JP2023106782A - Adhesive injection nozzle for exterior wall repair of building and method of using the same - Google Patents

Abstract

To efficiently inject a repairing adhesive in a short time from the inside of a prepared hole drilled in an exterior wall of a building to a floating portion generated on the exterior wall.SOLUTION: There is provided an adhesive injection nozzle (N) for an exterior wall repair including a rigid thick nozzle body pipe (17), a thin nose pipe (18) protruding integrally from a tip of the nozzle body pipe, and an elastic seal cover (21) inserted into a boundary between both pipes. With the nose pipe inserted into a prepared hole (G) of an exterior wall (W) and an inlet (22) of the prepared hole sealed with the seal cover, an adhesive outflow slit (23) having a length (L3) reaching from the tip of the nose pipe to a position facing a mutual gap (floating portion) between an exterior wall finishing material (tile) (13) and its pasting mortar (12) is cut open on a circumferential surface of the nose pipe.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to an adhesive injection nozzle used for exterior wall repair work of a building and its usage.

As an external wall repair adhesive injection nozzle for injecting an epoxy resin adhesive into a pre-drilled hole of a required depth drilled from tiles, stone materials, and other external wall finishing materials that decorate the external wall of a building to the inside of the concrete frame, Multiple layers of floats that are expected to occur not only inside the pilot hole but also in its depth direction over time, i.e., mutual gaps (first floats) between the concrete frame and the applied mortar, and the applied mortar and the outer wall Mutual gap (second floating part) between finishing material, mutual gap (first floating part) between concrete frame and base mortar, mutual gap (second floating part) between base mortar and pasting mortar, and pasting mortar Patent Documents 1 and 2 disclose inventions devised so that the adhesive can be filled even in the mutual gap (third floating portion) between the wall and the exterior wall finishing material.

Japanese Patent No. 4587886 Japanese Patent No. 6557907

However, in the configuration of the injection nozzle (12) described in Patent Document 1, the plurality of sub-discharge ports (50) opening in the circumferential surface of the nozzle cylinder (21) are connected to the concrete skeleton (2) and the (decorative material). To the mutual gap (first floating part) (5) between the mortar (7) and the mutual gap (second floating part) (6) between the mortar (7) and the decorative material (outer wall tile) (8) for pasting) , are scattered and distributed at corresponding positions facing each other. 1, 2 The adhesive (R) cannot be quickly and reliably filled up to the floating portions (5) and (6).

In other words, the depth of the insertion hole (pilot hole) (5) drilled from the decorative material (outer wall tile) (8) to the inside of the concrete frame (2), the first and second floating portions (5) If the location of occurrence of (6) changes, the formation position of the sub-ejection port (50) opening into the nozzle cylinder (21) of the injection nozzle (12) must also be changed, resulting in poor versatility.

In that case, even if the formation position of the sub-discharge port (50) corresponds to the position where the first and second floats (5) and (6) are generated, the injection nozzle (12) in the nozzle cylinder (21) will Since the sub-discharge port (50) is not formed at a position facing the mutual floats (5) and (6) (a portion corresponding to the thickness of the mortar (7)), the insertion is prevented. The inside of the filling hole (preliminary hole) (5) and the entirety of the first and second floating portions (5) and (6) cannot be efficiently filled with the adhesive (R) in a short period of time. The adhesive (R) tends to clog the sub-discharge port (50).

In addition, since the plurality of sub-discharge ports (50) are scattered on the circumferential surface of the nozzle cylinder (21), when they are formed radially on the circumferential surface of the nozzle cylinder (21), It is necessary to open the sub-discharge ports (50) one by one, which is very troublesome in terms of processing and leads to high manufacturing costs.

On the other hand, in the configuration of the injection nozzle (12) described in Patent Document 2, the first nozzle port (33) opening at the tip of the composite nozzle portion (21) is located at the deep portion (hole bottom portion) of the pilot hole (8). ), the second nozzle port (34) is formed at a position corresponding to the deep portion (bottom portion) of the pilot hole (8) for injecting the adhesive (R) into the pilot hole (8). ), the second nozzle port (34 ), even if the adhesive (R) can be injected into the third floating portion (6c), the nozzle ports facing the remaining first and second floating portions (6a) and (6b) are not formed correspondingly. The adhesive (R) can be quickly and reliably filled from the inside of the pilot hole (8) to the first and second floating portions (6a) and (6b) as well as the third floating portion (6c). Otherwise, the first and second nozzle openings (33) and (34) may be clogged.

Moreover, the injection nozzle (12) described in Patent Document 1 is assembled from the nozzle tube (21), the main body (22), the joint member (23) and the fastening member (24), and it is possible to disassemble it. is also a complex structure consisting of multiple parts.

