JP2015127487A - Main member with perforated protrusion for grating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a main member with a perforated protrusion for a grating, which has a non-slip function provided in itself, and which can exert a non-slip effect without failure by securing an edge part.SOLUTION: A main member with a perforated protrusion for a grating includes: a strip-shaped steel upper plate part 2 that is arranged in a horizontal direction; steel side plate parts 3 and 3 that are each extended downward from both side edges 21 and 21 in a strip width direction of the upper plate part 2; and a steel perforated protrusion 4 that has a through-hole 40 vertically passing through the upper plate part 2 and that has a peripheral edge 41 of the through-hole 40 formed in a cylindrical shape to an upper side from a surface 2a of the upper plate part 2. The plurality of perforated protrusions 4 are provided away from one another in the longitudinal direction of the upper plate part 2.

Description

  The present invention is a grating (groove cover) that covers the upper surface opening of a drainage groove such as a kitchen or a side groove for rainwater, or a grid-like body (grating) of a floor panel for a clean room. About.

  For example, there is a grating that covers the upper surface opening of the drainage groove of the kitchen, but since water is used in the kitchen, there is a problem that the operator can easily slip. For these reasons, an improved invention for preventing slipping has been proposed (for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-1801

However, as described in claim 1, Patent Document 1 discloses that “... the upper part protrudes from the gap (100) for passing water and is higher than the upper surface of the main bar (110) at a required position between the main bars (110). And a non-slip member (2) that is detachably attached so as to be, ”and requires a non-slip member (2) separate from the main bar and the connecting means. The number of parts increased, and the assembly of gratings was also troublesome.
A main member ba with a convex portion for grating as shown in FIG. 10 is also invented, wherein the upright portion g and the upper plate portion f have a T-shaped cross section, and the upper plate portion f is provided with a non-slip and simplified even after assembly. Yes. However, it is the convex part eb by embossing, and since this convex part eb has protruded gently on the upper surface of the main member ba, it does not come to fully exhibit the function as a stopper. Due to the embossing, the convex part eb is rounded and raised on the upper surface of the upper plate part f as shown in FIG.

  The present invention solves the above-mentioned problems, and provides a main member with a perforated projection for grating that has a non-slip function on the main member itself, and that can secure an edge portion and exhibit any anti-slip effect. With the goal.

In order to achieve the above object, the gist of the invention described in claim 1 is that a strip-shaped steel upper plate portion (2) horizontally disposed and both side edges of the upper plate portion (2) in the band width direction ( 21, 21) steel side plate portions (3, 3) extending downward from each other, and the upper plate portion (2) has a through hole (40) penetrating in the vertical direction, the through hole (40 Steel perforated protrusion (4) formed in a cylindrical shape from the surface (2a) of the upper plate portion (2) to the periphery (41) of the upper plate portion (2), and the perforated protrusion (4) In the main member with a perforated projection for grating, a plurality of the upper plate portions (2) are provided apart from each other in the longitudinal direction.
The main member with perforated protrusions for grating according to the invention of claim 2 is the main member with perforated protrusions for grating according to claim 1, wherein the perforated protrusions (4) are integrally formed on the upper plate portion (2) by burring, and the perforated protrusions ( 4) It is characterized by the shape of a cylindrical frustum whose cross-sectional area gradually decreases upward.
The main member with a perforated projection for grating according to the invention of claim 3 is the one according to claim 1 or 2, wherein one of the side plates (3) extending downward from both side edges (21) of the upper plate (2). The side plate portion is formed as a wide side plate portion (3A) that extends downward from the other side plate portion and has a longer width (W) in the band width direction, and at least the wide side plate portion (3A) is provided with the connecting member (5). A through hole (30) to be penetrated is provided, and the connecting material (5) is formed in a lattice shape.
According to a fourth aspect of the present invention, there is provided a main member with a perforated protrusion for grating according to the second or third aspect, wherein the perforated protrusion (4) is integrally formed on the upper plate (2) by piercing burring, and the cylindrical cone The angle θ formed by the conical surface (45) related to the perforated protrusion (4) of the base and the surface (2a) of the upper plate portion (2) is in the range of 45 ° to 75 °.

