JP3378940B2 - Anti-slip surface structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a the slip prevention surface structure, specifically, the lid receiving frame or lid for surface embedding for closing the opening of the underground structure In the surface portion The present invention relates to an anti-slip surface structure capable of more effectively preventing a traveling vehicle, a person, and the like from slipping on the lid receiving frame and the lid.

[0002]

Conventionally, as a lid receiving frame and lid for ground buried adopting the anti-slip surface structure, as shown in FIG. 30 (a) and (b), distribution plan view true circular projection annularly A lid receiving frame 1'and a lid 10 'in which a plurality of protrusions formed in a row are provided in a protruding manner.
It has been known.

More specifically, inside the surface of the lid receiving frame 1 ',
A large number of perfect circular protrusions 2'are equally arranged on the circumference to form an annular protrusion group.

Further, on the outer periphery of the projection group formed by the perfect circular projection 2 ', a perfect circular projection 2 "is arranged in a ring shape at the center between the perfect circular projections 2'and 2', and further, On the outer periphery thereof, the perfect circular protrusion 2 ″ ″ is located at the center between the perfect circular protrusions 2 ″ and 2 ″.
Are arranged in an annular shape, so that a total of three rows of projections are arranged concentrically, and each true circular projection 2 ′, 2 ″,
The diameter of 2 ″ ″ gradually increases toward the outside.

Further, a large number of perfect circular protrusions 2'are equally arranged on the circumference of the outer surface of the lid 10 'to form a group of annular protrusions, and the perfect circular protrusions 2'are formed. Further, on the outer periphery of the projection group, the same perfect circular projections 2 ′ located in the center between the perfect circular projections are arranged annularly, so that a total of two rows of projection groups are concentrically arranged. There is. Here, each of the perfect circular protrusions 2 ', 2 ", 2"' is formed in a cylindrical shape by projecting from the base surface 5'of the lid receiving frame and the base surface 13 'of the lid.

[0006]

As described above, in the conventional lid receiving frame and lid for surface embedding, which adopt the anti-slip surface structure, the perfect circular protrusions 2 ', 2 ", 2"'"are provided. Has a perfect circular shape in plan view which is different only in surface area, and therefore, a group of projections formed by the perfect circular projections 2 ', 2 ", 2"' is arranged on the surface of the lid receiving frame 1'and the lid 10 '. The surface design is mediocre, and when tires of automobiles on roads, motorcycles, shoe soles of pedestrians on sidewalks, tires of bicycles, etc. pass over the lid receiving frame 1'and the lid 10 ', From which direction the shoe soles, etc. are round protrusions 2 ', 2 ", 2"'"
, 2 ″ ..., 2 ″ ″, which have no directivity in plan view, are evenly contacted with the circumferential edge thereof, so that each true circular projection 2 ′ …, 2 ″…,
The frictional resistance at the contact surface between the 2 ″ ′ ... Therefore, the lid receiving frame 1'and the lid 10 '
Due to the small surface roughness of the vehicle, there is a problem that a vehicle, a pedestrian, or the like slips on the upper surface thereof.

[0007] The present invention has been made in consideration of the conventional problems such as the above, to increase the surface roughness in the cover receiving frame or lid for land Table buried you includes a slip preventing surface structure, the lid receiving frame Or, by increasing the friction (slip) resistance on the contact surface with the tires, shoe soles, etc. that pass over the lid, the effect of preventing slipping of the vehicle, pedestrians, etc. on the lid receiving frame for land surface or on the lid is increased. The appearance is very lively,
An object of the present invention is to provide a lid receiving frame or lid for underground burying that is excellent in terms of design.

[0008]

In order to solve the above-mentioned problems, a slip-preventing surface structure according to the present invention has a lid receiving frame 1 or a lid 10.
With a number of part of the projection group formed by arranging projection or all made of amoeba-shaped projections 3 of a shape having a directivity in which a concave portion 4及beauty convex portion 8 on its upper surface to the surface of the candy
The bar-shaped protrusion 3 is the entire circumference except for the true circle in plan view.
Is a closed shape formed by connecting in a curved line, and the longitudinal centerlines of the amoeba-shaped projections 3 as the axes that determine the directionality of the amoeba-shaped projections 3 are adjacent to each other. So that they are different from each other, they are appropriately rotated about the midpoint of the center line. That is , a group of protrusions formed partially or wholly on the surface of the lid receiving frame 1 or the lid 10 having an directional shape and partially including the amoeba-shaped protrusion 3 having the concave portion 4 and the convex portion 8 provided on the upper surface. Are formed in one or more rows in a substantially annular or radial shape , and the amoeba-shaped projection 3 has a perfect circular shape in plan view.
Except for the closed shape, the entire circumference is connected in a curved line,
The center lines in the longitudinal direction as axes that determine the directionality of the amoeba-shaped protrusions 3 are different from the center lines in the longitudinal direction of the amoeba-shaped protrusions 3 adjacent to each other. It is characterized by being rotated.

Here, "substantially annular" means that a large number of protrusions are scattered to form a series of shapes such as a circle or an ellipse, and further,
It also includes a ring or a part of a ring having a polygonal shape such as a triangle, a quadrangle, a pentagon, and a hexagon.
The shape of the lid receiving frame and the lid itself include polygonal shapes as well as circular and elliptical shapes.

Further, the "directional amoeba shape" is a closed shape in which a perfect circle is excluded in a plan view and the entire circumference thereof is connected in a curvilinear form. Egg shape, almost gourd shape, almost daruma shape, approximately 8 shape,
A substantially X-shaped, a Y-shaped, a substantially elliptical, an egg-shaped, a gourd-shaped, a substantially Daruma-shaped, a major axis as a longitudinal center line in a substantially 8-shaped and a substantially X-shaped, a substantially Y-shaped, a substantially A shape in which each axis in the star shape is curved.
The axis that determines the directionality means the long axis in each of the above-mentioned shapes (the longest axis in the substantially X-shape, the substantially Y-shape, and the substantially sea star shape).

In the anti-slip surface structure having the above-mentioned structure, a part of each of the projections forming one or more rows of projections arranged substantially annularly or radially from the center or the projections forming the projection group is formed. entirely, a shape having directionality, and the concave portion 4及beauty convex portion 8 with consists amoeba-shaped projections 3 provided on the upper surface, the axis is different from each other to determine the direction of the amoeba-shaped projections 3 Since they are arranged, the lid receiving frame 1
Alternatively, even if the tire of the vehicle traveling on the lid 10 or the shoe sole of a pedestrian is at any position on the lid receiving frame 1 or the lid 10, the tire surface, the shoe bottom, etc. are provided on the lid receiving frame 1 or the lid 10. There is a large number of amoeba-shaped projections 3 between them, and slip resistance increases, and a slip preventing effect is achieved.

That is, when a tire, a shoe sole or the like made of an elastic body is positioned on the lid receiving frame 1 or the lid 10, elastic deformation occurs in the tire and the sole due to the effect of the vehicle weight and the weight of a person. By sinking on the tire surface or the sole of the shoe at a position outside the upper surface of the amoeba-shaped protrusion 3, the depressed portions such as the tire surface or the sole of the shoe come into contact with the peripheral portions of many amoeba-shaped protrusions 3. The contact (slip) resistance in the horizontal direction is generated from the contact portion.

