JP2011058317A - Method for forming attachment backing, and attachment backing forming tool used for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for forming attachment backing, and an attachment backing forming tool conveniently usable for the method having sufficient strength even for a weak wall, low in cost with high working efficiency without impairing appearance, and versatile to cope with various brackets. <P>SOLUTION: The method for forming attachment backing includes a hole forming process for forming a through hole in a predetermined part of a surface plate; a first resin layer forming process for forming a first resin layer by pressure-bonding curable resin to the inner peripheral surface of the through hole in the surface plate; a second resin layer forming process for forming a second resin layer by putting curable resin into a hollow space through the through hole and pressure-bonding the curable resin to the back face of the surface plate; a third resin layer forming process for forming a third resin layer on the surface of the second resin layer by putting curable resin into the hollow space through the through hole; and a wall forming process for forming an attachment wall by filling curable resin in the first to third resin layers. The attachment backing forming tool includes a handle part, an insertion part and a working tool part, and the working tool part includes an insertion protrusion and a spatula part. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is attached to the walls of bathrooms, toilets, living rooms, hallways, stairs, etc. in, for example, apartment houses such as condominiums, private or public facilities such as libraries, gymnasiums, and museums and general houses. The present invention relates to a forming method for forming a mounting base of a mounting member such as a handrail and a forming tool used in this forming method, and in particular, a handrail or the like by a work only from one wall surface to a relatively low-strength thin wall. The present invention relates to a forming method for forming a mounting base when mounting a mounting member, and a forming tool used in this forming method.

  Conventionally, generally, a wall surface has a crosspiece interposed between a partition wall and a surface plate. For example, a hollow portion is formed by interposing a crosspiece or mortar between the concrete surface and the surface plate. In such a hollow wall structure, when attaching a handrail or other metal fittings to the surface plate of the hollow part, the surface plate is generally thin and cannot be directly fixed with screws, and therefore a handrail or the like must be attached. I could not.

  If an attempt is made to use a base such as a crosspiece to attach a handrail with this hollow wall structure, there is a problem in that the position of the base and the mounting position of the metal fitting are deviated or the metal mounting position is restricted. In addition, in order to provide the base at the mounting position of the bracket after the fact, the surface plate must be removed, the base such as a crosspiece must be inserted at the mounting position of the bracket, and the removed surface plate must be returned. There was a problem that became complicated.

  In order to solve such problems, a method for forming an attachment base using a flexible resin has been proposed (see, for example, Patent Document 1 and Patent Document 11). In addition, a method of fixing using a threaded anchor (for example, see Patent Document 2), a method using a band plate handrail to improve strength (for example, see Patent Document 3), use of a plurality of mounting brackets, A method of fixing the pin by hitting it diagonally (for example, see Patent Document 4), a method of fixing an anchor that reaches the position of the ground and screwing it with a special handrail (for example, see Patent Document 5), space A method of fixing by inserting a screw-like molded product with a resin and injecting resin there (for example, see Patent Document 6), a method of opening a through hole and inserting a bag and injecting resin and fixing (for example, Patent Document) 7), a method of opening a through hole and inserting and fixing a base plate (see, for example, Patent Document 8), a method of fixing by driving a fixed tool spread in all directions on the back surface (see, for example, Patent Document 9) ),big Method of fixing by hitting using a reinforcing plate nail obliquely (e.g., see Patent Document 10) it has been proposed.

Japanese Patent No. 3716397 Japanese Patent Laid-Open No. 10-331819 JP 2004-162320 A Utility Model Registration No. 3132092 JP 2001-59322 A JP-A-7-127611 JP 2002-21283 A JP-A-11-71878 Japanese Utility Model Publication 5-8016 Utility Model Registration No. 3123395 JP 2000-96742 A

  However, the prior art described above has the following problems. That is, with the techniques of Patent Document 2, Patent Document 4, Patent Document 6, and Patent Document 9, the resistance area is small and sufficient strength for application purposes such as handrails cannot be secured. Further, with the techniques of Patent Document 3 and Patent Document 5, the number of parts is large and the cost is significantly increased. In the techniques of Patent Document 1, Patent Document 7 and Patent Document 8, the strength of the wall itself around the screw is reduced by opening a through hole between the screw holes of the bracket. Moreover, in the technique of patent document 10, a mounting plate is required on the surface, and the appearance changes depending on the presence or absence of a base, and the overall appearance is impaired. It is costly and wasteful to install everything to improve the appearance. Furthermore, in the techniques of Patent Document 1 and Patent Document 11, since the soft resin is used, the original hardness and strength of the injected resin cannot be exhibited. The present invention solves these problems.

