JP2002121900A - Drive plug - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drive plug requiring no strict control over a dimensional relation with the inner diameter of a hole for fluid injection. SOLUTION: This is a drive plug 20 to be used when leveling the surface of a structural body by driving the plug into a fluid injecting hole 9 formed through a spatial portion in a structural bodies such as a road surface, a building or the like after injecting a fluid 13 such as an adhesive, a water stop agent, a water seal agent or the like at an intermediate low pressure to a fluid injecting hole 9, comprising a conical skirt portion 22 formed at least in two stages in an axial direction with the diameter getting smaller continuously from a diameter slightly larger than the inner diameter of a fluid injecting hole 9 to a slightly smaller diameter continuously, and then constituted by containing an anchor portion 26 including an extended portion in a radius direction from the coupling portion 24 provided as one united body through a coupling portion 24 at a small diameter side of the skirt portion 22. As a whole, it is made of a hard elastic body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to cracks, cracks,
A road surface where a space portion such as a gap is generated, a fluid injection hole formed through the space portion in a structure such as a building, an adhesive to the space portion through the fluid injection hole, The present invention relates to a driving plug used for injecting a fluid such as a waterproofing agent or a waterproofing agent at a medium to low pressure and then driving the fluid into the fluid injection hole to level the surface of the structure evenly. The present invention relates to a driving plug which can be easily driven into a fluid injection hole using a striker such as a hammer, and does not come out of the fluid injection hole after the driving.

[0002]

2. Description of the Related Art For example, cracks, cracks, and gaps are generated in structures such as concrete buildings and tunnels due to various causes. When only cracks and the like can be dealt with, an operation of injecting a synthetic resin or cement paste into the cracks is performed. Such synthetic resins include epoxy resins, polyurethanes,
There are acrylic resins and their foam materials, and examples of the cement paste include inorganic polymer cement pastes and organic polymer cement pastes.

FIGS. 4 (a) to 4 (d) are schematic cross-sectional views at each stage for explaining a conventional repair method at a building mortar peeling site. First, concrete surface 1
The part where the mortar 3 has peeled off from the is detected by hitting it with a mallet or the like, for example, and using the echo sound. Next, as shown in FIG. 4A, a hole 9 for fluid injection is formed by using an electric drill 5 to penetrate the space 7 generated by the separation and reach the inside of the concrete. When the fluid 13 such as an adhesive, a water blocking agent, and a waterproofing agent is injected at a medium pressure of about 1 to 9 MPa, a packer type injection plug 11 as shown in FIG. When the injection is performed at a low pressure of about 1 to 1 MPa, a fluid 13 such as an adhesive, a water stopping agent, or a waterproofing agent is injected into the fluid injection hole 9 using a plastic capsule 15 as shown in FIG. Fill. After filling, adhesive,
Before the fluid such as the waterproofing agent and the waterproofing agent is completely hardened, the injection jig such as the packer type injection plug 11 and the plastic capsule 15 is removed, and a wooden or plastic slight as shown in FIG. A conical frusto-conical plug 17 tapered into the hole was hammered into the fluid injection hole with a hitting device such as a hammer. Alternatively, a putty for surface repair was applied to the surface side of the fluid injection hole.

[0004]

In the conventional plug 17 described above, unless the plug 17 which substantially matches the inner diameter of the fluid injection hole 9 is used, it cannot be inserted into the fluid injection hole 9 satisfactorily or slowly. There was a drawback that it easily escaped. Further, when the object to be repaired is a pavement surface of a road, the tire of the automobile repeatedly runs on the plug or putty, and there is a disadvantage that the tire easily comes off due to the vibration.

