Joining method and joining structure

Abstract

The challenge is to eliminate the gaps that occur between adjacent wooden panels. [Solution] After arranging floor panels 10 and 10B so that the frame 11A of floor panel 10A is adjacent to the frame 11B of floor panel 10B, the pulling screws 40 are inserted at an angle into the facing material 20A attached to the frame 11A, and the pulling screws 40 are inserted into the holes 21A formed in the facing material 20A toward the frame 11A, and the pulling screws 40 are driven into the frame 11A and frame 11B from the inside of the frame 11A, thereby pulling the frame 11A and frame 11B toward each other.

Description

Technical Field

[0001] The present invention relates to a joining method and a joining structure.

Background Art

[0002] Patent Document 1 discloses a technique in which a screw nail is passed through a surface material and a frame material of a floor panel from the upper surface of the floor panel and driven obliquely until it reaches the half-body insertion. Patent Document 1 discloses a technique in which a draw screw is horizontally screwed from the side of the frame material until it reaches the upper half-body insertion.

[0003] Patent Document 2 discloses a technique for joining end faces of adjacent floor panels with an adhesive. A female member is provided on the end face of one floor panel, and a male member is provided on the end face of the other floor panel, and these female and male members are engaged.

[0004] When joining adjacent floor panels with an adhesive, a gap is generated between those floor panels so as to open downward due to the weight of the floor panels.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] The problem to be solved by the present invention is to eliminate the gap generated between adjacent wooden panels.

Means for Solving the Problems

[0007] The reference numerals shown in the following parentheses are referred to in FIGS. 1 to 4.

[0008] To solve the above problems, according to claim 1, A method for joining a first wood panel (10A) and a second wood panel (10B), After arranging the first wood panel (10A) and the second wood panel (10B) such that the first frame (11A) of the first wood panel (10A) is adjacent to the second frame (11B) of the second wood panel (10B), The pull screws (40) are inserted diagonally into the first face material (20A) of the first wooden panel (10A) attached to the first frame (11A), and the pull screws (40) are inserted into the holes (21A) formed in the first face material (20A) and located on the inside of the first frame (11A) and toward the first frame (11A), and the pull screws (40) are driven into the first frame (11A) and the second frame (11B) from the inside of the first frame (11A), thereby pulling the first frame (11A) and the second frame (11B) toward each other. A joining method characterized by the above is provided.

[0009] According to claim 1 as described above, the pull-in screws (40) are inserted into the holes (21A) of the first panel (20A), and the pull-in screws (40) are driven into the first frame (11A) and the second frame (11B) from the inside of the first frame (11A), thereby pulling the first frame (11A) and the second frame (11B) closer together, and thus eliminating the gap between adjacent wooden panels (10A, 10B). Since a hole (21A) is formed in the first facing material (20A) of the first wood panel (10A), the gap between adjacent wood panels (10A, 10B) can be pulled together and eliminated with a screw (40) without having to go around to the back of the first facing material (20A). Even if a gap opens between adjacent wood panels (10A, 10B) towards the opposite side of the first facing material (20A) before driving in the pull-in screws (40), the gap can be easily closed by driving the pull-in screws (40) at an angle to the first facing material (20A) of the first wood panel (10A).

[0010] According to claim 2, A joining method according to claim 1, The aforementioned pull-in screw (40) Head (41) and, A shaft portion (42) is provided coaxially with the head portion (41), The shaft portion (42) has a first thread (43) and a second thread (44) formed on its outer circumference, which are arranged sequentially from the tip of the shaft portion (42) toward the head (41), The shaft portion (42) has a threadless portion (45) formed on its outer circumference between the first thread (43) and the second thread (44), The lead of the first thread (43) is smaller than the lead of the second thread (44), When driving in the pull-in screw (40), the tip of the shaft portion (42) is directed from the hole (21A) toward the first frame (11A). A joining method characterized by the above is provided.

