JPH08232935A - Method for executing bracket to be installed on rear surface and bracket to be installed on rear surface - Google Patents

Abstract

PURPOSE: To provide a method for executing a bracket to be installed on the rear surface and its bracket where the load capacity can be remarkably improved and no loosening is realized even when the repetitive load is applied in fixing various kinds of metal desired pieces only from the indoor side when no hand can reach the rear surface after the wall or ceiling is executed. CONSTITUTION: A body part 2 provided with a female screw hole part 4 having a through hole and a fixing face 5 and a string body 6 one end of which is prevented from coming off and which is passed through the female screw hole part 4 are simultaneously passed through a hole part 11 which is preliminarily cut in a wall 10 or ceiling. After the body part and the string part reach the rear surface side, the string body 6 is pulled into the indoor side to allow the fixing face to be fixed to the rear surface, and the female screw hole part 4 is set to the position to be viewed from the hole part 11 to allow various kinds of metal pieces to be screwed to the female screw part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backside mounting bracket, which is installed only from the front surface side of a room after fixing a wall surface or a ceiling surface for a building having a predetermined strength, to fix various metal fittings. For example, the present invention relates to a backside installation bracket installation method and a backside installation bracket that can be installed from the inside of a wall surface made of a gypsum boat.

[0002]

2. Description of the Related Art Conventionally, after finishing the interior by fixing gypsum board etc. to the wall surface and ceiling surface of the building and then pasting wallpaper etc., the metal fittings for the curtain rail, the handrail, the wash appliances etc. and the lighting There is construction work to attach the equipment. Therefore, in the simplest case, various metal fittings may be fixed by directly driving screws and nails from the indoor side to the wall surface, but screws and nails are directly fixed to the wall surface made of gypsum boat from the indoor side. Hitting it will damage the wall surface.

In addition, in such a mounting operation on a plaster board, since it is usually impossible to put a hand on the back surface of the wall surface, various desired metal fittings must be fixed only from the wall surface surface. Various backside brackets have been used in the past.

[0004] Typically, after inserting into a hole formed in a wall surface or a ceiling surface and then tightening a screw, the member is deformed so as to open in a substantially umbrella shape on the back side of the wall surface and is prevented from coming off. There is an anchor type. Or
There is an embedded anchor nut type in which a blade portion having a pilot hole formed on a wall surface and a screw portion which is screwed into the drilled pilot hole are integrally formed. However, each of the above types is convenient (fixed tools are prepared) for fixing desired metal fittings only from the wall surface, but has a structural defect that the load resistance is small.

Therefore, in recent years, as shown in FIG. 10, the base portion 101 and the bracket 102 are connected by a coil spring 105, and the mounting hole portion 11 is preliminarily drilled in the plaster board 10. Bracket 102
A type (product name, Platy plug) in which a screw is screwed into the threaded portion 104 of the bracket 102 through the hole of the mouthpiece 101 is now on the market.
According to this product, since the bracket is firmly fixed to the back surface of the wall surface, there is an advantage that load resistance is increased.

[0006]

However, according to the above-mentioned product, for example, as shown in FIG.
The mounting hole 11 of 15 mm is drilled on the 0 mm-thick gypsum board, the bracket 102 is inserted, and the screw is rotated to extend the coil spring 105. Since there is a limit, the total length is at most about 30 mm, and the maximum load capacity is about 10 kg.

On the other hand, when an external force is applied almost every day when opening and closing like a curtain rail fitting, loosening of the screw occurs after long-term use (the screw tightening force should be determined from the relation of the unit area load on the wall). As a result, there were many metal fittings that slanted downward.

Therefore, the present invention has been made in view of the above problems, and it is impossible to put a hand on the back surface after the wall surface or the ceiling surface is constructed, so that various desired metal fittings can be fixed only from the indoor side. In doing so, it is an object of the present invention to provide a bracket installation method for rear surface installation and a bracket that can significantly improve the withstand load and that does not loosen even when a repeated load is applied.

