Concrete product leveling plate

Abstract

To provide a level adjusting plate for a concrete product in which the thickness of a plate body is not limited by the height of a positioning projection.SOLUTION: Locking protrusions 2, 2a are protrusively provided on the surface of one side part 1a of a plate body 1, locking holes 3, 3a are penetratingly formed on the other side part 1b, pins 4, 4a having the same height as the locking protrusions 2, 2a are provided on the surface of the other side part 1b, and pin holes 5, 5a are penetratingly formed on the one side part 1a, when the plate body 1 is rotated by 180 degrees around the center thereof, the body is set so as to be disposed within the region of the latching holes 3, 3a and the pin holes 5, 5a, so that when two plates are stacked, the upper plate body is rotated 180 degrees in the horizontal direction with respect to the lower plate body, and when the locking protrusions 2, 2a and the pins 4, 4a of the lower plate body are inserted into the locking holes 3, 3a and the pin holes 5, 5a of the upper plate body, the upper surface of the lower plate body can be stacked against the lower surface of the upper plate body regardless of the thickness of the plate body 1.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a level adjustment plate for concrete products that is installed on the installation surface of a concrete product when laying the concrete product on site. [Background technology]

[0002] Conventionally, when concrete products such as gutters and box culverts are laid on site, they are laid on top of a mounting surface constructed by pouring concrete. However, because the mounting surface is uneven, the level of the concrete product needs to be adjusted. For this reason, the level is adjusted by stacking one or more rectangular plates underneath the concrete product to the required thickness.

[0003] Examples of this level adjustment plate material include a level adjustment plate for concrete products that has a pair of positioning protrusions on the surface of the plate body and mating holes on the back surface of the plate body that correspond to the positioning protrusions, so that when stacked, the positioning protrusions fit into the mating holes, making it easy to position the upper item (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 7-40912 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above-mentioned conventional technology, since a fitting hole is formed on the back side of the positioning protrusion, there were problems that had to be solved, such as the fact that the upper surface of the upper item cannot be brought into contact with the upper surface of the lower item when in use unless the thickness of the plate body is made thicker than the height of the positioning protrusion. [Means for solving the problem]

[0006] In view of the problem based on the above-mentioned prior art that the thickness of the plate body is limited by the height of the positioning projections, the present invention provides a plate body having a rectangular shape, at least two hooking projections protruding from the surface of one side portion of the plate body with respect to the center line, hooking holes formed to penetrate the plate body in the other side portion with respect to the center line, the same number as the hooking projections, at least two pins protruding from the surface of the other side portion of the plate body, and pin holes formed to penetrate the one side portion of the plate body, wherein the hooking projections have hook portions formed at the tips of elastically deformable rising portions, and hooking protrusions that engage with the hook portions are formed to protrude inwardly from the lower portions of the hooking holes, and the heights of the hooking projections and the pins are lower than the thickness of the plate body. 、 The positions of the hooking protrusion and the pin are set so that when rotated 180 degrees around the center of the plate body, they can be positioned within the area of ​​the hooking hole and the pin hole.By doing this, when stacking two plates, the upper plate is rotated 180 degrees horizontally relative to the lower plate, and the hooking protrusion and pin of the lower plate are inserted into the hooking hole and pin hole of the upper plate.This makes it possible to stack and use the plates with the top surface of the lower plate in contact with the bottom surface of the upper plate, regardless of the thickness of the plate body, thereby solving the above problem. [Effects of the Invention]

[0007] In short, the present invention provides a plate having a rectangular plate body, at least two hooking projections protruding from the surface of one side portion of the plate body with respect to the center line, hooking holes formed in the same number as the hooking projections and penetrating the other side portion of the plate body with respect to the center line, at least two pins protruding from the surface of the other side portion of the plate body, and pin holes formed in the one side portion of the plate body, wherein the hooking projections have hook portions formed at the tips of elastically deformable rising portions, and hooking protrusions that engage with the hook portions are formed inwardly at the bottom of the hooking holes, and the heights of the hooking projections and the pins are made lower than the thickness of the plate body. 、The positions of the hooking protrusions and the pins are set so that they can be positioned within the areas of the hooking holes and the pin holes when rotated 180 degrees around the center of the plate body. Therefore, when stacking for level adjustment, the upper one is rotated 180 degrees horizontally relative to the lower one, and the lower hooking protrusions and pins are inserted into the upper hooking holes and pin holes. This causes the upper surface of the lower one to come into contact with the lower surface of the upper one, making it easy to position the upper one relative to the lower one. In this stacked state, the upper one is always stacked tightly relative to the lower one without shifting, and the concave when hung down is Since the stacked state is not easily disturbed by the use of shingled products, level adjustment work can be easily performed, and even if the thickness of the plate body is thinner than the height of the hooking protrusions and pins and the tips of the hooking protrusions and pins protrude from the top surface of the upper plate body, they can be used without any problems because they are lower than the hooking protrusions and pins of the upper plate, and when stacking for boxing, if the hooking protrusions and pins of the lower plate are abutted against the underside of the upper plate, they can be maintained in a parallel state, allowing for smooth boxing.

