JP3790412B2 - Gutter lid - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a side groove cover for closing a side groove provided along a road or a track, for example, a side groove cover for closing a side groove provided along a railroad rail to accommodate an electric cable or the like. .
[0002]
[Prior art]
Conventionally, a concrete lid has been frequently used for this type of gutter lid so that it does not fly due to wind pressure or the like when passing through a train. However, because of its weight, various operations such as transportation, installation, and removal during maintenance and inspection cannot be easily performed, and it is impossible for one worker to perform these operations efficiently.
[0003]
Therefore, recently, a light weight side groove cover made of plastic has been proposed instead of a concrete side groove cover. For example, in JP-A-2000-87437, considering the viewpoints of weather resistance, impact resistance, economy, reuse of waste materials, etc., a thin plastic surface material that constitutes the surface portion of the lid and a back surface portion are provided. Each of the plastic thick-walled back materials is molded separately, and both are integrally fixed and disassembled by a fixing member, and the thin-walled surface material has better weather resistance and impact resistance than the thick-walled back material. A plastic side groove lid is disclosed which is molded using a raw material and has a predetermined gap between the thin surface material and the thick back material.
[0004]
[Problems to be solved by the invention]
However, in the case of the side groove lid formed of light weight plastic in this way, there is a possibility that it will be blown away by strong winds or the like when passing through the Shinkansen unless some measures are taken.
Also, the lid made of plastic has a problem that the lid surface is particularly slippery, and even if a convex pattern for preventing slipping is formed on the lid surface, it is still slippery when wet.
[0005]
Therefore, in view of the problems with such plastic side gutter lids, the present invention is intended to provide a side gutter lid that does not fly due to wind pressure or the like when passing through a train (Shinkansen) and has a non-slip surface. It is.
[0006]
[Means for Solving the Problems]
In order to solve this problem, the lateral groove lid of the present invention is provided with a weight member mounting recess into which a weight member is inserted on the top surface of the lid body made of plastic (hereinafter referred to as the lid top surface), and in the recess than the plastic. A heavy member having a large specific gravity was embedded so that its upper surface was exposed on the top of the lid . By forming the entire lid body from plastic in this way, it is possible to reduce the weight as compared with a conventional concrete side groove lid, and it is possible to easily carry, install, maintain and inspect. Moreover, by embedding a weight member, it can be adjusted to a weight that does not fly due to wind pressure or the like when passing through the Shinkansen. The slipperiness of the surface can be effectively suppressed. Therefore, the side groove cover of the present invention can be suitably used as a side groove cover provided along a road or a track, and particularly as a side groove cover provided along a Shinkansen rail.
[0007]
The weight member in the above configuration can be formed from a weight member having a specific gravity greater than that of plastic, such as concrete, metal (for example, aluminum alloy), ceramics (including bricks and ceramics), stone, and the like. From the viewpoint of slipping difficulty and strength, it is preferable to use a mold made of concrete.
[0008]
The weight member is preferably embedded so that the upper surface slightly protrudes from the lid top surface. If the weight member is arranged in this way, the slipperiness of the lid surface can be further suppressed. However, the present invention is not limited to such a configuration, and the upper surface of the weight member may be slightly depressed from the top surface of the lid, or may be disposed so as to be flush with each other.
[0009]
Further, in the above configuration, a recess or groove as a weight member mounting recess is provided in the top surface of the lid main body, and an engagement portion is formed on the inner wall of the recess or groove, while the engagement with the side surface of the weight member. The weight member can be embedded in the top surface of the lid so as to provide an engaging portion that can be engaged with the portion. Here, the concave portion has a bottom surface, whereas the groove portion has a bottom surface. The present invention is not limited to such a weight member mounting structure, but if the weight member is mounted in this manner, the weight member can be mounted so as not to come out with a very simple structure.
[0010]
Furthermore, a spring support structure capable of supporting the weight member with elasticity can be provided in the recess or groove. Specifically, for example, a U-shaped groove is provided in the bottom surface of the recess, and the spring support structure can be configured by forming an elastic support piece by raising the groove. Alternatively, a separate spring member can be prepared, and the weight member can be elastically supported via the spring member.
If the weight member is configured to elastically support in this way, not only can the pedestrian feel a feeling of being pushed back by the weight member when the lid surface is stepped on, but the weight member is projected from the top of the lid. Even if it is disposed, the weight member can be sunk when a load is applied, so that the carriage or the like can run smoothly.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described based on examples.
[0012]
As shown in FIGS. 1 to 3, the gutter lid 1 according to one embodiment of the present invention includes a plastic lid body 2 and five concrete bars embedded in the lid top surface 4 of the lid body 2. It is comprised from the material 3.
[0013]
The lid main body 2 is formed by integrally molding a plastic raw material. The lid top surface 4 is composed of a plate surface having an appropriate thickness, the five bar material mounting portions 5 provided in the lid top surface 4, the lid Lid side surfaces 6 and 6 hanging from the left and right sides of the top surface 4 and lid front and back surfaces 7 and 7 hanging from the vicinity of the front and rear end portions of the lid top surface 4 are provided.
