JP2012106752A - Spacer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spacer having one shape and used for vertically stacked concrete products and horizontally arranged concrete products.SOLUTION: In the spacer, a connection end A on one end side of a bar-shaped body and a connection end B on the other end side are freely connected to and separated from each other and bent parts bendable at a right angle and capable of holding a bent state are provided in an intermediate part. Each of the bent part has a hinge portion formed to have a thin wall and can be bent and slope portions formed opposite to each other at 90° on both sides sandwiching the hinge portion. A projecting part is formed on one slope portion and a recessed part in which the projecting part can be fitted is formed in the other slope portion, and when the hinge portion is bent to bring both the slope portions into contact with each other, the projecting part is fitted in the recessed part and the bent part is held in a folded state at the right angle.

Description

  The present invention relates to a spacer that is interposed between concrete products to keep the interval between the concrete products when the concrete products are stocked or transported.

  For example, as disclosed in Patent Document 1 below, this type of spacer has a plate shape, and both ends serve as connecting portions so that a plurality of spacers can be connected. One connecting portion is a thin plate-like body, and the other is a hollow portion into which the plate-like body is inserted in the axial direction. An engaging convex part is formed on the plate surface of the plate-like body, and an engaging hole is formed in the hollow part. When the plate body is inserted into the hollow part, the engaging convex part engages with the engaging hole and the connecting part comes off. It becomes difficult.

  When interposing between vertically stacked concrete products, the spacer may be a simple plate, but when interposing between concrete products arranged in the horizontal direction, the spacer is attached to an axis at one end of the spacer. An engagement portion extending in a direction perpendicular to the direction is provided, and the spacer is prevented from falling by hooking the engagement portion on the upper surface of the concrete product and interposing the spacer between the concrete products.

Japanese Patent No. 3007028

  In the case of using the spacers of Patent Document 1 interposed between concrete products stacked in the vertical direction, simple spacers are used and used between concrete products arranged in the horizontal direction. In some cases, one having an engaging portion at one end is used, so two kinds of different ones have to be prepared depending on how the concrete products are arranged.

  Moreover, since the connection part of the said patent document inserts a plate-shaped body into a hollow part in an axial direction, even if an engagement convex part engages with an engagement hole, if a tensile force acts, a connection part will be I sometimes missed out.

  It is an object of the present invention to make it possible to use a concrete product stacked in a vertical direction as well as a concrete product arranged in a horizontal direction in one kind of shape, and to make it difficult for the connecting portion to come off. To do.

[Claim 1]
The present invention is a spacer that is interposed between concrete products to maintain the product interval,
The A connection end on one end side of the rod-shaped main body and the B connection end on the other end side can be connected and separated from each other.
In the middle part, it has a bent part that can be bent at a right angle and hold the bent state,
The bent portion has a hinge portion that is formed with a thin wall thickness and can be bent, and slope portions that are formed opposite to each other at an angle of 90 ° on both sides of the hinge portion,
A convex part is formed on the one slope part, and a concave part is formed on the other slope part in which the convex part can be fitted,
The spacer is characterized in that when the hinge portion is bent and both the inclined portions are brought into contact with each other, the convex portion is fitted into the concave portion, and the bent portion is held at a right angle. is there.

  Since the spacer of the present invention has a bent portion, it can be used without folding the bent portion for a concrete product stacked in a vertical direction, and the bent portion is bent at a right angle for a concrete product arranged in a horizontal direction. Can be used. Therefore, one type can be used regardless of how the concrete products are arranged.

  Further, as will be described later, by connecting a plurality of pieces in a bent state or in a non-bent state, it can be formed into quadrilaterals of various sizes and is convenient for use as a spacer for a large concrete product.

[Claim 2]
Further, in the present invention, the A connecting end has a protrusion protruding in a direction perpendicular to the axis of the spacer, and an elongated locking portion formed at the tip of the protrusion and extending in a direction perpendicular to the protruding direction of the protrusion,
The B connecting end has an elongated locking hole into which the locking portion can be inserted,
After the locking portion is inserted into the locking hole, the A connecting end and the B connecting end are rotated relative to each other, so that the angles of the locking portion and the locking hole are shifted and the A connecting end and the B connecting end The spacer according to claim 1, which is connected.