Accordingly, an object of the present invention is to eliminate the need to control the dimensional relationship with the inner diameter of the fluid injection hole so strictly.
Nevertheless, it is an object of the present invention to provide a driving plug for use in a fluid injection hole which does not come off in any use mode. Another problem of the present invention is that when such a driving plug is inserted into a fluid injection hole and then driven by a hitting device such as a hammer, the driving plug has its axial direction aligned with the center axis of the fluid injection hole. It is an object of the present invention to provide a driving plug which is guided so as to coincide with each other and smoothly enters the inside. Another object of the present invention is to provide a driving plug in which, when the driving plug is inserted and fixed in the fluid injection hole, there is no projecting portion on the surface of the structure, and therefore the surface of the structure is leveled evenly. It is to provide. It is another object of the present invention to provide a stamping device that is not unique in color even when used on the surface of a structure having various colors such as concrete, asphalt, and colored surface materials, and makes it difficult to understand the position of the fluid injection hole. To provide a plug-in plug. It is still another object of the present invention to provide a driving plug which can be smoothly inserted into a fluid injection hole without bouncing when driven by a hitting device such as a hammer. It is still another object of the present invention to provide a driving plug in which the frictional resistance to the fluid injection hole is increased to make it difficult for the plug to fall off.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is to form a structure such as a road surface, a building or the like where a space such as a crack, a crack or a gap is generated through the space. A fluid such as an adhesive, a water blocking agent, a waterproofing agent, or the like is injected into the space through the fluid injection hole at medium to low pressure through the fluid injection hole, and is driven into the fluid injection hole. A driving plug used for leveling the surface of the fluid injection hole, wherein at least two stages are formed in the axial direction in which the diameter continuously decreases from a diameter slightly larger than the inner diameter of the fluid injection hole to a slightly smaller diameter. A conical skirt portion, and an anchor portion integrally provided on the small diameter side of the skirt portion via a connecting portion and including a portion extending in a radial direction from the connecting portion. We provide a driving plug made of a hard elastic body To.

Since the driving plug of the present invention is entirely made of a hard elastic body, even if the driving plug has a diameter slightly larger than the inner diameter of the fluid injection hole, it is driven by a hammer or the like. It can be tightly inserted and fixed in the hole. Further, since the conical skirt portion formed in at least two stages in the axial direction closely adheres to the inner surface of the fluid injection hole, the driving plug does not come out of the fluid injection hole with a slight force or vibration. Further, in addition to this, the anchor portion enters into a fluid such as an adhesive, a water blocking agent, a waterproofing agent, and the like before curing, and is cured in that state. Once cured, the adhesive, water blocking agent, waterproofing agent, etc. become solid and almost completely prevent the drive plug from slipping out. As a result, when the repair target is a pavement surface of a road, even if the tire of the automobile repeatedly runs on the pavement surface, it is possible to almost completely prevent the tire from coming off due to the vibration.

According to a second aspect of the present invention, in the driving plug according to the first aspect, a cylindrical guide portion is formed between the skirt portion and the connecting portion. A cylindrical guide automatically guides the drive plug along the fluid injection hole. This eliminates the need for holding by hand when hitting with a hitting device such as a hammer, and can prevent an accident of hitting a finger by mistake.
Further, since there is no need to worry about bending, the head of the driving plug can be hit with a large force, and the operation is quick and accurate. According to a third aspect of the present invention, in the driving plug according to the first or second aspect, a cylindrical head portion smaller than the diameter of the fluid injection hole is provided on the large diameter side of the outermost skirt portion. It is characterized by being formed integrally.
When the driving plug is driven into the fluid injection hole, the outermost portion of the driving plug projects beyond the fluid injection hole. On the large-diameter side of the outermost skirt portion, the cylindrical head portion smaller than the diameter of the fluid injection hole provides a hitting surface for receiving the force when driving the driving plug into the fluid injection hole, The surrounding space provides space for the protruding part. As a result, the surface of the structure is leveled substantially flat.

The present invention described in claim 4 provides the present invention according to claims 1 to 3.
The driving plug according to any one of the above, wherein the driving plug is colored in a color that matches the color of the structure. The structure has various colors, such as a case where concrete is left over, a case of asphalt, or a mortar mixed with various pigments.
With a single color, if the color of the driving plug differs from the color of the structure, its presence will be prominent. Since the driving plug is colored in a color that matches the color of the structure, it is difficult to notice the presence of the driving plug. Accordingly, the repair can be prevented from being noticed by the general public.

The present invention according to claim 5 provides the present invention according to claims 1-4.
In the driving plug according to any one of the above, the driving plug is made of hard rubber having a hardness of 90 to 95 °. When the driving plug is driven by a hitting device such as a hammer, the hitting device can be inserted and fixed in the fluid injection hole without repelling the hitting device. Once inserted and fixed, make sure that it does not come off easily due to friction.

The present invention described in claim 6 provides the invention according to claims 1 to 5
The driving plug according to any one of the above, wherein an angle of the outer conical surface of the skirt portion with respect to the axis is 12 to 15 °. Once the driving plug is inserted and fixed in the fluid injection hole, it is prevented from easily coming off due to friction.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a driving plug according to the present invention. FIG. 1 is a cross-sectional view of one embodiment of a driving plug according to the present invention, and (a) and (b) are a left side view and a front view, respectively. As shown in FIG. 1, the driving plug 20 according to the present invention generally includes a conical skirt portion 22 formed in at least two stages in the axial direction, and
An anchor portion 26 is provided integrally on the small diameter side of the skirt portion via the connecting portion 24 and includes a portion extending in the radial direction than the connecting portion 24. The skirt portion 22 has a continuously decreasing diameter from the outside of the fluid injection hole 9 toward the inside. The outermost portion has a diameter slightly larger than the inner diameter of the fluid injection hole 9, and the opposite side has a slightly smaller diameter than the fluid injection hole 9.