[0009]

In order to solve the above-mentioned problems and to achieve the object, the present invention is installed from the indoor side after fixing a wall surface or a ceiling surface for a building and fixes various metal fittings. A backside installation bracket construction method, comprising: a main body portion having a female screw hole portion having a through hole and a fixing surface; and a string body inserted into the female screw hole portion with one end thereof prevented from falling off. At the same time, the main body and the cord are made to reach the back surface side of the hole portion at the same time through the hole portion preliminarily bored in the wall surface or the ceiling surface, and then the indoor portion of the wall surface or the ceiling surface. The fixing surface is fixed to the back surface by pulling the string body, the female screw hole portion is viewed from the hole portion, and screws of the various metal fittings are screwed into the female screw hole portion. It is characterized by that.

[0010] Also, there is provided a back surface mounting bracket construction method for constructing a wall surface or a ceiling surface for a building, which is installed from the indoor side to fix various metal fittings, the main body having a female screw hole portion having a through hole. And a cord body, one end of which is inserted into the female screw hole portion while being prevented from falling off, are simultaneously inserted into the hole portion previously drilled in the wall surface or the ceiling surface,
A state in which the main body portion and the cord body are made to reach the back surface side of the hole portion, and then the cord body is pulled toward the indoor side of the wall surface or the ceiling surface to look into the female screw hole portion from the hole portion. While temporarily inserting the insert nut for fixing the various metal fittings inserted into the cord body into the female screw hole portion,
It is characterized in that the cord body is discarded and finally threaded.

Also, there is provided a back surface mounting bracket construction method for constructing a wall surface or a ceiling surface for a building, which is installed from the inside of the room to fix various metal fittings, in which a through hole and a peripheral surface of the through hole are engaged. The main body portion having a mating portion and a string body having one end that is inserted into the through hole and prevented from falling off are simultaneously inserted into the hole portion preliminarily formed in the wall surface or the ceiling surface, and the main body portion is formed. After reaching the back side of the hole and the cord body, and holding the state in which the body portion is pressed on the back surface by pulling the cord body to the indoor side of the wall surface or ceiling surface, It is characterized in that an insert nut having an engaged portion is press-fitted into the hole portion to engage with the engaging portion, and the cord body is discarded.

Also, there is provided a backside mounting bracket construction method for constructing a wall surface or a ceiling surface for a building, which is installed from the indoor side to fix various metal fittings, and which is provided with a female screw hole portion having a through hole. A main body formed in a substantially S-shape or an inverted Z-shape for setting the total length to be equal to or more than the disposition interval of the wall surfaces, and a string body which is inserted into the female screw portion with one end thereof prevented from falling off. At the same time, it is inserted into a hole portion preliminarily bored in the wall surface or the ceiling surface to allow the main body portion to reach the back surface side of the hole portion, and then the cord is attached to the indoor side of the wall surface or the ceiling surface. While pulling the female screw hole portion through the hole portion, the insert nut for fixing the various metal fittings inserted into the cord body is temporarily screwed into the female screw hole portion, and The rotation prevention part formed on the body part Screwed in stop state, and characterized in that the final screwed to discard the cord body.

[0013] A backside mounting bracket that is installed from the indoor side to fix various metal fittings to a hole formed in a wall surface or a ceiling surface for a building, and has a through hole. A main body having a hole and a fixing surface having an adhesive surface or a sharp protrusion; and a string body inserted into the female screw hole with one end thereof prevented from falling off. After inserting the cord and the hole at the same time,
After the main body reaches the back side of the hole,
By pulling the cord body on the indoor side of the wall surface or the ceiling surface, the fixing surface is fixed to the back surface and the female screw hole portion is seen from the hole portion, and the screws of the various metal fittings are attached to the screw portion. It is characterized by being screwed to.

Further, a back surface mounting bracket which is installed from the indoor side to fix various metal fittings to a hole formed in a wall surface or a ceiling surface for a building, and has a female screw having a through hole. A main body portion having a hole portion and a cord body that is inserted into the female screw hole portion while being prevented from falling are simultaneously inserted into the hole portion, and the main body portion and the cord body are connected to the hole portion. After reaching the back side of the inner wall of the wall surface or ceiling surface by pulling the cord body, the female threaded hole portion can be seen through the hole portion, and the cord body is inserted into the cord body. It is characterized in that insert nuts for fixing various metal fittings are temporarily screwed to the screw portion, and then the cord body is discarded and finally screwed.