(Function)
As in the first aspect of the invention, when the upper plate portion (2) is provided with the perforated protrusion (4), there is an edge around the through hole (40) of the perforated protrusion (4) that can be expected to have an anti-slip effect. Corners can be made. If the steel side plates (3, 3) extend downward from both side edges (21, 21) in the band width direction of the upper plate (2), the load on vehicles, pedestrians, etc. It will be able to withstand enough.
As in the second aspect of the invention, when the perforated protrusion (4) is formed by burring, a corner is automatically formed around the through-hole (40) by the processing. There is no need to make it. When the perforated protrusion (4) is in the shape of a cylindrical frustum whose cross-sectional area gradually decreases toward the top, a corner is formed at the perforated protrusion tip forming the through hole, The corners are exposed on the upper plate, and the anti-slip effect is fully demonstrated.
As in the third aspect of the present invention, one side plate portion related to the side plate portion (3) extending downward from both side edges (21) of the upper plate portion (2) extends downward from the other side plate portion. If the wide side plate portion (3A) is increased in length in the width direction (W), it will have an irregular groove shape by the wide side plate portion and the narrow side plate portion, and the bending characteristics due to the load of the main member with perforated projections The moment of inertia can be increased.
As in the invention of claim 4, when the perforated protrusion (4) is integrally formed on the upper plate (2) by piercing burring, the piercing burring is different from the normal burring, and the perforated protrusion is formed in one step. Since it can be manufactured, it leads to improved workability and productivity. When the angle θ formed between the conical surface (45) related to the perforated protrusion (4) and the surface (2a) of the upper plate portion (2) is in the range of 45 ° to 75 °, the perforated protrusion around the through hole At the tip, the corner portion of the projection having a “H” cross section is exposed on the upper plate portion, so that an even better anti-slip effect can be exhibited.

  The main member with a perforated protrusion for grating according to the present invention can be formed integrally with a main member, and can easily produce a corner with an edge having a high anti-slip function on the perforated protrusion. Has an effect.

1 is a partial perspective view of one embodiment of a main member with a perforated protrusion for grating according to the present invention. It is the II arrow directional view of FIG. (A) is a front view of the right half of the main member with perforated protrusions, (b) is a view taken along line II-II in (a), and (c) is a view taken along line III-III in (a). (A) is a plan view of grating using the main member with perforated protrusions of FIG. 1, and (b) is a view taken along line IV-IV of (a). FIG. 5 is a view taken in the direction of arrows V-V in FIG. 4. FIG. 4 is an explanatory cross-sectional view around a perforated protrusion in another mode instead of FIG. 2. (A) is a plan view around a perforated protrusion in another mode in place of FIG. 2, and (b) is a view taken along line VII-VII in (a). (A) is a plan view around a perforated protrusion of another embodiment instead of FIG. 2, and (b) is a view taken along the line VIII-VIII of (a). FIG. 4 is a cross-sectional view of another embodiment of the main member with perforated protrusions in place of FIG. (A) An explanatory perspective view of the prior art, (b) is a partially enlarged view of (b).

Hereinafter, the lattice board according to the present invention will be described in detail.
FIGS. 1-10 is one form of the main member with a perforated protrusion for grating of the present invention (hereinafter, also simply referred to as “main member” or “main member with perforated protrusion”). It is applied to the main member for grating that covers.
1 is a partial perspective view of the main member, FIG. 2 is a view taken along the line II of FIG. 1, FIG. 3 is a front view of the right half of the main member, and (b) is a line II-II of (a). (C) is a plan view of the grating using this main member, (b) is an IV-IV line arrow of (a). FIG. 5 is a view taken along the line VV in FIG. 4, and FIG. 6 is an explanatory sectional view around the perforated protrusion of another embodiment instead of FIG. 2, and is a longitudinal sectional view corresponding to FIG. 2. FIGS. 7 and 8 are plan views around a perforated protrusion in another form in which (a) replaces FIG. 2, and (b) is a view taken along arrows VII-VII and VIII-VIII in FIG. 9 is a transverse cross-sectional view of another embodiment of the main member with perforated protrusions in place of FIG. In FIG. 3 (a), in order to make the position of the notch 35 easy to understand, the main member 1 with a perforated protrusion in FIG.