[0008] The plate body has escape holes for the hook projections on both sides thereof and escape holes for the pins on both sides thereof, and the center distance between the hook projections and the escape holes for the hook projections and the center distance between the pins and the escape holes for the pins are the same. Therefore, the upper one is shifted widthwise relative to the lower one, and then the upper one is shifted to the opposite side relative to the lower one, and this is repeated to stack them in a zigzag pattern, and the lower hook projection is inserted into the one on the opposite side to the shift direction of the upper hook projection escape hole, and the lower pin is inserted into the one on the opposite side to the shift direction of the upper pin escape hole. This allows the upper one to be stacked neatly without shifting relative to the lower one, and therefore has great practical effects such as allowing for smooth boxing. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a plan view of a first embodiment of a level adjusting plate for concrete products according to the present invention. [Figure 2] FIG. 2 is a bottom view of the level adjustment plate of FIG. 1. [Figure 3] FIG. 2 is a plan view showing a state in which two level adjusting plates of the first embodiment are stacked on top of each other during use. [Figure 4] 2 is a cross-sectional view taken along the line AA in FIG. 1. [Figure 5] BB cross-sectional view of FIG. 3. [Figure 6] FIG. 10 is a cross-sectional view showing a state in which two level adjusting plates of Example 1 are stacked on top of each other when packed in a box. [Figure 7] 1 is a diagram showing a state in which the level adjusting plate of the first embodiment is used. FIG. [Figure 8] FIG. 10 is a plan view of a second embodiment of a level adjusting plate for concrete products according to the present invention. [Figure 9] FIG. 9 is a bottom view of the level adjustment plate of FIG. 8. [Figure 10] FIG. 10 is a plan view showing a state in which two level adjusting plates of the second embodiment are stacked on top of each other during use. [Figure 11] 9 is a cross-sectional view taken along CC in FIG. 8. [Figure 12] FIG. 9 is a cross-sectional view taken along the line DD in FIG. 8. [Figure 13] 11 is a cross-sectional view of FIG. 10 taken along E-E axis. [Figure 14] FIG. 11 is a cross-sectional view of FIG. 10 taken along the line F-F. [Figure 15] FIG. 10 is a plan view showing an example of a state in which three level adjusting plates of the second embodiment are stacked upon each other when packed in a box. [Figure 16] 12 is a cross-sectional view of FIG. 11 . [Figure 17] FIG. 13 is a cross-sectional view of FIG. 12 taken along the line H-H. [Figure 18] 10 is a diagram showing a state in which the level adjusting plate of the second embodiment is used. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] The level adjustment plate of the present invention can be used alone or with multiple plates (preferably two plates) stacked on top of each other, and basically has a rectangular plate body 1, at least two hooking protrusions 2, 2a protruding from the surface of one side region 1a relative to the center line L1 of the plate body 1, hooking holes 3, 3a in the same number as the hooking protrusions 2, 2a and formed through the other side region 1b of the plate body 1 relative to the center line L1, at least two pins 4, 4a protruding from the surface of the other side region 1b of the plate body 1 relative to the center line L1, and pin holes 5, 5a formed through the one side region 1a of the plate body 1 relative to the center line L1, and the positions of the hooking protrusions 2, 2a and pins 4, 4a are set so that they can be arranged within the area of ​​the hooking holes 3, 3a and pin holes 5, 5a when the plate body 1 is rotated 180 degrees around the center.

[0011] The latching projections 2, 2a are arranged symmetrically with respect to a center line L2 that is perpendicular to the center line L1 of the plate body 1, and hooks 7, 7a are formed at the tips of the elastically deformable rising portions 6, 6a.