A back surface mounting bracket for fixing various metal fittings, which is installed from the indoor side after construction of a wall surface or a ceiling surface for a building, wherein a through hole and an engaging portion on a peripheral surface of the through hole are provided. A main body portion having a hole and a cord body that is inserted into the through hole while being prevented from falling off, are simultaneously inserted into the hole portion formed in the wall surface or the ceiling surface, and the main body portion is inserted into the hole portion. After reaching the back side of the body, the state in which the main body is pressed against the back side is held by pulling the cord body on the indoor side of the wall surface or the ceiling surface, and is engaged with the engaging portion. The insert nut having the engaged portion to be engaged is press-fitted into the hole, and the cord body is discarded. It is a backside installation bracket that is installed from the inside of the room and fixes various metal fittings to the hole drilled in the wall surface or the ceiling surface for the building, and is bonded to the female screw hole part having the through hole. A fixed surface having a surface or a sharp protrusion, and a main body formed in a substantially S-shape or an inverted Z-shape to set the interval between the wall surfaces or more, and one end with respect to the female screw hole Is composed of a string body that is prevented from falling off and is inserted, and after the body part and the string body are simultaneously inserted into the hole part, after the body part reaches the back surface side of the hole part, By pulling the cord body on the indoor side of the wall surface or the ceiling surface, the fixing surface is fixed to the back surface and the female screw hole portion is viewed from the hole portion, and the screws of the various metal fittings are attached to the screw portion. It is characterized by being screwed to. With the above structure, after constructing a wall surface or a ceiling surface for a building, a hole is formed to fix various metal fittings from the indoor side, and the cord body is inserted into the hole together with the main body, When you pull the female screw hole, the fixing part provided on the main body will be fixed to the back side and the female screw hole will be visible from the hole. Screw the screws. As a result, the main body is fixed to the back surface of the wall surface with a sufficient area and is large (up to 4
It will withstand a static load of 0 kilograms. Moreover, the screw tightening force is applied to a sufficiently large area to prevent the screw from loosening.

Further, while pulling the string body so that the female screw hole portion can be seen through the hole portion, insert nuts for fixing various metal fittings are inserted into the string body and temporarily screwed to the screw portion,
The insert nut is easily fixed by discarding the string and finally screwing it.

Further, the main body portion having the through hole and the engaging portion on the peripheral surface thereof and the cord body inserted through the through hole are simultaneously inserted into the hole portion so that the main body portion reaches the back surface side. After that, pulling the cord inside the room keeps the main body part pressed against the back surface, and inserts the insert nut that has the engaged part that is engaged with the engaging part into the hole. By discarding the string, the insert nut can be fixed more easily.

Further, the main body is formed in a substantially S-shape or an inverted Z-shape so that the load resistance can be sufficiently maintained even when the space between the wall surfaces is small.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. First, FIG. 1 is an external perspective view of a configuration of an embodiment of the present invention, showing a case of mounting on a wall surface, which can be mounted on a ceiling surface in substantially the same manner. Then, it will be described below.

In the figure, the wall surface 10 is made of a plaster board for construction, a particle board, or a plywood having a predetermined strength, and has a predetermined thickness T of 9 mm to 15 mm, and is fixed to the skeleton of the building. The wall surface 10 is in a state in which the so-called interior work, in which wallpaper and painting are applied and the interior is completed, is completed.

At a required portion of the wall surface 10, for example,
Holes 1 of diameter D for fixing various kinds of metal fittings such as curtain rails, washbasins, handrails, lighting equipment, etc., which are supposed to be installed after the completion of interior work
1 is first drilled.

On the other hand, a body having a predetermined bending strength and a width dimension d formed by bending the reinforcing portion 3 as shown in the figure so as to be inserted into the hole 11 and having a predetermined bending strength. The portion 2 is, for example, shear-pressed from an iron plate having a thickness of 1.6 mm, and the female screw hole portions 4 of M4 and M5 having through holes are provided at a substantially central portion by, for example, burring. There is. Further, the adhesive layer 5 is provided at substantially symmetrical positions with the female screw hole portion 4 interposed therebetween.
Alternatively, the main body 2 is formed by injection molding using a resin having excellent mechanical strength such as polyacetal resin.