  The main member 1 is a press-worked product using a steel plate made of carbon steel, stainless steel, or the like, and includes a steel upper plate portion 2, a steel side plate portion 3, and a steel perforated protrusion 4 (FIG. 1). . The upper plate part 2 in the form of a band in a plan view and the band-like side plate parts 3 and 3 extending downward from both side edges 21 of the upper plate part 2 in a side view in the longitudinal direction. Or “7” -shaped equi-section shape product. When the grating GR is used, the main member 1 is arranged so that the band width direction of the side plate portion 3 is raised. A plurality of perforated protrusions 4 are provided on the upper plate portion 2 of the metal processed product having a cross section in the longitudinal direction, and the through holes 30 and the notches 35 are provided on the side plate portion 3.

Specifically, from the side edges 21 in the band width direction of the upper plate portion 2 in a state where the surface 2a of the upper plate portion 2 in the plan view elongated rectangular shape is kept upward by bending and forming the belt-shaped steel plate. Let it be the main member which has the side-plate part 3 each extended below. In the present invention, “upper side” and “upward direction” refer to the main member 1 with a perforated protrusion in the state of use of the grating shown in FIG. 5 in which the upper surface opening 90 of the side groove 9 is covered with the grating GR. The upward direction, “downward”, and “horizontal direction” of the paper surface indicate the downward direction of the paper surface, the horizontal direction of the paper surface, and the lateral direction of the paper surface. In FIG. 5, reference numeral 91 denotes a side wall portion of the side groove 9, reference numeral 92 denotes a bottom wall portion, reference numeral 911 denotes a stepped portion that supports the grating GR, and reference symbol u denotes a flow path.
The main member 1 of the present embodiment includes an elongated rectangular strip-shaped upper plate portion 2 and side plate portions 3 extending vertically downward from both side edges 21 in the band width direction when the strip-shaped upper plate portion 2 is horizontally disposed. The side view is a number “7” shape as shown in FIG. A band width W1 extending vertically downward of one side plate portion 3 is longer than a band width W2 extending vertically downward of the other side plate portion 3. A wide side plate portion 3A in which one side plate portion 3 associated with the side plate portion 3 extending downward from both side edges 21 of the upper plate portion 2 extends downward from the other side plate portion 3 and the length W in the band width direction is increased. And Further, at least the wide side plate portion 3 </ b> A is provided with a through hole 30 through which the connecting material 5 passes. The narrow side plate portion 3 </ b> B that is the other side plate portion 3 is provided with a through hole 30 or a notch 35 at a position corresponding to the through hole 30. The narrow side plate portion 3 </ b> B here has a small width W <b> 2 as shown in FIG. 3 (a), and thus has a substantially semicircular or substantially U-shaped cutout 35 in which a lower portion of the through hole 30 is cut off. .

  The upper plate portion 2 has a through hole 40 penetrating in the vertical direction, and a perforation protrusion formed in a cylindrical shape from the surface 2a of the upper plate portion 2 to the periphery 41 of the through hole 40. 4 is provided. A plurality of the perforated protrusions 4 are arranged at a predetermined pitch apart from each other in the longitudinal direction of the upper plate portion 2. Specifically, the perforated protrusion 4 is formed into a cylindrical frustum shape that is integrally formed with the upper plate portion 2 by burring and has a cross-sectional area that gradually decreases upward. 1 to 5 is a cylindrical truncated cone. However, the present invention is not limited to this, and the cylindrical polygonal pyramids such as the cylindrical quadrangular frustum and the cylindrical pentagonal frustum shown in FIGS. It can be in the shape of a table. In the burring process, a hole is usually formed in the upper plate portion 2, a punch is pushed into the lower hole, and a hole-flange-shaped opening protrusion 4 that protrudes upward from the surface 2 a of the upper plate portion 2 is provided.

  Due to the burring process, the end face 49 of the plate thickness related to the main member is exposed around the upper surface opening 40a of the through hole 40 (FIG. 2). Then, unlike the embossed convex part eb having a gentle curve as a whole by embossing as shown in FIG. 10, it is a burring process, so that the corner E between the end face 49 and the conical surface 45 is bent as shown in FIG. Create a pointed edge. Moreover, the corner E formed on the protrusion tip 43 is exposed by surrounding the outer peripheral edge tip 43 of the upper surface opening 40a of the through hole 40, so that this edge is provided to a pedestrian walking from any direction on the grating. The formed corner E exhibits a non-slip effect.

