JPH08183U - Anchor pins for repairing building exterior walls - Google Patents

Abstract

(57) [Summary] [Purpose] Not only fulfilling the function of guiding the injection of the adhesive, but also mechanically holding down the outer wall of the mortar so that the entrapment phenomenon can be reliably prevented. [Structure] A receiving port cylinder (13) of an adhesive injection nozzle (15) is made larger in diameter and perpendicular (θ) than the body surface of the anchor body (11) from the base end of the anchor body (11). By overhanging, the nozzle receiving port cylinder (13)
The boundary step between the anchor body (11) and the adhesive (B)
Of the anchor body (11) and the anchor body (11) at the midway portion of the body of the anchor body (11). The protrusion (19), which serves as a fulcrum for the action of 11) to spread from the tip, was installed in an inwardly protruding state.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of an anchor pin used for repairing an outer wall of a mortar to prevent the outer wall of the mortar from rising or peeling off from the concrete skeleton of the building.

[0002]

[Prior art]

 Conventionally, a method of repairing an outer wall that prevents a mortar outer wall that has been wet-processed, such as tiled or bricked, from rising or peeling off from the concrete skeleton of the building, see, for example, Japanese Utility Model Publication No. 60-123415. A hollow cylindrical anchor pin is used.

In use, the sleeve body (1) of the anchor pin is fixed by driving it into the prepared hole (22) drilled from the mortar outer wall (20) toward the concrete skeleton (21), and then fixed. The adhesive is injected into the hollow interior (2) of (1) by the adhesive injection nozzle (24), and the adhesive is injected under pressure from the body slit (5) of the sleeve body (1) to the mortar outer wall (20). And the concrete frame (21) is extended to the mutual gap (23).

[0004]

[Problems to be solved by the device]

 However, in the anchor pin of the above-mentioned known device, the base end portion of the sleeve body (1) is shaped as a taper portion (4) having a large diameter toward the end due to its structure, and the taper portion (4) is formed. Not only is the axial end slit (6) provided on the shaft, but the inner taper (4a) for the spring action is also scraped off, and the opening edge is thinned, so There are problems.

That is, firstly, in the case of the above-mentioned known device, "the taper portion (4) which is the base end portion of the sleeve main body has a portion which does not include the end slit (6). The part is in close contact with the prepared hole (22) and a sealing action is performed between the sleeve body (1) and the prepared hole (22) to prevent leakage of the poured adhesive. " However, the portion without the end slits (6) is only 1 mm, and the taper portion (4) is also sized to have an angle of only 15 degrees.

In this case, since the prepared hole (22) is embedded in the sleeve body (1) and is slightly larger than the outer diameter of the sleeve body (1) and has a large opening diameter, it is punched in a straight form, so that the injection hole is filled. The adhesive that has received the internal pressure of the above flows back along the outer peripheral surface of the sleeve body (1) and inevitably overflows to the outside.

Particularly, in the above-mentioned known device, when the taper part (4) is driven into the prepared hole (22), if the sleeve body (1) is strongly hit, the mortar is easily damaged. It is necessary to be very careful when embedding the taper part after inserting it into the hole. ”As described in the description, the opening edge of the prepared hole (22) is deformed and damaged. For ease of explanation, with the sealing action length of 1 mm and the taper angle of 15 degrees, it is impossible to block the adhesive that flows back from the hollow inside (2) of the sleeve body (1) along the outer peripheral surface and overflows to the outside. However, it is practically impossible, and since the taper portion (4) is provided with the end slits (6), the adhesive which has received the internal pressure from the hollow inside (2) of the sleeve body (1). Will overflow.

In order to prevent the overflow, it is necessary to perform a driving operation and an injection operation with special care, and to set the injection pressure of the adhesive to a low pressure. If chips remain due to imperfect cleaning of (22), the spreading area of the adhesive will be narrowed, and as a result, the binding strength of the outer wall (20) of the mortar with respect to the concrete frame (21) will be increased. You can't get it either. It is also necessary to maximize the number of anchor pins driven per unit area.

Secondly, according to the above-mentioned known device, "when the taper part (4) is driven into the mortar (20), it is firmly supported by the spring action with the prepared hole (22). , The pressing mechanism for preventing the mortar from floating due to the adhesive is unnecessary. ”As a prerequisite for this, the opening edge of the taper part (4) in the sleeve body (1) is more than the body part. Is thinned, and the inner side surface thereof is shaved to form an inner taper (4a), and an end slit (6) is provided to the taper portion (4).