Here, in the lid receiving frame 1 or the lid 10 for surface embedding having the above-mentioned structure, since the amoeba-shaped projection 3 has directionality, the peripheral line of the peripheral portion of the amoeba-shaped projection 3 is true. Since it is longer than a circle and the circumferential length of the depressed portion such as the tire surface and the bottom surface of the shoe is increased, a larger contact (slip) resistance is generated and the slip prevention effect is enhanced. Further, the longitudinal center lines as axes that determine the directionality of the amoeba-shaped projections 3 should be different from the centerlines of the adjacent amoeba-shaped projections 3, so that each amoeba is centered on the midpoint of the centerline. Since the shaped protrusions 3 are appropriately rotated, the peripheral portion of the amoeba shaped protrusion 3 with which the tire surface, the shoe bottom surface, etc. come into contact with each amoeba shaped protrusion 3 ... And the relative distances of the amoeba-shaped projections 3 differ from one projection to another, and the depressions vary in various directions with respect to the tire surface and the sole of the shoe entering from one direction. Since it occurs with a certain distance, the tire surface, the shoe bottom surface, etc.
It is possible to obtain a larger friction (slip) resistance from.
Moreover, the the upper surface of amoeba-shaped projections 3 recess 4及beauty convex <br/> shaped portion 8 is provided, the action sinking said even the peripheral portion of the concave portion 4及beauty convex portion 8 since resulting friction between the tire surface and the shoe bottom, etc. What contact resistance and is coupled with the amoeba-shaped projections 3 and the contact resistance by the concave portion 4及beauty convex portion 8 (slip)
The resistance further increases, and a larger slip prevention effect can be obtained.

The anti-slip surface structure according to the present invention is
As set forth in claim 3, at least one row of the plurality of projection groups is provided from only the perfect circular projection 2 or from the polygonal projection 9 only, from the amoeba-shaped projection 3 and the perfect circular projection 2, or from the amoeba-shaped projection 3 and the polygon. From projection 9 or amoeba-shaped projection 3
It is possible to adopt a configuration including the round protrusion 2 and the polygonal protrusion 9. In other words, it is possible to adopt a configuration capable of exerting an optimum non-slip effect according to various conditions of various articles or structures by combining and arranging various protrusions. In the anti-slip surface structure having such a configuration, even if the protrusions forming the protrusion group are mixed with the round protrusions 2 and the polygonal protrusions 9 having a known shape, some of the protrusions forming the protrusion group are included. or all, concave portions 4及beauty to the upper surface
Since the amoeba-shaped projection 3 is provided with the convex portion 8, the contact (slip) resistance is increased by the effect of the amoeba-shaped projection 3 as compared with the case of only the perfect circular projection 2 or the polygonal projection 9 and the slip prevention effect. Also grows.

Further, the anti-slip surface structure according to the present invention comprises:
A structure in which a concave portion 4 is formed on the upper surface of the perfect circular protrusion 2 as described in claim 4, and a concave portion 4 or a convex portion 8 formed on the upper surface of the amoeba-shaped protrusion 3 or the perfect circular protrusion 2.
It is possible to employ a configuration in which the center of the is deviated from the midpoint of the longitudinal center line as the axis that determines the directionality of the amoebic projection 3 or the center of the perfect circular projection 2. In the anti-slip surface structure having such a configuration, even if the protrusions forming the protrusion group are mixed with the circular protrusions 2 having a well-known shape, the contact resistance of the concave portion 4 on the upper surface maintains the friction (slip) resistance. In the concave portion 4 or the convex portion 8 that is deviated from the center of the protrusion itself, the form of the peripheral portion of the protrusion changes variously to further increase the friction (slip) resistance with the tire surface, the shoe bottom surface, or the like. Therefore, a larger slip prevention effect can be obtained.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1A to 1C, reference numeral 1 denotes a circular lid receiving frame according to an example of the present embodiment, which is provided on the outer peripheral upper portion of a lid receiving step portion 1a provided on the inner periphery thereof.
A flange 5 having a concave upper surface is provided around the flange 5, and a large number of perfect circular projections 2 and amoeba-shaped projections 3 are provided on the surface of the flange 5. The perfect circular protrusions 2 or the amoeba-shaped protrusions 3 are arranged in a ring concentric with the lid receiving frame 1 while maintaining a mutual interval to form a row of protrusions.
A triple projection group is formed on the inner side, the center, and the outer side.

On the upper surface of the perfect circular projection 2 and the amoebic projection 3, the center of the perfect circular projection 2 or the center line Y of the longitudinal direction as an axis for determining the directionality of the amoebic projection 3 is deviated. Then, the concave portions 4 each having a perfect circular shape in plan view are provided.

The perfect circular protrusion 2 forming the inner protrusion group is a circular column shape having a perfect circular shape in plan view. Further, the amoeba-shaped projections 3 forming the central projection group are arranged on the outer side of the inner projection group, and are arranged on the line passing from the center of the lid receiving frame 1 to the middle of the adjacent perfect circular projections 2, 2. Therefore, the perfect circular projections 2 forming the inner projection group and the amoeba-shaped projections 3 forming the central projection group form a so-called staggered arrangement. Further, the amoeba-shaped protrusions 3 forming the outer protrusion group 3
Is arranged on a line passing through the center of the adjacent amoeba-shaped projections 3 and 3 forming the central projection group from the center of the lid receiving frame 1 outside the central projection group, so that the inner projection group The circular protrusions 2 forming the central portion and the amoeba-shaped protrusions 3 forming the outer protrusion groups are arranged in a staggered pattern.

Here, the amoeba-shaped projections 3 forming the outer and central projection groups have an egg-like shape in plan view similar to an ellipse as a directional shape, and project from the surface of the brim edge 5 in a columnar shape. In addition, the surface area of the amoeba-shaped projection 3 is gradually increased toward the outside as compared with the perfect circular projection 2.

Next, a method of arranging the amoeba-shaped projections 3 will be described in detail with reference to FIG. Adjacent amoeba-shaped projections 3 are arranged so that axes that determine their directivity are different from each other. Also in the example of this embodiment,
It is arranged so that the directionality is sequentially different. The amoeba-shaped projections 3 forming the outer and central projection groups, respectively, are the center lines in the longitudinal direction as axes that determine the directionality of the egg shape, that is, the long axes X of the amoeba-shaped projections 3 adjacent to each other. Are sequentially arranged so that the directions thereof are different from each other. More specifically, a line Z connecting the midpoint Y of the long axis X of the amoeba-shaped projection 3 and the center of the lid receiving frame 1 is centered. In contrast, they are sequentially rotated by a constant angle (36 degrees in this embodiment).

Therefore, since each amoeba-shaped projection 3 rotates on the line Z which rotates about the center of the lid receiving frame 1, the angle A1 is 36 degrees and the angle A2 is in the outer projection group.
Is 72 degrees, the angle A3 is 108 degrees, the angle B1 is 18 degrees (starting from 1/2 of 36 degrees), the angle B2 is 54 degrees, and the angle B3 is 90 degrees in the central projection group.
By rotating the amoeba-shaped projections 3 in the same manner and making one round around the surface of the lid receiving frame 1, the arrangement as shown in FIG.

In the embodiment showing the lid receiving frame 1,
An example of an amoeba-shaped protrusion 3 is a substantially egg-shaped one in plan view, which is similar to an ellipse, but an amoeba-shaped protrusion is a shape formed by continuously connecting the entire circumference except a perfect circle in plan view in a curved shape. 2 in FIG. 2, the longitudinal centerline is the long axis X.
Egg shape 3 and a substantially oval shape 3a
Approximately Daruma-shaped as b, approximately Gourd-shaped as 3c, 3d
And the substantially egg shape 3, the substantially oval shape 3a, the substantially daruma shape 3b, the substantially gourd shape 3c, and the substantially 8 shape 3d in which the major axis X is bent in a curved shape.
i, a substantially X-shaped 3j, a substantially Y-shaped 3k, and a substantially star-shaped 3l formed by bending a plurality of axes respectively into curved shapes, and an original amoeba-shaped 3n projection that freely changes the outer peripheral line, Further, the axis that determines the directionality of the protrusion means the major axis X (the longest axis in the substantially X-shaped 3j, the substantially Y-shaped 3k, the substantially sea star-shaped 3l and the amoeba-shaped 3n) in each of the above shapes, and The midpoint Y of the long axis X forms the center of each amoebic projection 3. A concave portion 4 or a convex portion 8 is provided on the upper surface of each of the amoebic protrusions, as shown in FIG.
Like amoeba-shaped protrusions 3f, 3h, 3k, 3l, 3n
The concave portion 4 and the convex portion 8 are provided separately from each other, for example,
As shown in FIG. 5 which will be described later, the concave portion 4 is further provided on the convex portion 8.
Be those kicked, its planar shape, for example, a perfect circle, substantially oval, substantially elliptical, substantially potbelly-shaped, substantially gourd-shaped, shaped substantially 8, substantially arcuate, substantially X-shaped, Ya substantially Y-shaped There are original amoeba shapes or their modified shapes.