[0011] According to claim 2 as described above, when the second thread (44) reaches the first frame (11A) by driving in the pull screw (40), the lead of the first thread (43) is smaller than the lead of the second thread (44), so the pull screw (40) advances relatively faster with respect to the first frame (11A), and the pull screw (40) 2 Frame (11 B It moves relatively slowly compared to ). As a result, the gap between adjacent wood panels (10A, 10B) is eliminated. According to claim 3, the joining method according to claim 1 or 2 is provided, characterized in that the hole (21A) faces an internal space defined by the first frame (11A) and the first facing material (20A) at a position offset inward from the first frame (11A).

[0012] Claim 4 According to A joining method according to claim 1, The second pulling screw (40) is obliquely inserted into the second face material (20B) of the second wood panel (10B) attached to the second frame body (11B). The second hole (21B) is formed in the second face material (20B) and is close to the second frame body (11B) inside the second frame body (11B). Then, the second pulling screw (40) is inserted into the second hole (21B) and driven from the inside of the second frame body (11B) into the second frame body (11B) and the first frame body (11A), so as to pull the first frame body (11A) and the second frame body (11B) closer to each other. A joining method characterized by this is provided.

[0013] According to the above claims 4 The gap between the adjacent wood panels (10A, 10B) is also eliminated by the second pulling screw (40). Claim 5 provides a joining method according to Claim 4, wherein the second pull screw (40) has a head, a shaft portion provided coaxially with the head, a first thread and a second thread formed on the outer circumference of the shaft portion and arranged sequentially from the tip of the shaft portion toward the head, and an unthreaded portion formed on the outer circumference of the shaft portion between the first thread and the second thread, wherein the lead of the first thread is smaller than the lead of the second thread, and when driving in the second pull screw, the tip of the shaft portion is directed toward the second frame from the second hole.

[0014] According to the claims 6 According to this A joining method according to claim 1 or 2, After arranging the first wood panel (10A) and the second wood panel (10B) and before driving the pulling screw (40), the fastener (61) is driven into the first face material (20A), the first frame body (11A) and the second frame body (11B) at an oblique angle with respect to the first face material (20A). A joining method characterized by this is provided.

[0015] According to the above claims 6 According to this, by driving the fastener (61) into the first face material (20A), the first frame body (11A) and the second frame body (11B) at an oblique angle with respect to the first face material (20A), the postures of the first wood panel (10A) and the second wood panel (10B) are stabilized when driving the pulling screw (40), so it is easy to drive the pulling screw (40).

[0016] According to the claims 7 According to this A joining method according to claim 1 or 2, The first wooden panel (10A) and the second wooden panel (10B) are floor panels, and the location on which the first wooden panel (10A) and the second wooden panel (10B) are placed is on the foundation. A joining method characterized by the above is provided.

[0017] The above Claim 7 According to the documentation, the gap between adjacent wooden panels (10A, 10B) tends to widen downwards due to the weight of these panels, but this gap can be closed by pulling them together and driving in screws (40).

[0018] Claim 8 According to A first wood panel (10A) having a first frame (11A) and a first facing material (20A) attached to the first frame (11A), A second wooden panel (10B) having a second frame (11B) and a second facing material (20B) attached to the second frame (11B), Equipped with a pull-in screw (40), The first frame (11A) and the second frame (11B) are arranged adjacent to each other. The pull-in screws (40) are driven into the first frame (11A) and the second frame (11B) from the inside of the first frame (11A) while the pull-in screws (40) are in an oblique position relative to the first surface material (20A). A hole (21A) is formed in the first surface material (20A) on the inside of the first frame (11A), closer to the first frame (11A). The aforementioned hole (21A) is positioned at a location that extends the pull screw (40) in the axial direction. A joining structure characterized by the above is provided. According to claim 9, a joining structure is provided, characterized in that the hole (21A) faces an internal space defined by the first frame (11A) and the first facing material (20A) at a position offset inward from the first frame (11A).

