JP4330570B2 - Guard member for preventing breakage of concrete products - Google Patents

Description

The present invention relates to a guard member for preventing damage of a concrete product that prevents the corner portion, side ridge portion, and the like of a concrete product such as a U-shaped groove from being damaged.

Conventionally, U-grooves made of concrete have been inverted and loaded in a pyramid shape for storage and transportation, and collided with other concrete products and other obstacles existing in the vicinity during loading and transfer. In some cases, the corners or side ridges of the side walls of the groove were deficient.
In this way, when a defect occurs, it becomes a defective product if the part is left as it is, so the defect part must be repaired, but the work is laborious.

We do not conduct prior art searches at the research and development stage or application stage, and do not know the prior art documents to be described.

Accordingly, the present invention provides a guard member for preventing damage that prevents the corner portion or the side ridge portion from colliding with an obstacle or the like during transfer of the concrete product such as the U-shaped groove. The purpose is to do.

The present invention makes it possible to bend and deform a rectangular plate provided with a bending portion extending into the left and right sides into an L shape with the bending portion, and to raise and hold the rising portion formed by bending one of the left and right sides of the bending portion. And a pressure-sensitive adhesive layer that can be bonded to and peeled from a concrete product only on the inner surface of the rising portion and the flat portion, or only on the inner surface of the rising portion. It is a guard member for product loss prevention, which solves the above problem by protecting the corners and side ridges of the concrete product with a shock absorber , and the bending and stretching part is a boundary between the thin part with upward inclined lateral to each of the composed by providing an inclined surface abutting the time of bending deformation of the cushion, the respective inclined surface Ru provided upright holding means consisting of recesses and projections to be fitted to each other or one inclined surface A through hole penetrating in the thickness direction of the buffer body provided, and an elastically deformable claw piece projecting on the other inclined surface so as to pass through the through hole and hook onto the outer surface of the rising portion Standing holding means is provided.

In short, according to the present invention, since the adhesive layer is provided on the inner surface of the rising part and the flat part of the buffer body bent in the L shape, the corner part which is liable to be damaged due to collision with an obstacle or the like in a concrete product, By adhering the inner surface of the shock absorber to each of the side wall outer surface and the ground contact surface constituting the side ridge, the above-mentioned portion of the concrete product can be protected by adhesion with the shock absorber, and the concrete product being loaded and transported can be Impact generated by colliding with other concrete products or other obstacles or dropping on the landing surface can be mitigated, and occurrence of defects can be prevented.
In addition, according to the present invention, since the flat portion of the shock absorber is interposed on the landing surface in the loaded state, it is possible to eliminate the need for a conventional tree that has been interposed under the concrete product in the loaded state. Every time a concrete product is piled up, it is possible to omit the work of installing a tree on the landing surface, and the loading work can be performed safely and efficiently.
And at the time of construction of the concrete product on site, it can be constructed as usual without any trouble by removing the buffer together with the adhesive layer from the concrete product.

In addition, in the shock absorber provided with the adhesive layer only on the inner side of the rising part, the outer side wall and the grounding surface constituting the corner and side ridges that are likely to be damaged due to collision with an obstacle in a concrete product. Adhering the rising part to the outer side surface of the side wall via an adhesive layer, the flat part of the buffer formed by bending with respect to the rising part is brought into contact with the grounding surface, so that the part of the concrete product is covered with the buffer. Since it is possible to protect the adherence, it is possible to mitigate the impact caused by the concrete product being loaded and collided with other concrete products and other obstacles in the vicinity, and falling to the landing surface, as described above. Since the flat part of the buffer body can play the role of a tree, the loading operation can be performed safely and efficiently.
Furthermore, the shock absorber is attached only by being adhered to the outer side surface of the side wall of the concrete product with the adhesive layer provided at the rising portion, and has the same effect as described above , so that the adhesive layer is not provided on the flat portion. In addition, the cost can be reduced, and in the case of a concrete product that is inverted and stacked in a pyramid shape during storage, such as a U-shaped groove, the shock absorber becomes a ground contact surface with its flat portion inverted. Since the rising part is bonded to the outer side surface of the side wall through the adhesive layer so as to contact the upper end surface of the side wall, if the buffer is removed together with the adhesive layer during the construction of the U-shaped groove, Even if a part of the adhesive layer remains on the side, the part is not filled and visible, and the upper end of the side wall that is exposed after construction is simply touched by the flat part. Remains Not with, there is no to bad appearance.