However, the fact that the spring action supports the outer wall (20) of the mortar means that the above caution is insufficient when the sleeve body (1) is driven by the driving rod (9) of FIG. 6 (B). If the taper portion (4) of the sleeve main body (1) is strongly tapped due to the taper surface of the driving rod (9) due to the work of (1), the taper portion (4) is expanded and deformed and tapped. A spring back will be created later, and a void will be formed between the mortar outer wall (20) and the mortar outer wall (20).

In this respect, the taper portion (4) acts as a spring, and since the diameter is only 15 degrees which increases toward the end edge of the sleeve body (1), it is known. Despite the ideal explanation of the invention, it is practically impossible to prevent the bending deformation (entrainment phenomenon) such as the floating and expansion of the mortar outer wall (20) by the taper part (4). Depends on the attention of the operator.

If the sleeve body (1) is driven into the prepared hole (22) too strongly, or if the pressure for injecting the adhesive is too high, the mortar outer wall (20) rises and expands. It ends up.

The same applies to the anchor pin (11) described in JP-A-60-261868. This is because the anchor pin (11) does not even have the taper portion (4) of 15 degrees in the above-mentioned known device, and is merely a hollow cylinder type as a whole.

In short, the above-mentioned known invention and the anchor pin of the known invention only fulfill the function of guiding the injection of the adhesive, and mechanically hold down the outer wall of the mortar to achieve the effect of preventing the entrapment phenomenon. It is a configuration that cannot be done.

Furthermore, in the structure of the anchor pin described in the above-mentioned known device, the inner peripheral surface of the sleeve body (1) except the tip head portion (3) of the sleeve main body (3) is an overall stepless straight plate. It has a form. Therefore, even if the body slit (5) is formed in the provisional sleeve body (1), it is difficult for the sleeve body (1) to properly expand from the tip head portion (3), and the body slit (5) of There is a problem that it is easy for the cut end point to be expanded or deformed illegally or to Atsundam.

Further, since the back of the expansion plug (8) inserted and set in the hollow inside of the sleeve body (1) is fully opened, the packing of the anchor pin when the expansion plug (8) is inserted and set is set. -During transportation and handling at the work site, the expansion plug (8) will fall out from the base end direction where the taper part (4) expands, which is very inconvenient. It is necessary to carry and handle the sleeve head (1) with the tip head (3) always facing downward.

Even in the anchor pin of the above-mentioned known invention, the inner peripheral surface of the metal hollow body (11) has a simple straight shape over the entire length, and the pin (16) inserted into the anchor pin is constrained behind the pin (16). Since there is nothing, there is no problem in causing the same problem as above.

[0018]

[Means for Solving the Problems]

 The present invention intends to improve such a problem, and because of its structure, a hollow anchor main body of a certain length is used for driving from the outer wall of the mortar to the concrete frame, and this is forcibly expanded from the tip. It is equipped with a plug inserted into the hollow inside of the anchor body in order to deform and bite it into the driving hole, and to spread the adhesive from the tip of the anchor body and distribute the adhesive on the body surface of the anchor body. When the fixed split groove is driven into the concrete skeleton and fixed, a certain length of the opening will inevitably face the mutual gap between the outer wall of the mortar and the concrete skeleton. In the anchor pin for repairing the outer wall of the formed building,

In the middle part of the body surface of the anchor body interposed within the opening length range of the above-mentioned split groove, for preventing the plug from coming out toward the base end direction of the anchor body and expanding from the tip part of the anchor body. Install the protrusion that serves as the fulcrum in an inwardly protruding state, and from the base end of the anchor body above, set the receiving port of the adhesive injection nozzle to a diameter larger than the body of the anchor body. When it is overhanged, the boundary step between the nozzle receiving port cylinder and the anchor body that is overhanging is used as a stop shoulder surface to prevent the above-mentioned adhesive backflow and to prevent the outer wall of the mortar from rising up. It is characterized by intersecting the line at a right angle.