The object of the present invention is to provide sufficient strength even with a fragile wall, and in addition, it is versatile enough to handle brackets of various design shapes that are sold at low cost without damaging the appearance and good workability. Another object of the present invention is to provide a mounting base forming tool that can be advantageously used in the above mounting base forming method.

  The method for forming an attachment base according to claim 1 of the present invention is a method for forming an attachment base for attaching an installation member to a hollow wall structure in which a hollow space exists on the back surface side of the front plate. A hole forming step of forming a through hole in a predetermined portion of the face plate, a first resin layer forming step of forming a first resin layer by pressure-bonding a curable resin to the inner peripheral surface of the through hole of the surface plate, A second resin layer forming step of forming a second resin layer by forming a second resin layer by forming a first resin layer and then pressing the curable resin into the hollow space through the through-holes and then press-bonding to the back surface of the surface plate; A third resin layer forming step of forming a third resin layer on the surface of the second resin layer by inserting a curable resin into the hollow space, and filling the curable resin into the first to third resin layers A wall portion forming step for forming the mounting wall portion.

  In the method for forming a mounting base according to claim 2 of the present invention, in the third resin layer forming step, a curable resin is applied to the surface of the second resin layer to form the third resin having a predetermined thickness. A mounting base forming tool for forming a resin layer is used, and the mounting base forming tool is provided at a handle portion, a distal end portion of the handle portion, and inserted into the through hole, and the insertion portion. A working tool portion extending from the insertion projection portion extending from the distal end portion of the insertion portion, and a spatula portion provided at the distal end portion of the insertion projection portion and extending vertically from the distal end portion. It is characterized by having.

  Further, in the method for forming the mounting base according to claim 3 of the present invention, the mounting base forming tool is also used in the second resin forming step, and the spatula portion is pulled by pulling the handle portion toward the front side. The spatula portion is rotated in a state where it is pressed against the back surface of the front plate, and the curable resin is pressure-bonded to the back surface of the front plate.

  Furthermore, the mounting base forming tool according to claim 4 of the present invention includes a handle portion, and an insertion portion that is provided at a distal end portion of the handle portion and is inserted into a through hole formed in the surface plate of the hollow wall structure. A work tool portion extending from the insertion portion, the work tool portion being provided at an insertion protrusion extending from a distal end portion of the insertion portion and a distal end portion of the insertion protrusion, and extending vertically from the distal end portion. It has a spatula part.

  According to the method for forming a mounting base according to claim 1 of the present invention, a curable resin is pressure-bonded to the inner peripheral surface of the through hole formed in the surface plate and the back surface of the surface plate (first resin layer forming step, The second resin layer forming step) allows the third resin layer to be formed without being dropped when a resin having low fluidity and poor wettability is pushed through the through-hole into the surface plate. As a result, a large through hole is not required just by opening a small through hole in the mounting portion of the screw of the hollow member, and the strength reduction of the surface plate is suppressed by a large strength holding area without reducing the strength of the surface plate. It can be said that.

  In addition, since a hard resin that can hold screws only around the through hole is formed, the base is constructed accurately according to the position of the screws, and an efficient mounting base that does not waste with the minimum hard resin There is an effect that can be built.

  Furthermore, since the through hole is covered with the installation parts to be attached, there is an effect that the aesthetic appearance of the surface plate is not impaired. In the unlikely event that it is removed, the through hole such as the insertion port for inserting the part cannot be opened, so that the repair is minimal.

  Further, according to the method for forming the mounting base of the second aspect of the present invention, it is provided with a handle portion, an insertion portion provided at a tip portion of the handle portion, and a work tool portion provided in the insertion portion. Therefore, the curable resin is applied to the surface of the second resin layer to a predetermined thickness by inserting the insertion portion into the through hole and pressing the handle portion against the surface of the surface plate to perform the coating operation. The resin layer can be easily formed.