Furthermore, the injection nozzle (12) described in Patent Document 2 is also assembled from the composite nozzle part (21), the opening sealing part (22), the nozzle body (23) and the casing part (24), and can be disassembled. However, it is still a complex structure consisting of multiple parts.

Therefore, neither of the injection nozzles (12) described in Patent Documents 1 and 2 can be expected to be effective in mass production, and the troublesome assembly and disassembly of the component parts requires a great deal of labor and time. The two-liquid type epoxy resin adhesive may harden and clog the sub-discharge port (50) and the first and second nozzle ports (33) and (34). A series of cleaning work (including solvent treatment) that needs to be done in consideration of the time required (usually about 2 hours) cannot be done easily and conveniently in a short time. It is inferior to

The object of the present invention is to solve such problems. Epoxy resin adhesive is injected into the pilot hole of the required depth, which is drilled from the outer wall finishing material to the inside of the concrete frame through only the pasting mortar or the pasting mortar and the base mortar. An adhesive injection nozzle for repairing an outer wall,

a rigid thick nozzle body tube with a removable fitting for a separate adhesive injection device at its proximal end;

a rigid thin nose tube integrally protruding forward from the tip of the nozzle body tube;

an elastic seal cover inserted from the front into the boundary between the nose tube and the nozzle body tube so as to be removable and insertable, and capable of sealing the inlet of the pilot hole;

A corresponding position facing the mutual gap between the outer wall finishing material and the mortar to which the nose pipe is attached from the tip of the nose pipe in a state where the nose pipe is inserted into the pilot hole and the inlet of the pilot hole is sealed with the seal cover. An adhesive outflow slit having a required length reaching up to the nose tube is cut open in the circumferential surface of the nose tube.

In that case, in claim 2, the nozzle body pipe made of metal and the nose pipe made of the same metal are welded and integrated in a state of concentric communication,

It is characterized in that the tapered conical surface of the seal cover made of chemical-resistant rubber is pushed into the inlet of the pilot hole and pressurized to keep the inlet sealed.

In claim 3, the notch opening width of the adhesive outflow slit is the same as the inner diameter of the nose tube, and the nose tube is formed to have a substantially U-shaped cross section.

A fourth aspect of the present invention is characterized in that the notch opening width of the adhesive outflow slit is narrower than the inner diameter of the nose tube, and the nose tube is formed to have a substantially C-shaped cross section.

Furthermore, in claim 5, the notch opening width of the adhesive outflow slit is set to a dimension narrower than the inner diameter of the nose tube, and a pair of the slits facing each other are notched and opened on the circumferential surface of the nose tube. do.

On the other hand, in claim 6, as a method of using the above-mentioned adhesive injection nozzle for exterior wall repair, a pre-hole of a required depth is drilled from the exterior wall finishing material of the building to the inside of the plastered mortar or through the plastered mortar to the surface of the concrete frame. Alternatively, the nose pipe of the adhesive injection nozzle for exterior wall repair described in claim 1 is inserted into the pilot hole of the required depth drilled from the exterior wall finishing material through the pasting mortar to the inside of the concrete frame, and the Under the condition that the inlet of the pilot hole is sealed with a seal cover,

By rotating the injection nozzle while injecting the epoxy resin adhesive into the pilot hole, the tip of the nose tube and the slit for the adhesive outflow not only the inside of the pilot hole but also the outer wall finishing material and its part. The adhesive is filled only in the gaps between the mortar to be applied, or the gaps between the exterior wall finishing material and the mortar to which the mortar is applied, and the gaps between the mortar to be applied and the concrete frame.

Also, in claim 7, as a method of using the adhesive injection nozzle, the adhesive injection nozzle is used in claim 1 to a pilot hole of a required depth that is drilled from the outer wall finishing material of the building through the pasting mortar and the base mortar to the inside of the concrete frame. Insert the nose tube of the described external wall repair adhesive injection nozzle, and under the condition that the inlet of the pilot hole is sealed with a seal cover,

By rotating the injection nozzle while injecting the epoxy resin adhesive into the pilot hole, the tip of the nose pipe and the slit for adhesive outflow not only the inside of the pilot hole, but also the concrete frame and the underlying mortar. , the mutual gap between the base mortar and the pasting mortar, and the mutual gap between the pasting mortar and the exterior wall finishing material are also filled with the adhesive.

In this case, in claim 8, the nose tube of the adhesive injection nozzle is inserted into the prepared hole so that the adhesive outflow slit formed by notching the peripheral surface of the nose tube faces downward, and the adhesive is adhered to the prepared hole. While injecting the drug,

rotating the injection nozzle 360 degrees clockwise or counterclockwise;

Alternatively, the injection nozzle is rotated in the order that the adhesive outflow slit of the nose tube is oriented laterally to one of the left and right sides and then to the other, and finally oriented upward.