  By the way, burring is generally used when a screw is to be raised or a pin or pipe is to be fitted, and a cylindrical flange having a substantially constant cylinder hole diameter in the cylinder length direction is formed. On the other hand, the perforated protrusion 4 of the present invention may be a cylindrical flange whose cylinder hole diameter is substantially constant in the cylinder length direction. However, as shown in FIG. 2, the cross-sectional area gradually decreases upward. It is more preferable to use a frustum shape. This is because the corner E of the perforated protrusion tip 43 stands in a cross-sectional “H” shape and a mountain shape as shown in FIG. Further, the perforated protrusion 4 has a cylindrical frustum shape in which the cross-sectional area gradually decreases upward, and the conical surface 45 of the perforated protrusion 4 is inclined to the upper plate portion 2. In this case, even if the heel of a pedestrian's shoe hits the conical surface 45, it slips there, making it difficult to crawl.

  Further, it is more preferable that the angle θ formed between the conical surface 45 of the cylindrical frustum-shaped perforated protrusion 4 and the surface 2a of the upper plate portion 2 is in the range of 45 ° to 75 °. When the angle θ formed with the surface 2a of the upper plate portion 2 is smaller than 45 °, one of the conical surfaces 45 forming the mountain-shaped corner portion E shown in FIG. Because it weakens. On the other hand, when the angle θ formed with the surface 2a of the upper plate portion 2 is larger than 75 °, the mountain-shaped corner portion E that forms the projection tip 43 shown in FIG. 2 is inclined outward to form the corner portion E. This is because the end face 49 on one side (the other side) approaches a shape of lying on the side. The conical surface 45 forming an angle θ with the surface 2a of the upper plate portion 2 in the present invention refers to the conical surface 45 of the cylindrical wall 42 excluding the base end portion 4R of the perforated protrusion 4. In the burring process, since a curved surface portion is formed in the base end portion 4R, the outer surface of the cylindrical wall 42 other than the base end portion 4R is defined as a conical surface 45 except for this portion.

  Here, the main member 1 with a perforated protrusion is an all-stainless steel processed product using a stainless steel strip, and the perforated protrusion 4 is integrally formed with the upper plate portion 2 by piercing burring even in burring. Is done. The burring process is basically a two-step process of drilling the lower hole and burring, and it is a three-step process when surface burring of the lower hole is added. Piercing burring can be completed in one step, which leads to improved productivity and is more preferable.

The size of the hole protrusion 4 can be selected as appropriate. For example, the hole diameter of the upper surface opening 40a associated with the through hole 40 is about 2 mmφ, the hole diameter of the lower surface hole is about 3 mmφ, and the height H of the hole protrusion 4 is The size is about 1 mm. A plurality of such perforated protrusions 4 are arranged on the upper plate portion 2 at a predetermined pitch in the longitudinal direction as shown in FIGS. In FIG. 4, the perforated protrusions 4 are arranged in a row in the longitudinal direction on the upper plate portion 2, but a plurality of rows, a staggered arrangement, or the like may be used.
In the main member 1 with a perforated protrusion in FIG. 3 (a), a through hole 30 is formed in the center of the plate surface of the wide side plate portion 3A and is opposed to the through hole 30 of the main member 1 with a perforated protrusion. A notch 35 is provided at the position of the narrow side plate portion 3B.

  A plurality of main members 1 with perforated protrusions including the upper plate part 2, the side plate part 3, the perforated protrusions 4, the through holes 30, and the notches 35 are prepared, and as shown in FIG. They are opened and arranged in parallel to each other to constitute the main member of the grating. While securing the width for the slit SL, the main members 1 with the perforated protrusions are spaced apart from each other in parallel, and a plurality of surfaces 2a (excluding the perforated protrusions 4) of the upper plate portions 2 are disposed on the same horizontal plane. . Further, the connecting member 5 is passed through the through holes 40 of the main members 1 with perforated protrusions to form a lattice, and then the side plates 7 are applied to both side end surfaces 19 of the main member 1 with perforated protrusions and fixed by welding. Thus, the desired grating is completed.