  Further, according to the method for forming the mounting base according to claim 3 of the present invention, the spatula portion of the inserted work tool portion is placed in the through hole by rotating while pulling the mounting base forming tool. The mold resin can be easily crimped to the back surface of the front plate.

  According to the mounting base forming tool of claim 4 of the present invention, the insertion portion is provided at the distal end portion of the handle portion, and the work tool portion is provided at the distal end portion of the insertion portion. By contacting the surface plate, it is possible to stop the surface plate from entering the through-hole of a certain level or more, thereby maintaining the distance between the surface plate and the spatula portion of the work tool unit to provide the required strength. A third resin layer having a possible thickness can be formed. This realizes the stability and certainty of the work. In addition, by using the spatula portion of the work tool portion, the second resin layer can be easily formed by pressure-bonding the curable resin to the back surface of the front plate, thereby preventing the curable resin from dropping. A third resin layer having a predetermined thickness can be formed.

Sectional drawing which shows the state which applied the formation method of the attachment base | substrate according to this invention, and attached the handrail. The simplified sectional view showing the state where the through hole was formed in the surface plate. FIG. 3 is a simplified cross-sectional view showing a state in which a first resin layer is formed by press-bonding a curable resin to the inner peripheral surface of a through hole using a coating rod. The simplified sectional view showing the state where curable resin for forming the 2nd resin layer was poured into the penetration hole. The simplified sectional view which shows the state which inserted the work tool part of the attachment base | substrate formation tool through the through-hole. The front view which shows one Embodiment of the attachment base | substrate formation tool according to this invention. FIG. 7 is a simplified cross-sectional view showing a state where the attachment base forming tool of FIG. 6 is inserted through a through hole. The simplified sectional view showing the state where the 2nd resin layer was formed by pressure-bonding curable resin to the back of a penetration hole. The simplified sectional view showing the state where curable resin for forming the 3rd resin layer was poured through the penetration hole. The simplified sectional view showing the state where the attachment foundation formation tool was inserted through the through hole. The simplified sectional view showing the state where the 3rd resin layer was formed in the surface of the 2nd resin layer of the back of a surface board. The simplified sectional view which shows the state which inject | poured curable resin for forming an attachment wall part through a through-hole. The simplified sectional view which shows the state which provided the pilot hole of the screw for attaching a handrail bracket.

  Hereinafter, with reference to an accompanying drawing, one embodiment of the formation method of the attachment foundation according to the present invention and one embodiment of the attachment foundation formation tool used for this are described.

  First, with reference to FIG. 1, the state which attached the handrail as an installation member using this formation method of an attachment base is demonstrated. In FIG. 1, in this embodiment, a surface plate 1 is disposed on the surface side of a partition wall (not shown), and a hollow space 101 is provided between the partition wall and the surface plate 1. A mounting wall portion 17 is formed by injecting a room-temperature curable resin into the bracket, and a bracket 19 for mounting the handrail 21 is attached using the mounting wall portion 17.

  A through hole 2 is provided at a predetermined portion of the surface plate 1 disposed on the surface side of the hollow wall structure 102 having the hollow space 101, and a first resin layer 10 is provided on the inner peripheral surface of the through hole 2. A second resin layer 14 is provided around the through-hole 2 on the back surface of the front plate 1, and a third resin layer 16 is further provided on the surface side of the second resin layer 14, and the first, second, and third resins are provided. A mounting wall portion 17 is provided inside the layers 10, 14, and 16, and the first to third resin layers 10, 14, 16 and the mounting wall portion 17 are formed of a room temperature curable resin.

  Corresponding to the mounting wall portion 17 (two shown in the embodiment), the mounting portion 103 of the bracket 19 is positioned, and screws 20 are screwed onto the mounting wall portion 17 through holes provided in the mounting portion 103. The bracket 19 is attached to the attachment wall portion 17, that is, the surface plate 1. As described above, the plurality of brackets 19 are attached to the surface plate 1 at intervals, and the handrail 21 is attached to these brackets 19 as required.