3 (a) to 3 (d), a circular lid 1 is detachably engaged with a lid receiving step portion 1a of a lid receiving frame 1 for embedding on the ground.
0, the lid 10 is provided with a circumferential projection 12 projecting from the base surface 13 so that the surface is divided into four concentric circular areas and an innermost circular area. The rectangular area provided at the upper and lower portions of the third area from the inside serves as the character display section 11.

On the surface of the lid 10, an amoeba-shaped projection 3 having an egg shape in a plan view and having a convex portion 8 having a perfect circular shape in a plan view at the center of the upper surface is provided so as to project from the base surface 13. In the embodiment, in the second and fourth regions from the inside of the lid 10, the amoeba-shaped projections 3 are arranged in an annular shape that is concentric with the lid 10 while maintaining a distance therebetween to form a row of projections. To do.

Here, in the fourth region, the projection groups formed by the amoeba-shaped projections 3 are arranged in a total of double inside and outside, and the amoeba-shaped projections 3 forming the outer projection group are , The amoeba-shaped projections 3 forming the outer projection group are arranged on the line passing through the middle of the adjacent amoeba-shaped projections 3 formed by forming the inner projection group from the center of the lid 10.
... and the amoeba-shaped projection 3 forming the inner projection group,
It is a so-called Chidori array. Also, the inner and outer amoeba-shaped protrusions 3
Are similar to each other, but the surface area is larger on the outside.

Further, the amoeba-shaped projections 3 ... Are arranged so that the directionality thereof is different in the same manner as the lid receiving frame 1. Each of the amoeba-shaped projections 3 has an axis that determines the directionality of the egg shape, that is, the amoeba-shaped projections 3 whose major axes are adjacent to each other.
Are arranged in order so that the directions are different from each other, and more specifically, a line connecting the midpoint of the long axis of the amoeba-shaped projection 3 and the center of the lid 10 is defined. Ameba-shaped projection 3
The amoeba-shaped projections 3 ... Are arranged in a substantially annular shape by the line connecting the midpoint of the long axis and the center of the lid 10 rotating and moving at a constant angle.

Next, the form of the projection arrangement in the third region from the inside of the lid 10 will be described in the left half part and the right half part of FIG. First, the left half of FIG.
In (b) and (d), the amoeba-shaped projections 3c having a substantially gourd-shaped plan view and having a convex portion 8 having a substantially egg-shaped plan view are provided radially from the center of the lid 10. At the same time, the amoeba-shaped projections 3b, which are substantially daruma-shaped in a plan view, and which are provided with a convex portion 8 having a substantially daruma-shaped plan view on the upper surface, are also provided between the amoeba-shaped projections 3c ... Is an egg-shaped projection 3 which is substantially egg-shaped in a plan view and is provided with a convex portion 8 having a true circular shape in a plan view at a position deviated from the center on the upper surface thereof. The amoeba-shaped projections 3b and 3 are located radially from the center of the lid 10. Further, in the right half part (c) of FIG. 3 (a) and (c), the amoeba-shaped projection 3c, which has a substantially gourd shape in plan view and has a convex portion 8 that is substantially egg-shaped in plan view, is provided on the upper surface. Radially from the center of 10,
Further, they are arranged concentrically with the lid 10 by alternately reversing the directionality thereof while maintaining a space between them.

The lid receiving frame 1 or lid 10 for surface embedding according to the present embodiment, more Ri Do from the configuration, the amoeba-shaped projections 3
Instead of the concave portion 4 or the convex portion 8 on the upper surface, it will be described later, for example.
As shown in FIG. 5, the configuration in which the concave portion 4 and the convex portion 8 are provided is
While antislip surface structure adopted in the present invention is shall be formed, as an example of such a lid receiving frame 1 and the lid 10, produced by contact with the sole of the tire or the like or a pedestrian of a vehicle friction or slip resistance Aspects such as the above will be described below. Normally, vehicles, motorcycles, pedestrians, etc. pass over a frame with a lid (one whose lid is fitted to a lid receiving frame) installed on the road surface while running or walking, but in the middle of the frame with a lid. When passing through the car, passing through the edge, when drawing an arc at a corner, when the motorcycle passes through a curved section, and when the tire passes diagonally to the frame with a lid. Etc., there are various ways of passing through.

Corresponding to these various passage forms, as a measure for preventing slippage, the roughness of the surface of the frame with the lid is increased by the protrusions, and the contact area with the tire surface, the bottom surface of the shoe, etc. is increased to increase the friction. Increasing the (slip) resistance is mentioned. The non-slip action of the lid receiving frame 1 and the lid 10 for embedding on the surface according to this embodiment will be described below.

First, the projections forming a group of projections provided on the surfaces of the lid receiving frame 1 and the lid 10 are amoeba-shaped having a directivity in which a concave portion 4 or a convex portion 8 is provided on the upper surface, and the directivity thereof is changed. By arranging so that the axes to be determined are different from each other,
No matter which direction a vehicle, a pedestrian or the like enters into the lid receiving frame 1 or the lid 10, the directions of the amoeba-shaped protrusions and the concave portions 4 or the convex portions 8 on the upper surface thereof are in contact with the tire surface or the shoe bottom surface. Since each amoeba-shaped protrusion is different, the tire surface, the shoe bottom surface, and the like can receive sufficient friction (slip) resistance from the lid receiving frame 1 and the lid 10. In addition, the shape of the amoeba-shaped projection having a directional property in plan view, eg, egg-shaped 3 or substantially daruma-shaped 3
b, by being formed into a substantially gourd shape 3c or the like, the circumferential line of the peripheral portion of the protrusion becomes long, and the peripheral portion of the concave portion 4 and / or the convex portion 8 provided on the upper surface of the protrusion is surrounded. It also has the advantage that additional lines are added to make the overall circumference very long. The protrusion and the concave portion 4 or the convex portion 8
As shown in FIG. 2, the length of the circumferential line of the projection becomes longer as the planar shape of the projection is deformed from the egg shape 3 to the original amoeba shape 3n formed by freely bending the outer circumferential line. , 7'has a feature that the friction (slip) resistance is significantly increased.

Further, the amoeba-shaped projections forming the projection groups of the lid receiving frame 1 and the lid 10 are arranged in a so-called dendritic manner inside and outside, and their surface areas are different from each other, so that they are different from the tire surface, the sole of the shoe and the amoeba. Since the contact area with the shaped protrusion is increased and the contact angle is further changed, greater contact resistance and friction (sliding) resistance can be obtained. Since the surface roughness of the lid receiving frame 1 and the lid 10 is further increased by making the heights of the projection group or the projections themselves different, a sufficient non-slip effect can be obtained.

In the first place, the advantages of providing the projections on the surfaces of the lid receiving frame 1 and the lid 10 for embedding on the surface are as follows. As shown in FIG. 4 (a), when a tire, a shoe sole or the like made of an elastic body is located on the lid receiving frame 1 and the lid 10, the vehicle weight and the weight of a person act to elastically deform the tire and the sole. Occurs, and a subsided portion 6 is formed on the tire surface, the bottom surface of the shoe, or the like at a position off the upper surface of each protrusion.