In claim 9, the nose tube of the adhesive injection nozzle is inserted into the pilot hole so that a pair of facing adhesive outflow slits formed by notching the peripheral surface of the nose tube are oriented vertically. While injecting adhesive into

The injection nozzle is rotated clockwise or counterclockwise by 90 degrees so that the adhesive outflow slit of the nose tube is oriented laterally.

According to the above configuration of claim 1, there is an effect that all the problems of the prior art explained at the beginning can be improved.

That is, the adhesive injection nozzle for exterior wall repair described in claim 1 has a plurality of adhesive outlets, such as the injection nozzles described in Patent Documents 1 and 2, on the circumferential surface of the nozzle cylinder (nose tube). Unlike the configuration in which the openings are scattered and distributed, a single slit for adhesive outflow is formed on the circumferential surface of the nose tube, from the tip of the nose tube, between the outer wall finishing material and the mortar that is affixed (directly attached). It is a configuration in which a cutout is made to have a required length to reach (extend) to a corresponding position facing the mutual gap (floating portion).

Therefore, even if there are several layers of floats between the inner depths (hole bottoms) of the prepared holes drilled in the outer wall of the building and the outer wall finishing material, the floats will not be generated. Even if there is a difference in the location, it is not affected by these (without the need to form an opening at a position that corresponds to the location where the floating portion such as the adhesive outlet that is scattered and distributed). The adhesive can be reliably and efficiently spread and permeated from the slit to all the floating portions in a short period of time.

Moreover, the adhesive injection nozzle consists of a rigid thick nozzle tube and a rigid thin nose tube integrally protruding forward from the tip of the nozzle tube, and can be disassembled and assembled as a single piece. Since it has a simple structure, it can be expected to maximize the effect of mass production as an injection nozzle (product). The cleaning work of (1) can also be completed in a short time, lightly and conveniently, and by extension, the efficiency and on-site workability of the outer wall repair work in the building are improved.

In that case, if the configuration of claim 2 is adopted, the nozzle body pipe and nose pipe made of the same metal can be extremely easily welded and integrated by making the internal concentric communication state that becomes the flow path of the adhesive. can do. Since the seal cover inserted and fitted on the boundary of the two pipes is elastically deformed, the tapered conical surface can reliably seal the entrance of the pilot hole, and the diameter of the pilot hole (aperture) can be changed. Even if there is, there is also an effect that the tapered conical surface of the seal cover can naturally absorb and align this.

Further, if the configuration of claim 3 or claim 4 is adopted, not only can the notch processing of the adhesive outflow slit be performed quickly in one operation, but the slit may be clogged with the adhesive. do not have.

In particular, if the configuration of claim 5 is adopted, it is possible to notch the nose tube at once as a pair of split grooves (two lines extending in parallel) facing each other to form the adhesive outflow slits. There is also the effect that the injection and filling of the adhesive into the inside of the pilot hole and the floating portion of the outer wall can be performed more quickly and smoothly.

On the other hand, if the composition of claim 6 or claim 7 is adopted as a method of using the adhesive injection nozzle for repairing the outer wall, while the injection nozzle is used to inject the epoxy resin adhesive into the pilot hole of the outer wall, the Since the injection nozzle is designed to rotate, it is a simple configuration in which the adhesive outflow slit of the nose tube is cut and opened in the circumferential surface of the nose tube as a line extending for a required length. Even so, the adhesive can be smoothly filled into the interior of the pilot hole and the entirety of the float formed in communication with the pilot hole without leakage.

In that case, if the configuration of claim 8 is adopted, the nose tube of the adhesive injection nozzle is inserted into the pilot hole of the outer wall so that the adhesive discharge slit opens downward, and the adhesive is injected into the pilot hole. Since it is rotated while being injected, the filling action of the adhesive is promoted, and the adhesive can spread and permeate more quickly from the inside of the pilot hole to the entire floating portion.

In particular, if the configuration of claim 9 is adopted, a pair of facing adhesive outflow slits (two lines extending in parallel) serve as split grooves, which are notched and opened in the nose tube of the adhesive injection nozzle. By rotating the injection nozzle, it is possible to further promote the effects associated with the construction of claim 8, thereby obtaining excellent efficiency and workability in exterior wall repair work.