  Such a handrail can be attached according to the following construction procedure, for example, as shown in FIGS. First, as shown in FIG. 2, the through-hole 2 is formed in the surface board 1 which comprises the inner wall of a room (hole formation process). The through hole 2 is formed so that the diameter is, for example, about 10 mm.

  The diameter when opening the through-hole 2 is 5 mm or more, preferably 8 to 15 mm. When the diameter is 5 mm or less, it is difficult to insert a mounting base forming tool (to be described later) that can be sufficiently widened, and it is necessary to push in several times to supply the required amount of resin formed on the back surface 3 side of the front plate 1. Therefore, the workability is poor, and when a load is applied, the resin portion does not deform and the shape cannot be maintained, and it is difficult to secure a necessary area. If the diameter is 20 mm or more, in many cases, the through-hole 2 may protrude from the mounting portion 103 of the bracket 19 and impair the appearance, and the amount of resin to be injected is unnecessarily large and is useless.

  Next, as shown in FIG. 3, a room temperature curable resin is attached to the tip of the round bar 11, and the tip of the round bar 11 is inserted into the through hole 2 and rotated and moved back and forth. Resin is rubbed against the inner peripheral surface 22 of the through-hole 2 and pressed to form the first resin layer 10 over the entire inner peripheral surface 22 (first resin layer forming step). The round bar 11 used here only needs to have a diameter that is less than the diameter of the through-hole 2 and allows a resin to enter, and an attachment base forming tool (described later) can also be used. Further, the shape is not limited as long as the resin can be rubbed (that is, pressure-bonded to the inner peripheral surface 22 of the through hole 2) without being a round bar.

  The room temperature curable resin used here is preferably an epoxy resin, a urethane acrylate resin, an epoxy acrylate resin, a polyester resin, a urethane resin, or the like, and is preferably used as a room temperature reaction type. A photo-curing type having a moisture curing function or a local heat-curing type can also be used. The moisture-curing type has a spray type, which is desirable from the viewpoint of workability. However, it is not desirable because the time required to reach the strength at which the screw can be hit at room temperature is not within 6 hours, because the work spans the next day.

  Further, the viscosity (including thixotropy) of the room temperature curable resin described above is such that the resin is pushed into the through-hole 2 for forming the mounting wall portion 17 so that it does not drip until it enters the step of spreading after pushing. It must be without. Moreover, the shape should not be changed until the resin layer is cured on the back surface 3 side of the front plate 1 until it is cured, and the shape must be maintained.

  The cured resin hardness and adhesive strength must be such that no load is applied to the back surface 3 side of the front plate 1 and the inner peripheral surface 22 of the through hole 2 when a load is applied. For this purpose, it is necessary to have an adhesive strength and hardness that do not cause deformation leading to the destruction of the surface plate 1 when the formed mounting base, that is, the mounting wall portion 17 is loaded, and the load is distributed to the entire back surface 3 side. It is necessary to The Shore hardness D must be 50 or more, preferably 70 or more.

  Next, as shown in FIG. 4, the room temperature curable resin 12 is pressed and pressed into the through hole 2 for the mounting wall portion 17 using a spatula (not shown). Thus, the second resin layer 14 is formed (second resin layer forming step). The cold-cured resin 12 that has been press-fitted together with the first resin layer 10 that is pressure-bonded to the inner peripheral surface 22 of the through-hole 2 closes the through-hole 2, and excess resin is placed on the back surface 3 side of the surface plate 1. It will be in a state that protrudes.

  Then, as shown in FIG. 5, the attachment base forming tool 104 is inserted through the injected room temperature curable resin 12. At this time, the high-viscosity resin selected so as not to drip is poor in wettability, and without the first resin layer forming step of FIG. However, the first resin layer 10 that has been rubbed and pressure-bonded is fitted to the first resin layer 10 without being dropped. Then, by rotating the mounting base forming tool 104 while pulling, the resin 12 press-fitted by the inclined spatula portion 4 of the mounting base forming tool 104 is rubbed against the back surface 3 of the through-hole 2 and pressed.