In the grating shown in FIG. 4, the wide side plate portion 3A related to the main member 1 with the perforated protrusions at both ends is arranged on the outside, and the end plate 6 is carried by the wide side plate portion 3A. A lattice-like body formed into a lattice shape by the member 1 and the connecting member 5 can be surrounded by a rectangular frame with the belt-like side plate 7 and the belt-like end plate 6 to form a grating. In the present invention, as shown in FIG. 4, a single connecting member is passed through each main member 1 with perforated protrusions to be regarded as a lattice shape. It is because the grating which forms a grid | lattice body is obtained by attaching the side plate 7 to the both end faces 19 of each main member 19 with perforated protrusions. Of course, a plurality of through holes 30 and notches 35 are provided apart from each other in the longitudinal direction in each main member 1 with a perforated protrusion, and a plurality of connecting members 5 are prepared, and the respective through holes 30 and notches 35 are provided. The connecting material 5 can be penetrated to form a lattice shape.
In the figure, reference numeral 2b denotes the back surface of the upper plate portion 2, reference numeral 38 denotes a lower end of the side plate portion 3, reference numeral 40b denotes a lower surface opening of the through hole 40, and reference numeral 46 denotes an inner wall surface of the perforated protrusion 4.

  Since the main member 1 with a hole projection configured as described above is integrally formed with the hole projection 4 having an anti-slip function by burring on the upper plate portion 2, no new member is required. Since the anti-slip perforated protrusion 4 is formed integrally with the upper plate portion 2 of the main member, inventory management, assembling work and the like are facilitated without increasing the number of parts as in Patent Document 1. In addition, unlike the non-slip member of Patent Document 1, the hole-opening protrusion 4 is made of steel such as carbon steel or stainless steel, and therefore has excellent durability. Stable anti-slip effect for a long time.

And it is a perforation protrusion which has the through-hole 40 penetrated to the upper-plate part 2 to an up-down direction, and the peripheral edge 1 of this through-hole 40 is formed in the cylinder shape from the surface 2a of the upper-plate part 2 to upper side Then, a corner E having a bending point can be formed around the through hole 40 as shown in FIG. Here, since it has a cylindrical frustum shape in which the cross-sectional area gradually decreases toward the upper side of the perforated protrusion 4, a corner portion is formed by a conical surface 45 and an end surface 49 at the tip 43 of the perforated protrusion 4. E can be done. The corner E around the upper surface opening 40a of the through hole 40 becomes an edge portion and exhibits an anti-slip effect. Since the plurality of perforated protrusions 4 are provided on the upper plate 2 so as to be spaced apart from each other, the corner E can be arranged over the entire upper plate 2 forming the upper surface of the grating.
In addition, unlike the convex eb with rounded embossing as shown in FIG. 10, if the perforated projection 4 of the cylindrical frustum is formed by burring, the area around the upper surface opening 40 a of the through hole 40 is formed. A desired corner portion E that becomes an edge portion can be easily produced by the conical surface 45 and the end surface 49 corresponding to the plate thickness of the main member. It is not necessary to produce the edge portion by post-processing or the like, the work load is small, and the main member 1 with the perforated protrusion can be produced at low cost.
Further, when the perforated protrusion 4 is made by burring, not only the perforated protrusion 4 but also the upper plate portion 2, the side plate portion 3, the through hole 30, the notch 35, etc. can all be produced smoothly by pressing.

Further, when the perforated protrusion 4 has a cylindrical frustum shape in which the cross-sectional area gradually decreases toward the upper side, an edge portion is formed at the front end 43 around the upper surface of the perforated protrusion 4. Since the mountain-shaped corner E is exposed, the anti-slip effect can be exhibited.
In addition, the angle θ between the conical surface 45 of the cylindrical frustum perforated projection 4 and the surface 2a of the upper plate portion 2 (excluding the perforated projection 4) is in the range of 45 ° to 75 °. And the conical surface 45 and the end surface 49 corresponding to the plate thickness of the main member, the corner E of the perforated protrusion 4 is formed with the edge portion having a “H” -shaped cross section facing upward. Because it can, it exhibits an excellent anti-slip effect.