The female screw hole portion 4 of the main body 2 thus formed is bonded by allowing the main body 2 to reach the back surface side of the hole portion 11 of the wall surface 10 and then being pulled to the front surface side of the wall surface. A string 6 made of, for example, vinyl chloride is provided in order to bond the layer 5 to the back surface of the wall surface and to allow the female screw hole 4 to be seen through the hole 11, and at the tip of this string 6. As shown in the figure, a stopper portion 7 having a sufficient diameter is integrally formed so as to be locked by the female screw hole portion 4.

Further, the main body portion 2 is a blade portion 8 for making a hole shown by a broken line in the figure, and a blade for making a hole by rotating this portion against a wall surface may be integrally formed. Well, it is possible to deal with the case where the electric drill cannot be used in a narrow place or when the electric drill is forgotten.

FIG. 2 is a perspective view of another embodiment,
The description will be limited to the differences from the configuration of the above-described embodiment, the main body 2 is formed of a 3 mm iron plate, and has two female screw hole portions 4 provided. A double-sided pressure-sensitive adhesive tape cut into a predetermined size of about 3 cm is used as the adhesive layer 5, and the release sheet 5a is provisionally adhered and then provided with a hanging hole 9a shown by a broken line. It is housed in the transparent bag 9 and is ready for sale.

Next, the step of fixing the bracket 1 described above will be described with reference to FIGS. First, FIG.
In (a), since the interval W between the wall surfaces 10 is set to 100 mm or more of the pillar of the building, the total length L of the main body 2 can be set to a maximum of 100 mm. Further, the diameter of the hole portion 11 determined by the above-mentioned width dimension d is set to, for example, 12 mm, and is previously drilled using an electric drill or the like (not shown). After this preparation, the main body 2 is inserted in the direction of the arrow D1 by holding the string 6 in the hole 11 of the wall surface 10.

Next, as shown in FIG. 3 (b), the cord 6 is fed so that the entire main body 2 penetrates the hole 11 (direction of arrow D2) and then dropped by its own weight (arrow). D
3 directions).

Subsequently, as shown in FIG. 3 (c), the cord 6
Is pulled toward you (in the direction of arrow D4), the main body 2 hangs down in a substantially vertical direction and the adhesive layer 5 is bonded to the back surface of the wall surface, and the string 6 is pulled, so that the female screw hole 4
Will naturally be located at the approximate center of the hole 11. As described above, the bracket 1 is adhered to the back surface so that the front surface can be screwed. Here, it is important that the main body portion 2 hangs down in a substantially vertical direction when a vertical load is received on the wall surface, but the female screw hole portion 4 of the main body portion 2 is a little from the center of gravity. If it is misaligned, it can naturally be in a vertical state, and according to experiments, it was difficult for the main body to be in a horizontal state, so that it could be in a state close to a vertical direction.

The main body is adhered to the back of the wall as described above. However, since the string 6 is an obstacle to tightening the screw, the string 6 is dropped between the wall surfaces 10 as shown in FIG. D5
Direction) or by pulling the stopper portion 7 toward the front in the direction of arrow D6 to deform the stopper portion 7 so that the screw portion is forcedly passed, and is pulled out toward the front and then discarded. This completes the preparations for tightening the screws.

Therefore, as shown in FIG. 4 (b), the curtain rail fitting 12 is screwed into the female screw hole portion 4 by using a screw 13 so that the curtain rail fitting 12 is completely fixed. As a result of being fixed in this way, the main body 2 is fixed to the desired metal fitting 12 with a sufficient area on the back surface of the wall surface.

As a result, it was confirmed by hanging the sandbag that it could withstand a static load G of 40 kg at the maximum when it was attached to a gypsum board having a thickness of 15 mm, for example. Further, since the screw tightening force can be received in a sufficiently wide area, there is no fear of the wall surface 10 collapsing and the screw can be strongly tightened with a sense of security, so that it is possible to completely prevent loosening of the screw after long-term use.

Next, FIG. 5 is a view showing another embodiment along the fracture surface of the hole 11, respectively.
(A) shows that a nut 4 having screw holes of M4 and M5 is fixed by welding in the main body 2.
It shows a state in which the screw of the hook 12 in a state where the mouthpiece 14 having a larger diameter is inserted is screwed.