  Here, the attachment base forming tool 104 will be described with reference to FIGS. As shown in FIG. 6, the attachment base forming tool 104 has a substantially L-shaped structure as a whole, but may have a structure in which the book is opened after being inserted into the through hole 2. The mounting base forming hole 104 is preferably L-shaped as shown in FIG. The attachment base forming tool 104 includes a handle portion 9 to be gripped during work, an insertion portion 7 provided at the distal end portion of the handle portion 9, and a work tool portion 5 provided at the distal end portion of the insertion portion 7. ing. The handle portion 9 has an outer shape larger than that of the insertion portion 7, and a step portion is provided between the handle portion 9 and the insertion portion 7, and the contact surface 6 is defined by the step portion, and the contact surface 6 is displayed. It comes into contact with the surface of the face plate 1.

  The outer diameter of the insertion portion 7 corresponds to the inner diameter of the through hole 2 formed in the surface plate 1, and the insertion portion 7 is inserted into the through hole 2. The work tool portion 5 is substantially L-shaped, and has an insertion protrusion 8 that extends linearly from the distal end of the insertion portion 7, and a spatula portion 4 that extends vertically from the insertion protrusion 8 in a lateral direction. An inclined spatula action part 105 is provided inside the spatula part 4.

  The spatula 4 has an inclination to spread the room temperature curable resin 12, and the length in the longitudinal direction is adjusted according to the required strength, and the load distribution area can be adjusted by changing the rotation radius. The length is preferably that having a rotational diameter of 15 mm or more, desirably 30 mm or more. When the length is 15 mm or less, when the surface plate 1 is a gypsum board or a thin plywood, the member strength is low, and it is difficult to use it for applications such as handrails. Although many patents have been issued, it is intended to increase the strength by increasing the resistance by creating a catch only around the mounting screw part of the member, and it can be expected to improve the strength beyond a certain level in brittle gypsum board and thin plywood is not. A locally loaded method cannot provide sufficient strength.

  The work tool portion 5 can be rotated uniformly by using the insertion portion 7 to the through hole 2 as a guide. In order to adjust the distance between the spatula action part 105 of the spatula part 4 and the back surface 3 of the front plate 1 (that is, the thickness of the third resin layer 16), a removable thickness adjusting member (not shown) is attached. By using such a thickness adjusting member, the thickness of the third resin layer 16 can be adjusted, and also for a member having a different thickness such as a plaster board or plywood as the surface plate 1 Can respond.

  As shown in FIG. 7, the attachment base forming tool 104 is configured such that the spatula portion 4 is inserted into the back surface 3 of the front plate 1 by inserting the work tool portion 5 of the L-shaped structure attachment base formation tool 104 while rotating 90 degrees. Can be inserted to the side.

  Then, as shown in FIG. 8, by pulling the attachment base forming tool 104 toward the front side (right side in FIG. 5) and rotating the work tool part 5, the spatula part 4 attaches the room temperature curable resin 12 to the surface plate 1. The second resin layer 14 is formed on the back surface 3 by being rubbed and pressure-bonded to the back surface 3. At this time, the amount of the room-temperature curable resin to be pressure-bonded may be small and may be rubbed against the back surface 3 of the surface plate 1 within the rotation diameter of the spatula portion 4.

  Next, as shown in FIG. 9, the mounting base forming tool 104 is pulled out from the through hole 2 of the surface plate 1, and the room temperature curable resin 15 is injected in the same manner as in the second resin layer forming step of FIG. Thus, the third resin layer 16 is formed (third resin layer forming step).

  As shown in FIG. 10, the mounting base forming tool 104 is inserted through the through-hole 2 as described above, and by inserting it, the press-fitted room temperature curable resin 15 is further pressed, and the mounting base forming tool 104 is pressed. The room temperature curable resin 15 press-fitted by the inclined spatula portion 4 of the mounting base forming tool 104 is rotated and spread while adhering to the second resin layer 14 to which the back surface 3 of the front plate 1 is pressed. The third resin layer 16 is formed on the surface of the second resin layer 14. At this time, even a highly viscous resin with low wettability is held without falling by the second resin layer 14 rubbed and pressure-bonded. In order to secure the necessary resin thickness, the steps of FIGS. 9 and 10 are repeated a plurality of times. The number of times at this time can be changed according to the thickness and material strength of the surface plate 1, the diameter of the through hole 2, and the like.

