JP6137926B2 - Main bar for grating, grating using the same, and manufacturing method of grating - Google Patents

Description

The present invention relates to a main bar for grating (hereinafter referred to as “main bar”), a grating using the same, and a manufacturing method of the grating.
More specifically, the present invention relates to a main bar that can reduce the number of components in manufacturing a grating and facilitates assembly, a grating using the main bar, and a manufacturing method of the grating.

Conventionally, gratings have been used as lids for indoor and outdoor drains and drains.
As a structure of such a grating, for example, as in the grating described in Patent Document 1, a main bar having a substantially T-shaped cross-sectional view including a horizontal portion that becomes the upper surface of the grating after assembly and a support leg portion that hangs down from the horizontal portion ( 4 (see FIG. 4 of Patent Document 1) are arranged in parallel at predetermined intervals, spacers are arranged between the main bars, and bolts are inserted and connected from the direction intersecting each main bar (Patent Document 1). 3 and 6).

JP 2010-261248 A

  However, since the grating of Patent Document 1 is composed of parts such as spacers, connecting bolts and nuts, and washers in addition to the main bar, the number of parts is large, and each part is not missing in order to assemble one grating. Need to be procured, and it takes time to manage it. Further, since the assembly work of the grating is performed by combining a plurality of parts, it takes time and labor to adjust the position of each part.

  The present invention has been devised in view of the above points. In manufacturing a grating, the number of components can be reduced, and a main bar that facilitates assembly, and a grating and a grating using the main bar. The object is to provide a manufacturing method.

The means of the present invention taken to achieve the above object are as follows.
The present invention relates to a horizontal portion, a support leg portion suspended from the horizontal portion, and an insertion hole protruding from one side surface of the support leg portion in a direction intersecting the support leg portion and penetrating from the tip to the other side surface of the support leg portion. A spacer portion formed at the tip of the spacer portion, and an insertion portion that can be inserted into the insertion hole by being deformed, and provided inside the insertion hole, and the deformation of the insertion portion is released. In this case, the main bar for grating is provided with a fitting portion that fits with the insertion portion.

  The present invention relates to a horizontal portion, a support leg portion suspended from the horizontal portion, and an insertion hole protruding from one side surface of the support leg portion in a direction intersecting the support leg portion and penetrating from the tip to the other side surface of the support leg portion. A spacer portion formed at the tip of the spacer portion, and an insertion portion that can be inserted into the insertion hole by being deformed, and provided inside the insertion hole, and the deformation of the insertion portion is released. A grating having a plurality of main bars for grating and a core rod inserted into the insertion hole in a connected state after each main bar is connected. It is.

  The present invention relates to a horizontal portion, a support leg portion suspended from the horizontal portion, and an insertion hole protruding from one side surface of the support leg portion in a direction intersecting the support leg portion and penetrating from the tip to the other side surface of the support leg portion. A spacer portion formed at the tip of the spacer portion, and an insertion portion that can be inserted into the insertion hole by being deformed, and provided inside the insertion hole, and the deformation of the insertion portion is released. A plurality of grating main bars having a fitting portion that is fitted to the insertion portion, and a step of connecting the main bars in parallel with each other after the main bars are connected. And a step of inserting a core rod into the insertion hole.

(Work)
The operation of the main bar and grating according to the present invention will be described.
The horizontal portion primarily receives the weight of a human or a vehicle by its upper surface.
The support leg part supports the weight received by the horizontal part, and supports the load by the bottom surface of the support leg part being in contact with the edge receiving part such as the drainage groove or the inner bottom part of the drainage basin.
Due to the combination of the horizontal portion and the support leg portion, there is an effect that these can cooperate to support a load from above.

The spacer portion forms a gap that allows water to flow between the support leg portion and the horizontal portion by keeping the distance between the adjacent support leg portions constant according to the protruding length.
The insertion hole formed in the spacer portion allows the core bar to be inserted into the insertion hole by connecting the plurality of main bars and then connecting the insertion holes of each main bar. By inserting the core rod, the grating constructed by connecting the main bars is improved in load resistance from the vertical direction.

  The insertion portion can be inserted into the insertion hole by being deformed. When the deformation of the insertion portion is released in the insertion hole, the insertion portion is fitted with a fitting portion provided inside the insertion hole. The adjacent main bars are connected by the fitting of this portion.

  The “fitting part” and “connecting element” referred to in the present specification and claims of the present application are not particularly limited in shape or structure, but those having a simple structure and high effect are preferable. Examples include a structure in which there is a recess in the insertion hole, and the insertion portion has a protrusion that fits into the recess, or a structure in which the unevenness is reversed.