Further, in FIG. 5B, a female screw portion 16 is integrally formed with the main body portion 2 instead of the screw portion, and the wall surface 1 is formed as described above.
It shows a state in which the insert nut 20 is screwed by rotating the nut surface 20a with respect to the female thread portion 16 after being adhered to the back surface of the No. 0. After this, self-tapping screw 1
By screwing 3 into the hole 20b of the insert nut 20, a desired device or instrument can be strongly attached to the wall surface.

FIG. 6 is a partially cutaway external perspective view showing a modified example of FIG. 5 (b).
After adhering to the back surface of the female thread portion 2, the insert nut 20 is passed through the string 6, and then the flat head screw 20e is rotated with respect to the female thread portion 16 shown in FIG.
0c is screwed, the string 6 is discarded, and then the screw hole 20d is rotated and screwed with a Phillips screwdriver. After that, the self-tapping screw 13 shown in FIG. The desired device or instrument is strongly attached to the wall surface by being screwed into 20b.

FIG. 7 is a cross-sectional view showing the bracket 1 of another embodiment by cutting it along the surface along the hole 11. In this figure, after the hole is formed in the wall surface 10 as described above, the main body 2 is positioned on the back surface at the same time as the string 6 as shown in FIG. 7A. A protrusion 2k is formed on the main body 2, and the main body 2 can be prevented from rotating because the string 6 is pulled strongly toward the front side and cuts into the back side of the wall surface 10.
Further, the main body 2 is formed with the engaging portion 40 on the peripheral surface of the through hole, and after the main body 2 reaches the back side of the hole 11, the string 6 is held in the indoor state. While
When the insert nut 20 is press-fitted into the hole 11, the engaged portion 20k formed in the insert nut 20 snaps into the engaging portion 40 and is fixed. After this,
After discarding the string 6, as shown in FIG. 7 (b), the screw 13 is screwed into the hole 20b of the insert nut 20 to strongly attach the desired device or apparatus to the wall surface. Thus, the bracket 1 is very easy to work with.
And the insert nut 20 can be provided. Therefore, even a person having a technique of a large process on Sunday can use it sufficiently.

Finally, FIG. 8 is an external perspective view of the main body 1 in which the space W between the wall surfaces 10 is, for example, only about 10 cm and which is provided for holding a heavy object. The explanation is omitted by giving reference numerals, and only the different parts will be described.

The main body 1 has a width dimension d of about 10 millimeters, a thickness dimension t of about 5 millimeters, and a total length L of about 14 cm along the main body 1 as shown in the drawing. The bending reinforcing portion is formed at the edge portion by processing, or it is formed by appropriately cutting an aluminum extruded material having a substantially S-shaped or inverted Z-shaped cross-sectional shape as shown. There is. Then, female screw hole portions 4 of M4 and M5 having through holes are provided at substantially the central portion thereof by, for example, burring processing or tap hole processing. Further, the adhesive layer 5 is provided at substantially symmetrical positions with the female screw hole portion 4 interposed therebetween. Further, by forming the protrusion 50, a part of the protrusion 50 bites against the wall surface to prevent rotation.

FIG. 8 shows the main body 1 configured as described above.
As shown in (b), the adhesive layer 5 or the protruding portion 50 of the wall surface is infiltrated by infiltrating from the hole portion 11 of the wall surface 10 and reaching the back surface side together with the string 6 and then being pulled to the front surface side of the wall surface. The female screw hole 4 is made to be seen through the hole 11 while being bonded or fixed to the back surface.

After that, an insert nut 20 for fixing various metal fittings inserted through the string 6 is temporarily screwed into the female screw hole portion 4, and a protrusion portion which is a rotation preventing portion formed in the main body portion. 9 (a) by screwing in a state in which the rotation is stopped by 50.
The state shown in is obtained.

By doing so, even when the wall spacing dimension W is smaller than the total length L, a sufficient load bearing capacity can be realized, and a maximum wall weight of 60 kg can be withstood in the case of a wall thickness of 15 mm. I was able to. Therefore, as shown in FIG. 9B, the metal fitting 12 can be used as a hook for preventing the furniture from falling down by screwing the metal fitting 12 into the insert nut 20 with the screw 13.