FIG. 3 is a cross-sectional schematic diagram showing the corresponding positional relationship between the adhesive injection nozzle according to the basic embodiment of the present invention and the outer wall of the building. Fig. 2 is a side view of the adhesive injection device with the adhesive injection nozzle attached; 2 is an enlarged front view showing an extracted adhesive injection nozzle of FIG. 1; FIG. 4 is a right side view of FIG. 3; FIG. FIG. 4 is a rear view of FIG. 3; FIG. 4 is a plan view of FIG. 3; 4 is a bottom view of FIG. 3; FIG. FIG. 4 is an enlarged cross-sectional view taken along line 8-8 of FIG. 3; FIG. 9 is a cross-sectional view corresponding to FIG. 8 showing a partially modified embodiment of the adhesive injection nozzle; FIG. 9 is a cross-sectional view corresponding to FIG. 8 showing another partially modified embodiment of the adhesive injection nozzle; 8 is a cross-sectional view taken along line 11-11 of FIG. 7; FIG. 8 is a cross-sectional view along line 12-12 of FIG. 7; FIG. FIG. 4 is a schematic cross-sectional view for explaining exterior wall repair work using an adhesive injection nozzle; FIG. 14 is a partially enlarged cross-sectional view taken along line 14-14 of FIG. 13, showing a downward open state of the adhesive outflow slit in the adhesive injection nozzle. FIG. 15 is a cross-sectional view showing a left lateral open state of the adhesive outflow slit subsequent to FIG. 14 ; FIG. 16 is a cross-sectional view showing a right lateral open state of the adhesive outflow slit continued from FIG. 15 ; FIG. 17 is a cross-sectional view showing an upward open state of the adhesive outflow slit following FIG. 16; FIG. 14 is a schematic cross-sectional view corresponding to FIG. 13 for explaining outer wall repair work using an adhesive injection nozzle having a nose tube shorter than that of FIG. 13; FIG. 19 is a schematic cross-sectional view for explaining outer wall repair work using an adhesive injection nozzle having a nose tube shorter than that in FIG. 18 ; FIG. 20 is a schematic cross-sectional view for explaining outer wall repair work using an adhesive injection nozzle having a nose tube shorter than that of FIG. 19 ;

Preferred embodiments of the present invention will be described in detail below based on the drawings. FIG. 1 is a cross-sectional schematic diagram showing the corresponding positional relationship between the adhesive injection nozzle (N) according to the basic embodiment and the outer wall (W) of the building. ) is a concrete frame (10), a base mortar (11) applied to the surface thereof, affixed (directly applied) mortar (12) applied to the surface of the base mortar (11), and the affixed mortar It consists of tiles, stones, and various other external wall finishing materials (13) attached to the surface of (12).

In that case, a first floating portion (gap) (S1) is provided between the concrete frame (10) of the outer wall (W) and the base mortar (11), and the base mortar (11) and the pasting mortar (12) There is a second float (gap) (S2) between the , and a third float (gap) between the applied mortar (12) and the exterior wall finishing material (tile in the example) (13). It is assumed that (S3) has occurred over time.

Then, in order to repair the outer wall (W) of the building, from the outer wall finishing material (tile) (13) to the inside of the concrete frame (10) through the pasting mortar (12) and the base mortar (11), A pre-drilled hole (G) of required depth (D) is drilled into which a preferably two-component epoxy resin adhesive (A) is to be injected.

The adhesive injection device (P) for this purpose consists of, for example, a pump body (14) as shown in FIG. and an operation lever (16) pivotally attached to the side of the pump body (14). From the adhesive injection nozzle (N) attached to , a fixed amount is discharged and pumped.

The adhesive injection nozzle (N) according to the basic embodiment of the present invention, as shown in FIGS. (17) and a rigid narrow (outer diameter: 3-5 mm) nose tube (18) made of the same stainless steel tube or other metal tube, and at the proximal end of the nozzle body tube (17) A male thread or a female thread is engraved to be a detachable joint (19), which can be attached directly to the tip of the pump body (14) of the adhesive injection device (P), or to a separate nipple or the like. Either way, it is detachably mounted for use via a union joint or other pipe joint (not shown).

On the other hand, the base end of the nose pipe (18) is welded integrally to the tip of the nozzle body pipe (17) in a concentric communication state, and the nose pipe (18) is connected to the nozzle body pipe (17) It is in a state of protruding integrally from the front. In that case, the boundary step between the thick nozzle body pipe (17) and the thin nose pipe (18) is fillet welded as a welded joint (20) to form a smoothly continuous conical surface. ing.

In the one-piece adhesive injection nozzle (N), a separate fluorine rubber An elastically deformable seal cover (21) having chemical resistance such as butyl rubber or other chemical resistance is inserted into and inserted from the tip of the nose tube (18) so that the seal cover (21) is an assembly set. When the nose tube (18) of the adhesive injection nozzle (N) in the closed state is inserted into the pilot hole (G) of the outer wall (W) as shown in FIG. The surface (21a) is pressed into the inlet (22) of the pilot hole (G) and pressed, and the inlet (22) is reliably and stably sealed. There is no risk of leakage (backflow) from the inlet (22) of the hole (G).