[0020]

[Action]

 According to the above configuration of the present invention, the receiving port cylinder of the adhesive injection nozzle is extended from the base end portion of the anchor main body to a diameter larger than the trunk surface of the anchor main body, so that the extended nozzle receiving nozzle is received. The boundary step between the mouth tube and the anchor body is set as a restraining shoulder surface that both prevents adhesive backflow and prevents the outer wall of the mortar from rising, and is set at a crossing angle approximately perpendicular to the longitudinal centerline of the anchor body. Therefore, even if the adhesive is subjected to internal pressure at the time of injection, the adhesive does not flow backward so as to escape to the outside along the mutual gap between the body surface of the anchor body and the driving hole. There is no. As a result, there is no need to reduce the injection pressure of the adhesive, the spread area of the adhesive can be expanded as much as possible, and a high-strength bonding force of the mortar outer wall to the concrete skeleton can be obtained.

Further, at the midway portion of the body surface of the anchor body interposed within the opening length range of the above-mentioned split groove, for preventing the plug from coming out toward the base end direction and expanding from the tip end portion of the anchor body. Since the protrusion that serves as a fulcrum is installed in an inwardly protruding state, there is no risk of the plug falling out of the anchor body during packaging and transportation of the anchor pin, or handling and use at the work site. It also helps improve work efficiency.

Further, when the anchor body is bite and fixed in the driving hole by tapping the plug, the anchor body surely expands and deforms stably from the tip end with the position where the projection is provided as the fulcrum, and the split groove is formed. It is also possible to prevent the possibility of illegal or at random expansion expansion from the end point of the cut.

[0023]

【Example】

 1 to 9 show a basic embodiment of an anchor pin (P) according to the present invention and a mortar outer wall (M) repair work process using the same. The anchor pin (P) has a hollow anchor body (11) made of stainless steel or other non-rusting metal, and a frusto-conical or bullet shape of a special steel ingot inserted into the hollow anchor body (11). It is composed of a plug (12) and penetrates through a mortar outer wall (M) of a required thickness (W), as will be described later, and is used by being driven into the concrete frame (C) of the building.

The anchor body (11) has a constant thickness (D1) (for example, about 6 mm) and a constant thickness (T) formed by plastic working of a coiled metal material, preferably cold forging. (Eg, about 0.75 mm) and a fixed length (L1) (eg, about 57 mm) that can reach the required depth of the concrete skeleton (C) from the surface of the mortar outer wall (M) There is.

Since the thickness (W) of the outer wall (M) of the mortar actually changes, the length (L1) of the anchor body (11) that penetrates the outer wall (M) is also created as various types according to the change. The prepared anchor pin (P) will be selectively used.

(13) Simultaneously with the cold forging of the anchor body (11), the thickness (D2) -about 9 mm and the length (L2) -about 2 mm from the base end portion of the body surface of the anchor body (11) It is a large-diameter nozzle receiving port that is continuously and integrally projected toward the side, and the boundary step between this and the anchor body (11) is the longitudinal centerline (YY) of the anchor body (11). It is formed as a blocking shoulder surface (14) that intersects at a substantially right angle (θ).

That is, when the adhesive (B) is injected into the hollow inside of the anchor body (11) by the adhesive injection nozzle (grease gun) (15) described later, the adhesive ( The blocking shoulder surface (14) prevents B) from flowing backward along the mutual gap (G) between the body surface of the anchor body (11) and the driving hole (16), and the adhesive injected in the same manner. Even when the outer wall (M) of the mortar floats up from the concrete skeleton (C) and is flexibly deformed into an expanded state (so-called entrapment phenomenon) under the internal pressure of the agent (B), the restraining shoulder surface (14) mechanically It is designed so that it can be held down.

As is apparent from FIG. 4, the opening edge portion of the nozzle receiving tube (13) is shaped as a conical sloped surface (17) having an outer diameter, and the nozzle for injection of adhesive (15) and the nozzle for injection of the adhesive (15) are formed. It is also possible to smoothly and correctly accept the connection adapter.

The hollow inside of the anchor body (11) is perforated by a drilling process following the cold forging into a stepped shape having a small tip diameter as shown in FIG. ), The plug (12) is locked to the anchor body (11) so that it does not slip off toward the front end direction.

Reference numeral (19) is also a projection for preventing the plug (12) from slipping out in the opposite base end direction, and by the so-called kneading up of the anchor body (11) after the above-mentioned perforation processing, the plug is inserted inside the trunk surface. It is installed in an upright position.

Moreover, as suggested by FIG. 4, the projections (19) are projected inward from the outside of the body surface while keeping the thickness (T) of the anchor body (11) constant. Since it is in the open state, the anchor body (11) can be accurately expanded and deformed without variation from the tip end, with the application position of the protrusion (19) as the fulcrum of action.

