JP3882733B2

JP3882733B2 - Flooring joint structure

Info

Publication number: JP3882733B2
Application number: JP2002297117A
Authority: JP
Inventors: 守男林; 治久稲川; 安彦都丸; 卓也山本
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2002-10-10
Filing date: 2002-10-10
Publication date: 2007-02-21
Anticipated expiration: 2022-10-10
Also published as: JP2004132039A

Description

【０００１】
【発明の属する技術分野】
本発明は、実継ぎ接合される床材接合構造に関するものである。
【０００２】
【従来の技術】
従来、隣接して敷設された床材の継ぎ目部をいわゆる実継ぎ接合し、その雄実を釘打ちで床下地材に固定したものがある（例えば、特許文献１参照。）。
【０００３】
【特許文献１】
特開平４−３６０４２号公報（第１頁、図１）
【０００４】
【発明が解決しようとする課題】
特許文献１の床材接合構造は、雄実部と雌実部のそれぞれの木口面は垂直で互いに突き合わせ接合であったから、該突き合わせ部にゴミが入った場合該ゴミ噛みの為にその継ぎ目部に隙間が生じ易かった。又、雄実部は釘で床下地材に固定されるものであったが、該釘は傾斜して打ち込まれるので、その傾斜角度が緩すぎると釘頭が４５度以上に傾き該釘頭が床材表面に凸部をつくるという問題があった。一方本願の図４に示す如く、釘頭が隠れるような溝１１を雄実２の上面根元部に形成した床材接合構造が考えられるが、この場合においても釘９の打ち込み傾斜角度が安定せず、釘９が４５度以上に傾斜した状態で打ち込まれ易く、床材１の床下地材１０への固定強度にばらつきが生じやすかった。本発明は実継ぎ接合された床材の継ぎ目部に隙間が生じにくく、雄実部を固定するための釘の打ち込み傾斜角度を４５以上に維持しながら簡単に打ち込むことのできる床材接合構造を提供することを課題とする。
【０００５】
【課題を解決するための手段】
本発明は、上記課題を解決するために、次のような技術的手段を講じている。すなわち、請求項１記載の発明は、隣接して敷設された床材の相対向する端面に、互いに嵌合する雄実と雌実とを設けた床材接合構造において、雄実の上側木口面を雄実に向かって下り勾配となる上向き傾斜面とし、雌実の上側木口面を床表面に向かって上り勾配となる下向き傾斜面とし、該雄実と雌実とが実継ぎ接合されたとき該上向き傾斜面の上縁部と下向き傾斜面の上縁部とが互いに圧接するよう該上向き傾斜面の傾斜角度よりも該下向き傾斜面の傾斜角度を小さくして同圧接部位の下方に三角形状の隙間が生じるようになし、上記上向き傾斜面と雄実の上側根元部に形成した雄実根元部傾斜面とで上記三角形状の隙間に連通するＶ字溝を形成したことを特徴とする床材接合構造である。このような構成により、雄実と雌実とが実継ぎ接合されたとき上向き傾斜面の上縁部と下向き傾斜面の上縁部とが互いに圧接するので、床材の実継ぎ接合部の寸法誤差をよく吸収しその継ぎ目部に隙間が生じにくいとともに、万一該上向き傾斜面と下向き傾斜面との間にゴミ等が付着していた場合でも該ゴミ噛みによる隙間が生じにくいのである。
【０００６】
請求項２記載の発明は、請求項１記載の床材接合構造において、Ｖ字溝を形成する雄実根元部傾斜面の傾斜角度を略４５度以上にした床材接合構造である。このような構成により、雄実根元部を釘で床下地材に固定するとき、該雄実根元部傾斜面をガイドとして釘を４５度以上の傾斜角度で打ち込み易くなり、従って、釘頭の傾斜が緩やかになり且つ釘頭がＶ字溝内に収納されるので、床材表面に凸部が発生しにくいのである。又、雄実の床下地材への固定強度も安定するのである。
【０００７】
請求項３記載の発明は、請求項２記載の床材接合構造において、上向き傾斜面の傾斜角度を略６５度にした床材接合構造である。このような構成により、Ｖ字溝の角度は７０度になり、釘の打ち込み許容傾斜角度は４５度から１１５度までの範囲となり、釘の打ち込み傾斜角度を４５度以上に保持した状態での該釘打ち込み作業が簡単になる。
【０００８】
又、請求項４記載の発明は、請求項１記載の床材接合構造において、雄実の雄実下側木口面を略垂直面の状態で、雄実の上側根元部よりもやや雄実先端面寄りに、位置させた床材接合構造である。このような構成により、雄実の雌実に対する差し込み量小さくなり実継ぎ接合作業が容易となるとともに、雄実の根元部が上下方向に一致している場合に比較して雄実の強度が向上するのである。
【０００９】
更に、請求項５記載の発明は、請求項４記載の床材接合構造において、雄実と雌実とが実継ぎ接合されたとき、雄実下側木口面を雌実下側木口面に対向させた床材接合構造である。このような構成により、万一、床材が吸湿膨張してその継ぎ目部が互いに押圧して、該上向き傾斜面を下向き傾斜面が滑り上がろうとしても、略垂直面の雄実下側木口面と雌実下側木口面とが直ちに当接するので、該継ぎ目部が盛り上りにくいのである。
【００１０】
【発明の実施の形態】