[0019] Claim 10 According to Claim 8 or 9 The joint structure described above, The aforementioned pull-in screw (40) Head (41) and, A shaft portion (42) is provided coaxially with the head portion (41), The shaft portion (42) has a first thread (43) and a second thread (44) formed on its outer circumference, which are arranged sequentially from the tip of the shaft portion (42) toward the head (41), The shaft portion (42) has a threadless portion (45) formed on its outer circumference between the first thread (43) and the second thread (44), The lead of the first thread (43) is smaller than the lead of the second thread (44), The first thread (43) is driven into the second frame (11B), and the second thread (44) is driven into the first frame (11A). A joining structure characterized by the above is provided. [Effects of the Invention]

[0020] This eliminates the gaps that occur between adjacent wooden panels. [Brief explanation of the drawing]

[0021] [Figure 1] Figure 1 is an exploded perspective view of the floor panel. [Figure 2] Figure 2 is a plan view of the area around the boundary between adjacent floor panels. [Figure 3] Figure 3 is a vertical cross-sectional view of the area around the boundary between adjacent floor panels. [Figure 4] Figure 4 is a vertical cross-sectional view of the area around the boundary between adjacent floor panels. [Modes for carrying out the invention]

[0022] Embodiments will be described below with reference to the drawings. The features and technical effects of the embodiments will be understood from the following detailed description and drawings. However, the scope of the present invention is not limited to the embodiments disclosed below. The scope of the present invention is not limited to the examples in the drawings, as the drawings are provided for illustrative purposes only.

[0023] <1. Floor Panels> Figure 1 is an exploded perspective view of the floor panel 10. This floor panel 10 is used for the first floor of a wooden building with a wall structure assembled by a panel construction method, particularly a wood panel adhesive construction method.

[0024] The floor panel 10 is a type of wood panel. The floor panel 10 has a rectangular frame 11, auxiliary crossbars 17, 18, a facing material 20, insulation material 24, and an anti-termite sheet 26. The frame 11 has four frame members 12-15, which are assembled in a rectangular frame shape. Frame members 12 and 13 are parallel to each other, and frame members 14 and 15 are also parallel to each other, with frame members 12 and 13 being shorter than frame members 14 and 15. Both ends of frame member 14 are joined to one end of frame members 12 and 13, and both ends of frame member 15 are joined to the other end of frame members 12 and 13. The auxiliary crossbars 17 and 18 are incorporated inside the frame 11. The auxiliary support members 17 are parallel to the frame members 12 and 13, with one end of the auxiliary support member 17 joined to the frame member 12 and the other end of the auxiliary support member 17 joined to the frame member 13. Multiple auxiliary support members 18 are parallel to the frame members 14 and 15, with one end of the auxiliary support member 18 joined to the auxiliary support member 17 and the other end of the auxiliary support member 18 joined to the frame member 14 or the frame member 15. The inner area of ​​the frame 11 is divided into multiple rectangular areas by these auxiliary support members 17 and 18. The insulation material 24 is contained within these rectangular areas. The facing material 20 is attached to the front surfaces of the frame 11 and the auxiliary support members 17 and 18 with adhesive, and the termite-resistant sheet 26 is attached to the back surfaces of the frame 11 and the auxiliary support members 17 and 18.

[0025] Multiple holes 21 are formed in the facing material 20. The holes 21 are spaced apart along the edge of the facing material 20. The holes 21 are located inside the inner edge of the frame 11 and are positioned closer to the frame 11. These holes 21 are used to pass through pull screws that join adjacent floor panels 10 together.

[0026] <2. Floor installation and floor panel joining> When constructing the first-floor floor of a wooden building, adhesive is applied to the outer perimeter of the frame 11 of the floor panel 10, and then the floor panel 10 is laid on the foundation with the surface material 20 of the floor panel 10 facing upwards and the termite-resistant sheet 26 of the floor panel 10 facing downwards. Multiple floor panels 10 are laid sequentially on the foundation to cover the entire surface.