And the shock absorber is composed of a rectangular plate with bifurcated parts that bisect to the left and right sides, and since it is a flat plate before use, it can be stacked without being bulky, so it is easy to pack a large number of shock absorbers together and store Many of them can be stored compactly.
In addition, the bent and extended part is provided with an upright holding means that bends one of the left and right sides, so that the buffer can be bent and deformed into an L shape during use, and attached to a concrete product. Can be done easily and easily.

In addition, the bent portion is inclined upward and downward to the left and right with the thin portion as a boundary, and is provided with an inclined surface that abuts when the buffer body is bent and deformed. The surfaces can be easily deformed into an L shape because of the abutment.

Further, each of the inclined surfaces is composed of a concave portion and a convex portion that are fitted to each other, and an abutting surface with the upper surface of the convex portion in the concave portion is elastically pressed against the upper surface of the convex portion in the fitted state. Since the standing holding means is provided, the right and left inclined surfaces abut against each other due to the bending deformation of the buffer body, and at the same time, the abutment surface of the recess elastically presses the upper surface of the convex portion and the convex portion and the concave portion are fitted. The fitting state can be ensured and can be held firmly, and the abutting state of the inclined surface can be held firmly, so that the rising state of the rising portion that bends with respect to the flat portion can be held.

Alternatively, a through hole penetrating in the thickness direction of the shock absorber provided on one inclined surface, and an elastic deformation protruding from the other inclined surface so as to pass through the through hole and be hooked on the outer surface of the rising portion Since the upright holding means comprising a claw piece is provided, the claw piece elastically deforms while the claw piece penetrates when the buffer body is deformed into the L shape, and after the penetration of the through hole, the elastic recovery is performed. The rising portion can be hooked on the outer surface of the rising portion and the rising portion can be prevented from falling down by the claw pieces in this state, and the rising state of the rising portion with respect to the flat portion can be firmly held.
According to the present invention, since it has a simple configuration as described above, its practical effect is significant, such as being easy to mold and being manufactured at low cost.

Embodiments of the present invention will be described below with reference to the drawings.
The guard member for preventing damage shown in FIGS. 1 to 9 includes a buffer body 1 formed by bending and deforming a horizontally long rectangular plate made of a hard synthetic resin into an L shape, and a buffer body 1 in a bent deformation state. It is mainly composed of an adhesive layer 3 provided on the inner side surface 2a of the rising portion 2.

In the flat unfolded state before use, the shock absorber 1 is provided with a bending / extending portion 4 that divides left and right (in the example shown in the figure, two equal parts) in the width direction at the middle portion in the longitudinal direction. One of the left and right sides (left side in the illustrated example) of the bent / extended portion 4 is formed as a rising portion 2 formed by bending the bent / extended portion 4 with respect to the other, and the other is formed as a flat portion 5.
The bending portion 4 is provided with an upright holding means 6 that holds the rising portion 2 in a state where the buffer body 1 is bent and deformed into an L shape.
The bending portion 4 is provided with a thin portion 7 across the width direction of the buffer body 1 so that the left and right rising portions 2 and the flat portion 5 are connected to each other so as to be able to bend and stretch. Each of the connecting end portions of the rising portion 2 and the flat portion 5 has inclined surfaces 8 and 9 that incline upward to the left and right of the thin portion 7 as a boundary and abut against each other when the buffer body 1 is bent and deformed. The inclined surfaces 8 and 9 have an inclination of 45 degrees.