  If the AB connecting end is configured in this way, the connecting portion is not inserted in the axial direction, and therefore the connecting end does not come out even if an axial tensile force acts on the connecting portion.

[Claim 3]
In the present invention, the spacer main body has a polygonal cross section or a circular rod shape, and a bulging portion having a diameter larger than that of the main body is provided at intervals in the main body, and the spacer is interposed between concrete products. The spacer according to claim 1, wherein the bulging portion is in contact with the surface of the concrete product.

In the present invention, the polygon is a shape that maintains 3 or more corners (triangular or more), and is preferably a regular polygon.
Compared to the conventional thin plate-like spacer body, the raw material of the spacer can be greatly saved by providing a bar-like bulging portion with an interval.

The spacer of the present invention can be used for a concrete product stacked in a vertical direction as well as a concrete product arranged in a horizontal direction in one kind of shape.
Further, by connecting a plurality of pieces in a bent state or in a non-bent state, they can be combined in various shapes and sizes, and are convenient for use as a spacer for a large concrete product.

  Further, when the A connecting end and the B connecting end are relatively rotated so that the angles of the locking portion and the locking hole are shifted so that the A connecting end and the B connecting end are connected, the connecting portion is moved in the axial direction. Since it is not inserted, even if a tensile force acts on the connecting portion, the connecting end does not come off.

  Furthermore, the spacer main body of the present invention is rod-shaped, and by forming the bulging portion with a gap, the raw material of the spacer can be greatly saved as compared with the conventional thin plate-like spacer main body.

1 is a schematic overall view of a spacer 1. It is a side view which abbreviate | omits and shows the intermediate part of the spacer. It is a front view which abbreviate | omits and shows the intermediate part of the spacer. It is explanatory drawing of the bending part. It is explanatory drawing of the bending state of the bending part. It is explanatory drawing of A connection end. It is explanatory drawing of B connection end. It is explanatory drawing of the connection state of AB connection end. It is explanatory drawing of the bulging part. It is explanatory drawing of the bulging part. It is explanatory drawing of the use condition of the spacer. It is explanatory drawing of the use condition of the spacer. It is explanatory drawing of the use condition of the spacer. It is explanatory drawing of the use condition of the spacer.

Hereinafter, the present invention will be described in detail with reference to the drawings showing examples.
The spacer 1 of the embodiment is made of plastic, and as shown in FIG. 1, the rod-shaped main body 1a has an A connecting end 3a on one end side, a B connecting end 3b on the other end side, and two bent portions at an intermediate portion. Part 2. The spacer main body 1a is provided with a plurality of bulging portions 5 and 6 at intervals. As shown in FIGS. 9 and 10, the main body 1a has a square cross-sectional shape.

  As shown in FIG. 4, the bent portion 2 has a plate shape, and a hinge portion 21 extending in a direction perpendicular to the axis of the spacer is formed in the central portion. The hinge part 21 can be bent because it is thin. On both sides of the hinge 21, slopes 22 and 23 are formed opposite to each other at an angle of 90 °. A convex portion 24 is formed to protrude from the slope portion 22, and a concave portion 25 into which the convex portion 24 can be fitted is formed in the slope portion 23.

  As shown in FIG. 5, when the hinge portion 21 is bent 90 ° and both slope portions 22 and 23 are brought into contact with each other, the convex portion 24 is fitted into the concave portion 25, and the bent portion 2 is bent at a right angle. Held in a state.

  The A connecting end 3a is formed in a state where the plate-like portion 31 is eccentric from the spacer axis, and a protruding portion 32 projects from the plate surface in a direction perpendicular to the spacer axis (perpendicular to the plate surface). . An elongated locking portion 33 extending in a direction perpendicular to the protruding direction of the protruding portion 32 is formed at the tip of the protruding portion 32. The holes 34 and 35 are provided for the convenience of plastic material saving and molding.

  The B connection end 3 b has a plate-like portion 36, and an elongated locking hole 37 into which the locking portion 33 can be inserted is formed in the plate-like portion 36. Further, two protrusions 38 are provided on both sides of the plate-like portion with the locking holes 37 therebetween, for a total of four. The protrusion 38 is for positioning the locking portion 33 between the protrusions 38 when the AB connecting ends are connected as shown in the lower part of FIG.