  The “core rod” referred to in the present specification and claims of the present application is not particularly limited in its material and shape, but is mainly used for reinforcement. It is preferable that the material is a high material, and that the cross section is vertically long and has a shape resistant to load from the up and down direction during attachment, for example, a core rod made of stainless steel and the cross section is vertically long. Those having a rectangular shape are listed.

  According to the present invention, the number of parts required for manufacturing the grating can be reduced, and the management of the parts is not time-consuming. Further, since the assembly is easy, the working efficiency of the grating manufacturing is improved.

It is use condition explanatory drawing which shows the grating comprised by the main bar which concerns on this invention. It is the perspective view which showed the main bar which concerns on this invention from diagonally upward of the front side. It is the perspective view which showed the main bar shown in FIG. 2 from diagonally upward on the back side. It is the perspective view which showed the main bar shown in FIG. 2 from diagonally downward on the back side. FIG. 3 is a perspective explanatory view showing the main bar shown in FIG. 2 from obliquely below on the back side, and showing the insertion hole and the fitting recess located inside by a broken line. It is explanatory drawing which showed the assembly procedure of the main bar from the bottom face side, and explanatory drawing which expanded and showed the cross section of the fitting part after a connection in a circle.

  The embodiment of the present invention will be described in more detail with reference to FIGS. In addition, the code | symbol in each figure is attached | subjected within the range which reduces complexity and makes it easy to understand.

The grating 1 shown in FIG. 1 includes a plurality of main bars 2 connected in parallel and in parallel, and a core bar 3 inserted from a direction orthogonal to the connected main bars 2.
Hereinafter, each part of the grating 1 in this embodiment is explained in full detail.

(Main bar 2)
The main bar 2 is formed by integrally molding each part described later by an injection molding method, and is formed of a hard resin.
The main bar 2 includes a horizontal portion 21 that becomes an upper surface portion of the grating 1 after assembly, a support leg portion 22 that hangs down from the horizontal portion, two spacer portions 23 that project from one side surface of the support leg portion, and a tip of the spacer portion To the other side surface of the support leg part, and two insertion pieces 25 which are insertion parts provided at the front part of the spacer part. The main bar 2 has a shape in which the horizontal portion 21 and the supporting leg portion 22 are substantially T-shaped in cross section except for the portion where the spacer portion 23 is provided.

The center of the upper surface of the horizontal portion 21 is raised from the edge, and the raised portion 211 is formed over the longitudinal direction of the main bar 2.
Due to the presence of the raised portion 211, the horizontal portion 21 has a shape that is inclined downward toward the edge in the longitudinal direction, and the water guided by the inclination easily flows into the gap between the main bars 2. Further, the raised portion 211 causes a line contact state between the sole or the shoe sole and a water film is hardly formed between the upper surface of the horizontal portion 21 and the sole or the shoe sole. Occurs.

The support leg portion 22 has a vertically long plate shape and hangs from the center of the lower surface of the horizontal portion 21, and is formed over the longitudinal direction of the main bar 2.
One end side of each insertion hole 24 is opened on the other side surface (the side surface opposite to the spacer portion 23) of the support leg portion 22 (hereinafter, this portion is referred to as “opening portion 241”).

  A fitting recess forming hole 221 is provided at a position corresponding to the lower surface of the support leg portion 22 and the base end portion of the spacer portion 23. The fitting recess forming hole 221 is wider than the insertion hole 24 and orthogonal to the insertion hole, and a portion that is recessed from the inner wall of the insertion hole 24 at this orthogonal position becomes the fitting recess 222.

  The opening 241 has the same height as the insertion hole 24 (see FIG. 5), but its width is wider than the width of the portion of the insertion hole 24 that passes through the spacer 23, and Narrower than the width (see FIGS. 5 and 6).

  Each spacer portion 23 has a substantially semicircular cross-sectional view with a curved upper portion and a flat lower surface, and an insertion hole 24 in which the cross-sectional shape of the hole is a vertically long rectangle is provided in the protruding direction of the spacer portion 23. (In other words, the direction perpendicular to the longitudinal direction of the support leg 22).

  If the protrusion length of the spacer part 23 is the length which can form the clearance gap which can permeate | transmit water between the support leg part 22 and the horizontal part 21 of the two main bars 2 which adjoin after connection, needs of a consumer etc. For example, in the case of a device attached to an outdoor drainage groove, the gap between adjacent horizontal portions 21 after connection is about 6 mm or less (prevents high-heel heels and stroller casters from entering. It is preferable that the interval be equal).