However, in the illustrated embodiment, the protrusion (19) is in the state of one continuous ring-shaped protrusion, but as long as the above-mentioned function can be achieved, the anchor body can be a plurality of scattered dots. It does not matter even if it protrudes inward from the body surface of (11).

Reference numeral (20) is a split groove that is provided in parallel from the tip of the anchor body (11) along the longitudinal direction of the body surface by continuously milling the anchor body (11). ) For spreading the adhesive from the tip portion and for circulating the adhesive (B) from the hollow inside of the anchor body (11) to the surroundings.

In the sense that the adhesive (B) functions to flow, the split groove (20) is a mutual gap between the mortar outer wall (M) and the concrete skeleton (C) (floating margin of the mortar outer wall) (S ), The apertures are arranged as long as possible as a constant length (L3) that is always encountered.

In this regard, in the illustrated embodiment, in order to prevent the strength of the anchor body (11) from decreasing due to the fixed thickness (D1) of the anchor body (11), the split groove (20) is cut into a single letter shape. However, it is of course possible to cut it into a cross shape. In any case, the protrusion (19) facing inward from the middle part of the trunk surface of the anchor body (11) is a split groove (20) opened by a certain length (L3), so that the opening is such that it interferes. Intervenes within the length range.

Next, FIGS. 10 to 14 show a modified embodiment of the anchor pin (P) according to the present invention and a mortar outer wall (M) repair work process by using the anchor pin (P). The nozzle receiving port cylinder (13) of (11) is projected into a cylindrical shape deeper than that of the above-mentioned basic embodiment (for example, a length of about 7 mm), and an adhesive injection nozzle (15) is provided on the inner peripheral surface thereof. ) Is engraved with a female screw (21) that is detachably screwed. Therefore, the adhesive injection nozzle (15) or its connection adapter (not shown) can be more stably connected and used, and the cosmetic plug (22) described later can be filled stably and firmly.

Further, the tip of the anchor body (11) is plastically worked as a tapered conical sloped surface (23) instead of the stepped portion (18) of the above-described basic embodiment, so that the plug (12) has the anchor. It prevents the main body (11) from falling off from the front end direction. Since the other configurations of the modified embodiment are substantially the same as those of the basic embodiment, only the corresponding reference numerals to those of FIGS. Omit the light.

The repair work process of the outer wall (M) of the mortar will be described based on the basic embodiment of the present invention as follows.

That is, when carrying out the repair work, first, for each of the floating portions previously marked on the mortar outer wall (M) of the building, a hole such as a two-stage bit as shown in FIG. 5 is formed. A tool (24) is used to open an anchor pin driving hole (16) having a constant depth from the outer wall of the mortar (M) to the concrete skeleton (C). The drive hole (16) corresponds to the anchor body (11) of the anchor pin (P) and is therefore provided with a step (25) which engages with the restraining shoulder surface (14) as suggested in FIG. It has a stepped opening.

Then, as shown in FIG. 7, the anchor body (11) of the anchor pin (P) is driven into the driving hole (16), and the plug () inserted and set in the anchor body (11) is inserted. 12) is hammered with a hammering tool (26) such as a hammer or a hammer.

In this case, the plug (12) is kept in the hollow inside of the anchor body (11) in a sealed state that does not fall off from either the distal direction or the proximal direction, which is very convenient for handling. Therefore, it is useful for improving the efficiency of the tapping work.

When the plug (12) is tapped, the anchor body (11) expands and deforms reliably and uniformly from the tip end of the anchor body (11) with the position where the projection (19) is applied as the fulcrum of operation, and the concrete frame ( While it will be fixed irremovably in the driving hole (16) of C), the nozzle receiving cylinder (13) at the base end of the anchor body (11) also has its stopping shoulder surface (14). Thus, the mutual gap (G) between the body surface of the anchor body (11) and the driving hole (16) is blocked.

Further, the nozzle receiving port cylinder (13) is exposed from the surface of the mortar outer wall (M), and is directed toward the mutual gap (S) between the mortar outer wall (M) and the concrete skeleton (C). The split groove (20) of the anchor body (11) is also located at the open position.