Therefore, assuming that the traveling direction of a vehicle, a pedestrian, etc. is the A direction, the elastically deformed depressions 6 such as the tire surface and the bottom surface of the shoe are horizontally contact-resistant from the peripheral portion 7 of the upper surface of the protrusion. Upon receiving the force F, the contact resistance force F enhances the slip prevention effect.

Further, as shown in FIGS. 4C and 4D,
By forming the concave portion 4 or the convex portion 8 on the upper surface of the amoeba-shaped protrusion 3 or the perfect circular protrusion 2, the contact resistance force F is generated also in the peripheral portion 7 ′ of the concave portion 4 or the convex portion 8, Since the contact resistance with the tire surface, the bottom surface of the shoe, etc. is further increased, a larger slip preventing effect can be obtained.

The contact resistance force F is determined by the peripheral edge portion 7 of the upper surface of the protrusion.
And the length increases in proportion to the contact length of the concave portion 4 or the convex portion 8 with the peripheral edge portion 7 ′, but in the lid receiving frame 1 and the lid 10 of the present embodiment, the shape of the protrusion as described above and its The arrangement has the effect of increasing the contact resistance force F between the recessed portion 6 and the peripheral portions 7, 7 '. That is, FIG. 4 (b)
The amoeba-shaped projections having a concave-shaped portion 4 or a convex-shaped portion 8 on the upper surface in the arrangement as shown in FIG. 3, a substantially daruma-shaped 3b and a substantially gourd-shaped 3c are provided on the tire, the sole or the like of A to H. The shape of the peripheral portions 7 ..., 7 '... which the tire surface, the shoe bottom surface, etc., contact even when entering from the direction of, differs from each amoeba-shaped projection, and the relative distance between each amoeba-shaped projection is different between the projections. Different from each other, the subsided part also occurs in various directions and at various distances, so that no matter which direction a vehicle or a person enters from, the tire surface, the bottom of the shoe, etc. The contact resistance force F can be sufficiently given.

Further, the tire surface, the shoe bottom surface, etc., which come into contact with the long peripheral edge portions 7, ..., 7 '... Since the resistance force is distributed, slip can be effectively prevented even in the lateral direction, and in particular, a tire or the like passes in an arc on the lid receiving frame 1 or the lid 10 installed at a corner. In addition, when the motorcycle passes through a curved section, skid can be effectively prevented when the tire touches the frame with the lid at an angle.

Further, as shown in FIGS. 5A and 5B,
Inside the upper surface of the amoeba-shaped projection 3 having a substantially egg shape in a plan view, a substantially egg-shaped convex portion 8 having a shape similar to the planar shape of the projection is provided so as to project, and its peripheral edge portions 7 and 7'have a stepwise cross section. It is also possible to form the eye-shaped concave portion 4 on the surface of the convex portion 8 while forming the convex portion 8 and in this case, even if the convex portion 8 on the upper surface is worn away by the passage of a vehicle or a person, the amoeba-shaped projection 3 is formed. The peripheral portion 7 of itself and the peripheral portion 7'of the concave portion 4 remain to maintain the slip prevention effect.

Further, as shown in FIGS. 5 (c) and 5 (d),
The planar shape of the convex portion 8 provided on the upper surface of the amoeba-shaped projection 3 is transformed into a shape in which the peripheral edge portion 7'is long (generally gourd-shaped in this figure), and the shape of the concave portion 4 is also the same. When deformed, the peripheral edge portions 7, 7'that come into contact with the tire surface, the shoe bottom surface, or the like increase at once, so that the surface roughness of the lid receiving frame 1 and the lid 10 becomes rough, and the non-slip effect becomes extremely high.

Further, the height of each of the perfect circular projections 2 or the various amoebic projections, or the height of the projections on the inner and outer circumferences formed by the perfect circular projections 2 or the various amoebic projections may be different from each other. In this case, a step is generated between the protrusions or between the protrusions, and contact resistance with the tire surface, the shoe bottom surface, or the like is also generated on the outer surface of the protrusion having a higher height, so that a larger slip prevention effect can be obtained. can get.

In the lid receiving frame 1, the protrusions forming the inner protrusion group are formed by the circular protrusions 2 ... Of known shape, but the upper surface thereof is deviated from the center of the circular protrusion 2 itself. By providing the concave portion 4 with this, even if the shape of the protrusion is a true circle in plan view, the contact (slip) resistance with the tire surface, the shoe bottom surface, etc. can be increased by the peripheral edge portion 7 '.

The lid receiving frame 1 and the lid 10 for embedding on the surface having the anti-slip surface structure are as described above, but the present invention is not limited to the above embodiment, and the number of amoeba-shaped projections or other projections and the like. The size and shape and the number of rows of projections formed by the amoeba-shaped projections or other projections can be arbitrarily changed according to the sizes of the lid receiving frame 1 and the lid 10, and the axis that determines the directionality of the amoeba-shaped projections can be changed. Specific method for arranging differently, and ridge body 1
The presence or absence of 2 and the method of dividing the surface area when the ridges 12 are provided do not matter, as long as they can be efficiently arranged on the surface of the lid receiving frame 1 or the lid 10. Is the intention of.

As shown in FIG. 6, the circular lid receiving frame 1 of the second embodiment is located inside, in the center of and outside the surface of the brim 5 provided on the outer periphery of the lid receiving step portion 1a.
A large number of projection groups each having one egg-shaped amoeba-shaped projection 3 arranged in a row are arranged radially from the center of the lid receiving frame 1, and the axes that determine the directionality of the adjacent amoeba-shaped projections 3 are different from each other. Each amoeba-shaped protrusion 3 is provided so as to project.
A concave portion 4 or a convex portion 8 having a perfect circular shape in plan view is provided on the upper surface of
Is provided so as to be displaced from the center of the amoeba-shaped projection 3 itself.

Further, the true circular protrusion 2 and the character display portion 11 are provided as needed and are not an essential condition. For example, the top surface of the concave portion 4 or the convex shape of the egg shape or the true circular shape in plan view. 7 (a) and FIG. 7 (a) in which a plurality of rows of annular projections formed only by the egg-shaped amoeba-shaped projections 3 provided with the shape-shaped portions 8 are provided, and the amoeba-shaped projections 3 are arranged in a so-called staggered pattern. As shown in (b), the shapes of the lid receiving frame 1 and the lid 10 as the third embodiment, and the lid receiving frame 1 and the lid 10 themselves are not limited, and, for example,
On the surface of the brim edge 5 formed in the shape of a rectangular frame, three groups of egg-shaped amoeba-shaped projections 3 or perfect circular projections 2 are provided in a substantially annular shape, and the top surface of the amoeba-shaped projections 3 each have a perfect circular shape in plan view. As shown in FIG. 8 (a), which is provided with the concave portion 4 or the convex portion 8, a rectangular lid receiving frame 1 as the fourth embodiment, and a ridge on the outer peripheral surface of the base surface 13 of the rounded corner rectangular plate. An egg-shaped amoeba shape in which the body 12 is projected in a circular shape and the surface is divided into corner-round frame-shaped regions, and the concave portion 4 or convex portion 8 having a spherical shape in a plan view is provided on the upper surface in the region. As shown in FIG. 8B, three protrusions formed by the protrusions 3 are provided in a substantially annular shape, and three character display portions 11 are provided inside the protrusion 12, and a rounded corner shape as the fifth embodiment. It is also possible to form the lid 10.