In the illustrated preferred embodiment, the skirt portion 22 is provided in two stages in the axial direction, but it is needless to say that the skirt portion 22 is not limited to two stages but may be three stages. Further, since the conical skirt portion 22 formed in at least two stages in the axial direction closely adheres to the inner surface of the fluid injection hole 9, the driving plug 20 comes out of the fluid injection hole 9 with some force or vibration. Never. The angle of the outer conical surface of the skirt portion 22 with respect to the axis is 12 to 15 °. Thereby, when the driving plug 20 is driven into the fluid injection hole 9 by a driving tool such as a hammer, the driving plug 20 is smoothly inserted, and
Once the driving plug 20 has been inserted and fixed in the fluid injection hole 9, it does not easily come off due to friction.

The distal end of the anchor portion 26 has a conical shape so that it can easily enter into a fluid such as an adhesive, a water blocking agent, a waterproofing agent or the like before curing, and the center thereof is a point 26a. . The diameter of the anchor portion 26 is larger than that of the connecting portion 24. The adhesive, water blocking agent, waterproofing agent, etc., which has entered the periphery of the connecting portion 24 on the back side of the anchor portion 26, have an effect of preventing the driving plug 20 from coming out of the fluid injection hole 9 after solidification. Have. As a result, when the repair target is a pavement surface of a road, even if the tire of the automobile repeatedly runs on the pavement surface, it is possible to almost completely prevent the tire from coming off due to the vibration. The shape of the anchor portion 26 may be any shape. For example,
In the case of a spherical shape, even if the driving plug 20 comes out of the fluid injection hole 9, there is no risk of hitting a person and injuring a person because there is no sharp portion.

Since the entire driving plug 20 of the present invention is made of a hard elastic material, for example, rubber having a hardness of 90 to 95 °, the diameter of the driving plug 20 is slightly larger than the inner diameter of the fluid injection hole 9. Can be tightly inserted and fixed in the fluid injection hole 9 by hitting it with a hammer or the like. Further, by having such hardness, when the driving plug 20 is driven by a hitting device such as a hammer, the driving device can be inserted and fixed into the fluid injection hole 9 without repelling the hitting device. Once inserted and fixed, make sure that it does not come off easily due to friction.

Next, a method of using the driving plug of the present invention will be described with reference to FIGS. FIG. 4 (a)
Steps (c) to (c) are the same as those in the related art, and a description thereof will be omitted. After injecting a fluid such as an adhesive, a water blocking agent, or a waterproofing agent into the fluid injecting hole 9 and the space 7 using a packer type injecting plug 11 or a fluid injecting device such as a plastic capsule 15, a driving plug 20 is used. Is brought down with the anchor part 26 down (see FIG. 2A), and is inserted into the fluid injection hole 9 as it is. The guide plug 28 allows the driving plug 2
The axis 0 is guided so as to substantially coincide with the axis of the fluid injection hole 9. That is, the driving plug 20 maintains a state of standing substantially perpendicular to the fluid injection hole 9 even if the operator does not have it. In this state, when the cylindrical head 30 of the driving plug 20 is hit with a driving tool such as a hammer,
The driving plug 20 is inserted into the fluid injection hole 9 until the surface of the cylindrical head 30 is substantially at the same height as the surface of the structure, and is tightly fixed in that state. The large-diameter portion of the outermost skirt portion 22 is pushed so as to be lifted out of the fluid injection hole 9 but protrudes from the surface of the structure so as to be housed in the space around the cylindrical head portion 30. There is no.

The present invention is directed to a fluid injection hole formed in a structure such as a road surface or a building where a space such as a crack, a crack or a gap is generated through the space. A description has been given of a use in which a fluid such as an adhesive, a water stopping agent, or a waterproofing agent is injected into the space through a hole at a medium to low pressure, and then driven into the hole for fluid injection to level the surface of the structure. However, the present invention can also be applied to other uses, for example, a pipe hole through which a metal rod for holding a frame plate formed on a concrete wall or the like is passed.

