JP5184501B2 - Grating - Google Patents

Description

  The present invention relates to a grating used for drainage equipment such as a gutter and a ridge and other places.

  Conventionally, grating is generally a plate-like main bar (bearing bar), a plate-like end bar connecting these main bars at the end, and a rod-like cross bar (twist bar) arranged so as to be orthogonal to the main bar. Each member was joined by welding. Here, in order to prevent the main bar from falling down, it has been necessary to pay close attention so that the welding strength between the main bar and the end bar is sufficiently large. In order to solve this problem, in Patent Document 1, as shown in FIG. 11, the end bar 11 is provided with bent pieces 11 a and 11 a that fit between the main bars 12 and 12, so that the main bar 12 falls down. The grating 10 which can prevent easily was proposed.

JP 2007-332741 A

  By the way, although the said conventional grating 10 can prevent the fall of the main bar 12 easily by the bending pieces 11a and 11a in the end bar 11, the grating which has the effect of preventing a fall further was desired.

  The present invention has been made to solve the above-described conventional drawbacks, and an object of the present invention is to provide a grating that can prevent the main bar from falling down and increase the rigidity. .

In order to achieve the above object, the grating according to the present invention has the following configuration. That is,
The grating according to the invention described in claim 1 includes a plurality of main bars arranged at intervals, a cross bar connecting the plurality of main bars at an intermediate position excluding both ends of the main bars, and the plurality of the plurality of main bars. The main bar includes an end bar that is connected to each end of the main bar. Here, the end bar includes an end bar body facing the end surface of the main bar, an upper bent piece that is bent from an upper end portion of the end bar body and fits between the main bars, and a lower end portion of the end bar body. A lower bent piece that is bent and fits between each of the main bars. The main bar is press-fitted into the gap between the upper bent pieces.

  According to this grating, the upper bent piece and the lower bent piece of the end bar are fitted between the main bars, whereby the main bar is held in an upright posture. At this time, in the upper bent piece, since the main bar is press-fitted into the gap between the upper bent pieces, the main bar is securely held in an upright position without the main bar being shaken in the upper part. .

  Further, the grating according to the invention of claim 2 is the grating according to claim 1, wherein the gap between the upper bent pieces into which the main bar is press-fitted is formed wider on the mouth side than on the back side. The width dimension on the mouth side is larger than the thickness dimension of the main bar. In this way, the gap between the upper bent pieces into which the main bar is press-fitted is formed wider on the mouth side than on the back side, and the width dimension on the mouth side is made larger than the thickness dimension of the main bar. In the press-fitting, the main bar bites into the gap between the upper bent pieces easily, and the press-fitting can be performed without difficulty.

  Further, in the grating according to the invention described in claim 3, in the grating according to claim 1 or 2, the main bar is fitted into the gap between the lower bent pieces. Thereby, the manufacturing pitch difference between the upper bent piece and the lower bent piece can be absorbed by the gap between the lower bent pieces into which the main bar is fitted.

  Further, the grating according to the invention described in claim 4 is the grating according to claim 1 or 2, wherein the main bar has an upper thick part located at the upper end and a lower thick part located at the lower end. It is formed in an I-shaped cross section that includes a portion and an intermediate portion that connects the upper thick portion and the lower thick portion and becomes thinner than the upper thick portion and the lower thick portion. The main bar extends downward beyond the lower bent piece, the upper thick portion is press-fitted into the gap between the upper bent pieces, and the intermediate bar is inserted into the gap between the lower bent pieces. The part is fitted. Thus, the main bar extends downward beyond the lower bent piece of the end bar, so that a passage communicating with the inside and outside of the end bar is formed under the end bar, and enters the outside of the end bar through the passage. Sand, mud, etc., can be discharged between the main bars. Furthermore, the middle part of the main bar is fitted in the gap between the lower bent pieces, so that the intermediate part is fitted into the gap in manufacturing pitch between the upper bent piece and the lower bent piece. Can be absorbed in the gap between the lower bent pieces.

  Further, in the grating according to the invention described in claim 5, in the grating according to claim 1 or 2, the main bar is press-fitted into the gap between the lower bent pieces. In this way, the main bar is pressed into the gap between the lower bent pieces as well as the upper bent pieces, so that the main bar is not shaken even in the lower part, and the main bar is held more securely in an upright posture. Is done.

  According to a sixth aspect of the present invention, in the grating according to the first, second, third, or fifth aspect, the main bar extends downward beyond the lower bent piece. As a result, a passage that communicates the inside and outside of the end bar is formed under the end bar, and sand, mud, or the like that has entered the outside of the end bar can be guided and discharged between the main bars through the passage. it can.