[0027] Figure 2 is a plan view of the area around the boundary between adjacent floor panels 10, and Figure 3 is a vertical cross-sectional view of the boundary between adjacent floor panels 10. In the examples shown in Figures 2 and 3, the frame member 14 of floor panel 10 abuts against the frame member 15 of the adjacent floor panel 10. In Figures 2 and 3, the reference numeral A is used for one of the adjacent floor panels 10 and its components, and the reference numeral B is used for the other floor panel 10 and its components.

[0028] When laying the floor panels 10, a gap is created between the frame members 14A and 15B that are abutted by the weight of adjacent floor panels 10A and 10B, and this gap opens downwards at the tip of arrow A in Figure 3. In other words, the frame members 14A and 15B open outwards in a V-shape due to the weight of adjacent floor panels 10A and 10B. To eliminate such gaps, the floor panels 10A and 10B are joined together as follows. Note that the gap that opens downwards occurs in the part that is not supported by the foundation's rising section, post, or girder and is floating.

[0029] After placing the two floor panels 10A and 10B side by side on the foundation, fasteners 31 such as wood screws, bolts, or nails are driven into the frame material 14A from above the surface material 20A. The fasteners 31 are driven at an angle to the surface material 20A, and are driven from the frame material 14A to the frame material 15B of the adjacent floor panel 10B. Similarly, fasteners 32 are driven at an angle to the surface material 10B, and fasteners 32 are driven into the frame materials 15B and 14A from above the surface material 10B.

[0030] Subsequently, a pull screw 40 is used. The pull screw 40 has a head 41, a shaft 42, a first thread 43, a second thread 44, a first unthreaded portion 45, and a second unthreaded portion 46. The head 41 is provided coaxially with respect to the shaft 42 at the base end of the shaft 42, and the head 41 has a larger diameter than the shaft 42. The tip of the shaft 42 is pointed. A cut or blade may be formed on the tip of the shaft 42. The first thread 43 and the second thread 44 are formed on the outer circumference of the shaft 42, and the first thread 43, the first unthreaded portion 45, the second thread 44, and the second unthreaded portion 46 are arranged in order from the tip of the shaft 42 toward the head 41. The lead of the first thread 43 is smaller than the lead of the second thread 44. The first unthreaded portion 45 is the portion on the outer circumference of the shaft 42 between the first thread 43 and the second thread 44 where no threads are formed. The second threadless portion 46 is the portion on the outer circumference of the shaft portion 42 between the second thread 44 and the head 41 where no threads are formed.

[0031] The floor panel 10A is joined to the floor panel 10B using the pull screws 40 as shown below.

[0032] The shaft portion 42 of the pull-in screw 40 is angled relative to the panel material 20A, and the tip of the shaft portion 42 is pointed towards the frame material 14A from above the panel material 20A and inside the frame body 11A. The pull-in screw 40 is inserted into the hole 21A, and the tip of the shaft portion 42 is brought into contact with the frame material 14A. At this time, the shaft portion 42 of the pull-in screw 40 is brought into contact with the part of the edge of the hole 21A on the upper surface of the panel material 20A that is farther from the frame material 14A, and the shaft portion 42 of the pull-in screw 40 is brought into contact with the part of the edge of the hole 21A on the lower surface of the panel material 20A that is closer to the frame material 14A. By bringing the shaft portion 42 into contact with the edge of the hole 21A in this way, the angle of inclination of the shaft portion 42 of the pull-in screw 40 is set appropriately, and the tip of the shaft portion 42 contacts the frame material 14A at the appropriate position. Furthermore, a hole may be formed in the insulation material 24A to guide the shaft portion 42 of the pull screw 40 from the hole 21A to the frame material 14A. This hole penetrates the insulation material 24A diagonally to the surface material 20A from the hole 21A to the frame material 14A.