  In this way, as shown in FIG. 11, the room temperature curable resin 15 injected by the rotation of the mounting base forming tool 104 is spread and the third resin layer 16 is formed. This depends on the distance from the contact surface on the back surface 3 side of the front plate 1 of the spatula portion 4 of the mounting base forming tool 104 to the contact surface portion of the front surface plate 1, that is, the contact surface 6 of the handle portion 9. Is formed to a predetermined thickness, and the first to third resin layers 10, 14, and 16 are united in this manner.

  Next, as shown in FIG. 12, the attachment base forming tool 104 is pulled out, and the space formed when it is pulled out is filled with room temperature curable resin in the same manner as shown in FIG. (Wall part formation process). In this way, the first to third resin layers 10, 14, 16 and the mounting wall portion 17 are integrated, and the mounting base, that is, the mounting wall portion 17 is formed in the through hole 2 of the surface plate 1. Leave it at room temperature for a while until it is sufficiently strong.

  Next, as shown in FIG. 13, after the formed mounting wall portion 17 (that is, the mounting base) is cured and has sufficient strength, a pilot hole 18 is formed in the mounting wall portion 17. By making the pilot hole 18 in this way, it is possible to prevent cracking of the formed mounting base that may occur when the screw 20 is driven. The diameter of the pilot hole 18 is adjusted by the screw 20 to be used. The pilot hole 18 is not always necessary, and may be omitted when the bracket 19 is attached using an attachment screw (not shown).

  This mounting base (that is, the mounting wall portion 17) is used for the hollow wall structure 102. It is a hollow wall structure that is configured with a crosspiece between two surface plates, or a hollow wall structure in which a surface plate is pasted on a concrete surface with a mortar or crosspiece, or a similar hollow wall structure ceiling, floor. It can also be applied to joinery such as doors.

  Moreover, the installation member attached to the attachment base (attachment wall part 17) formed as mentioned above will not ask | require the kind if it is a member fixed to the surface board 1 with screws. For example, if the hollow wall structure 102 is a wall, it is an installation member for handrails, various metal fittings, various construction materials, etc., if it is a ceiling, it is an installation member for lighting equipment, etc., and if it is a floor, a strength-added base material And the like.

The above-described embodiment has been described using a room temperature curable resin as the curable resin, but the present invention is not limited to this, and a heat curable resin, a photo curable resin, an electron beam curable resin, and the like can also be used. .
Moreover, although it demonstrated using the method of press-fitting using a simple spatula (not shown) etc., the spatula part 4 of the attachment base | substrate formation tool 104 Insertion part 7 Insertion protrusion part 8 Each inside of the handle part 9 A continuous resin injection hole may be provided to inject a curable resin.

  In order to confirm the effect of the method for forming the mounting base according to the present invention, the construction was confirmed as follows.

  First, a through hole 2 having a diameter of 10 mm was drilled in a gypsum bow having a thickness of 12.5 mm. Then, a mixed two-component room temperature curable epoxy resin per 6.5 cc / hole was made, applied to the tip of the round bar, and rubbed against the inner peripheral surface of the through hole to form a first resin layer. The diameter of the round bar is 5mm, 0.1cc is attached to the tip, and the inner peripheral surface of the through hole is rubbed while rotating and moving back and forth, and the entire inner peripheral surface of the through hole is colored resin It was confirmed.

  Next, the mixed two-component room temperature curable epoxy resin was taken on a 1.5 cc spatula, pressed into the through hole, and press-fitted to fill the through hole. Then, the work tool portion of the mounting base forming tool was inserted through the through hole, and the resin filled by rotating while pulling was rubbed against the back surface of the front plate. Since it does not spread enough in one operation, take 0.8 cc of resin on the spatula, press it into the through hole, inject it, and rub against the back side of the surface plate using the mounting base forming tool in the same way as the first operation. In this way, a second resin layer was formed. By this operation, the second resin layer resin 14 was thinly formed.