The upright holding means 6 includes a concave portion 10 and a convex portion 11 provided on the inclined surfaces 8 and 9 so as to be fitted to each other.
The recess 10 is a through-hole corresponding to the cross-sectional shape of the inclined surface 8 formed by penetrating the inclined surface 8 provided at the connecting end of the rising portion 2 in the thickness direction of the buffer body 1 with a predetermined width.
The convex portion 11 is a right-triangular plate piece projecting at a portion corresponding to the concave portion 10 on the inclined surface 9 provided at the connecting end portion of the flat portion 5 so as to substantially match the cross-sectional shape of the concave portion 10.
The width of the convex portion 11 is such that the both side surfaces 11a in the width direction of the convex portion 11 are elastically sandwiched by the both side surfaces 10a in the width direction of the concave portion 10 in the fitted state of the concave portion 10 and the convex portion 11. Further, the width of the recess 10 is slightly narrowed.

The rising portion 2 and the flat portion 5 are symmetrical with respect to the thin portion 7 except for the concave portion 10 and the convex portion 11 provided on the inclined surfaces 8 and 9, and are inclined when the shock absorber 1 is deployed. Concave grooves 12 and 13 are formed vertically and horizontally on the back surface 2b and 5b of the rising part 2 and the flat part 5 except for the connecting end part having the surfaces 8 and 9, and each surface 2a is formed at the intersection of the concave grooves 12 and 13 , A square-shaped through hole 14 extending to 5a is provided.
The concave grooves 12 and 13 may not be formed.
Then, on the surface 2a corresponding to the inner side surface 2a of the rising portion 2 in a bent state, the entire surface or half surface (the half surface near the connecting end in the illustrated example) can be bonded and peeled to the concrete product W. A pressure-sensitive adhesive layer 3 made of a system pressure-sensitive adhesive or the like is adhered, and a release paper 15 is adhered to the surface of the pressure-sensitive adhesive layer 3.
The adhesive layer 3 is preferably provided only on the inner side surface 2a of the rising portion 2 as described above.
The adhesive layer 3 may be provided on the entire or half surface of the inner surface 5a of the flat portion 5 together with the inner surface 2a.

Next, a second embodiment will be described with reference to FIGS.
This loss prevention guard member is obtained by mainly deforming the shape of the concave portion 10 and the convex portion 11 in the upright holding means 6, and the same or corresponding parts are denoted by the same reference numerals, and description thereof is omitted.
As described above, the upright holding means 6 includes a concave portion 10 and a convex portion 11 provided so as to be fitted to each other of the inclined surfaces 8 and 9. The abutting surface 10b (corresponding to the side surface of the concave portion 10 facing the vertical wall of the convex portion 11 when the shock absorber 1 is unfolded) elastically presses the upper surface 11b of the convex portion 11 with the upper surface 11b of the convex portion 11 The gap X between the concave portion 10 and the thin portion 7 is slightly narrower than the height of the convex portion 11 (exaggerated in FIGS. 10 to 13).
In the illustrated example, the convex portion 11 is formed to be thinner than the concave portion 10, but may be substantially the same thickness as the width of the concave portion 10 .
Further, the rising portion 2 and the flat portion 5 do not form the concave grooves 12 and 13 as described above, and the square and rectangular penetrating through the front and back surfaces 2a, 5a, 2b and 5b are formed at appropriate positions. The holes 14 are arranged in an orderly manner.

Next, a third embodiment will be described with reference to FIGS.
This loss prevention guard member is mainly a modification of the upright holding means 6, and the same or corresponding parts as those described above are denoted by the same reference numerals, and description thereof is omitted.
The upright holding means 6 includes a through-hole 16 provided corresponding to the cross-sectional shape of the inclined surface 8 so as to penetrate through the thickness direction of the shock absorber 1 at an appropriate position in the longitudinal direction on one inclined surface 8, and the other inclined surface 8. On the surface 9, when the buffer body 1 is bent and deformed, the elastic deformation projecting so as to pass through the through-hole 16 and engage with the outer side surface 2 b of the rising portion 2 (corresponding to the rear surface 2 b in the unfolded state of the buffer body 1). It consists of possible nail pieces 17. In the inclined surface 9, a right-angled triangular plate-like projecting piece 18 is provided at a portion corresponding to the through-hole 16 so as to match the cross-sectional shape of the through-hole 16 and thinner than its width.
Then, the claw piece 17 that continues upward from the built-up portion 19 that bulges on the side wall (vertical wall in the unfolded state of the shock absorber 1) of the protruding piece 18 facing the through hole 16 is formed from the upper end surface of the protruding piece 18. It protrudes upward.
Similarly to the second embodiment, square or rectangular through holes 14 penetrating the front and back surfaces 2a, 5a, 2b, and 5b are arranged in order at appropriate positions of the rising portion 2 and the flat portion 5.

