convex curved surface of the substantially S-shaped curved surfaces 3 and 4 and the concave curved surface P contact with each other. It is held firmly so as to be inserted into the stepped portion, and can be stably placed without displacement.

  Tangent line at the boundary portion P between the convex curved surface and the concave curved surface formed by engaging the substantially S-shaped curved surfaces 3 and 4 formed at the contact portion of the upper surface depression step portion of the side groove main body 1 and the drop lid 2 with an inclination. It is effective that the angle T is 45 to 85 degrees for contact.

  FIG. 3 is a perspective view of the side groove main body 1 formed as described above. The upper surface depression steps on the left and right sides of the side groove main body 1 are formed as substantially S-shaped curved surfaces 3, 3 connecting arc-shaped convex curved surfaces 3a, 3a and concave curved surfaces 3b, 3b, and the shape is smart. It is simple. As shown in FIG. 3A, the substantially S-shaped curved surfaces 3 and 3 are continuously formed in the longitudinal direction on the upper surface depression steps on the left and right sides of the side groove main body 1. As shown in (B), paragraph grooves 5, 5,... May be appropriately provided on the substantially S-shaped curved surfaces 3, 3 formed continuously.

  FIG. 4 is a perspective view of the drop lid 2, and an arcuate convex curved surface to be engaged with the substantially S-shaped curved surfaces 3 and 3 formed on the upper surface depression steps on the left and right sides of the side groove body 1. The substantially S-shaped curved surfaces 4 and 4 connecting the 4a and 4a and the concave curved surfaces 4b and 4b are formed in the longitudinal direction, and the shape is smart and simple. The drop lid 2 has a shorter length than the side groove main body 1, and a plurality of drop lids 2 are generally placed on the upper surface depression step portion of the side groove main body 1.

  The present invention can be used not only for drainage that is constructed and used on the sides of roadways, sidewalks, and various facilities, but also as a concrete side gutter and side gutter cover such as a water channel and a water channel.

It is a perspective view which shows the Example of the concrete drop lid side groove | channel which concerns on this invention. It is principal part sectional drawing which shows engagement of the upper surface depression step part of a side groove | channel main body, and the contact part of a drop lid. It is a perspective view of a gutter body. It is a perspective view of a drop lid.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side groove main body 2 Drop lid 3, 4 Substantially S-shaped curved surface 3a, 4a Arc-shaped convex curved surface 3b, 4b Arc-shaped concave curved surface 5 Paragraph groove P Boundary part S1, S2 Gap T Tangential angle

Claims (4)

  In a concrete lid side groove formed by placing a lid on the top sink step, the top recess step on both the left and right sides of the side groove body and the contact part of the lid have an arc-shaped convex curved surface and a concave curved surface, respectively. A substantially S-shaped curved surface formed on the drop lid is engaged with and placed on a substantially S-shaped curved surface that is formed in a continuous S-shaped curved surface. A concrete lid side groove characterized by being made.   The substantially S-shaped curved surface formed on the upper surface depression step on both the left and right sides of the side groove main body and the substantially S-shaped curved surface formed on the drop lid come into contact at the boundary between the convex curved surface and the concave curved surface. 2. The concrete lid side groove according to claim 1, wherein the concave curved surface and the concave curved surface are engaged with each other with a slight gap.   A substantially S-shaped curved convex surface and a concave curved boundary formed at the contact portion of the upper surface depression step on both the left and right sides of the side groove main body and the drop lid are formed obliquely below the side groove center. The concrete lid side groove according to claim 1 or 2, characterized in that   The tangent angle between the convex curved surface of the substantially S-shaped curved surface and the boundary of the concave curved surface formed at the contact portion of the upper surface depression step on both the left and right sides of the gutter body and the falling lid is 45 to 85 degrees with respect to the horizontal. The concrete lid side groove according to any one of claims 1 to 3, wherein

Images