As the plastic raw material forming the lid body 2, recycled plastic raw materials as well as unused plastic raw materials can be used. As a molding method, injection molding, blow molding, press molding, or other currently known molding methods can be employed.
[0014]
As shown in FIG. 2, the lid top surface 4 has a rectangular shape in a top view, and a bar material mounting portion 5 is provided in the lid top surface 4 at an appropriate interval in the longitudinal direction of the lid top surface.
[0015]
As shown in FIG. 2, the bar member mounting portion 5 is formed as a concave portion having a strip shape elongated in the lateral direction of the top view lid top surface, and the lid top surface 4 is depressed as shown in FIG. 3. The front, rear, left and right inner wall surfaces 5a, 5b, 5c, 5d (5d not shown) and the bottom surface 5e are formed. Furthermore, in each bar material mounting part 5, as shown in FIGS. 3-5, the lower end part of the front and back inner wall surfaces 5a, 5b facing in the longitudinal direction is cut into a rectangular shape, and the engagement hole part 8, 8, and U-shaped grooves are formed in the bottom surface 5e at two front and rear positions in the bottom surface 5e, and elastic support pieces 9, 9 are provided so that the U-shaped groove is raised from the bottom surface 5e by one step. It is.
[0016]
On the other hand, the concrete bar material 3 is a mold material (precast concrete) formed by molding ordinary concrete, lightweight aggregate concrete, cellular concrete or other concrete, and is approximately the same size as the bar material mounting portion 5 and is a bar material. Engagement projections 10 and 10 that can be inserted into the engagement holes 8 are provided at the lower ends of the front surface 3b and the rear surface 3b.
In addition, the kind of concrete in this case is not specifically limited.
[0017]
Further, in the concrete bar material 3, the engaging convex portion 10 is formed so that the vertical width thereof is smaller than the vertical width of the engaging hole portion 8, and the engaging convex portion 10 is formed in the engaging hole portion 8. It is formed to be movable in the vertical direction.
[0018]
As shown in FIG. 3, the concrete bar material 3 is inserted into each bar material mounting portion 5, and the engagement convex portions 10, 10 are fitted into the engagement hole portions 8, 8 and the elastic support piece 9. , 9 so as to be placed on top.
[0019]
In this mounted state, the bar member 3 is locked by the engagement of the engagement hole 8 and the engagement protrusion 10, and the upper surface of the engagement protrusion 10 is engaged by the elastic support piece 9. The bar 3 is pressed against the upper frame of 8 and the backlash is suppressed.
Further, in the normal state, the bar member 3 protrudes upward from the lid top surface 4 by the protruding amount of the elastic support pieces 9 and 9, and as shown in FIG. When applied, the elastic support pieces 9 and 9 are elastically bent downward, the bar material 3 sinks into the bar material mounting portion 5, and the upper surface 3a of the bar material 3 and the lid top surface 4 are flush with each other. When the pressing force disappears, the bar member 3 returns to the state of protruding from the lid top surface 4 again by the repulsive force of the elastic support pieces 9 and 9.
[0020]
The side groove lid 1 having the above-described configuration can be lighter than the conventional concrete side groove lid by disposing the concrete bar material 3 in the lid top surface 4, and wind pressure when passing through the train. The weight can be adjusted so that it does not fly away.
Further, by embedding the concrete bar 3 so that the upper surface 3a is exposed in the lid top surface 4, the slipperiness of the lid surface peculiar to the plastic lid can be suppressed. In addition, in this embodiment, the ease of slipping of the surface can be further suppressed by causing the concrete bar material 3 a to protrude beyond the lid top surface 4.
Further, by embedding the concrete bar material 3 in the lid top surface 4 at an appropriate interval, the strength of the side groove lid 1 as a whole can be increased.
Furthermore, the concrete bar material 3 is elastically supported by an elastic support piece 9 (spring support structure), so that a feeling of being pushed back when stepped on can be given to a pedestrian. Since the bar material 3 sinks and becomes flush with the lid top surface 4 when riding on the vehicle 3, the cart or the like can run smoothly.
[0021]
In the present invention, it is optional to form an anti-slip pattern on the top surface 4 of the lid, the upper surface 3a of the bar member 3, and the like.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of a side groove cover according to an embodiment of the present invention.
2 is an exploded perspective view of the side groove cover of FIG. 1. FIG.
FIG. 3 is a longitudinal sectional view of the side groove cover of FIG. 1;
4 is a perspective view of a main part showing a state in a mounting portion of the side groove cover of FIG. 1;
5 is a longitudinal sectional view showing an operation when a force is applied from above to the side groove cover of FIG. 1. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Side groove cover 2 Cover body 3 Bar material 4 Cover top surface 5 Bar material mounting part 8 Engagement hole part 9 Elastic support piece 10 Engagement convex part

Claims (4)

A weight member mounted on the top of the lid body made of plastic is provided with a spring support structure inside which is a recess into which the weight member is inserted and the weight member engages and a spring support structure that can elastically support the weight member. A weight member having a concave portion and having an engaging portion engageable with the engaging portion on the side surface and having a specific gravity greater than that of the plastic, the upper surface of the weight member being exposed from the top surface of the lid body, the weight member mounting concave portion. Side gutter lid having a structure embedded in a place . The gutter lid according to claim 1, wherein the weight member is a concrete mold. The side groove cover according to claim 1 or 2, wherein the weight member is embedded so that the upper surface of the weight member slightly protrudes from the top surface of the lid body. The spring support structure has a configuration in which a U-shaped groove is provided in the bottom surface of the weight member mounting recess and an elastic support piece is formed by raising the groove. The side groove cover according to crab.

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