In the use of the guard member for preventing damage that is configured as described above, the buffer body 1 is bent and deformed from an expanded state to an L shape.
The buffer body 1 that has been bent and deformed is preferably attached to the lower corner portion or side ridge portion that easily collides with an obstacle or the like during the transfer of the concrete product W, but other corner portions or side ridge portions. It may be attached to the part.
9, 19, and 29 show one use example of the first to third embodiments for the concrete product W formed of a U-shaped groove.
This kind of concrete product (U-shaped groove) W is loaded in a pyramid shape in the inverted state during storage and transportation, so the outer surface W1 of the side wall and the upper end surface W2 (which becomes the ground contact surface in the inverted state) The shock absorber 1 is attached to the corner or side ridge (in the illustrated example, the corner).

First, in the bending deformation of the buffer body 1 of the first and second embodiments, when the rising portion 2 is bent with respect to the flat portion 5 with the thin portion 7 as a fold, the inclined surfaces 8 and 9 collide with each other. At the same time, the convex portion 11 projecting from the inclined surface 9 is fitted into the concave portion 10 provided on the inclined surface 8.
In such a fitting state, in the shock absorber 1 of the first embodiment, the both side surfaces 10a of the concave portion 10 elastically sandwich the both side surfaces 11a of the convex portion 11, and the shock absorber of the second embodiment. 1, the abutting surface 10 b of the concave portion 10 with the upper surface 11 b elastically presses the upper surface 11 b of the convex portion 11, so that the fitting state is reliably and firmly held. The standing state is maintained.
Further, in the bending deformation of the buffer member 1 in the third embodiment, similarly to the above, the inclined surfaces 8 and 9 by Okoshikyoku a rising portion 2 to the flat portion 5 a thin part 7 as folds mutual Collide with.
At the time of this collision, the claw piece 17 protrudes from the upper end surface of the projecting piece 18 projecting from the inclined surface 9 into the through hole 16 provided in the inclined surface 8, so that the claw piece 17 is bent due to its material characteristics. Elastically deformed to pass through the through-hole 16 together with the projecting piece 18, and at the same time elastically recovers and hooks around the outlet periphery of the through-hole 16 on the outer surface 2b of the rising portion 2, As a result, the rising portion 2 is prevented from falling and the upright standing state is maintained.

And the release paper 15 on the surface of the adhesive layer 3 provided on the inner surface 2a of the rising portion 2 in the standing state
To expose the adhesive surface.
Next, the flat portion 5 is brought into contact with the side wall upper end surface W2 constituting the corner portion or the side ridge portion of the U-shaped groove W, and the rising portion 2 is bonded to the side wall outer surface W1 through the adhesive layer 3.
Further, in the shock absorber 1 in which the adhesive layer 3 is provided on both inner side surfaces 2a and 5a of the rising portion 2 and the flat portion 5, the side wall outer side surface W1 and the side wall upper end surface W2 are respectively interposed through the respective adhesive layers 3. The rising portion 2 and the flat portion 5 are bonded.
Thus, after attaching the buffer body 1 to a corner part or a side ridge part, the U-shaped groove W is reversed and suspended and loaded.
During this loading and transfer, the impact or landing caused by the U-shaped groove W colliding with other U-shaped grooves W or other obstacles in the vicinity thereof (the ground surface of the storage place or other inverted U-shaped grooves W) The shock generated by lowering to the upper surface is relaxed by the buffer 1 to prevent the occurrence of defects.
In addition, after the U-shaped groove W is laid on the site, the buffer body 1 can be peeled off from the U-shaped groove W together with the adhesive layer 3 to perform normal construction.
In addition, like the U-shaped groove in the illustrated example, when the portion covered with the buffer body 1 is exposed to the ground after the construction, the one provided with the adhesive layer 3 only on the rising portion 2 is used. Is preferred.
The buffer 1 is only attached to the U-shaped groove W only by the adhesive layer 3 provided on the rising portion 2, so that a part of the adhesive layer 3 is placed on the surface of the U-shaped groove W by removing the buffer 1. Even if it remains, that portion is the side wall outer surface W1 that will be buried after construction, and the side wall upper end surface W2 exposed on the ground surface after construction is just abutted with the flat portion 5, so that the adhesive layer is on the surface This is because 3 does not remain and does not affect the appearance.