The length (L1) of the nozzle body tube (17) in the adhesive injection nozzle (N) is a constant dimension, for example 50 mm, while the length (L2) of the nose tube (18) is the outer wall of the building. The length of the nose tube (18) changes depending on the required depth (D) of the pilot hole (G) drilled in (W), but the nose tube (18) is inserted into the pilot hole (G) and advanced, and the pilot hole ( G) With the entrance (22) of G) sealed by the seal cover (21), the outer wall finishing material (tile) ( 13) and the adhering mortar (12) of the required length (L3) (for example, 45mm) reaching (extending) to the corresponding position facing the mutual gap (third floating portion) (S3) adhesive outflow slit ( A kerf (23) is notched open in the circumferential surface of the nose tube (18).

A line of adhesive outflow slit (23) extending by the required length (L3) has a notch opening width ( w), the nose tube (18) is formed with a substantially U-shaped cross section.

However, as is clear from FIG. 9 showing a partially modified embodiment of the adhesive injection nozzle (N) corresponding to FIG. 8, the notch opening width (w) of the adhesive outflow slit (23) is The nose tube (18) may be formed to have a substantially C-shaped cross-section with a dimension narrower than the inner diameter (d) of 18).

10 showing another modified embodiment of the adhesive injection nozzle (N) corresponding to FIG. 8, the notch opening width (w) of the adhesive outflow slit (23) A pair of slits (split grooves) (23) facing each other (two lines extending in parallel) having a dimension narrower than the inner diameter (d) of the nose tube (18) are cut into the circumferential surface of the nose tube (18). There is no harm in opening the door.

The adhesive injection nozzle (N) according to the basic embodiment of the present invention has the above configuration. Hit with a hammer or the like, diagnose the location requiring repair from the generated sound, and at the determined marker location, use a concrete drill or other drilling tool (not shown) to remove the outer wall finishing material (13) of the building from the concrete frame ( 10) Drill a pilot hole (G) to the required depth (D).

The drilling is carried out almost horizontally from the direction perpendicular to the outer wall (W), and the depth is at least 30 mm from the surface of the concrete frame (10). The hole diameter (aperture) of the pilot hole (G) is, for example, 4 to 6 mm, and the nose tube (18) of the adhesive injection nozzle (N) can be inserted smoothly. The size is set to be slightly larger than the thickness (external diameter exemplified above: 3 to 5 mm).

Then, the nose tube (18) of the adhesive injection nozzle (N) attached to the tip of the adhesive injection tool (P) as shown in FIG. 22) to seal the entrance (22) so that the adhesive (A) does not leak out by the tapered conical surface (21a) of the seal cover (21) which is pushed into the entrance (22) and elastically deformed. keep in condition.

Before the inlet portion (22) of the pilot hole (G) is sealed by the seal cover (21), the tip of the nose tube (18) is pushed into the deep portion of the pilot hole (G). It does not hit the (bottom of the hole). The length (L2) of the nose tube (18) and the depth (D) of the pilot hole (G) are set in such a dimensional relationship.

Then, under the condition that the insertion depth of the nose tube (18) is regulated, a slit (23) for adhesive outflow of a certain length (L3) opened in the circumferential surface of the nose tube (18) is provided. is a mutual gap (first floating portion) (S1) between the tip of the nose pipe (18) and the concrete frame (10) of the outer wall (W) and the base mortar (11), and the base mortar (11) Through the corresponding position facing the mutual gap (second float) (S2) with the mortar (12), the mutual gap (third float) (S3) between the exterior wall finishing material (13) and the mortar (12) to be applied. ), it reaches (extends) to the corresponding position.

Therefore, by operating the operation lever (16) of the adhesive injection device (P) held by the operator, the pump main body (14) repetitively pumps the adhesive from the adhesive storage case (15). Epoxy resin adhesive (A) is pumped to the nose tube (18) through the nozzle body tube (17) of the nozzle (N).

Moreover, by rotating the adhesive injection nozzle (N) while injecting the adhesive (A) from the nose tube (18) of the adhesive injection nozzle (N) into the pilot hole (G), the Through the adhesive outflow port (24) at the tip of the nose tube (18) and the adhesive outflow slit (23) of a certain length (L3) opened on the circumferential surface, into the pilot hole (G). Of course, the mutual gap (first floating part) (S1) between the concrete skeleton (10) and the base mortar (11) and the mutual gap (second Floating portion) (S2), and even the mutual gap (third floating portion) (S3) between the applied mortar (12) and the exterior wall finishing material (13), the adhesive (A) is, so to speak, simultaneously advanced. Either sequentially or sequentially.