Then, as is clear from FIG. 8, the adhesive injection nozzle (15) is directly inserted into the nozzle receiving tube (13) of the anchor body (11) or a connection adapter (not shown). The adhesive (B) such as a wet-curing type epoxy resin or polymer cement slurry is injected into the hollow inside of the anchor body (11) in a pressurized state, and is then filled. To do.

Then, as shown in FIGS. 8 and 9, the injected adhesive (B) passes through the split groove (20) opening in the body surface of the anchor body (11), and the body surface and the driving hole. While flowing out into the mutual gap (G) with (16), it further spreads and permeates into the mutual gap (S) between the mortar outer wall (M) and the concrete skeleton (C).

As a result, the anchor pin (P) previously fixed to the concrete skeleton (C) is more strongly fixed by the adhesive (B), and the anchor pin (P) is bonded to such anchor pin (P). By the synergistic action with the agent (B), the outer wall (M) of the mortar is not strongly lifted or peeled off from the concrete skeleton (C), and is strongly and integrally bonded to the concrete skeleton (C). .

In that case, since the adhesive (B) is injected from the nozzle (15) into the inside of the inside of the anchor body (11) under pressure, the adhesive (B) receiving the internal pressure thereof Tries to flow backward to the surface of the mortar outer wall (M) along the mutual gap (G) between the body surface of the anchor body (11) and the above-mentioned driving hole (16), and also floats up the mortar outer wall (M) and expands. The acting force acts to bend and deform the state.

However, in the anchor pin (P) of the present invention, the nozzle receiving port cylinder (13) is projected at the base end portion of the anchor body (11), and the nozzle receiving port cylinder (13) having a large diameter is provided. The boundary step between the anchor body (11) and the anchor body (11) serves as a restraining shoulder surface (14) that serves to prevent backflow of the adhesive (B) and to prevent the outer surface of the mortar (M) from rising. Since it is crossed at a right angle (θ) to the longitudinal centerline (Y-Y), its restraining shoulder surface (14) can correctly counteract the above-mentioned acting force, and the anchor pin (P) itself is made of a metal material that does not rust. In addition to the above, there is no concern that the surface of the outer wall of the mortar (M) will be unsightly and contaminated by the overflowing adhesive (B), and the phenomenon of flexing deformation of the outer wall of the mortar (M) will be described above. Surface ( 4) can be stopped reliably pressed by is that obtained excellent durability strength of the mortar external wall (M).

Further, since the outer wall (M) of the mortar does not flexibly deform (raise phenomenon) into a floating and expanded state, an adhesive (B) such as a polymer cement slurry which requires a relatively high injection pressure is also used. It can be used without restriction, and there is no need to worry about adjusting the injection pressure to a low level, and the spread area (Z) of the adhesive (B) can be expanded under a constantly high injection pressure. From that point of view, it is possible to obtain high strength durability of the outer wall of the mortar (M), and further, in terms of the opening diameter of the driving hole (16) and the driving of the anchor pin (P) into the driving hole (16), Even if you do not need to pay attention to the above, you can carry out the construction lightly and efficiently.

After injecting the adhesive (B), the nozzle (15) is pulled out from the nozzle receiving port cylinder (13) of the anchor body (11), and the nozzle receiving port cylinder (13) is as shown in FIG. In addition, a putty such as epoxy mortar or the like having affinity with the adhesive (B) or a decorative plug (22) is used to finish in a beautiful closed state.

The work order of the outer wall repair work is exactly the same in the modified embodiment of FIGS. 10 to 14, but as in the modified embodiment, the nozzle receiving tube (13) is extended and formed, and If a female screw (21) for fastening with the nozzle (15) is engraved on its inner peripheral surface, the adhesive injection nozzle (15) can be used in a stable and connected manner so that the adhesive does not overflow. It can be said that it is possible to do so, and it can be said that it is more beneficial in that the makeup plug (22) is also kept in a firmly filled state.