  Further, in the grating according to the invention described in claim 7, in the grating according to any one of claims 1 to 6, the upper bent piece and the lower bent piece are formed symmetrically, and the end bar is formed. Can be installed upside down. Thereby, an end bar and a main bar can be assembled | attached, without considering the upper and lower sides of an end bar.

  Further, in the grating according to the invention described in claim 8, in the grating according to any one of claims 1 to 6, the upper bent piece is bent from the upper end portion of the end bar body to the main bar side. It has a bending part and an inclined part which leaves | separates from the said end bar main body toward the downward direction following the bending part. Thus, since the upper bent piece of the end bar has the inclined portion, water such as rainwater falls under the grating along the inclined portion, so that drainage efficiency can be increased. Also, since sand, mud, etc. fall under the grating along this inclined part, sand or mud is placed on the lid hanging part on which the grating is placed, or on the raising material provided on the grating or on the bottom plate. Etc. can be reduced or avoided.

  According to the grating according to the present invention, the upper bent piece and the lower bent piece are fitted between the main bars, and the main bar is pressed into the gap between the upper bent pieces, so that the main bar is in an upright posture. Thus, it is possible to prevent the main bar from falling down and increase the rigidity of the grating.

It is a longitudinal cross-sectional view of 1st embodiment of this invention. Similarly, it is a principal part enlarged plan view. Similarly, it is sectional drawing by the AA in FIG. Similarly, it is sectional drawing by the BB line in FIG. Similarly, it is a principal part enlarged plan view which shows the process of assembling a main bar and an end bar. It is a longitudinal cross-sectional view of 2nd embodiment of this invention. It is a longitudinal cross-sectional view which shows the 1st modification of this invention. It is a longitudinal cross-sectional view which shows the 2nd modification of this invention. It is a longitudinal cross-sectional view which shows the 3rd modification of this invention. It is a longitudinal cross-sectional view which shows the 4th modification of this invention. It is a principal part perspective view of the conventional grating.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for implementing grating according to the present invention will be described with reference to the drawings.

  1 to 5 show a first embodiment of the present invention. Reference numeral 1 in the figure denotes a drainage block that serves as a drainage facility, such as a drainage groove such as a side groove or a transverse groove, or a trough. A grating 2 is provided in the drainage block 1.

  The drainage block 1 includes side walls 1a and 1a on both sides, and lid hanging portions 1b and 1b to which the grating 2 is passed are provided on the side walls 1a and 1a. In the illustrated embodiment, a receiving frame 1c having an L-shaped cross section is provided on the upper portion of the side wall 1a, and the upper surface of a horizontal piece constituting the L-shape serves as the lid hanging portion 1b.

  The grating 2 includes a plurality of main bars 3 and 3 that are arranged at intervals, and cross bars 4 and 4 that connect the plurality of main bars 3 and 3 at intermediate positions excluding both ends of the main bars 3 and 3 ( For example, a twist bar) and end bars 5 and 5 connecting the plurality of main bars 3 and 3 at respective ends of the main bars 3 and 3 are provided. The grating 2 is stretched over the lid hanging portions 1b and 1b so that the end sides of the main bars 3 and 3 are placed on the lid hanging portions 1b and 1b of the drainage block 1.

  Here, the main bar 3 connects the upper thick part 3a located at the upper end, the lower thick part 3b located at the lower end, and the upper thick part 3a and the lower compressed part 3b. It is formed in an I-shaped cross section, which is composed of an upper thick portion 3a and an intermediate portion 3c that is thinner than the lower thick portion 3b.

  The cross bar 4 is made of, for example, a bar material twisted with a hexagonal mold bar. A plurality of cross bars 4 are arranged at intervals so as to be orthogonal to the main bars 3 and 3 arranged in parallel, and joined to the upper end portions of the main bars 3 and 3 by, for example, resistance welding. The

  The end bar 5 is made of a plate material, an end bar main body 5a facing the end surface of the main bar 3, 3 and an upper bent piece 5b which is bent from the upper end of the end bar main body 5a and fits between the main bars 3, 3. 5b and lower bent pieces 5c and 5c which are bent from the lower end portion of the end bar main body 5a and fit between the main bars 3 and 3, respectively. In the grating 2, the main bar 3 extends downward beyond the lower bent piece 5c. Here, the upper bent piece 5b and the lower bent piece 5c are bent so as to be folded back from the upper end portion and the lower end portion of the end bar main body 5a. Specifically, the upper bent piece 5b is bent at a right angle from the upper end portion of the end bar main body 5a toward the main bar 3, and further bent at a right angle so as to go downward. The lower bent piece 5c is bent at a right angle from the lower end of the end bar main body 5a toward the main bar 3, and further bent at a right angle so as to go further upward.