Next, an example of the amoeba-shaped projection that is required to have a directional shape will be described in another embodiment below. Sixth to Eighth Embodiments A circular lid receiving frame 1 is provided with three rows of protrusions having an annular shape on the inside, center and outside of the surface of the collar edge 5. 9A to 9C show the sixth embodiment, and the amoeba-shaped projection 3b 'forming the inner projection group is similar to a substantially daruma shape in which a circular part is bulged by a minute amount. In addition, the amoeba-shaped projections forming the central and outer projection groups are bulged in order toward the outside so that the central amoeba-shaped projection 3b has a substantially dull shape.
The outer amoeba-shaped protrusion 3c has a substantially gourd shape. The amoeba-shaped projections 3b ', 3b and 3c are provided with a concave portion 4 or a convex portion 8 similar to a substantially spherical shape in a plan view on the upper surface thereof.

FIGS. 10A to 10C show the seventh embodiment, and like the sixth embodiment, some of the protrusions forming the inner, central, and outer protrusion groups are sequentially directed outward. Although the protrusions are bulged, the protrusions on the outside as compared with the protrusions of the sixth embodiment are formed in a slender flat substantially daruma shape 3b, and the amoeba-shaped protrusions 3b ′, 3b are provided on the surfaces thereof. The configuration is such that a concave portion 4 or a convex portion 8 having a daruma shape in plan view, which is substantially similar to the planar shape of the protrusions 3b 'and 3b, is provided.

FIGS. 11A to 11C show the eighth embodiment, in which an amoeba-shaped projection 3m forming an inner projection group is formed.
Is formed by slightly bulging each of the circular facing portions, and the 3d 'forming the central group of protrusions and the amoeba-shaped protrusion 3d forming the outer group of protrusions are located outside the bulging portions. By gradually expanding toward one side, a substantially 8-shaped shape is exhibited. Here, the upper surface of the amoeba-shaped protrusion 3m is a true circle in a plan view, and the upper surface of the amoeba-shaped protrusion 3d 'is a concave portion 4 or a convex portion 8 of a substantially figure 8 shape in a plan view, and the upper surface of the amoeba-shaped protrusion 3d. Has a concave portion 4 which is a perfect circle in plan view
The convex portion 8 is provided.

In the shape of each amoebic projection shown in the sixth to eighth embodiments, each peripheral portion 7 is formed long, and the concave portion 4 or the convex portion 8 exposed on the upper surface thereof is formed.
Since the peripheral edge portion 7'is also varied, it has a large contact with the tire surface, the bottom surface of the shoe, and the like, and has the effect of increasing the friction (slip) resistance.

In the sixth to eighth embodiments, the other embodiment has been described by using the circular lid receiving frame 1, but the embodiment is not limited to this and the circular lid receiving frame 1 will be described later. The present invention can be similarly applied to a lid or other polygonal lid receiving frame or lid.

Next, various amoebic projections, perfect circular projections 2,
A specific arrangement method of the polygonal projections 9 and a mode of area division by the protrusions 12 will be described below with reference to other embodiments. Ninth to Thirteenth Embodiments A circular or substantially quadrangular lid receiving frame 1 or lid 10 in which adjacent amoeba-shaped projections are arranged such that axes that determine their mutual directions are different from each other. 12 (a) and (b)
Shows a ninth embodiment, in which the projection groups arranged on the surface of the lid receiving frame 1 or the lid 10 are both radially represented from the center of the lid receiving frame 1 or the lid 10, and the amoeba-shaped projections 3 exhibiting an egg shape. The upper surface is provided with a concave portion 4 or a convex portion 8 having a perfect circular shape in a plan view, and (a) has a group of seven amoeba-shaped projections 3 or pentagonal polygonal projections 9 arranged in a row alternately. , (B), in addition to the group of three amoebic projections 3 in one row, the three amoebic projections 3, the perfect circular projections 2 and the pentagonal or hexagonal polygonal projections 9 form three rows in one row. The projections are formed by sequentially changing the arrangement of the projections.

13 to 16 show a tenth embodiment, in which a plurality of groups of projections arranged on the surface of the lid receiving frame 1 are all represented in a substantially annular shape, and the surface thereof is formed by a ridge. It is divided. In FIG. 13, a substantially corrugated and projecting ridge body 12 and a ridge body 12a extending inside and outside the brim 5 are provided, and each is in the region and has a concave portion 4 having an elliptical shape in plan view on the upper surface.
Alternatively, only the egg-shaped amoeba-shaped projections 3 provided with the convex portions 8 are arranged, and FIG. 14 is provided with the zigzag and ridge-shaped projections 12, and the projections forming a row are flat on the upper surface. It is formed by alternately arranging the egg-shaped amoeba-shaped projections 3 and the perfect circular projections 2 provided with the concave portion 4 or the convex portion 8 of the visual jewel shape, and FIG. A corrugated ridge 12a is provided, and an array of projections is provided with an egg-shaped amoeba-shaped projection 3 or a substantially magenta-shaped amoeba-shaped projection in which an upper surface is provided with a concave portion 4 or a convex portion 8 that is a true circle in plan view. 15B is formed by sandwiching the perfect circular protrusion 2 and the polygonal protrusion 9 by 3e '. In FIG. 15B, a circling protrusion 12 and a protrusion 12a extending inside and outside the flange 5 are provided. Amoeba-shaped projection 3e ', which is in the area and has a substantially magenta shape,
In addition, the egg-shaped amoeba-shaped projections 3 located in the outer region 3
And pentagonal or hexagonal polygonal projections 9 form a projection group, and the amoeba-shaped projections 3 and 3e 'are provided with concave portions 4 or convex portions 8 each having a substantially spherical shape in a plan view, respectively, on the upper surfaces of the amoeba-shaped projections 3 and 3e'. FIG. 16 shows a corrugated ridge body 12 and a ridge body 12a extending inside and outside of the brim 5, and the row-shaped projection groups are egg-shaped amoeba-shaped projections 3 or substantially magenta-shaped amoeba-shaped projections. 3e 'or a substantially rhombic polygonal projection 9 is formed, and a concave portion 4 or a convex portion 8 having a true circular shape in plan view is provided on the upper surface of each amoebic projection 3 and 3e'.

FIGS. 17 to 19 show an eleventh embodiment in which the projection group arranged on the surface of the lid receiving frame 1 is a lid in which three projections located inside, in the center and outside are one row. A large number of rows are radially displayed from the center of the receiving frame 1, and the surface thereof is divided into regions by the ridges. FIG. 17
(A) is provided with a ridge body 12a extending inside and outside the brim 5, and a row in which the true circular protrusions 2 are sandwiched between the egg-shaped amoeba-shaped protrusions 3 and 3 and the true circular protrusions 2 and 2 have the egg-shaped protrusions. The rows sandwiching the amoeba-shaped projections 3 are alternately arranged, and the amoeba-shaped projections 3 are arranged.
17 is provided with a concave portion 4 or a convex portion 8 having a perfect circular shape in a plan view, and FIG. 17B shows a circumferential projection 12 provided with two egg-shaped amoeba-shaped projections 3. And a row of amoeba-shaped projections 3b which are gourd-shaped in plan view and 2
The rows of the pentagonal polygonal projections 9 and the octagonal polygonal projections 9 are alternately arranged, and the amoeba-shaped projections 3 and 3b are arranged.
The upper surface of the is a circular shape in plan view or a substantially gourd-shaped concave portion 4
Alternatively, the convex portion 8 is provided, and in FIG. 18, the ridges 12a extending inside and outside the collar edge 5 are provided, and the rows of the substantially amud-shaped amoeba-shaped projections 3e 'and the rows of the perfect circular projections 2 alternate. The amoeba-shaped projections 3e 'and the perfect circular projections 2 are arranged.
The upper surface of each is provided with a concave portion 4 or a convex portion 8 each having an elliptical shape in a plan view, and further, FIG. 19 is provided with a zigzag and ridge-shaped ridge body 12 to form two substantially spherical shapes. Amoeba-shaped projection 3e 'and egg-shaped amoeba-shaped projection 3 present
And a row of hexagonal polygonal projections 9 sandwiched between the substantially acupressure-shaped amoeba-shaped projections 3e 'and the egg-shaped amoeba-shaped projections 3 are alternately arranged, and the upper surface of each of the amoeba-shaped projections 3e' and 3 is arranged. Is provided with a concave portion 4 or a convex portion 8 having a perfect circular shape in plan view.