  The other end side of the insertion hole 24 is opened at the distal end surface of each spacer portion 23 (detailed illustration and reference numerals of the opening portion are omitted), and two insertion pieces are provided at the mouth edge portion 242 of the opening portion. 25 is provided. Each insertion piece 25 is directly opposed across the opening at the tip of the spacer portion 23, with the rim 242 of the opening as the base end, and the tip side is extended in the extension line direction of the insertion hole 24. .

A fitting convex portion 251 that is a tapered convex portion that is tapered is formed at the tip of each insertion piece 25 outside (in other words, the side that contacts the inner wall of the insertion hole 24). Each fitting convex portion 251 is formed so that the lateral width including the sharp portion on the side of the fitting convex portion is wider than the width of the opening 241.
For this reason, in a state where no force is applied, each insertion piece 25 does not enter the opening 241, but each insertion piece 25 has flexibility or elasticity. The piece 25 is configured to be inserted into the opening 241 while being bent or deformed inwardly (that is, in the direction of the opposite insertion piece 25).

(Core bar)
The core bar 3 is a stainless steel bar of a required length whose cross-sectional shape is a vertically long rectangle, and the hole shape of the insertion hole 24 is such that it fits in the insertion hole 24 without gaps and can be inserted without great resistance. The height and the width are slightly narrower than those.

  In the present embodiment, the insertion piece 25 corresponds to an “insertion portion” in a means for solving the problem (hereinafter referred to as “problem solving means”), and the fitting recess 222 and the fitting protrusion 251 are: It corresponds to a “fitting part” in the problem solving means.

(Work)
The operation of the main bar 2 and the grating 1 will be described.
The insertion piece 25 of the other main bar 2 is inserted into the opening 241 of one main bar 2 while being bent or deformed. At this time, the spacer portion 23 is pushed in until the tip of the spacer portion 23 comes into contact with the side surface of the support leg portion 22 (see FIGS. 4 to 6. Note that the opening 241 is not visible in FIG. ).

  As described above, the width of the opening 241 is narrower than the width of the fitting convex portion 251, but the insertion piece 25 has flexibility or elasticity, and the fitting convex portion 251 has a tapered shape. Therefore, the insertion piece 25 can be easily inserted into the opening 241.

  In the insertion piece 25 deformed inward after insertion, the fitting convex portion 251 which is a convex portion formed in the insertion piece 25 reaches the position of the fitting concave portion 222 which is a concave portion formed in the inner wall of the insertion hole 24. Then, it is released from the pressing force and expands outward by elastic deformation (in other words, toward the inner wall side of the insertion hole 24), and the fitting convex portion 251 is fitted into the fitting concave portion 222. The adjacent main bars 1 are connected in a state where the respective insertion holes 24 are communicated.

  After the connection, a gap through which water can flow is formed between the support leg portion 22 and the horizontal portion 21 of the two adjacent main bars 2 by the spacer portion 23 existing between the support leg portions 22.

  In the same manner, the main bars 2 as many as necessary to obtain the required width are connected one after another, and finally the core bar is inserted into each insertion hole 24 that is in a state of communicating with each main bar 2 in the width direction. When 3 is inserted, the grating 1 is completed.

  By inserting the core rod 3, the grating 1 is improved in load resistance from the vertical direction. Furthermore, since the core rod 3 after insertion is sandwiched between the opposing insertion pieces 25, the insertion pieces 25 do not bend inward or deform due to the presence of the core rod 3. As a result, the fitting convex portion 251 and the fitting concave portion 222 are not disengaged unless a considerable traction force is applied.

  As described above, according to the main bar 2, the types of parts required for manufacturing the grating 1 are only the main bar 2 and the core bar 3, and the number of parts is small, so that the management of the parts does not take time. In addition, reduction of parts procurement cost and management cost can be expected.

  Further, the assembling work includes only the process of connecting the main bar 2 and the process of inserting the core rod 3 into the inserted insertion hole 24 after the connection, and there are fewer work processes than conventional grating manufacturing using a large number of parts. Since the work is easy, the working efficiency of the grating manufacturing is improved. In addition, the lack of skill in assembly work also contributes to improved work efficiency.

  In FIG. 1, the grating 1 is supported in such a manner that the bottoms of both ends of the support leg portion 22 are placed on the receiving portion of the drainage groove mouth edge. All the supporting leg portions 22 are in contact with and supported by the inner bottom portion.