[0041]

As described above, according to the present invention,
The hands cannot be put on the back of the wall or ceiling, and when fixing various desired metal fittings only from the indoor side, the withstand load can be greatly improved and there is no risk of loosening even if repeated loads are applied. It is possible to provide a back surface mounting bracket construction method and a back surface mounting bracket.

[0042]

[Brief description of drawings]

FIG. 1 is an external perspective view according to an exemplary embodiment of the present invention.

FIG. 2 is a plan view according to another embodiment example.

FIG. 3 is a process drawing of the first half of the bracket of FIG.

FIG. 4 is a process drawing of the latter half of the bracket of FIG.

FIG. 5 is a cross-sectional view according to another embodiment example.

FIG. 6 is an external perspective view according to another embodiment example.

FIG. 7 is a sectional view according to another embodiment.

FIG. 8A is an external perspective view according to another embodiment.
(B) It is an explanatory view of the enforcement process.

9 is a transverse cross-sectional view of the main body of FIG. 8 after being applied. (B)
It is a usage state diagram after enforcement.

FIG. 10 is a cross-sectional view of a main part according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Bracket, 2 ... Main body part, 3 ... Reinforcement part, 4 ... Female screw hole part, 5 ... Adhesive layer, 6 ... String, 7 ... Stopper part, 10 ... Wall surface, 11 ... Hole part, 13 ... Screw, 20 ... Insert nut.

Claims (13)