20 to 22 show a twelfth embodiment of the lid 10 having a circular shape or a rounded corner shape. In each case, a plurality of rows of projections arranged on the surface of the lid 10 are represented in a substantially annular shape, Is divided into regions by the ridges, and the character display portion 11 is provided substantially at the center. FIG. 20A shows the character display unit 11
From the outer edge to the outer edge, and a group of projections is provided with an amoeba-shaped projection 3 in the shape of an egg and a round projection 2 that alternate with the concave portion 4 or the convex portion 8 having a substantially gourd shape. 20 (b) is provided with a corrugated projecting strip 12 having a corrugated shape and a zigzag projecting strip 12a extending from the character display section 11 to the outer edge. Each of them is divided into 6 by the ridges 12a, and one of them is composed of a substantially magenta-shaped amoeba-shaped protrusion 3e and a perfect circular protrusion 2, and the other one is an egg-shaped amoeba-shaped protrusion 3 and a perfect circular protrusion. 2 and are formed by alternately arranging them in the inner and outer regions, and on the upper surface of each of the amoebic projections 3e 'and 3, a concave portion 4 having a perfect circular shape in plan view is formed.
Alternatively, the convex portion 8 is provided, and FIG.
From the outer edge to the outer edge of the ridged body 12a in a zigzag shape, and a group of protrusions is provided with an amoeba-shaped protrusion 3 in the shape of an egg having an amoeba-shaped concave portion 4 or a convex portion 8 provided on its upper surface. The hexagonal polygonal projections 9 are sandwiched in between, and FIG. 22 (a) is provided with a ridge-shaped ridge 12 and a ridge 12a extending from the character display portion 11 to the outer edge.
With each projection group is formed from a column of only columns and circularity protrusions 2 only amoeba-shaped projections, in the column only amoeba-shaped projections concave Hitomigata on its upper surface by the linear protrusion 12a <br /> Amoeba-shaped projection 3 having an egg shape and a convex portion 8
And (b) is a circumferentially-shaped ridge 12 and a character display part. 1
The ridges 12a extending from 1 to the outer edge are formed in a zigzag shape, and the first, third, and fifth rows from the inside of the projection group forming a substantially annular row are egg-shaped amoeba-shaped projections 3 or a substantially spherical shape. The second and fourth rows are formed by alternately arranging the polygonal projections 9 and the egg-shaped amoeba-shaped projections 3 or the substantially magenta-shaped amoeba-shaped projections 3e 'by the amoeba-shaped projections 3e'. , The pupil-shaped and arcuate concave portions 4 are formed on the upper surfaces of the amoeba-shaped projections 3 and 3e 'as in FIG.
Alternatively, the convex portion 8 is provided.

23 and 24 show a thirteenth embodiment, in which a large number of projections arranged on the surface of the lid 10 having a circular or substantially rectangular shape are radially arrayed from the center of the lid 10 and the surface thereof is shown. Is divided into regions by the ridges, and the character display portion 11 is provided substantially at the center. Further, the egg-shaped amoeba-shaped projections 3 and the substantially magenta-shaped amoeba-shaped projections 3e 'in the embodiment are respectively provided with a concave portion 4 or a convex portion 8 having a true circular shape in plan view. FIG. 23
In (a), a ridge 12a having a zigzag shape extending from the character display portion 11 to the outer edge is provided, and egg-shaped amoeba-shaped projections 3 and perfect circular projections 2 are alternately arranged to form a row.
Both of them are alternately arranged in the annular direction in the area, and FIG. 23B shows the circumferential projection 12 and the character display portion 1.
1, a ridge body 12a extending from the ridge body 12 to the outer edge is provided, and in the outer region, the substantially daruma-shaped amoeba-shaped projections 3b 'and the substantially hourglass-shaped polygonal projections 9 are alternately arranged. The egg-shaped amoeba-shaped projections 3 and the substantially hourglass-shaped polygonal projections 9 are alternately arranged in the region, and a concave portion 4 or a convex portion 8 having a substantially elliptical shape in plan view is formed on the upper surface of the amoeba-shaped projection 3b '. 24 (a) is provided with a ridge 12a extending from the character display portion 11 to the outer edge in a corrugated manner.
Rows of amoeba-shaped projections 3 and perfect circular projections 2 in the upper and lower areas, and rows of amoeba-shaped projections 3e 'and substantially circular projections 2 in the substantially spherical shape alternately in the left and right areas. In addition, the character display section 1 is arranged in FIG.
1. A ridge body 12a extending from 1 to a corrugated outer edge is provided, and an egg-shaped amoeba-shaped protrusion 3 and a polygonal protrusion 9 are provided in upper and lower regions.
Further, a row of the perfect circular projections 2 is arranged, and a large number of rows of the substantially amud-shaped amoebic projections 3e ', the polygonal projections 9 and the flat perfect circular projections 2 are arranged in the left and right regions. that's all
Second to thirteenth embodiments described (however, the eighth embodiment diagram
11 ameba-shaped protrusion 3d and the twelfth embodiment shown in FIG.
(Excluding amoeba-shaped protrusion 3)
Instead of the concave portion 4 or the convex portion 8 on the upper surface of
As shown in FIG. 5, a concave portion 4 and a convex portion 8 are provided.
The non-slip structure is adopted to form the anti-slip structure of the present invention.
It is something.

Fourteenth Embodiment FIG. 25 shows a lid receiving frame 1 as a fourteenth embodiment,
Without limiting the shape of each projection provided on the surface, various amoeba-shaped projections in a closed shape formed by continuously connecting the entire circumference intended by the present invention in a curved shape are arranged in a substantially annular or radial shape. In addition, various amoebic shaped concave portions 4 and / or convex shaped portions 8 are provided on the upper surfaces of various amoebic shaped protrusions.

In the above-described embodiment, the surface of each amoeba-shaped projection itself is a flat surface except for the concave portion 4 and the convex portion 8, but the present invention is not limited to this, and as shown in FIGS. The concave portion 4 and the convex portion 8 may be provided to have a step, and as shown in FIGS. 26C and 26D, all the corners exposed on the upper surface of the protrusion are rounded. May be. Furthermore,
As a planar shape of the concave portion 4 or the convex portion 8 provided on the upper surface of the protrusion, a perfect circle, a substantially egg shape, a substantially elliptical shape, a substantially dull shape, a substantially gourd shape, a substantially magenta shape, a substantially pupil shape, a substantially bow shape, an amoeba shape, etc. However, other arbitrary shapes can be freely changed.

In each of the above-described embodiments, the upper surface and the side surface of each of the amoeba-shaped projections and the like are relatively smooth surfaces. However, the surface is formed into an uneven surface such as a file. The slip prevention effect may be further enhanced. Further, in order to make the shape and pattern of the protrusion itself clear, for example, FIG. 4C, FIG. 5A, FIG.
As shown in (b), a caulking material 14 made of a colored resin or the like is used to form projections on the flange 5 surface of the lid receiving frame 1 or a part or all of the base surface 13 of the lid 10, and further on the concave portion 4 on the top surface of the projection. Also, coloring may be applied to the extent that the peripheral portions 7, 7'of the recessed portions are not filled. Here, the lid receiving frame or lid for surface burying includes all having a function as an opening / closing door for opening and connecting underground buried objects such as water and sewage, gas, electricity, and telegraph to the ground.

