JP2019007270A - Grating - Google Patents

Abstract

To provide a grating with a production cost that is kept as low as possible.SOLUTION: A grating 10 comprises: a plurality of main bars 11 that extend along a ditch D such as a drainage ditch and are arranged parallel to each other through a predetermined interval in a width direction of the ditch D, and a connecting plate 12 that extends in the width direction of the ditch D and is made of a strip-like sheet metal member arranged parallel to each other in a direction along the ditch D and connecting the plurality of main bars 11. The plurality of main bars 11 are arranged at equal intervals in the width direction of the ditch D using a square steel having a rectangular sectional shape in the direction orthogonal to the direction along the ditch D, and lower portions of the plurality of main bars 11 are fixed to an upper surface of the connecting plate 12 which is erected so that a thickness direction is a direction along the ditch D.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a grating covering an upper surface opening of a groove such as a drainage groove.

  Patent Document 1 discloses a grating invention that covers an upper surface opening of a groove such as a drainage groove. The grating includes a plurality of main bars extending along a groove such as a drainage groove and a connecting bar extending along the width direction of the groove and connecting the plurality of main bars. This grating creates a clean aesthetic and also prevents the narrow heel of shoes such as high heels from getting caught between the gratings by arranging multiple main bars extending along the groove at narrow intervals. ing. The main bar has a T-shaped cross section in a direction perpendicular to the direction along the groove, and is composed of a horizontal plate portion and a vertical plate portion extending downward from the center of the horizontal plate portion. Arranged at intervals. In addition, a plurality of through holes are formed in the vertical plate portions of the plurality of main bars at equal intervals in the direction along the grooves, and a plurality of main bars are provided in the width direction of the grooves in each through hole. A connecting bar to be connected is inserted and fixed by welding.

JP 2010-180558 A

  In the grating as disclosed in Patent Document 1, a steel bar having a T-shaped cross-section is used for the main bar, and the T-shaped steel sheet is manufactured by drawing, so that the cost of parts is high. was there. Further, the plurality of main bars are connected by a connecting bar, and the vertical plate portions of the plurality of main bars must be formed with a plurality of through holes through which the connecting bars are inserted in the direction along the groove. There has been a problem that the processing cost of the process becomes high. An object of the present invention is to keep the manufacturing cost of grating as low as possible.

  In order to solve the above problems, the present invention extends along a groove such as a drainage groove, and extends along the width direction of the plurality of main bars arranged in parallel to each other at a predetermined interval in the width direction of the groove. A grating that is arranged in parallel with each other in the direction along the groove and is made of a band plate-like sheet metal member that connects the plurality of main bars, and covers the upper surface opening of the groove, wherein the plurality of main bars are Square steel with a rectangular cross-section in the direction perpendicular to the groove is used, arranged at equal intervals in the width direction of the groove, and plural on the upper surface of the connecting plate standing so that the thickness direction is along the groove The grating is characterized in that the lower part of the main bar is fixed.

  In the grating configured as described above, square steel is used for the plurality of main bars, strip plate-like sheet metal members are used for the connecting plates, and not only the component cost is kept low by using a simple steel material, Since the lower portions of the plurality of main bars are fixed to the upper surface of the connecting plate, it is possible to keep the manufacturing costs including the component costs and the processing costs low by preventing the processing costs such as insertion holes from being generated in the plurality of main bars. It became so. In addition, the use of strong square steel for the plurality of main bars not only prevents the plurality of main bars from being deformed by a load such as a heavy load applied from the upper side, but the thickness direction is a direction along the groove. Since the plurality of main bars are supported and fixed on the upper surface of the connecting plate standing so as to be, the connecting plate can be prevented from being deformed by a load applied from the plurality of main bars. Furthermore, the connecting plate is arranged below the plurality of main bars, and when the grating is viewed from above, only the main bar extending mainly in the direction along the groove can be seen. Can now give.

  In the grating configured as described above, a plurality of recesses for fitting a plurality of main bars are formed at equal intervals in the width direction of the grooves on the upper surface of the connecting plate, and the plurality of main bars are fitted into the plurality of recesses. It is preferable to fix in the state which was made. When doing in this way, the fixation area with respect to the connection plate of a plurality of main bars can be increased, and the fixation strength of the plurality of main bars with respect to the connection plate can be increased. Further, by fitting the main bar into the recess of the connecting plate, the plurality of main bars are arranged in parallel to each other at a predetermined interval in the width direction of the grooves, and the width direction of the grooves of the plurality of main bars Can be easily positioned with respect to.