  In the present embodiment, the fitting recess forming hole is provided at a position corresponding to the lower surface of the support leg portion and the base end portion of the spacer portion, and by providing at this position, the strength of the main bar is reduced (for example, the side surface of the spacer portion). In the case where the portion is thin and the strength against the load may be reduced).

  Further, the fitting recess according to the present embodiment employs a structure in which a fitting recess forming hole wider than the insertion hole is formed perpendicularly to the insertion hole from the lower surface of the support leg portion. Originally, it is difficult to form a recess in the inner wall of the insertion hole of the integrally molded product, or the number of steps for removing from the mold is increased. However, since the above structure is adopted, a fitting recess forming hole is formed in the mold. It is only necessary to provide a convex portion for the purpose, and the main bar after molding can be easily removed from the mold.

  In the present embodiment, the main bar has a shape that is substantially T-shaped in cross-sectional view, but is not limited thereto, and may be, for example, a shape that is substantially Γ-shaped in cross-sectional view.

  In the present embodiment, the main bar is formed of only a single hard resin, but is not limited to this. For example, polycarbonate, acrylic resin, polyethylene terephthalate, hard vinyl chloride resin, ABS resin, polystyrene , AES resin, polypropylene, or other resin, or other materials such as metal. Further, a reinforcing member such as a metal piece may be arranged in the main bar to increase the strength of the main bar.

  The main bar may be arranged with a soft resin in a part of its constituent parts. For example, when used in places where there are many opportunities to touch bare feet such as poolside or bathroom, only the upper surface of the horizontal part is covered with the soft resin. You may form as follows. As the soft resin, for example, various elastomers such as soft vinyl chloride resin, silicon resin, TPS resin, and nylon resin are preferably used, but the present invention is not limited to this, and other known resin materials are used. May be. As an aspect of the configuration of the main bar, the main bar may be integrally molded together with the base portion of the main bar (for example, a hard resin), or the molded main bar may be covered with a soft resin.

  In the present embodiment, the fitting recess forming hole is provided at a position corresponding to the lower surface of the support leg portion and the base portion of the spacer portion, but is not limited to this, and other directions in which the fitting recess can be formed. A hole may be drilled from.

  In the present embodiment, a section-shaped insertion piece is employed as the insertion portion, but the present invention is not limited to this. For example, the insertion portion is a cylindrical body having a notch of two or more required widths, It may be formed so as to be bent.

  In the present embodiment, the grating 1 is arranged so that the longitudinal direction of the main bar 2 extends horizontally in the short direction of the grating 1 (see FIG. 1), but is not limited thereto. If the main bar is formed in a long shape, it can be arranged so that the longitudinal direction of the grating and the longitudinal direction of the main bar coincide.

  Note that the main bar described in the problem solving means of the present specification has a first fitting portion provided on the outer periphery of the insertion portion whose fitting portion is on the inner wall side of the insertion hole, and a first fitting. A second fitting portion formed on the inner wall of the insertion hole, which is a position corresponding to the portion, and one of the first fitting portion and the second fitting portion is a concave portion, and the other is a convex portion. It may be a part.

  Further, the main bar described in the problem solving means of the present specification, the insertion portion is two or more insertion pieces extended from the edge of the insertion hole mouth, A tapered convex portion that is tapered toward the side of the insertion piece that comes into contact with the inner wall of the insertion hole is formed, and the fitting part inside the insertion hole inserts the insertion part into the insertion hole and moves to the other side surface of the support leg part. Each insertion piece is a recess formed at a position corresponding to the projection on the inner wall of the insertion hole in a state of being pushed in until the tip of the spacer portion comes into contact, and is inserted into the insertion hole after connecting adjacent main bars. May not be bent to the opposite side of the inner wall of the insertion hole.

  The main bar described in the problem solving means of the present specification or the main bar is made of a synthetic resin material in which the horizontal portion, the support leg portion, the spacer portion, the insertion portion, and the fitting portion are integrally molded with a synthetic resin material. It may be molded.

  A main bar described in the problem solving means of the present specification has a horizontal part, a support leg part hanging from the horizontal part, and a connecting element for projecting from a side surface of the support leg part and an adjacent main bar. The spacer part in which the penetration hole which penetrated the part was formed, and the penetration hole which can penetrate the core rod which penetrates the said spacer part and a support leg part may be provided.