[Claims] 1. A bracket installation method for backside installation, which comprises installing a wall surface or a ceiling surface for a building and then fixing various metal fittings installed from the indoor side, wherein a female screw hole portion having a through hole and a fixing surface are provided. A main body portion including a threaded body and a string body inserted into the female screw hole portion at one end thereof so as to prevent the threaded portion from being inserted into a hole portion previously drilled in the wall surface or the ceiling surface; Part and the cord body to reach the back side of the hole portion, and then the cord surface is pulled toward the indoor side of the wall surface or ceiling surface to fix the fixed surface to the back surface and the female screw hole portion. Is viewed from the hole, and the screws of the various metal fittings are screwed into the female screw hole. 2. A backside installation bracket installation method for installing a wall surface or a ceiling surface for a building and then fixing various metal fittings installed from the indoor side, the main body having a female screw hole portion having a through hole. Part and a string body, one end of which is inserted into the female screw hole part while being prevented from falling off, are simultaneously inserted into a hole part previously drilled in the wall surface or the ceiling surface, and the main body part and the string After reaching the body to the back side of the hole, pull the cord on the inner side of the wall surface or the ceiling surface so that the female screw hole can be seen through the hole. Temporarily screw the insert nut for fixing the various metal fittings that have been inserted into the female screw hole,
A method for constructing a bracket for backside installation, characterized in that the cord body is discarded and finally screwed. 3. A backside mounting bracket construction method for constructing a wall surface or a ceiling surface for a building, which is installed from the indoor side to fix various metal fittings, wherein the through hole and the peripheral surface of the through hole are engaged. The main body portion having a mating portion and the string body inserted into the through hole with one end prevented from falling off are simultaneously inserted into the hole portion previously drilled in the wall surface or the ceiling surface, After reaching the back side of the hole and the cord body, and holding the state in which the body portion is pressed on the back surface by pulling the cord body to the indoor side of the wall surface or ceiling surface, A backside installation bracket construction method, wherein an insert nut having an engaged portion is press-fitted into the hole portion to engage with the engaging portion, and the cord body is discarded. 4. A backside mounting bracket construction method for constructing a wall surface or a ceiling surface for a building, which is installed from the indoor side to fix various metal fittings, the method including a female screw hole portion having a through hole. A main body formed in a substantially S-shape or an inverted Z-shape for setting the total length to be equal to or more than the disposition interval of the wall surfaces, and a string body which is inserted into the female screw portion with one end thereof prevented from falling off. At the same time, it is inserted into a hole that is preliminarily bored on the wall surface or the ceiling surface, and after the main body reaches the back side of the hole,
The insert nut for fixing the various metal fittings, which is inserted into the cord body, is inserted into the cord body while the female screw hole portion is seen through the hole portion by pulling the cord body on the indoor side of the wall surface or the ceiling surface. A back surface, which is temporarily screwed into the female screw hole portion and screwed in a state in which the rotation stopper portion formed in the main body portion has stopped the rotation, discards the cord body, and finally screws. Installation bracket installation method. 5. A backside installation bracket that is installed from the indoor side to fix various metal fittings to a hole formed in a wall surface or a ceiling surface for a building, and a female screw having a through hole. A main body having a hole, a fixing surface having an adhesive surface or a sharp protrusion, and a string body inserted into the female screw hole at one end thereof so as to be prevented from falling off. After the cord and the cord are inserted through the hole at the same time, the main body is made to reach the back side of the hole, and then the cord is pulled toward the inside of the wall surface or the ceiling surface to fix the cord. A bracket for rear surface installation, characterized in that the surface is fixed to the rear surface, the female screw hole portion is viewed from the hole portion, and the screws of the various metal fittings are screwed into the screw portion. 6. A backside mounting bracket which is installed from the indoor side to fix various metal fittings to a hole formed in a wall surface or a ceiling surface of a building, the female screw having a through hole. A main body portion having a hole portion and a cord body that is inserted into the female screw hole portion while being prevented from falling off are simultaneously inserted into the hole portion, and the main body portion and the cord body are connected to the hole portion. After reaching the back side of the inner wall of the wall surface or ceiling surface by pulling the cord body, the female threaded hole portion can be seen through the hole portion, and the cord body is inserted into the cord body. A bracket for backside installation, characterized in that insert nuts for fixing various metal fittings are temporarily screwed to the screw portion, and then the cord body is discarded and finally screwed. 7. A backside installation bracket that is installed from the indoor side and fixes various metal fittings after a wall surface or ceiling surface for a building is constructed, the through hole and an engaging portion on a peripheral surface of the through hole. And a cord body that is inserted into the through hole while being prevented from falling off at the same time with respect to the hole portion that is formed in the wall surface or the ceiling surface. After reaching the back side of
An insert nut that holds the state in which the main body portion is pressed onto the back surface by pulling the cord body on the indoor side of the wall surface or the ceiling surface and that has an engaged portion that is engaged with the engaging portion. A bracket for backside installation, wherein the bracket is pressed into the hole and the cord is discarded. 8. A backside installation bracket that is installed from the indoor side and fixes various metal fittings to a hole formed in a wall surface or a ceiling surface for a building, and a female screw having a through hole. A hole, a fixing surface having an adhesive surface or a sharp protrusion, and a main body formed in a substantially S-shape or an inverted Z-shape in order to set the interval between the wall surfaces or more, and the female screw hole. A cord body, one end of which is prevented from falling and is inserted, and the main body portion and the cord body are simultaneously inserted into the hole portion, and then the main body portion is attached to the back surface side of the hole portion. After reaching the inner wall of the wall surface or the ceiling surface, the string surface is pulled to fix the fixing surface to the back surface and the female screw hole portion is viewed from the hole portion. Backside installation, characterized in that screws are screwed into the screw parts Bracket. 9. The cord body has a stopper portion formed at a front end portion to be locked by the through hole, and is inserted into the through hole so that the main body portion is on the back surface of the hole portion of the wall surface. After being reached to the side, the adhesive surface of the fixing surface is adhered to the back surface by being pulled toward the front surface side of the wall surface, and the female screw hole is made to be seen through the hole and then discarded. The bracket for back side installation according to any one of claims 5 to 8 characterized by things. 10. The back side installation according to claim 5, wherein a blade portion for punching the hole is integrally formed at an edge portion of the main body portion. bracket. 11. The wall surface is a gypsum board having a thickness of 9 mm to 15 mm, and the entire length of the main body portion is set to be equal to or less than an arrangement interval between the wall surfaces.
The bracket for back side installation according to claim 7. 12. The bracket for back side installation according to claim 6 or 7, wherein the insert nut includes a pilot hole of a self-tapping screw and an engaging portion rotated by using a tool. . 13. An insert nut having a female screw hole formed concentrically with said outer peripheral screw portion while an outer peripheral screw portion formed on an outer peripheral surface is screwed into said female screw hole portion, and said main body portion is provided with said insert nut. The bracket for back side installation according to claim 8, wherein the load resistance is further enhanced by being screwed into the bracket.