  Therefore, in the grating 2, the main bar 3 is press-fitted into the gap 5 d between the upper bent pieces 5 b and 5 b in the end bar 5. Here, the gap 5d between the upper bent pieces 5b and 5b into which the main bar 3 is press-fitted is formed wider on the mouth side than on the back side, and the width dimension on the mouth side is larger than the thickness dimension of the main bar 3. It has become big. Specifically, the upper thick portion 3a of the main bar 3 is press-fitted into the gap 5d between the upper bent pieces 5b and 5b. For this reason, the width dimension of the mouth side of the gap 5d between the upper bent pieces 5b and 5b is larger than the thickness dimension of the upper thick portion 3a. The width dimension on the back side of the gap 5d is smaller than the thickness dimension of the upper thick part 3a.

  Further, the main bar 3 is loosely fitted in the gap between the lower bent pieces 5c and 5c in the end bar 5. Specifically, the intermediate portion 3c of the main bar 3 is fitted into the gap between the lower bent pieces 5c and 5c. In the illustrated embodiment, the upper bent piece 5b and the lower bent piece 5c are formed symmetrically, and the end bar 5 can be assembled to the main bars 3, 3 by turning upside down. Yes.

  Next, the effect of the grating 2 having the above configuration will be described. According to the grating 2, the upper bent pieces 5 b and 5 b and the lower bent pieces 5 c and 5 c in the end bar 5 are fitted between the main bars 3 and 3, so that the main bars 3 and 3 are held in an upright posture. The Moreover, by providing the upper bent piece 5b and the lower bent piece 5c, the end bar 5 has a higher section modulus with respect to the load from above, and thus the end bar 5 can be made thinner. In the upper bent pieces 5b and 5b, the main bar 3 is press-fitted into the gap 5d between the upper bent pieces 5b and 5b. It is securely held in a standing posture. Thus, the upper bent pieces 5b, 5b and the lower bent pieces 5c, 5c are fitted between the main bars 3, 3, and the main bar 3 is press-fitted into the gap 5d between the upper bent pieces 5b, 5b. As a result, the main bar 3 is securely held in an upright posture, thereby preventing the main bar 3 from falling down and increasing the rigidity of the grating 2. Then, since the rigidity of the grating 2 is increased by preventing the main bar 3 from falling, it is not necessary to weld all of the plurality of main bars 3 and 3 to each end bar 5, and every other or several bars. It is possible to perform welding by thinning out only the upper part of the top and bottom.

  Further, the gap 5d between the upper bent pieces 5b and 5b into which the main bar 3 is press-fitted is formed wider on the mouth side than on the back side, and the width dimension on the mouth side is larger than the thickness dimension of the main bar 3. By doing so, it becomes easy to bite the main bar 3 into the gap 5d between the upper bent pieces 5b and 5b when press-fitting. For this reason, the main bar 3 can be pressed into the gap 5d between the upper bent pieces 5b and 5b without difficulty. On the other hand, the main bar 3 is fitted into the gap between the lower bent pieces 5c and 5c. Thereby, the manufacturing pitch deviation between the upper bent piece 5b and the lower bent piece 5c can be absorbed by the gap between the lower bent pieces 5c and 5c in which the main bar 3 is fitted.

  In addition, the main bar 3 extends downward beyond the lower bent piece 5c of the end bar 5, so that a passage communicating with the inside and outside of the end bar 5 is formed under the end bar 5, and through the passage, Sand, mud, or the like that has entered the outside of the end bar 5 can be guided between the main bars 3 and 3 and discharged.

  Further, the upper bent piece 5b and the lower bent piece 5c are formed symmetrically, and the end bar 5 can be assembled upside down. For this reason, the end bar 5 and the main bars 3 and 3 can be assembled without considering the top and bottom of the end bar 5.

  FIG. 6 shows a second embodiment of the present invention. The grating 2 shown in this embodiment is different from the grating 2 shown in the first embodiment in the shape of the upper bent piece 5b in the end bar 5, but the other is the same, and has the same function below. The same reference numerals are given to the parts, and the different parts will be mainly described.

  In the grating 2, the upper bent piece 5b of the end bar 5 is bent from the upper end of the end bar body 5a to the main bar 3 side, and the bent part 501 is separated from the end bar body 5a as it goes downward. And an inclined portion 502. Specifically, the inclined portion 502 extends linearly downward and reaches the lower portion of the cross bar 4.

  The grating 2 has the same effect as the grating 2 shown in the first embodiment, but the upper bent piece 5b and the lower bent piece 5c are formed by the upper bent piece 5b of the end bar 5 having the inclined portion 502. And the end bar 5 cannot be assembled upside down. On the other hand, since the upper bent piece 5b has the inclined portion 502, water such as rain water falls below the grating 2 along the inclined portion 502, and thus the drainage efficiency can be increased. Moreover, since sand, mud, etc. fall below the grating 2 along the inclined portion 502, it is possible to reduce or avoid accumulation of sand, mud, etc. on the lid portion 1b on which the grating 2 is placed. . Then, as will be described later, when a raised material 6 or a bottom plate placed on the lid hanging portion 1b is provided at the lower part of the grating 2, sand, mud, or the like accumulates on the raised material 6 or the bottom plate. Can be reduced or avoided.