It is a top view which shows the expansion | deployment state of the guard member for a defect | deletion prevention . It is a front view same as the above. It is a bottom view same as the above. It is AA sectional drawing of FIG. It is a front view of a bending deformation state. It is a right side view same as the above. It is a left side view same as the above. It is BB sectional drawing of FIG. It is a figure which shows an example of a use condition. It is a top view which shows the expansion | deployment state of a 2nd Example. It is a front view same as the above. It is a bottom view same as the above. It is CC sectional drawing of FIG. It is a front view of a bending deformation state. It is a top view same as the above. It is a right side view same as the above. It is a left side view same as the above. A D over D sectional view of FIG. 15. It is a figure which shows an example of a use condition. It is a top view which shows the expansion | deployment state of a 3rd Example. It is a front view same as the above. It is a bottom view same as the above. It is EE sectional drawing of FIG. It is a front view of a bending deformation state. It is a top view same as the above. It is a right side view same as the above. It is a left side view same as the above. It is FF sectional drawing of FIG. It is a figure which shows an example of a use condition.

Explanation of symbols

1 Buffer 2 Rising part
2a Inside surface
2b Outer surface 3 Adhesive layer 4 Bending / extending part 5 Flat part
5a Inner side 6 Standing holding means 7 Thin part 8 Inclined surface 9 Inclined surface
10 Recess
10a Both sides
10b Colliding surface
11 Convex
11a Both sides
11b Top surface
16 Through hole
17 Claw piece W Concrete product

Claims (2)

A rectangular plate provided with a bent and stretched portion that bisects the left and right sides can be bent and deformed into an L shape by using the bent and stretched portion, and a buffer provided with an upright holding means for bending the left and right sides of the bent and stretched portion Prevention of breakage of a concrete product comprising a body and an adhesive layer provided on each of the inner surface of the rising portion and the flat portion constituting the buffer body or only on the inner surface of the rising portion so as to be able to adhere to and peel from the concrete product The bend / extension part is provided with an inclined surface that is inclined upward and downward to the left and right with the thin part as a boundary, and is provided with an inclined surface that abuts when the buffer body is bent and deformed. It is characterized in that there is provided an upright holding means comprising a concave portion and a convex portion to be fitted, and an abutting surface of the concave portion with the upper surface of the convex portion elastically presses the upper surface of the convex portion in the fitted state. Lack of concrete products Prevention for the guard member. A rectangular plate provided with a bent and stretched portion that bisects the left and right sides can be bent and deformed into an L shape by using the bent and stretched portion, and a buffer provided with an upright holding means for bending the left and right sides of the bent and stretched portion Prevention of breakage of a concrete product comprising a body and an adhesive layer provided on each of the inner surface of the rising portion and the flat portion constituting the buffer body or only on the inner surface of the rising portion so as to be able to adhere to and peel from the concrete product A guard member provided on one of the inclined surfaces, wherein the bent and extended portion is inclined upward and downward to the left and right with a thin portion as a boundary, and is provided with an inclined surface that abuts when the buffer body is bent and deformed. An upright holding means comprising a through-hole penetrating in the thickness direction of the slab and an elastically deformable claw piece protruding from the other inclined surface so as to pass through the through-hole and engage with the outer surface of the rising portion. characterized by providing Nkurito product loss prevention for the guard member.

Images