In that case, in order to promote the spread and permeation of the adhesive (A) from the inside of the pilot hole (G) to the entire first to third floating portions (S1) (S2) (S3), it is preferable to inject the adhesive. As shown in FIGS. 13 and 14, the nose tube (18) of the nozzle (N) has a slit (23) for adhesive outflow, which is cut out in the circumferential surface of the nose tube (18) by a required length (L3) and is opened downward. As a state, it is inserted into the pilot hole (G) of the outer wall (W).

Then, while injecting the adhesive (A) from the nose tube (18) of the injection nozzle (N) into the pilot hole (G), the injection nozzle (N) is moved as shown in FIGS. The slit (23) of (18) is turned horizontally to either one of the left and right and then to the other, and finally turned upward as shown in FIG. 17 following FIG.

Then, the adhesive (A) flows from the tip (adhesive outlet) (24) of the nose tube (18) along the depth direction (front-rear direction) of the pilot hole (G). Adhesive of a required length (L3) that begins to accumulate in the inner depths of (G), accumulates in the direction (rear) of the shallower inlet (22), and similarly opens on the circumferential surface of the nose tube (18). From the outflow slit (23), along the circumferential direction of the pilot hole (G), as shown in FIG.

After that, the adhesive (A) accumulates on both the left and right lateral portions (both concave curved side surfaces) of the pilot hole (G) as shown in FIGS. 15 and 16 from the state of FIG. Subsequently, as shown in FIG. 17, the adhesive (A) quickly and smoothly fills the gap remaining in the upper portion (the concave curved ceiling surface) of the pilot hole (G).

However, the nose tube (18) of the adhesive injection nozzle (N) is inserted into the prepared hole (G) drilled in the outer wall (W) so that the adhesive outflow slit (cut groove) (23) faces downward. Then, if the usage is to inject the adhesive (A) into the pilot hole (G), the adhesive injection nozzle (N) during the injection is not limited to the rotation order shown in FIGS. 13 and 14, it may be rotated clockwise or counterclockwise by 360 degrees.

Also, in the partially modified embodiment of the adhesive injection nozzle (N) shown in FIG. 10, the nose tube (18) is inserted into the pilot hole (G) of the outer wall (W) by notching its circumferential surface. A pair of slits (divided grooves) (23) for adhesive discharge are inserted facing each other vertically, and while the adhesive (A) is being injected into the prepared holes (G), the slits (23) are inserted. The injection nozzle (N) may be rotated clockwise or counterclockwise by 90 degrees so that the nozzle (N) is oriented horizontally. This is because the state of filling the inside of the pilot hole (G) with the adhesive (A) can be achieved most efficiently and smoothly under its own gravity, so to speak.

In any case, during the injection of the adhesive from the nose tube (18) of the adhesive injection nozzle (N) into the prepared hole (G) of the outer wall (W), the inlet portion (22) of the prepared hole (G) ) is kept in a sealed state by an elastic sealing cover (21) attached to the injection nozzle (N), so that it is pumped by the adhesive injection device (P) into its pilot hole (G). The adhesive (A) seeks a place to escape, so to speak, from the inside of the pilot hole (G) to the first to third floats (S1) (S2) (S3) generated in communication with it, From the first float (S1) at the deep position, through the second float (S2) on the way, to the third float (S3) at the shallow position, it spreads quickly or almost simultaneously.・It will permeate and fill the entire area efficiently.

At that time, the adhesive outflow slit (23) extends from the tip of the nose tube (18) to the gap between the outer wall finishing material (tile) (13) and the mortar (12) to which it is attached (basic embodiment of FIG. 1). In the case, the notch is opened with a required length (L3) that reaches (extends) to the corresponding position facing the third floating portion (S3). Compared to the configuration in which a plurality of circular or elliptical adhesive outlets are scattered and distributed on the circumferential surface of the nozzle cylinder (nose tube), the first to third floating portions (S) (S2) ( S3) can be efficiently filled with the adhesive (A) in a short time, and there is no possibility that the slit (23) will be clogged with the adhesive (A).

Furthermore, since the adhesive outflow slit (23) has a continuous opening form as a cut groove of the required length (L3) described above on the circumferential surface of the nose tube (18), From the bottom of the hole to the gap (third floating part) (S3) between the outer wall finishing material (tile) (13) and the mortar (12) to which it is attached, several layers of floating parts are generated. Even if there is a difference or change in the place where the float occurs, the adhesive (A) is reliably spread and spread from the slit (23) to all the floats where the float occurs without being affected by these. It can be permeated, and is excellent in versatility in that sense.

Moreover, the adhesive injection nozzle (N) is a one-piece welded unit consisting of a thick nozzle body tube (17) and a thin nose tube (18) protruding forward from the tip of the nozzle body tube (17). Since it has a simple structure that does not require disassembly or assembly, the cleaning work that needs to be performed in consideration of the curing time of the two-liquid type epoxy resin adhesive (A) can be performed easily and conveniently in a short period of time. It is excellent in the effect of mass production of adhesive injection nozzle (N) and on-site workability of exterior wall repair work.