[0012] The hook holes 3, 3a are arranged symmetrically with respect to the center line L2, and at the bottom, hook protrusions 8, 8a that engage with the hook portions 7, 7a of the hook protrusions 2, 2a are protruded inward, and the lower openings are formed so that the hook protrusions 2, 2a can pass through while deforming them.

[0013] When the plate body 1 is rotated 180 degrees around its center, the rising portions 6, 6a can be positioned within the area of ​​the lower openings of the latching holes 3, 3a.

[0014] The pins 4, 4a have the same height as the latching projections 2, 2a and are arranged symmetrically with respect to the center line L2.

[0015] The pin holes 5, 5a are arranged symmetrically with respect to the center line L2, and allow the pins 4, 4a to be inserted from below. [Example]

[0016] Figure 1 is a plan view of Example 1 of a level adjustment plate for concrete products according to the present invention, Figure 2 is a bottom view of the level adjustment plate of Figure 1, Figure 3 is a plan view showing two level adjustment plates of Example 1 stacked on top of each other when in use, Figure 4 is a cross-sectional view AA of Figure 1, Figure 5 is a cross-sectional view BB of Figure 3, and Figure 6 is a plan view showing two level adjustment plates of Example 1 stacked on top of each other when packed in a box.

[0017] The plate body 1 has a number of holes 10, 10a... formed at appropriate positions all over the body, and finger hooks 11, 11a recessed into the long side surfaces. In the drawing, the finger hooks 11, 11a are formed so as not to reach the bottom surface from the top surface in the thickness direction, but they may also be formed so as to reach the bottom surface, although this is not shown.

[0018] The hooking protrusions 2 and the hooking protrusions 2a are each arranged in a set of four, and the arc-wall-shaped rising portions 6 and 6a are arranged on the same circumference, with hook portions 7 and 7a formed on the outer surfaces of the tips of the rising portions 6 and 6a.

[0019] The locking holes 3, 3a are circular holes into which all of the sets of four locking projections 2 and 2a can be inserted, and are provided at the bottom with locking projections 8, 8a that protrude inward.

[0020] The pins 4, 4a are round rods with spherical tips, and the pin holes 5, 5a are circular holes with a diameter slightly larger than that of the pins 4, 4a.

[0021] When multiple plates are stacked during use, as shown in Figures 3 and 5, the upper plate is rotated 180 degrees horizontally relative to the lower plate, and the lower hooking protrusions 2, 2a are inserted into the upper hooking holes 3, 3a and the lower pins 4, 4a into the upper pin holes 5, 5a, the hook portions 7, 7a of the hooking protrusions 2, 2a engage with the hooking protrusions 8, 8a of the hooking holes 3, 3a, and the underside of the upper plate body 1 is brought into contact with the top side of the lower plate body 1, and then the concrete product W is installed by placing it on the installation surface GL as shown in Figure 7. [Example]

[0022] Figure 8 is a plan view of Example 2 of the level adjustment plate for concrete products according to the present invention, Figure 9 is a bottom view of the level adjustment plate of Figure 8, Figure 10 is a plan view showing two level adjustment plates of Example 2 stacked on top of each other when in use, Figure 11 is a DD cross-sectional view of Figure 8, Figure 12 is an EE cross-sectional view of Figure 8, Figure 13 is an FF cross-sectional view of Figure 10, Figure 14 is a GG cross-sectional view of Figure 10, Figure 15 is a plan view showing an example of three level adjustment plates of Example 2 stacked on top of each other when packed in a box, Figure 16 is a GG cross-sectional view of Figure 15, and Figure 17 is an HH cross-sectional view of Figure 15.

[0023] The plate body 1 has holes 10, 10a, . . . and finger rests 11, 11a formed therein, as in the first embodiment.

[0024] The hooking projections 2 and 2a each comprise a pair of rising portions 6 and 6a that are long in the longitudinal direction of the plate body 1, and hook portions 7 and 7a are formed on the inner surfaces of the tips of the rising portions 6 and 6a.

[0025] The locking holes 3, 3a are rectangular and extend in the longitudinal direction of the plate body 1, and have locking projections 8, 8a protruding inward from the lower part of the outer wall surface.

[0026] The pins 4, 4a and the pin holes 5, 5a are formed in the same manner as in the first embodiment.