以下、本発明の好ましい実施の形態について、図面を参照してより詳細に説明する。図１は本発明の床材接合構造に係る床材を示す一部切欠斜視図、図２は上記床材の接合状態を示す部分拡大断面図、図３は上記床材の接合端部を示す部分拡大分解側面図である。図１に示す如く、床材１はその両側の接合端面に雄実２と雌実３とが形成されている。雄実２の上側木口面は雄実２の先端面２２に向かって下り勾配となる上向き傾斜面４が形成され、該上向き傾斜面４と相対向する下向き傾斜面５が、雌実３の上側木口面に形成されており、該下向き傾斜面５は床表面に向かって上り勾配となっている。７は雄実下側木口面、８は雌実下側木口面であり、雄実下側木口面７及び雌実下側木口面８は垂直な面となっている。９は釘、１０は床下地材、１２は面取り部である。
【００１１】
実施例において、雄実２の上向き傾斜面４の傾斜角度αは６５度、雄実根元部傾斜面２１の傾斜角度γは４５度であり、Ｖ字溝６の角度は７０度である。従って、釘９の打ち込み許容傾斜角度は４５度から１１５度までの範囲となり、釘の打ち込み傾斜角度を４５度以上に保持した状態での該釘打ち込み作業が簡単になっている。又、雌実３の下向き傾斜面５の傾斜角度βを６０度とし上向き傾斜面４の傾斜角度６５度よりも小さくしている。図３において、Ａは６ｍｍ、Ｂは７ｍｍ、Ｃは３ｍｍ、Ｄは３．５ｍｍ、Ｅは４．１ｍｍ、Ｆは４ｍｍ、Ｇは５ｍｍ、Ｈは５．２ｍｍ、Ｖ字溝６の深さＪは１ｍｍ、床材２の厚みＴは１２ｍｍである。
【００１２】
図２に示す如く、床材１を床下地材１０に敷設した状態では、釘９は４５度の傾斜角度で雄実根元部傾斜面２１の傾斜角度４５度に沿ってＶ字溝６の底部から床下地材１０に打ち込まれている。雄実２側の上向き傾斜面４の上縁部に雌実３側の下向き傾斜面５の上縁部が圧接し、その下方に三角形状の隙間Ｓが生じている。該隙間ＳはＶ字溝６に連通している。該三角形の隙間Ｓにゴミ等が介在している場合でも、継ぎ目部表面に隙間ができないようになっている。該継ぎ目部には面取り部１２、１２で構成されるＶ溝目地が形成されている。該Ｖ溝目地が多少開いても、上向き傾斜面４が存在するのでＶ溝目地の深さはあまり大きくならず気にならないようになっている。雄実２の先端面２２は雌実３の底部に対して僅かな隙間がり、同様に、雄実下側木口面７と雌実下側木口面８との間にも僅かな隙間が生じている。若し、床材１、１が吸湿効果により膨張したとき雄実下側木口面７と雌実下側木口面８とが直ちに当接するので、上向き傾斜面４に対し下向き傾斜面５が僅かに滑り上がるだけで、該継ぎ目部が極端に盛り上るということはない。
【００１３】
【発明の効果】
以上述べたように、請求項１記載の発明は、雄実２の上側木口面を雄実２に向かって下り勾配となる上向き傾斜面４とし、雌実３の上側木口面を床表面に向かって上り勾配となる下向き傾斜面５とし、該雄実２と雌実３とが実継ぎ接合されたとき該上向き傾斜面４の上縁部と下向き傾斜面５の上縁部とが互いに圧接するよう該上向き傾斜面４の傾斜角度αよりも該下向き傾斜面５の傾斜角度βを小さくして同圧接部位の下方に三角形状の隙間Ｓが生じるようになし、上記上向き傾斜面４と雄実２の上側根元部に形成した雄実根元部傾斜面２１とで上記三角形状の隙間Ｓに連通するＶ字溝６を形成したから、雄実２と雌実３とが実継ぎ接合されたとき上向き傾斜面４の上縁部と下向き傾斜面５の上縁部とが互いに圧接するので、床材１の実継ぎ接合部の寸法誤差をよく吸収しその継ぎ目部表面に隙間が生じにくいとともに、万一該上向き傾斜面４と下向き傾斜面５との間にゴミ等が付着していた場合でも該ゴミ噛みによる隙間が生じにくいのである。
【００１４】
請求項２記載の発明は、請求項１記載の床材接合構造において、Ｖ字溝６を形成する雄実根元部傾斜面２１の傾斜角度γを略４５度以上にしたから、雄実根元部を釘９で床下地材１０に固定するとき、該雄実根元部傾斜面２１をガイドとして釘９を４５度以上の傾斜角度で打ち込み易くなり、従って、釘頭の傾斜が４５度以上にならず緩やかになり且つ釘頭がＶ字溝６内に収納されるので、床材表面に凸部が発生しにくいのである。又、雄実の床下地材への固定強度も安定するのである。
【００１５】
請求項３記載の発明は、請求項２記載の床材接合構造において、上向き傾斜面４の傾斜角度αを略６５度にしたから、Ｖ字溝６の角度は７０度になり、釘９の打ち込み許容傾斜角度は４５度から１１５度までの範囲となり、釘の打ち込み傾斜角度を４５度以上に保持した状態での釘打ち込み作業が簡単になる。
【００１６】
又、請求項４記載の発明は、請求項１記載の床材接合構造において、雄実２の雄実下側木口面７を略垂直面の状態で、雄実２の上側根元部よりもやや雄実先端面２２寄りに、位置させたから、雄実２の雌実３に対する差し込み量小さくなり実継ぎ接合作業が容易となるとともに、雄実２の根元部が上下方向に一致している場合に比較して雄実２の強度が向上するのである。
【００１７】
更に、請求項５記載の発明は、請求項４記載の床材接合構造において、雄実２と雌実３とが実継ぎ接合されたとき、雄実下側木口面７を雌実下側木口面８に対向させたから、万一、床材１、１が吸湿膨張してその継ぎ目部が互いに押圧し合い、該上向き傾斜面４を下向き傾斜面５が滑り上がろうとしても、略垂直面の雄実下側木口面７と雌実下側木口面８とが直ちに当接するので、該継ぎ目部が盛り上りにくいのである。
【図面の簡単な説明】
【図１】本発明の床材接合構造に係る床材を示す一部切欠斜視図。
【図２】上記床材の接合状態を示す部分拡大断面図。
【図３】上記床材の接合端部を示す部分拡大分解側面図。
【図４】従来例の床材の接合状態を示す部分拡大断面図。
【符号の説明】
１床材
２雄実
２１雄実根元部傾斜面
２２雄実の先端面
３雌実
４雄実側の上向き傾斜面
５雌実側の下向き傾斜面
６Ｖ字溝
７雄実下側木口面
８雌実下側木口面