After the injection of the adhesive (A) is completed, the adhesive injection nozzle (N) is removed from the prepared hole (G) of the outer wall (W), and instead an anchor pin (N) is driven into the prepared hole (G). (not shown) has a medium-large diameter head to keep the exterior wall finishing material (tile) (13) fixed in a non-floating state.

As can be seen from the schematic cross-sectional views of FIGS. 1 and 13, the specification of the adhesive injection nozzle (N) for repairing the outer wall according to the basic embodiment of the present invention has a total of 3 nozzles in the depth direction of the pilot hole (G). Assuming that the first to third floats (S1) (S2) (S3) of the layer are generated in the outer wall (W) of the building, the prepared hole (G) is extended to the inside of the concrete frame (10). The required length (L2) of the nose tube (18), which is used by inserting a deep hole through its entrance (22), and the required length (L3) of the adhesive outflow slit (23), are also determined by the pilot hole. It is set to a relatively long dimension corresponding to the depth (D) of (G).

However, as illustrated in the cross-sectional schematic diagrams of FIGS. 18 and 19 corresponding to that FIG. A part (gap) (S1) and a second floating part (gap) (S2) between the exterior wall finishing material (tile) (13) and the mortar (12) to which it is applied are generated in a total of two layers. If it is assumed that it is, as shown in FIG. 18, the pilot hole (G) is penetrated only by the pasting mortar (12) from the outer wall finishing material (13) and drilled deeply to the inside of the concrete frame (10). Alternatively, as shown in FIG. 19, the prepared hole (G) is similarly penetrated from the exterior wall finishing material (13) by only the pasted mortar (12), and a recess (25) that is slightly depressed in the surface of the concrete skeleton (10). Drill as shallow as possible.

Also, as illustrated in the schematic cross-sectional view of FIG. 20 which also corresponds to FIG. 13, a single layer of Only the first floating portion (gap) (S1) is generated, and the space between the concrete frame (10) and the base mortar (11) as shown in FIG. ) and between the concrete frame (10) and the applied mortar (12) as shown in FIGS. In addition, shallow holes are drilled from the exterior finishing material (tile) (13) to the inside of the pasting (direct attachment) mortar (12).

The specification of the adhesive injection nozzle (N) used in the exterior wall repair work shown in FIGS. (G), and with the attached seal cover (21) sealing the entrance (22) of the pilot hole (G), the tip of the nose tube (18) to the outer wall Adhesive of the required length (L3) reaching (extending) to corresponding positions facing the mutual gaps (first and second floats) (S1) (S2) between the finishing material (13) and the mortar (12) to which it is applied. The outflow slit (23) may be formed by notching the circumferential surface of the nose tube (18).

Then, it can be used in the same manner as the adhesive injection nozzle (N) of the basic embodiment to achieve the same effect. 18 to 20 are only filled with reference numerals corresponding to those in FIG. 13, and a detailed description of the configuration and usage of the adhesive injection nozzle (N) is omitted.

Even in the adhesive injection nozzle (N) shown in FIGS. 18 to 20, the nose tube (18) is connected to the pilot hole (G) of the outer wall (W), and the peripheral surface of the nose tube (18) is notched and opened for the adhesive to flow out. The slit (23) is inserted downward, and in this state, the adhesive injection nozzle (N) is rotated while injecting the adhesive (A) into the pilot hole (G). The partially modified embodiment of the adhesive injection nozzle (N) shown in FIGS. 9 and 10 can also be applied as it is to the adhesive injection nozzle (N) having the specifications shown in FIGS.

(10) Concrete frame (11) Base mortar (12) Pasting mortar (13) Exterior wall finishing material (tile)
(14) Pump main body (15) Adhesive storage case (16) Operation lever (17) Nozzle body pipe (18) Nose pipe (19) Joint (20) ... Welded joint (21) ... Seal cover (21a) ... Tapered conical surface (22) ... Entrance of pilot hole (23) ... Slit for outflow of adhesive (A) )・・・・Adhesive (D)・・・・Depth of prepared hole (G)・・・・Prepared hole (N)・・・・Adhesive injection nozzle (P)・・・・Adhesive injection Instrument (W)・・・Outer wall (d)・・・Inner diameter of nose pipe (w)・・・Notch opening width (L1)・・・Length of nozzle body pipe (L2)・・・Nose Length of tube (L3) ... Notch length of slit (S1) ... First float (S2) ... Second float (S3) ... Third float

Claims (9)