[0027] On the plate body 1, escape holes 12 and 13 for the hooking protrusion are formed on both sides of the hooking protrusion 2, escape holes 12a and 13a for the hooking protrusion are formed on both sides of the hooking protrusion 2a, escape holes 14 and 15 for the pin are formed on both sides of the pin 4, and escape holes 14a and 15a for the pin are formed on both sides of the pin 4a. As shown in Figures 11 and 12, the center distance between the hook projection 2 and the hook projection relief holes 12 and 13, the center distance between the hook projection 2a and the hook projection relief holes 12a and 13a, the center distance between the pin 4 and the pin relief holes 14 and 15, and the center distance between the pin 4a and the pin relief holes 14a and 15a are all the same dimension H.

[0028] When multiple plates are stacked during use, as shown in Figures 10, 13, and 14, the upper plate is rotated 180 degrees horizontally relative to the lower plate, and the lower hooking protrusions 2, 2a are inserted into the upper hooking holes 3, 3a and the lower pins 4, 4a into the upper pin holes 5, 5a, the hook portions 7, 7a of the hooking protrusions 2, 2a engage with the hooking protrusions 8, 8a of the hooking holes 3, 3a, and the lower surface of the upper plate body 1 is brought into contact with the upper surface of the lower plate body 1, and then, as shown in Figure 18, the concrete product W is installed by placing it on the installation surface GL.

[0029] When stacking the boxes, as shown in Figures 15 to 17, the upper one is oriented in the same direction as the lower one but is shifted widthwise, and then the upper one is shifted to the opposite side of the lower one, and this process is repeated to stack the boxes in a zigzag pattern. At this time, the lower hook projection 2 is inserted into the upper hook projection relief holes 12, 13 on the opposite side to the shift direction (the second-stage inner hook projection relief hole 12 and the third-stage outer hook projection relief hole 13 in the drawing), the other hook projection 2a is inserted into the upper hook projection relief holes 12a, 13a on the opposite side to the shift direction (the second-stage outer hook projection relief hole 13a and the third-stage inner hook projection relief hole 12a in the drawing), one lower pin 4 is inserted into the upper pin relief holes 14, 15 on the opposite side to the shift direction (the second-stage inner pin relief hole 14 and the third-stage outer pin relief hole 15 in the drawing), and the other lower pin 4a is inserted into the upper pin relief holes 14a, 15a The pins are inserted into the pin relief holes 15a on the outer side of the second row and the pin relief holes 14a on the inner side of the third row in the drawing, and a predetermined number of pins are stacked.

[0030] The shapes of the holes 10, 10a, ... in the plate body 1 in the first and second embodiments are not limited to those shown in the drawings, and may not be present.

[0031] Furthermore, it is preferable to prepare multiple level adjustment plates according to the present invention with different thicknesses of the plate body 1, so that when in use, an appropriate number of plates (preferably two) can be selected and stacked to achieve the desired thickness. [Explanation of symbols]

[0032] 1 Plate body 2, 2a latching protrusion 1a Unilateral site 1b Other lateral part 3 Latch hole 4, 4a pin 5, 5a pin hole 6, 6a Rising section 7, 7a hook part 8, 8a Latching protrusion 12, 13 Relief holes for hook protrusions Relief holes for pins 14 and 15 L1 center line

Claims

1. 1. A level adjustment plate for concrete products, comprising: a rectangular plate body; at least two hooking projections protruding from a surface of the plate body at one side relative to the center line; hooking holes formed through the plate body at the other side relative to the center line, the same number as the hooking projections; at least two pins protruding from the surface of the plate body at the other side; and pin holes formed through the plate body at the one side, wherein the hooking projections have hook portions formed at the tips of elastically deformable raised portions, and hooking protrusions that engage with the hook portions are formed inwardly at the lower parts of the hooking holes, the heights of the hooking projections and the pins are made lower than the thickness of the plate body, and the positions of the hooking projections and the pins are set so that they can be positioned within the areas of the hooking holes and pin holes when the plate body is rotated 180 degrees around the center.

2. A level adjustment plate for concrete products as described in claim 1, characterized in that escape holes for the hanging protrusions are formed on both sides of the hanging protrusions on the plate body, and escape holes for the pins are formed on both sides of the pins, and the center-to-center distance between the hanging protrusions and the escape holes for the hanging protrusions and the center-to-center distance between the pins and the escape holes for the pins are the same.

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