[0052]

[Effect of device]

 As described above, in the anchor pin (P) for repairing the outer wall of the building according to the present invention, the hollow anchor main body (11) having a fixed length (L1) used by being driven from the mortar outer wall (M) to the concrete frame (C) is used. ), And a plug (12) inserted into the hollow inside of the anchor body (11) so as to forcibly expand and deform it from the tip and bite and fix it in the driving hole (16). When a split groove (20) for expanding from the tip portion and for distributing the adhesive (B) is driven into the body surface of the anchor body (11) and fixed to the concrete skeleton (C). , Repairing the outer wall of a building with a certain length (L3) that a part of the opening is always facing the mutual gap (S) between the mortar outer wall (M) and the concrete skeleton (C) Anchor pin (P)

At the midway portion of the body surface of the anchor body (11) interposed within the opening length range of the split groove (20), the plug (12) is prevented from coming off toward the base end direction of the anchor body (11). A protrusion (19) which serves as a fulcrum for expanding and expanding from the tip of the anchor body (11) is installed in an inwardly protruding state, and is bonded from the base end of the anchor body (11). By projecting the receiving port cylinder (13) of the agent injection nozzle (15) so as to have a diameter larger than the trunk surface of the anchor body (11), the protruding nozzle receiving port cylinder (13) and the anchor The boundary step with the main body (11) is used as a restraining shoulder surface (14) for preventing the backflow of the adhesive (B) and for preventing the outer surface of the mortar (M) from rising, and the length of the anchor main body (11) is increased. Almost right angle (θ) to the center line (Y-Y) Because you have to cross, there is an effect that can entirely improve the prior art problems mentioned at the beginning.

That is, according to the configuration of the present invention, the diameter of the anchor body (11) is increased by forming the receiving port cylinder (13) of the adhesive injection nozzle (15) at the base end of the anchor body (11). The boundary step between the large nozzle receiving port cylinder (13) and the anchor body (11) serves as a restraining shoulder surface (14) that helps prevent backflow of the adhesive (B) and lifting of the mortar outer wall (M). Since the crossing angle is set at a right angle (θ) with the longitudinal center line (Y-Y) of the body (11), the adhesive injected into the hollow inside of the anchor body (11) by the nozzle (15). When the agent (B) receives the internal pressure and tries to flow back to the surface of the mortar outer wall (M) along the outer peripheral surface of the anchor body (11) in an overflowing manner, the inner pressure of the mortar outer wall (M) also causes Concrete frame ( Lift even if an attempt is deformed to the expansion state from), the stop shoulder surface (1 4) against the such action forces can and this stop reliably pressing the backflow or flexural deformation.

The anchor pin (P) of the present invention not only functions as a passage for injecting and guiding the adhesive (B), but also mechanically holds down the outer wall (M) of the mortar to prevent the entrapment phenomenon. It means that. As a result, as in the known device described at the beginning, it is not necessary to adjust the injection pressure of the adhesive (B) to be low, and an adhesive (such as polymer cement slurry) requiring a relatively high injection pressure ( Even in B), it can be used without restriction, and the spread area (Z) of the adhesive (B) can be expanded under the high injection pressure.

The fact that the spreading area (Z) with respect to the injection unit amount of the adhesive (B) can be expanded means that the unit grid is rough and the required number of anchor pins (P) to be used for driving the floating portion is small as a whole. Means that is enough. Nevertheless, there is an effect that the binding force of the mortar outer wall (M) to the concrete skeleton (C) can be remarkably increased, and the mortar outer wall (M) has excellent durability strength and workability on site.

Further, in the present invention, the protrusion (19) serving as a fulcrum for preventing the plug (12) from coming out toward the base end of the anchor body (11) and expanding from the tip of the anchor body (11) is provided. , The plug (12) is installed in an inwardly protruding state at a midway portion of the body surface of the anchor body (11) interposed within the opening length range of the split groove (20). It is possible to maintain the sealed state that it does not fall off not only from the tip direction of 11) but also from the base direction, which is extremely convenient for packing and transporting the anchor pin (P) and handling and using it at the work site. Excellent workability.

Moreover, the protrusion (19) is installed in an inwardly protruding state at a midway portion of the body surface of the anchor body (11) interposed within the opening length range of the split groove (20). Therefore, when the plug (12) is tapped, the anchor body (11) stably expands and deforms from the tip of the anchor (11) with the position where the projection (19) is applied as the fulcrum of operation, and the expansion operation is fraudulent or uneven. There is also the effect of eliminating.

In this respect, even if the protrusion (19) is installed outside the opening length range of the split groove (20) or protrudes inward from the anchor body (11), only the protrusion corresponds to the anchor body. If the body surface of (11) is partially thickened, it is possible to prevent the plug (12) from slipping out toward the base end direction, which is effective as a fulcrum of the expansion action. Does not work

Furthermore, the sleeve body (1) of the known invention and the metal hollow body (11) of the known invention mentioned at the beginning have a straight shape whose inner peripheral surface extends over the entire length. It is impossible to achieve the effect.