[0018]

[Specific example] A driving plug according to the present invention and a conventional product (made of resin,
(Rubber stoppers, cork stoppers) were measured. The outer diameter of the present invention was measured at the position of the guide portion 28. In the case of the conventional product, the measurement was performed at the maximum diameter portion of the plug 17 shown in FIG. The difference from the inner diameter of the fluid injection hole 9 is -1.0.
When the internal pressure (Pa) at mm, -0.5 mm, zero gap, and +0.5 mm was measured, the results were as shown in Table 1. In the driving plug of the present invention, a sufficient tightness or a retaining effect was obtained from the minus gap to the plus gap. On the other hand, in the case of the conventional product, in the case of the zero clearance or the positive clearance, the stopper came off even when almost no pressure was applied. This means that it is necessary to control the inner diameter of the fluid injection hole 9 so as to always keep it minus the diameter of the stopper. Therefore, like the product of the present invention,
There is a disadvantage that handling becomes complicated as compared with a case where strictness is not required.

[0019]

[Table 1]

Table 2 shows the degree of insertion of the various plugs, that is, whether the driving plug 20 was inserted vertically into the fluid injection hole 9 or not. Again, the driving plug of the present invention was in good condition in all experimental situations. In the case of a resin stopper, when the minus width is too large, it becomes impossible to insert the resin stopper, and it is not inserted properly in the plus gap. In the case of the rubber stopper, the result was acceptable in the case of the minus gap or the zero gap, but was not inserted properly in the case of the plus gap. Cork stoppers resulted in most cases not being able to be inserted or not being properly inserted.

[0021]

[Table 2]

[0022]

According to the first aspect of the present invention, cracks,
Cracks, road surfaces where spaces such as gaps are occurring, to fluid injection holes formed through structures such as buildings in structures such as buildings, to the spaces through the fluid injection holes An injection plug used for injecting a fluid such as an adhesive, a water blocking agent, or a waterproofing agent at a medium to low pressure, and then driving the fluid into the fluid injection hole to level the surface of the structure. A conical skirt portion made of a hard elastic body, formed in at least two stages in the axial direction and having a continuously decreasing diameter from a slightly larger diameter to a slightly smaller diameter than the inner diameter of the fluid injection hole; The skirt portion includes an anchor portion integrally provided on the small diameter side of the skirt via the connection portion and including a portion extending in the radial direction than the connection portion. It is necessary to control the dimensional relationship with the inner diameter of the Ku has the advantage of being able to provide a hammering plug used nevertheless fluid injection hole without also escape in any mode of use.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an embodiment of a driving plug according to the present invention, wherein (a) and (b) are a left side view and a front view, respectively.

FIGS. 2 (a) to 2 (c) are schematic cross-sectional views of respective stages for explaining how to use the driving plug of the present invention shown in FIG. 1;

FIG. 3 is a graph showing the results of Table 1.

4 (a) to 4 (d) are schematic cross-sectional views at each stage for describing a conventional repair method at a building mortar peeling site.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete surface 3 Mortar 5 Electric drill 7 Space part 9 Fluid injection hole 11 Packer type injection plug 13 Fluid 15 Plastic capsule 17 Plug 20 Driving plug 22 Skirt part 24 Connecting part 26 Anchor part 28 Guide part 30 Cylindrical head part

Claims (6)

[Claims] 1. A fluid injection hole formed in a structure such as a road surface or a building where a space portion such as a crack, a crack or a gap is generated through the space portion. After injecting a fluid such as an adhesive, a water blocking agent, or a waterproofing agent into the space through the medium pressure at a low pressure, it is driven into the hole for fluid injection to level the surface of the structure. A plug having a conical skirt portion formed in at least two stages in the axial direction and having a diameter continuously decreasing from a slightly larger diameter to a slightly smaller diameter than the inner diameter of the fluid injection hole; and And an anchor portion integrally provided on the small diameter side of the skirt portion via the connecting portion and including a portion extending in the radial direction than the connecting portion. Driving plug. 2. The driving plug according to claim 1, wherein a cylindrical guide portion is formed between said skirt portion and said connecting portion. 3. The driving plug according to claim 1, wherein a cylindrical head portion smaller than the diameter of the fluid injection hole is integrally formed on the large diameter side of the outermost skirt portion. A driving plug characterized by being made. 4. The driving plug according to claim 1, wherein said driving plug is colored in a color that matches the color of said structure. . 5. The driving plug according to claim 1, wherein said driving plug is made of hard rubber having a hardness of 90 to 95 °. 6. The driving plug according to claim 1, wherein an angle of the outer conical surface of the skirt portion with respect to the axis is 12 to 15 °. Plug.