  In addition, this invention is not necessarily limited to embodiment mentioned above, A various other change is possible. For example, the drainage facility may be installed on-site even if it does not consist of the drainage block 1. Further, the grating 2 may be a floor board or a step board for a staircase, without being provided in the drainage facility.

  Further, the main bar 3 may be press-fitted into the gap between the lower bent pieces 5c and 5c in the end bar 5 even if the main bar 3 is not loosely fitted. In this way, when the main bar 3 is press-fitted not only into the upper bent pieces 5b and 5b but also into the gap between the lower bent pieces 5c and 5c, the main bar 3 does not shake even in the lower part. The main bar 3 is more reliably held in a standing posture.

  Further, in the first embodiment, the upper bent piece 5b and the lower bent piece 5c in the end bar 5 are bent so as to be folded back from the upper end portion and the lower end portion of the end bar main body 5a, but as shown in FIG. The upper end and the lower end of the end bar body 5a may be bent horizontally toward the main bar 3 side. Similarly, in the second embodiment, the lower bent piece 5c is bent so as to be folded back from the lower end portion of the end bar main body 5a. However, as shown in FIG. It may be bent horizontally to the bar 3 side.

  When the upper bent piece 5b of the end bar 5 has an inclined portion 502, the inclined portion 502 extends below the cross bar 4 as shown in FIG. However, the length does not need to reach below the crossbar 4, and the length is not particularly limited.

  Further, in the embodiment described above, the main bars 3 and 3 in the grating 2 are directly mounted on the cover portion 1b of the drainage block 1, but as shown in FIG. By providing the raised material 6 on the lower surface of the main bar 3, the raised material 6 is brought into contact with the lid hanging portion 1b, or although not shown, by providing a bottom plate on the lower surface of the main bar 3, You may make it this bottom plate contact | abut to the cover part 1b. Also, of course, in FIG. 10, the upper bent piece 5b of the end bar 5 is changed to an upper bent piece having a bent portion 501 and an inclined portion 502 as shown in FIG. 6, FIG. 8, or FIG. It doesn't matter.

  Further, the main bar 3 may extend to the lower surface of the lower bent piece 5c without extending downward beyond the lower bent piece 5c in the end bar 5.

2 Grating 3 Main bar 3a Upper thick part 3b Lower thick part 3c Middle part 4 Cross bar 5 End bar 5a End bar body 5b Upper bent piece 5c Lower bent piece 5d Gap 501 Bent part 502 Inclined part

Claims (8)

A plurality of main bars arranged at intervals, a cross bar connecting the plurality of main bars at an intermediate position excluding both ends of the main bars, and the plurality of main bars at each end of the main bars With an end bar and
The end bar is bent from an end bar main body facing the end surface of the main bar, an upper bent piece that is bent from an upper end portion of the end bar main body, and fits between the main bars, and a lower end portion of the end bar main body. And a lower bent piece that fits between each of the main bars,
The grating, wherein the main bar is press-fitted into a gap between the upper bent pieces.   The gap between the upper bent pieces into which the main bar is press-fitted is formed so that the mouth side is wider than the back side, and the width dimension of the mouth side is larger than the thickness dimension of the main bar. The grating according to claim 1, which is characterized.   The grating according to claim 1 or 2, wherein the main bar is fitted in a gap between the lower bent pieces. The main bar includes an upper thick part located at the upper end, a lower thick part located at the lower end, and the upper thick part and the lower part connecting the upper thick part and the lower thick part. It is formed in an I-shaped cross section composed of an intermediate part that is thinner than a thick part,
The main bar extends downward beyond the lower bent piece, the upper thick portion is press-fitted into the gap between the upper bent pieces, and the intermediate portion is inserted into the gap between the lower bent pieces. Grating according to claim 1 or 2, characterized in that it is a clearance fit.   The grating according to claim 1 or 2, wherein the main bar is press-fitted into a gap between the lower bent pieces.   The grating according to claim 1, 2, 3, or 5, wherein the main bar extends downward beyond the lower bent piece.   7. The upper bent piece and the lower bent piece are formed symmetrically, and the end bar can be assembled upside down and assembled. The grating described in 1.   The upper bent piece includes a bent portion bent toward the main bar from the upper end portion of the end bar main body, and an inclined portion which is separated from the end bar main body as it goes downward following the bent portion. The grating according to any one of claims 1 to 6.

Images