[0033] Subsequently, when the pull-in screw 40 is rotated with a tool such as an impact driver, the pull-in screw 40 advances axially due to the first thread 43 and is driven into the frame members 14A and 15B. When the entire first thread 43 has advanced to the frame member 15B and the second thread 44 has entered the frame member 14A, the distance the pull-in screw 40 advances relative to the frame member 15B per rotation is shorter than the distance the pull-in screw 40 advances relative to the frame member 14A per rotation. As a result, the frame members 14A and 15B move closer to each other, and the gap between them closes.

[0034] Just before the head 41 hits the frame material 14A, the second thread 44 reaches the boundary between the frame material 14A and the frame material 15B, so the driving of the pull-in screw 40 is stopped. In the state where the driving of the pull-in screw 40 is stopped, the first thread 43 is driven into the frame material 15B and the second thread 44 is driven into the frame material 14A. The hole 21A is positioned at the axial extension of the pull-in screw 40.

[0035] Similarly, the pull screws 40 are driven into the frame members 15B and 14A through the holes 21B in the facing material 20B of the floor panel 10B. These pull screws 40 also contribute to eliminating the gap between adjacent floor panels 10A and 10B. Note that the holes 21B are offset from the holes 21A in a direction along the boundary line between the facing materials 20A and 20B.

[0036] As mentioned above, the process of driving in the fasteners 31, 32 and the pull screws 40 is carried out before the adhesive between the frame material 14A and the frame material 15B hardens.

[0037] <3. Variant Example> (1) The floor panels 10 may be used for the floors of floors two or higher, and when constructing the floors of floors two or higher, adjacent floor panels 10 may be pulled together and joined with screws 40. In this case, the termite-resistant sheet 26B is not attached.

[0038] (2) In the above description, the wooden panels joined by the pull screws 40 are the floor panels 10. In the same way that adjacent floor panels 10 are joined using the pull screws 40, adjacent wall panels may also be joined using the pull screws 40. Of course, holes for passing the pull screws 40 are formed in the surface material of the wall panels.

[0039] <4. Summary> (1) By inserting the pull screws 40 into the holes 21 in the facing material 20 and driving the pull screws 40 into adjacent frame bodies 11 from the inside of the frame body 11, these frame bodies 11 are pulled together, thereby eliminating the gap between adjacent floor panels 10.

[0040] (2) Since holes 21 are formed in the surface material 20 of the floor panel 10, the gap between adjacent floor panels 10 can be eliminated by pulling screws 40 without having to go under the floor panel 10. There is no need to remove the termite-resistant sheet 26. For this reason, joining adjacent floor panels 10 using pulling screws 40 is suitable for the construction of the first floor.

[0041] (3) Because the direction in which the pull screws 40 are driven is oblique to the surface material 20, the gap that opens up in a V-shape can be easily eliminated by driving in the pull screws 40.

[0042] (4) When the pull screw 40 is driven from the frame member 14A toward the frame member 15B, once the second thread 44 reaches the frame member 14A, the pull screw 40 advances relatively faster relative to the frame member 14A and relatively slower relative to the frame member 15B. This is because the lead of the first thread 43 is smaller than the lead of the second thread 44. This irregular lead of the pull screw 40 contributes to eliminating the gap between adjacent wooden panels 10A and 10B.

[0043] (5) By driving the fasteners 61 and 62 into the frame 11 adjacent to the surface material 20 at an oblique angle to the surface material 20, the position of the floor panel 10 is stabilized when driving in the pull screws 40, making it easier to drive in the pull screws 40.

[0044] (6) The energy used from the production to the disposal of wood is less than the energy used from the production to the disposal of metal or concrete materials. Therefore, since the raw material for the floor panel 10 is wood, and the building using it is made of wood, the floor panel 10 and the building contribute to the realization of a decarbonized society by promoting carbon neutrality, which makes carbon dioxide emissions virtually zero, and to the achievement of the Sustainable Development Goals (SDGs).