In the plurality of embodiments described above, the amoeba-shaped projections (3 to 3n) are regularly arranged in a certain group. For example, as a fifteenth embodiment, As shown in the upper left half of the lid receiving frame of No. 27, the amoeba-shaped projection 3 ′ formed by connecting the above-mentioned three egg-shaped amoeba-shaped projections 3 is arranged via the three egg-shaped amoeba-shaped projections 3. Alternatively, as shown in the lower part of the left half of the figure, an amoeba-shaped projection 3'formed by connecting two amoeba-shaped projections 3 is arranged through one egg-shaped amoeba-shaped projection 3 interposed therebetween. Further, as shown in the right half of the figure, an amoeba-shaped projection 3'or 3n 'formed by connecting or connecting an arbitrary number of egg-shaped amoeba-shaped projections 3 may be arranged at an arbitrary position. , Where each amoebic projection 3, 3'or 3n '
A concave portion 4 and / or a convex portion 8 is provided at an arbitrary position on the upper surface of the.

[0058] In addition, as a sixteenth embodiment, FIG.
As shown in (a) to (c), the peripheral portion of the amoeba-shaped protrusion 3n '
7 and concave portion 4 and / or convex portion 8 provided on the upper surface thereof
The concave portion 4 and / or the convex portion on the upper surface between the peripheral portion 7'of
A recess having a depth or height different from the depth or height of the portion 8
Provided with a convex portion 4'and / or a convex portion 8 "
is there. Here, the concave portion 4'and / or the convex portion 8 "
The surface is amoeba-shaped, as shown in Fig.
Short axis direction (XX direction in the figure) or length of the protrusion 3n '
Upward or downward in the axial direction (WW direction in the figure), or
It can also be formed on the inclined surface 15 'which can be bent. However,
The inclination direction of the inclined surface 15 'is the short axis direction or the long axis direction.
It is not limited and can be changed freely. or,
The upper surface of the amoeba-shaped protrusion 3n ′ has a concave portion 4 and a convex portion 8
It is also possible to provide it with an uneven shape. Also, the tenth
As a seventh embodiment, as shown in FIGS. 29 (a) and 29 (b).
Concave section 4, convex section 8, internal convex section 8 ', downward slope
Amoeba-shaped projection 3n 'in which surfaces 15 and 15' are present together
It is also possible to do it.

[0059] Incidentally, in the sixteenth and seventeenth embodiments
Explains the embodiment by exemplifying the amoeba-shaped protrusion 3n '.
As I have clarified, such a form is an amoeba-shaped protrusion that can be seen above.
It can be carried out on all occasions (3 to 3 l).

Furthermore, the ridges 12 and 1 in each embodiment
2a is not an indispensable condition, but by providing the ridges 12, 12a on the surface of various articles or structures to divide the area, in addition to the contact resistance due to the amoeba-shaped protrusions, the ridges 12, 12a The contact resistance due to the above-mentioned further acts, and a larger non-slip effect can be obtained, and various projections are orderly provided in the divided regions, which is excellent in design.

[0061]

As is evident from the foregoing description, anti-slip surface structure according to the present invention, the projection group formed by arranging a plurality of projections of a shape having a directivity in which a concave portion及beauty convex portions on its upper surface It consists of amoeba-shaped protrusions and the amoeba-shaped protrusions
Except for the perfect circle, the entire circumference should be connected in a curved line.
In the closed shape, the center points of the amoeba-shaped projections, whose longitudinal centerlines as axes that determine the directionality of the amoeba-shaped projections are adjacent to each other, should be different from each other so that the centerlines of the centerlines are different from each other. Part of each projection or projection group formed by appropriately rotating about the center and forming one or more rows of projection groups arranged substantially radially or radially from the center on the surface of the lid receiving frame or the lid for surface burying All of the projections that form the ameba-shaped projection having a directional shape, that is, an amoeba-shaped projection in which the length of the peripheral line of the peripheral portion is long, are formed on the upper surface of the amoeba-shaped projection. Also , since at least a double peripheral portion is exposed for each protrusion by providing a convex portion, when a tire, a shoe sole, or the like passes through, a sunk portion such as a tire surface or a shoe bottom that is generated in the peripheral portion is formed. The circumference is significantly increased and a large contact resistance is generated, which is sufficient. Since friction (slip) resistance can be obtained, it is possible to reliably prevent a tire, a shoe sole, or the like from slipping on the upper surface of the lid receiving frame or lid for embedding on the surface provided with the anti-slip surface structure. . Here, as the planar shape of the projection gradually changes from the substantially egg shape to the original amoeba shape that freely bends the outer peripheral line thereof, the length of the peripheral line of each peripheral portion that appears at least double and the As a result, the circumferential length of the depressed portion becomes long, and the friction (slip) resistance is significantly increased.

Further, the amoeba-shaped projections forming the group of projections are mutually oriented with respect to the longitudinal centerlines of the amoeba-shaped projections whose longitudinal centerlines as axes that determine the directionality of the amoeba-shaped projections are adjacent to each other. The amoeba-shaped projections and concave portions are in contact with the tire surface, the sole surface of the shoe, etc. regardless of the direction in which the tire, the sole, etc. pass, since they are rotated appropriately about the midpoint of the center line. Alternatively, the shape of the peripheral portion of the convex portion is different for each amoeba-shaped projection, and the relative distance between each amoeba-shaped projection is different for each projection. Because it occurs with various distances in various directions with respect to the bottom of the shoe,
The slip prevention effect can be further enhanced.

The anti-slip surface structure according to the present invention is
At least one row out of a plurality of projection groups provided with a perfect circular projection alone, a polygonal projection alone, an amoeba-shaped projection and a perfect circular projection, an amoeba-shaped projection and a polygonal projection, or an amoeba-shaped projection and a perfect circular projection. Since it can be configured with polygonal protrusions, even if protrusions of a well-known shape such as a perfect circle protrusion or a polygonal protrusion are mixed, some or all of the protrusions forming the protrusion group have concave portions on the upper surface or Since it is composed of amoeba-shaped projections provided with a convex portion, a larger contact (sliding) resistance can be obtained due to the action effect of the amoeba-shaped projections than in the case of only perfect circular projections or polygonal projections, and the slip prevention effect is also large. Become. Therefore, by combining and arranging the various protrusions, a surface structure having an optimum non-slip effect can be obtained according to the conditions of various installation locations.

Further, even in the case of the perfect circular protrusion, since the concave portion is provided on the upper surface thereof, even if the shape of the protrusion is a perfect circle in plan view, the peripheral portion of the concave portion causes the convex portion to be in contact with the tire surface, the shoe bottom surface or the like. Friction (slip) resistance can be preserved.

The concave portion or convex portion on the upper surface of the amoeba-shaped protrusion or the perfect circular protrusion has a center or a perfect circular protrusion whose center is the center of the longitudinal direction as an axis for determining the directionality of the amoeba-shaped protrusion. Since it is deviated from the center of, the relative distance between the concave portions or the convex portions also varies, and the contact resistance of each protrusion itself and the contact resistance at the peripheral portion of the concave portion or the convex portion have a synergistic effect. As a result, the friction (slip) resistance with the tire surface, the shoe bottom surface, etc. is further increased, and a larger non-slip effect can be obtained.

Further, the anti-slip surface structure according to the present invention is
The projections forming the projection group have a directional shape, for example,
Almost egg shape, almost oval shape, almost daruma shape, almost gourd shape,
A shape in which the major axis of the substantially 8-shaped shape, the substantially egg shape, the substantially elliptical shape, the substantially daruma shape, the substantially gourd shape, the substantially 8-shaped shape is curved, or a plurality of axes are respectively curved. In addition to adopting an amoeba-shaped protrusion having a substantially X-shape, a substantially Y-shape, a substantially sea star shape, or an original amoeba shape that freely changes the outer peripheral line, a concave portion of various shapes and Since the convex portions are provided and the axes that determine the directionality of the amoeba-shaped projections are arranged so that they are different from each other, the external appearance is very dynamic and excellent in design. Therefore, it also has the effect of increasing the purchasing will.