  The terms and expressions used in the present specification and claims are for illustrative purposes only, and are not intended to be limiting in any way. The features described in the present specification and claims and their terms There is no intention of excluding some equivalent terms and expressions. It goes without saying that various modifications are possible within the scope of the technical idea of the present invention.

DESCRIPTION OF SYMBOLS 1 Grating 2 Main bar 21 Horizontal part 211 Raised part 22 Support leg part 221 Fitting recessed part formation hole 222 Fitting recessed part 23 Spacer part 24 Insertion hole 241 Opening part 242 Edge part 25 Insertion piece 251 Fitting convex part 3 Core rod

Claims (7)

A horizontal section;
A support leg hanging from the horizontal part;
A spacer portion that protrudes in a direction intersecting with the support leg portion from one side surface of the support leg portion, and has an insertion hole penetrating from the tip to the other side surface of the support leg portion;
An insertion portion having a flexible or elastic insertion piece disposed at the tip of the spacer portion , and a fitting convex portion provided on the insertion piece ;
A fitting recess forming hole formed in the lower surface of the support leg and the base end portion of the spacer;
A main bar for grating, comprising: a fitting recess forming hole and a fitting recess formed at a portion where the insertion hole intersects . A horizontal section;
A support leg hanging from the horizontal part;
A spacer portion that protrudes in a direction intersecting with the support leg portion from one side surface of the support leg portion, and has an insertion hole penetrating from the tip to the other side surface of the support leg portion;
A member that is flexible or elastic and extends from the lip portion of the insertion hole that opens at the distal end of the spacer portion, and is a cylindrical body that is open at the distal end side or a free end at the distal end side When the core rod, which is an object to be inserted, is inserted, the surface facing the core rod abuts the outer periphery of the core rod so that it cannot be deformed to the core rod side. And an insertion portion provided with a fitting convex portion on the outer peripheral side, and
A fitting recess formed in the insertion hole into which the fitting projection can be fitted.
Main bar for grating. The main bar for grating according to claim 1 or 2, wherein the horizontal portion, the support leg portion, the spacer portion, and the insertion portion are integrally formed of a synthetic resin material . The insertion piece is two or more members having the rim portion of the insertion hole opened at the distal end of the spacer portion as a base end, and the distal end side extending in the extension line direction of the insertion hole,
The grating main bar according to claim 1 , wherein the fitting convex portion is a tapered tapered convex portion formed on each of the insertion pieces . A spacer having a horizontal portion, a support leg hanging from the horizontal part, a protrusion projecting from one side of the support leg in a direction intersecting the support leg, and penetrating from the tip to the other side of the support leg. An insertion portion including a flexible or elastic insertion piece disposed at a distal end of the spacer portion and a fitting convex portion provided on the insertion piece, a lower surface of the support leg portion, and a base end portion of the spacer portion A plurality of grating main bars having a fitting recess forming hole, a fitting recess formed in a portion where the fitting recess forming hole and the insertion hole intersect,
A core rod inserted into each insertion hole in a communication state after connecting the main bar for each grating
Grating. Horizontal section, support leg depending from the horizontal portion, projecting from one side surface of said supporting leg in a direction intersecting the same support leg, spacer through hole is formed which penetrates from the tip to the other side of said support leg A member having flexibility, elasticity, and extending from an edge portion of the insertion hole opened at the distal end of the spacer portion, or a cylindrical body having an opened distal end side or a free end at the distal end side. When a core rod that is an object to be inserted is inserted, the surface facing the core rod abuts on the outer periphery of the core rod and cannot be deformed to the core rod side. And a plurality of gratings having an insertion portion provided with a fitting convex portion on the outer peripheral side and a fitting concave portion into which the fitting convex portion formed in the insertion hole can be fitted . And the main bar
Grating and a said core rod in which the inserted into the insertion holes in the communicating state after the main bar connection for each grating. Horizontal section, support leg depending from the horizontal portion, projecting from one side surface of said supporting leg in a direction intersecting the same support leg, spacer through hole is formed which penetrates from the tip to the other side of said support leg parts, the insertion portion including a fitting protrusion provided in the insert and the insert piece having flexibility or elasticity is disposed at the distal end of the spacer portion, a lower surface and the spacer portion proximal portion of the support leg A step of connecting a plurality of grating main bars in parallel, each of which has a formed fitting recess forming hole, and a fitting recess formed in a portion where the fitting recess forming hole and the insertion hole intersect ;
Wherein after connecting each main bar, method for producing a grating and a step of inserting the core rod wherein communicating to the insertion holes.

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