Further, according to the second aspect of the present invention, the adhesive injection nozzle (15) can be more smoothly inserted into the nozzle receiving port cylinder (13) of the anchor body (11). There is an effect that can be used.

In particular, if the structure of claim 3 is adopted, the nozzle (15) is internally threaded (21) when the adhesive injection nozzle (15) is inserted into the nozzle receiving port cylinder (13). The adhesive (B) can be injected more stably by removably screw-fastening with and the adhesive (B) can be prevented from flowing back or overflowing from the hollow inside of the anchor body (11). Besides, there is an effect that the fixing strength of the decorative plug (22) filled in the nozzle receiving port cylinder (13) can be further enhanced under a large frictional force.

[Brief description of drawings]

FIG. 1 is a perspective view showing a basic embodiment of an anchor pin according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a front view of FIG. 1;

FIG. 4 is a sectional view taken along line 4-4 of FIG.

FIG. 5 is a side sectional view showing a repair operation process of a mortar outer wall using an anchor pin.

FIG. 6 is a side cross-sectional view showing a repair work process subsequent to FIG.

FIG. 7 is a side sectional view showing a repair operation process following FIG. 6;

FIG. 8 is a side sectional view showing a repair work step following FIG. 7;

FIG. 9 is a side sectional view showing a completed state of the repair work process following FIG. 8;

FIG. 10 is a side view showing a modified embodiment of the present invention.

11 is a front view of FIG.

12 is a sectional view taken along line 12-12 of FIG.

FIG. 13 is a side sectional view showing a repair process of the mortar outer wall using the anchor pin of FIG. 10;

FIG. 14 is a side cross-sectional view showing a completed state of the repair work process following FIG. 13;

[Explanation of symbols]

 (11) ・ Anchor body (12) ・ Plug (13) ・ Nozzle receiving port tube (15) ・ Nozzle for injecting adhesive (16) ・ Punch hole (14) ・ Shoulder shoulder (17) ・ Conical slope (19) ) ・ Protrusion (20) ・ Split groove (21) ・ Female screw (22) ・ Faucet (C) ・ Concrete body (M) ・ Mortar outer wall (P) ・ Anchor pin (D1) ・ Constant thickness (D2) ・Constant thickness (L1), constant length (L2), constant length (L3), constant length (Y-Y), longitudinal center line (θ), right angle (crossing angle)

Claims (3)

[Scope of utility model registration request] 1. A fixed length (L1) hollow anchor body (11) to be used for driving from a mortar outer wall (M) into a concrete frame (C), and forcibly expanding and deforming the hollow anchor body (11) from its tip. A plug (12) inserted and set in the hollow interior of the anchor body (11) so as to bite and fix the hole in the hole (16); Split grooves (20) for opening and distribution of adhesive (B)
Is fixed to the concrete skeleton (C) and fixed, the opening part of the mortar always faces the mutual gap (S) between the mortar outer wall (M) and the concrete skeleton (C). In an anchor pin (P) for repairing an outer wall of a building having an opening formed by a length (L3), the anchor is provided at a midway portion of the trunk surface of the anchor body (11) which is present within the opening length range of the split groove (20). Body (1
A protrusion (19) for preventing the plug (12) from coming off in the proximal direction of 1) and serving as a fulcrum for expanding from the tip of the anchor body (11) is installed in an inwardly protruding state. By extending the receiving port cylinder (13) of the adhesive injection nozzle (15) from the base end of the anchor body (11) to a diameter larger than the trunk surface of the anchor body (11),
The boundary shoulder portion between the protruding nozzle receiving port cylinder (13) and the anchor body (11) serves to prevent backflow of the adhesive (B) and prevent lifting of the outer wall (M) of the mortar (14). ) As its anchor body (11)
An anchor pin for repairing an outer wall of a building, which is crossed at a right angle (θ) with a longitudinal center line (Y-Y). 2. An anchor pin for repairing an outer wall of a building according to claim 1, wherein an opening edge portion of the nozzle receiving port cylinder (13) is shaped as a conical sloped surface (17) that spreads outward. 3. An inner peripheral surface of a nozzle receiving cylinder (13),
2. A female screw (21) which is detachably screwed and fastened to an adhesive injection nozzle (15).
Anchor pins for exterior wall repair of the building described.