From the outer wall finishing material to the inside of the pasted mortar, or through the pasted mortar to the surface of the concrete frame, a pilot hole of the required depth, or from the outer wall finishing material to the pasted mortar only or through the pasted mortar and the base mortar. An adhesive injection nozzle for repairing an outer wall of a building for injecting an epoxy resin adhesive into a pilot hole of a required depth drilled to the inside of a concrete frame,
a rigid thick nozzle body tube with a removable fitting for a separate adhesive injection device at its proximal end;
a rigid thin nose tube integrally protruding forward from the tip of the nozzle body tube;
an elastic seal cover inserted from the front into the boundary between the nose tube and the nozzle body tube so as to be removable and insertable, and capable of sealing the inlet of the pilot hole;
A corresponding position facing the mutual gap between the outer wall finishing material and the mortar to which the nose pipe is attached from the tip of the nose pipe in a state where the nose pipe is inserted into the pilot hole and the inlet of the pilot hole is sealed with the seal cover. An adhesive injection nozzle for repairing an outer wall of a building, characterized in that an adhesive outflow slit of a required length reaching up to 100 mm is opened in the circumferential surface of the nose tube. The nozzle body pipe made of metal and the nose pipe made of the same metal are welded and integrated in a state of concentric communication,
2. A building according to claim 1, characterized in that the tapered conical surface of the seal cover made of chemical-resistant rubber is pushed into the entrance of the pilot hole and elastically pressed to keep the entrance sealed. Adhesive injection nozzle for exterior wall repair. 2. The adhesive injection nozzle for repairing exterior walls of buildings according to claim 1, wherein the notch opening width of the adhesive outflow slit is the same size as the inner diameter of the nose tube, and the nose tube is formed to have a substantially U-shaped cross section. . 2. The adhesive for repairing external walls of buildings according to claim 1, wherein the notch opening width of the adhesive outflow slit is narrower than the inner diameter of the nose tube, and the nose tube is formed to have a substantially C-shaped cross section. injection nozzle. 2. The method according to claim 1, wherein the opening width of the adhesive outflow slit is narrower than the inner diameter of the nose tube, and a pair of the slits facing each other are opened on the circumferential surface of the nose tube. Adhesive injection nozzle for repairing exterior walls of buildings. Pre-drilled holes of the required depth drilled from the exterior wall finishing material of the building to the inside of the mortar, or through the mortar to the surface of the concrete frame, or similarly from the exterior wall finishing material to the inside of the concrete frame through the mortar. The nose pipe of the adhesive injection nozzle for exterior wall repair described in claim 1 is inserted into the drilled pilot hole of a required depth, and the inlet of the pilot hole is sealed with a seal cover,
By rotating the injection nozzle while injecting the epoxy resin adhesive into the pilot hole, the tip of the nose tube and the slit for the adhesive outflow not only the inside of the pilot hole but also the outer wall finishing material and its part. A building characterized by filling with the above-mentioned adhesive only the gaps between the mortar to be applied, or the gaps between the exterior wall finishing materials and the mortar to which the mortar is applied, and the gaps between the mortar to be applied and the concrete frame. How to use the adhesive injection nozzle for exterior wall repair. The nose pipe of the adhesive injection nozzle for exterior wall repair described in claim 1 is inserted into a pre-drilled hole of a required depth drilled from the outer wall finishing material of the building through the pasting mortar and the base mortar to the inside of the concrete frame, Under the condition that the inlet of the pilot hole is sealed with a seal cover,
By rotating the injection nozzle while injecting the epoxy resin adhesive into the pilot hole, the tip of the nose pipe and the slit for adhesive outflow not only the inside of the pilot hole, but also the concrete frame and the underlying mortar. and the gaps between the base mortar and the pasting mortar, and the gaps between the pasting mortar and the exterior wall finishing material are also filled with the above-mentioned adhesive. Usage of glue injection nozzle. The nose tube of the adhesive injection nozzle is inserted into the pilot hole so that the adhesive outflow slit formed in the circumferential surface of the nose tube faces downward, and while injecting the adhesive into the pilot hole,
rotating the injection nozzle 360 degrees clockwise or counterclockwise;
8. The injection nozzle according to claim 6 or 7, characterized in that said injection nozzle is rotated in such a sequence that the adhesive outflow slit of said nose tube is oriented laterally to one of the left and right sides and then to the other, and finally oriented upward. A method of using an adhesive injection nozzle for exterior wall repair in a building. The nose tube of the adhesive injection nozzle is inserted into the pilot hole so that the pair of slits for the adhesive outflow, which are cut and opened on the circumferential surface of the nose tube, face each other vertically, and the adhesive is inserted into the pilot hole. While injecting
8. The injection nozzle for repairing an outer wall of a building according to claim 6 or 7, wherein the injection nozzle is rotated clockwise or counterclockwise by 90 degrees so that the adhesive outflow slit of the nose tube is oriented laterally. Usage of glue injection nozzle.