  Then, the mixed two-component room temperature curing type epoxy resin is taken in a 0.8 cc spatula, pressed into the through hole and injected, and the mounting base forming tool is inserted in the same manner as described above. The third resin layer having a constant resin thickness is applied to the back surface of the front plate (the surface of the second resin layer). Could be formed. Since the amount of resin is not enough in one operation, take the two-component room temperature curing type epoxy resin mixed again into a 0.8cc spatula, press it into the through hole, press fit, and insert and press the mounting base forming tool. Rotated. In this way, it was possible to form the third resin layer having the base thickness having sufficient base strength.

  Since there is a trace hole in the center where the mounting base forming tool is pulled out, in order to ensure sufficient contact area between the screw part and the part to be filled, 1.5 cc mixed two-component room temperature curing epoxy system Resin was filled with a spatula by pressing against the through hole of the component mounting portion. The work so far seems to have many processes when written in sentences, but since it is a simple repetition of the same work, it can be formed in a work time of about 7 minutes / hole and was a relatively simple work.

  It was allowed to stand for about 1 hour until it hardened, a pilot hole was drilled with a 2.8 mm drill in the mounting base (mounting wall portion) that had become sufficiently hard, and a handrail bracket was attached with screws 20 having a diameter of 3 or 2 mm. The curing time was completed at 25 ° C. for 1 hour, and the strength to withstand vertical and horizontal loads of 120 kgf required as the strength of handrails for 24 hours after curing to reach the final strength was obtained.

  The test method uses a wall bracket made by Best HI Sales Co., Ltd., fixed at two locations with 900 mm span by the above method, left to stand for 24 hours, and vertical and horizontal loads at the center. A test was conducted. The required strength of the handrail was referred to the standard test method in the excellent housing part performance test method document of Better Living Foundation.

DESCRIPTION OF SYMBOLS 1 Surface plate 2 Through-hole 3 Back surface 4 Spatula part 5 Work tool part 6 Contact surface 7 Insertion part 8 Insertion protrusion part 9 Handle part 10 1st resin layer 11 Round bar 12 Room temperature curable resin 14 2nd resin layer 15 Room temperature cure Mold resin 16 Third resin layer 17 Mounting wall portion 18 Pilot hole 19 Bracket 20 Screw 21 Handrail 22 Inner wall 101 Hollow space 102 Hollow wall structure 103 Mounting portion 104 Mounting base forming tool 105 Spatula action portion

Claims (4)

  A forming method for forming an attachment base for attaching an installation member to a hollow wall structure in which a hollow space exists on the back surface side of the surface plate, the hole forming step forming a through hole in a predetermined portion of the surface plate; A first resin layer forming step in which a first resin layer is formed by pressure-bonding a curable resin to an inner peripheral surface of the through hole of the surface plate; and after forming the first resin layer, the hollow space is formed through the through hole. And a second resin layer forming step of forming a second resin layer by pressure bonding to the back surface of the front plate, and the second resin layer by inserting the curable resin into the hollow space through the through hole. Including a third resin layer forming step of forming a third resin layer on the surface of the substrate and a wall forming step of forming a mounting wall portion by filling the first to third resin layers with a curable resin. A method for forming a mounting base.   In the third resin layer forming step, a mounting base forming tool for applying a curable resin to the surface of the second resin layer to form the third resin layer having a predetermined thickness is used. The forming tool includes a handle portion, an insertion portion provided at a distal end portion of the handle portion and inserted into the through hole, and a work tool portion extending from the insertion portion, and the work tool portion includes the insertion portion. 2. The method of forming an attachment base according to claim 1, further comprising: an insertion protrusion extending from a distal end portion of the first protrusion portion; and a spatula portion provided at a distal end portion of the insertion protrusion portion and extending perpendicularly from the distal end portion.   The mounting base forming tool is also used in the second resin forming step, and rotates the spatula part in a state where the handle part is pulled toward the front side and the spatula part is pressed against the back surface of the front plate. The method for forming an attachment base according to claim 2, wherein the curable resin is pressure-bonded to the back surface of the front plate. The work tool portion includes a handle portion, an insertion portion that is provided at a distal end portion of the handle portion and is inserted into a through hole formed in a surface plate having a hollow wall structure, and a work tool portion extending from the insertion portion. The mounting base forming tool characterized by having an insertion protrusion extending from the distal end portion of the insertion portion and a spatula portion provided at the distal end portion of the insertion protrusion and extending perpendicularly from the distal end portion.