Next, a procedure for connecting the AB connecting ends 3a and 3b will be described.
First, as shown in the upper part of FIG. 8, the AB connection is performed in the state in which the direction of the locking portion 33 of the A connecting end 3a and the locking hole 37 of the B connecting end 3b are aligned (the axis of each connecting end is a right angle). The ends 3a and 3b are overlapped. Next, as shown in the middle part of FIG. 8, the B connecting end 3 b is pushed down in the direction of the back side of the drawing sheet so that the locking part 33 passes through the front side of the locking hole 37. Next, when the B connecting end 3b is rotated by 90 ° and the axes of the AB connecting ends 3a and 3b are aligned, the connection is completed as shown in the lower part of FIG. The reverse procedure may be performed to separate the connecting portion.

The main body 1a of the spacer is provided with bulging portions 5 and 6 having a diameter larger than that of the main body with a space therebetween. The bulging portions 5 and 6 are in contact with the surface of the concrete product when the spacer 1 is interposed between the concrete products.
As shown in FIG. 9, the bulging portion 5 has a shape obtained by cutting a circular central portion. As shown in FIG. 10, the bulging portion 6 has a shape in which the center of a square is cut. Such a cut is not necessarily required. Since the bulging portion 5 is circular, the contact area with the concrete product is extremely small, and therefore the discoloration area of the product surface is also extremely small. Since the bulging portion 6 is square, the strength is greater than that of the bulging portion 5. In this embodiment, the bulging portions 5 and 6 are combined to prevent the product surface from being discolored and balance the spacer strength.

  FIG. 11 shows an example in which the spacer 1 is used for a concrete product arranged in a horizontal direction. The spacer 1 is bent at one bent portion 2 into an L shape, and its short side is on the upper surface of the concrete product 7. It is used by hooking.

  12 and 13 are examples in which the bent portion 2 is used in a state in which the spacer 1 is not bent, with respect to the concrete product 7 stacked in the vertical direction. As shown in FIG. 12, two spacers 1 are arranged in parallel on the concrete product 7, and the concrete products 7 are sequentially stacked as shown in FIG.

FIG. 14 shows an example in which slightly large concrete products 7 are stacked in the vertical direction. The spacer 1 is bent at one bent portion 2 into an L shape, and four of them are connected to assemble a square. The spacer assembled in the square is placed on the concrete product 7 and the concrete products 7 are sequentially stacked.
By increasing the number of spacers to be connected, larger squares and rectangles can be assembled.

DESCRIPTION OF SYMBOLS 1 Spacer 1a Main body 2 Bending part 21 Hinge part 22 Slope part 23 Slope part 24 Projection part 25 Concave part 3 Connection part 3a A connection end 3b B connection end 31 Plate-like part 32 Projection part 33 Locking part 34 Hole 35 Hole 36 Plate Shaped part 37 Locking hole 38 Protrusion 4 Body 5 Swelling part 6 Swelling part 7 Concrete product

Claims (3)

A spacer interposed between concrete products to maintain the product interval,
The A connection end on one end side of the rod-shaped main body and the B connection end on the other end side can be connected and separated from each other.
In the middle part, it has a bent part that can be bent at a right angle and hold the bent state,
The bent portion has a hinge portion that is formed with a thin wall thickness and can be bent, and slope portions that are formed opposite to each other at an angle of 90 ° on both sides of the hinge portion,
A convex part is formed on the one slope part, and a concave part is formed on the other slope part in which the convex part can be fitted,
The spacer is characterized in that when the hinge portion is bent and both the inclined portions are brought into contact with each other, the convex portion is fitted into the concave portion, and the bent portion is held at a right angle. The A connecting end has a protrusion protruding in a direction perpendicular to the axis of the spacer, and an elongated locking portion formed at the tip of the protrusion and extending in a direction perpendicular to the protrusion direction of the protrusion;
The B connecting end has an elongated locking hole into which the locking portion can be inserted,
After the locking portion is inserted into the locking hole, the A connecting end and the B connecting end are rotated relative to each other, so that the angles of the locking portion and the locking hole are shifted and the A connecting end and the B connecting end The spacer according to claim 1, which is connected. The spacer body has a polygonal or circular rod shape in cross section, and bulges having a diameter larger than that of the main body are provided at intervals in the body, and the bulges are disposed when the spacer is interposed between concrete products. The spacer according to claim 1 or 2, which contacts a surface of a concrete product.

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