  In the grating configured as described above, it is preferable to arrange the plurality of main bars at equal intervals in the width direction of the grooves at the same interval as the length in the width direction of the grooves, and when this is done, the appearance of the grating is improved. We were able to.

It is a perspective view of the grating of the present invention. It is sectional drawing of the direction orthogonal to the direction along a groove | channel. It is a jig for arranging the main bar in the width direction of the groove. It is sectional drawing corresponding to FIG. 2 of embodiment which eliminated the recessed part of the connection plate.

  Hereinafter, an embodiment of the grating of the present invention will be described with reference to the drawings. As shown in FIG. 1, the grating 10 of the present invention includes a plurality of main bars 11 that extend along a groove D such as a drainage groove and are arranged in parallel to each other at a predetermined interval in the width direction of the groove D. A connecting plate 12 made of a sheet metal member that extends along the width direction of the groove D and is arranged in parallel with each other in the direction along the groove D to connect the plurality of main bars 11, and frames provided on both sides of the groove D in the width direction A body 13 is provided.

  As shown in FIG. 1, the main bar 11 extends along a groove D such as a drainage groove, and 15 (plural) main bars 11 are arranged in parallel to each other at a predetermined interval in the width direction of the groove D. Yes. As shown in FIG. 2, the main bar 11 is made of a long square steel having a square shape (rectangular shape) having a cross-sectional shape in a direction orthogonal to the direction along the groove D. The fifteen main bars 11 are arranged at equal intervals in the width direction of the grooves D at the same interval as the length of the grooves D of the main bar 11 in the width direction.

  As shown in FIGS. 1 and 2, the connecting plate 12 is a strip-like sheet metal member extending along the width direction of the groove D, and the eight (plural) connecting plates 12 are mutually connected in the direction along the groove D. They are arranged in parallel. The connecting plate 12 is erected so that the thickness direction is along the groove D, and a plurality of main bars 11 are fixed to the upper surface of the connecting plate 12. Fifteen concave portions 12a are formed on the upper surface of the connection plate 12 of this embodiment according to the number of the fifteen main bars 11. The recesses 12a have the same length as the width direction of the grooves D of the main bar 11, and the 15 recesses 12a are formed in the width direction of the grooves D at the same intervals as the widths of the recesses 12a. The lower half of the main bar 11 is fitted in the recess 12a, and the lower half of the 15 main bars 11 is fixed by welding in close contact with the recess 12a. The fifteen concave portions 12a also have a positioning function for arranging the fifteen main bars 11 in parallel with each other in the width direction of the groove D.

  As shown in FIG. 1 and FIG. 2, the frame body 13 uses a substantially L-shaped steel material upside down, and the frame body 13 is disposed on both sides of the groove D in the width direction. Each end of the connecting plate 12 in the width direction of the groove D is fixed to the vertical portion of each frame 13 disposed on both sides of the groove D in the width direction by welding. The grating 10 covers the upper surface opening of the groove D while the horizontal portion of the frame 13 is locked to the edge of the groove D.

  In the grating 10 configured as described above, square steel is used for the 15 (plural) main bars 11, strip-shaped sheet metal members are used for the 8 (plural) connecting plates 12, and a simple steel material is used. By using it, the parts cost could be kept low. Further, since the lower portions of the 15 main bars 11 are fixed to the upper surface of the connecting plate 12, no processing costs such as insertion holes are generated in the main bar 11, so that the processing costs can be kept low. Thus, the grating 10 of the present invention can keep both the component cost and the processing cost low, and can keep the manufacturing cost low.

  In addition, since the main bar 11 is made of strong square steel, the main bar 11 can be prevented from being deformed by the load of a heavy object such as an automobile applied from above. Further, since the connecting plate 12 that supports the 15 main bars 11 is arranged upright so that the thickness direction is in the direction along the groove D, as described above, the load of a heavy object such as an automobile is subjected to the main bar. 11 was added to the connecting plate 12, it was possible to prevent the connecting plate 12 from being deformed by a heavy load.