[Brief description of drawings]

FIG. 1 is a lid receiving frame for embedding in the surface relating to an embodiment of the present invention, in which (a) is a plan view, (b) is an enlarged view of part A in (a), and (c) is (b). FIG.

FIG. 2 is a plan view showing a specific example of “amoeba-shaped projections” constituting the anti-slip surface structure of the present invention, an axis determining the directionality thereof, and a midpoint.

FIG. 3 is a lid for burying the surface of the ground related to an embodiment of the present invention, in which (a) is a plan view and (b) is C in (a).
Enlarged view of the part, (c) is an enlarged view of the C ′ part in (a),
(D) is a DD enlarged end view in (B).

FIG. 4 shows a state in which the protrusions forming the protrusion group of one embodiment of the present invention are in contact with the tire surface, the shoe bottom surface, or the like. A state diagram in which a subsidence caused by elastic deformation has occurred, (b) is a positional relationship diagram between each protrusion and the entry direction of the tire or shoe sole, and (c) is contact with a protrusion having a concave portion on the tire surface or shoe bottom Then, the state diagram in which the depression due to the elastic deformation occurs, (d) is the state diagram in which the depression due to the elastic deformation occurs due to the contact of the tire surface, the bottom surface of the shoe, or the like with the protrusion having the convex portion.

FIG. 5 shows an “amoeba-shaped protrusion” having a concave portion on the upper surface of the convex portion according to the embodiment of the present invention, and (a) is a plan view,
(B) is a cross-sectional view of (a), (c) is another plan view,
(D) is a cross-sectional view taken along line L-L in (C) (a state diagram in which the tire surface, the bottom surface of the shoe, and the like have caused a depression due to elastic deformation).

FIG. 6 is a plan view of a lid receiving frame according to another embodiment of the present invention.

FIG. 7A is a plan view of a lid receiving frame, and FIG. 7B is a plan view of a lid, which are related to another embodiment of the present invention.

8A and 8B are plan views of a lid receiving frame and FIG. 8B are plan views of a lid, which are related to another embodiment of the present invention.

FIG. 9 is a lid receiving frame for embedding in the surface relating to another embodiment of the present invention, in which (A) is a plan view, (B) is an enlarged view of an E portion in (A), and (C) is (B). 6 is an enlarged end view of FF in FIG.

FIG. 10 is a lid receiving frame for embedding on the surface relating to another embodiment of the present invention, in which (A) is a plan view, (B) is an enlarged view of a G part in (A), and (C) is (B). HH enlarged end view in FIG.

FIG. 11 is a cover receiving frame for embedding in the ground according to another embodiment of the present invention, in which (A) is a plan view, (B) is an enlarged view of a portion I in (A), and (C) is a J in (B). -J enlarged end view.

12A and 12B are plan views of a lid and FIG. 12B are plan views of a lid receiving frame, which are related to another embodiment of the present invention.

FIG. 13 is a plan view of a lid receiving frame according to another embodiment of the present invention.

FIG. 14 is a plan view of a lid receiving frame according to another embodiment of the present invention.

[15] (a) and (b) is another embodiment of the present invention
The top view of the related lid receiving frame.

FIG. 16 is a plan view of a lid receiving frame according to another embodiment of the present invention.

[17] (a) and (b) is another embodiment of the present invention
The top view of the related lid receiving frame.

FIG. 18 is a plan view of a lid receiving frame according to another embodiment of the present invention.

FIG. 19 is a plan view of a lid receiving frame according to another embodiment of the present invention.

[Figure 20] (a) and (b) is another embodiment of the present invention
The top view of an associated lid.

FIG. 21 is a plan view of a lid according to another embodiment of the present invention.

22 (a) and 22 (b) are plan views of a lid showing another embodiment of the present invention.

[Figure 23] (a) and (b) is another embodiment of the present invention
The top view of an associated lid.

[Figure 24] (a) and (b) is another embodiment of the present invention
The top view of an associated lid.

FIG. 25 is a plan view of a lid receiving frame showing another embodiment of the present invention.

FIG. 26 is a view showing an example of “amoeba-shaped protrusions” arranged on the surface of the lid receiving frame or the lid in the embodiment of the present invention,
(A) and (C) are plan views, and (B) and (D) are front views.

FIG. 27 is a plan view of a lid receiving frame showing another embodiment of the present invention.

FIG. 28 2 shows another amoebic projection according to the present invention,
(A) is a plan view, (b) and (c) are W in (a)
-W end view, (d) and (e) are the same XX end views,
(F) and (G) are end views of the same Y-Y.

FIG. 29 2 shows another amoebic projection according to the present invention,
(A) is a plan view, (b) is a ZZ end surface in (a).
Fig.

FIG. 30 shows a conventional lid receiving frame for surface burying and its lid,
(A) is a plan view of the lid receiving frame, and (B) is a plan view of the lid.

[Explanation of symbols]

1 ... Lid receiving frame, 2 ... Round protrusion, 3 ... Amoeba-shaped protrusion, 4 ...
Recessed portion, 5 ... Collar edge, 6 ... Depression portion, 7, 7 '... peripheral portion, 8 ... Convex portion, 9 ... Polygonal protrusion, 10 ... Lid, 11 ... Character display portion, 12, 12a ... , 13 ... Base surface, 14 ...
Caulking material, X ... longitudinal centerline (long axis), Y ... midpoint of long axis X

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E02D 29/14 E03F 5/02 E04F 15/02 E04F 15/06

Claims (5)

(57) [Claims] 1. A lid receiving frame (1) or the lid concave portion into a number of part or all of the upper surface of the projection group formed by arranging a projection on the surface of (10) (4)及beauty convex portion (8) together consist of amoeba-shaped projections of the shape with the provided directionality (3), 該A
The meve-shaped protrusion (3) is not a perfect circle when seen in a plan view.
Of the amoeba-shaped projections (3) having a closed shape in which the entire circumference of the amoeba-shaped projections (3) are connected in a curvilinear manner and whose longitudinal centerlines as axes that determine the directionality of the amoeba-shaped projections (3) are adjacent to each other. An anti-slip surface structure characterized by being appropriately rotated about a center point of the center line so that the directions thereof are different from those of the center line. 2. The surface of the lid receiving frame (1) or the lid (10),
Shape having directionality, and a concave portion on the upper surface (4) comprises及beauty convex <br/> shaped portion (8) amoeba-shaped projection provided (3) a part or projection group is formed by all of 1 in a substantially circular or radial shape
The rows are formed in rows or more, and the amoeba-shaped protrusions (3) are flat.
Except for the perfect circle in plan view, the entire circumference is continuously connected in a curved shape.
In the closed shape, the center lines in the longitudinal direction as axes that determine the directionality of the amoeba-shaped protrusions (3) should be different in direction from the center lines in the longitudinal direction of the adjacent amoeba-shaped protrusions (3). , A non-slip surface structure which is appropriately rotated about a midpoint of the center line. 3. At least one row of a plurality of protrusion groups,
From a perfect circular protrusion (2) only or from a polygonal protrusion (9) alone or from an amoeba-shaped protrusion (3) and a perfect circular protrusion (2) or from an amoeba-shaped protrusion (3) and a polygonal protrusion (9) or an amoebic form Anti-slip surface structure according to claim 2, characterized in that it comprises protrusions (3), round protrusions (2) and polygonal protrusions (9). 4. The anti-slip surface structure according to claim 3, wherein a concave portion (4) is formed on the upper surface of the circular protrusion (2). 5. The direction of the amoeba-shaped protrusion (3) is defined by the center of the concave portion (4) or convex portion (8) formed on the upper surface of the amoeba-shaped protrusion (3) or the perfect circular protrusion (2). 4. The anti-slip surface structure according to claim 2, wherein the anti-slip surface structure is deviated from the center point of the center line of the longitudinal direction as the axis that determines the axis or the center of the perfect circular protrusion (2).