[0045] (7) The embodiments disclosed herein are for illustrative purposes only and are not intended to limit the scope of the invention. The scope of the invention should be interpreted by the terms of the claims. [Explanation of Symbols]

[0046] 10A Floor Panel (First Wood Panel) 11A 1st frame 20A First facing material 21A 1st hole 10B Floor Panel (Second Wood Panel) 11B 2nd frame 20B Second facing material 21B 2nd hole 31 Fasteners 40 Attraction Screws 41 Head 42 Shaft section 43 First thread 44 Second thread 45 First threadless section 46 Second threadless section

Claims

1. A method for joining a first wood panel and a second wood panel, After arranging the first and second wooden panels so that the first frame of the first wooden panel is adjacent to the second frame of the second wooden panel, The first wooden panel attached to the first frame is fitted with a pull screw at an angle, and the pull screw is inserted into the hole formed in the first wooden panel and located on the inside of the first frame, toward the first frame, and the pull screw is driven into the first frame and the second frame from the inside of the first frame, thereby pulling the first frame and the second frame together. A joining method characterized by the above.

2. A joining method according to claim 1, The aforementioned pull-in screw, The head and A shaft portion provided coaxially with the head, The outer circumference of the shaft portion is formed, and the first and second threads are arranged sequentially from the tip of the shaft portion toward the head portion, It has a threadless portion formed on the outer circumference of the shaft portion between the first thread and the second thread, The lead of the first thread is smaller than the lead of the second thread. When driving in the aforementioned pull-in screw, the tip of the shaft portion is directed out of the hole towards the first frame. A joining method characterized by the above.

3. The hole faces an internal space defined by the first frame and the first facing material, at a position offset inward from the first frame. The joining method according to feature 1 or 2.

4. A joining method according to claim 1, The second pulling screw is inserted at an angle into the second facing material of the second wooden panel attached to the second frame, through the second hole formed in the second facing material and located on the inside of the second frame, toward the inside of the second frame, and the second pulling screw is driven into the second frame and the first frame from the inside of the second frame, thereby pulling the first frame and the second frame together. A joining method characterized by the above.

5. The joining method according to claim 4, The aforementioned second tensioning screw, The head and A shaft portion provided coaxially with the head, The outer circumference of the shaft portion is formed, and the first and second threads are arranged sequentially from the tip of the shaft portion toward the head portion, It has a threadless portion formed on the outer circumference of the shaft portion between the first thread and the second thread, The lead of the first thread is smaller than the lead of the second thread. When driving in the second pull screw, the tip of the shaft portion is directed from the second hole towards the second frame. A joining method characterized by the above.

6. A joining method according to claim 1 or 2, After the first and second wooden panels are positioned and before the fastening screws are driven in, the fasteners are driven into the first panel, the first frame, and the second frame at an oblique angle to the first panel. A joining method characterized by the above.

7. A joining method according to claim 1 or 2, The first and second wooden panels are floor panels, and the locations on which the first and second wooden panels are placed are on the foundation. A joining method characterized by the above.

8. A first wooden panel having a first frame and a first facing material attached to the first frame, A second wooden panel having a second frame and a second facing material attached to the second frame, Equipped with a pull-in screw, The first frame and the second frame are arranged adjacent to each other. The pull-in screws are driven into the first frame and the second frame from the inside of the first frame, with the pull-in screws positioned at an angle to the first surface material. A hole is formed in the first surface material on the inside of the first frame, closer to the first frame. The aforementioned hole is positioned at a location where the pull-in screw is extended in the axial direction. A joint structure characterized by the following features.

9. The joining structure according to claim 8, The aforementioned hole faces the internal space defined by the first frame and the first facing material, at a position offset inward from the first frame. A joint structure characterized by the following features.

10. A joining structure according to claim 8 or 9, The aforementioned pull-in screw, The head and A shaft portion provided coaxially with the head, The outer circumference of the shaft portion is formed, and the first and second threads are arranged sequentially from the tip of the shaft portion toward the head portion, It has a threadless portion formed on the outer circumference of the shaft portion between the first thread and the second thread, The lead of the first thread is smaller than the lead of the second thread. The first thread is driven into the second frame, and the second thread is driven into the first frame. A joint structure characterized by the following features.

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