  In the grating 10, 15 recesses 12 a for fitting 15 main bars 11 are formed on the upper surface of the connecting plate 12 at equal intervals in the width direction of the groove D. It fixed by welding in the state fitted to the 15 recessed parts 12a. Since the main bar 11 is fixed by welding in a state where the lower half of the main bar 11 is fitted in the recess 12a, the area of the fixed portion of the main bar 11 and the connecting plate 12 can be increased. It was possible to prevent the fixing portion of the main bar 11 and the connecting plate 12 from being damaged by an impact applied from a heavy object such as the above. Further, the recess 12a formed on the upper surface of the connecting plate 12 has a function of positioning the 15 main bars 11 at equal intervals in the width direction of the groove D. The 15 main bars 11 are positioned in the width direction of the groove D. Further, since the jig as shown in FIG. 3 for positioning at equal intervals is not used, the workability of fixing the 15 main bars 11 to the connecting plate 12 can be improved. Note that the present invention is not limited to this, and although it is impossible to obtain the effect of the above-described recess 12a of the connecting plate 12, the recess 12a is formed on the upper surface of the connecting plate 12 as shown in FIG. Instead, the 15 main bars 11 may be fixed to the upper surface of the connecting plate 12 by welding.

  Further, in the grating 10, 15 main bars 11 are arranged at equal intervals in the width direction of the groove D at the same interval as the length of the groove D in the width direction. As a result, the main bar 11 and the gap are alternately arranged in the width direction of the groove D at the same interval, and the appearance of the grating 10 can be improved.

  In the grating 10 of this embodiment, 15 main bars 11 made of square steel having a square shape with a side length of 6 mm are arranged at equal intervals in the width direction of the groove D. Is not limited to this, and the main bar 11 made of square steel of different thickness may be used according to the load at the place of installation, or a thin heel part of a shoe such as high heels may be sandwiched. The interval between the plurality of main bars 11 may be changed as much as possible. Further, the main bar 11 is not limited to the square bar made of square steel having a square cross section, and the main bar 11 made of square steel having a rectangular cross section may be used.

  The grating 10 of this embodiment uses L-shaped frame bodies 13 whose cross-sectional shapes in the direction perpendicular to the grooves D are upside down on both sides in the width direction of the grooves D. By engaging the horizontal portions of the frame bodies 13 on both sides in the width direction of the groove D with the upper edges on both sides in the width direction of the groove D, the grating 10 does not fall into the groove D, and the grating 10 is Can be laid to cover the top opening. The frame body 13 is not limited to such an L-shape that is upside down, and is disposed so that the horizontal direction of the frame body 13 is eliminated and only the vertical portion is disposed, so that the thickness direction is the width direction of the groove D. A frame made of a strip extending along the groove D may be used. The grating 10 using the frame made of the strip is suitable for being placed and laid on the receiving frame of the groove D in which L-shaped receiving frames are provided on the upper edges on both sides in the width direction.

  DESCRIPTION OF SYMBOLS 10 ... Grating, 11 ... Main bar, 12 ... Connection plate, 12a ... Recessed part, D ... Groove.

Claims (3)

A plurality of main bars extending along a groove such as a drainage groove and arranged in parallel to each other at a predetermined interval in the width direction of the groove;
An upper surface opening of the groove, comprising: a connecting plate made of a strip-like sheet metal member extending along the width direction of the groove and arranged parallel to each other in the direction along the groove to connect the plurality of main bars. A grating covering
The plurality of main bars are arranged at equal intervals in the width direction of the groove using square steel having a rectangular cross-sectional shape in a direction perpendicular to the direction along the groove,
A grating according to claim 1, wherein lower portions of the plurality of main bars are fixed to an upper surface of the connecting plate which is erected so that a thickness direction is a direction along the groove. The grating according to claim 1,
A plurality of recesses for fitting the plurality of main bars are formed at equal intervals in the width direction of the groove on the upper surface of the connection plate, and the plurality of main bars are fixed in a state of being fitted to the plurality of recesses. Grating characterized by that. The grating according to claim 1 or 2,
The grating characterized in that the plurality of main bars are arranged at equal intervals in the width direction of the groove at the same interval as the length of the groove in the width direction.

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