  Furthermore, since the steel side plate portions 3 extending downward from both side edges 21 in the band width direction of the upper plate portion 2 are provided, unlike the case of the mere flat plate-like upper plate portion 2, the main plate with the perforated protrusions is provided. The member 1 has a high mechanical strength that can sufficiently withstand the load when a vehicle, a pedestrian, or the like passes through the member 1. More specifically, one side plate portion 3 related to the side plate portion 3 extending downward from both side edges 21 of the upper plate portion 2 extends downward from the other side plate portion 3 to increase the width direction length W. Since the wide side plate portion 3A is used, it has a deformed groove shape by the wide side plate portion 3A and the narrow side plate portion 3B, and the merit that the sectional secondary moment of the bending characteristic due to the load of the main member 1 with the perforated protrusion becomes large Have

Further, since the perforated protrusion 4 is integrally formed on the upper plate portion 2 by piercing burring, the perforated protrusion 4 can be processed in one step, which leads to further improvement in workability and productivity. In addition, if the main member 1 with perforated protrusions is an all-stainless steel product, the main member for grating that is rust-free, clean and beautiful in appearance, and lays in drainage grooves of kitchens and other places where importance is placed on the hygienic environment. It's perfect to hit. It is also suitable for a landscape-oriented building entrance, a side ditch 9 such as a park, and the like.
Thus, the main member 1 with a perforated protrusion for grating of the present invention is extremely useful because it exhibits the various excellent effects described above.

  The present invention is not limited to those shown in the above-described embodiment, and various modifications can be made within the scope of the present invention depending on the purpose and application. The shape, size, number, material, material, and the like of the main member 1 with the perforated projection 1, the side plate portion 3, the perforated projection 4, the connecting member 5, the side plate 7, etc. can be appropriately selected according to the application. The main member with a perforated protrusion for grating can be applied not only to a groove cover such as a drain groove for a kitchen or a side groove for rainwater described in the embodiment, but also to a grating (lattice) for a floor panel such as a clean room. Although the embodiment is the main member 1 with a stainless steel protrusion, it can of course be applied to a main member with an iron protrusion such as carbon steel.

2 Main member with perforated protrusion 2a Surface 21 Side edge 3 Side plate part 3A Wide side plate part 30 Through hole 4 Perforated protrusion 45 Conical surface 5 Connecting material W Wide direction length

Claims (4)

A strip-shaped steel upper plate portion (2) disposed horizontally and a steel side plate portion (3, 3) extending downward from both side edges (21, 21) in the band width direction of the upper plate portion (2). 3), and the upper plate portion (2) has a through-hole (40) penetrating in the vertical direction, and the periphery (41) of the through-hole (40) is connected to the surface (2a) of the upper plate portion (2). A steel perforated protrusion (4) formed in a cylindrical shape from the top to the upper side, and the perforated protrusion (4) is separated from each other in the longitudinal direction of the upper plate portion (2). A main member having a perforated projection for grating, wherein a plurality of holes are provided. The perforated projection (4) is integrally formed with the upper plate portion (2) by burring, and the cylindrical cone whose cross-sectional area gradually decreases toward the upper side of the perforated projection (4). 2. The main member with a perforated projection for grating according to claim 1, which has a shape of a table. One side plate portion related to the side plate portion (3) extending downward from both side edges (21) of the upper plate portion (2), extending downward from the other side plate portion, and the length in the width direction (W) The wide side plate portion (3A) becomes longer, and at least the wide side plate portion (3A) is provided with a through hole (30) that allows the connecting material (5) to pass therethrough, and the connecting material (5) forms a grid. The main member with a perforated protrusion for grating according to claim 1 or 2, wherein the main member is formed. The perforated protrusion (4) is integrally formed on the upper plate part (2) by piercing burring, and further the conical surface (45) and the upper plate part (2) related to the perforated protrusion (4) of the cylindrical frustum. The main member with a perforated projection for grating according to claim 2 or 3, wherein the angle θ formed with the surface (2a) is in the range of 45 ° to 75 °.

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