９釘
１０床下地材
１１従来の溝
１２面取り部
α 上向き傾斜面の傾斜角度
β 下向き傾斜面の傾斜角度
γ 雄実根元部傾斜面の傾斜角度
Ｓ上向き傾斜面と下向き傾斜面との間の三角形状の隙間[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a floor joint structure that is joined by actual joining.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is a type in which seam portions of floor materials laid adjacent to each other are so-called actual joints, and the males are fixed to a floor base material by nailing (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
JP-A-4-36042 (first page, FIG. 1)
[0004]
[Problems to be solved by the invention]
In the floor material joining structure of Patent Document 1, since the end surfaces of the male part and the female part are vertical and are butt-joined to each other, when dust enters the abutting part, the seam part is used to bite the dust. It was easy for gaps to occur. In addition, the male part was fixed to the floor base material with a nail, but the nail is driven at an angle, so if the angle of inclination is too slow, the nail head will tilt more than 45 degrees and the nail head will There was a problem that a convex part was formed on the flooring surface. On the other hand, as shown in FIG. 4 of the present application, a floor material joining structure in which a groove 11 that hides the nail head is formed on the top surface of the male fruit 2 is conceivable. In this case, however, the driving inclination angle of the nail 9 is stabilized. Therefore, the nail 9 was easily driven in a state of being inclined at 45 degrees or more, and the fixing strength of the flooring 1 to the floor base material 10 was likely to vary. The present invention provides a floor material joining structure in which a gap is unlikely to be generated in a joint portion of floor materials joined by actual joint, and can be easily driven while maintaining a driving inclination angle of a nail for fixing a male solid portion to 45 or more. The issue is to provide.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention takes the following technical means. That is, the invention according to claim 1 is a floor material joint structure in which a male and a female that fit each other are provided on opposite end surfaces of a floor material that is laid adjacent to each other. When the male fruit and the female fruit are jointed, the upper end face of the female fruit is the downward inclined surface that is an upward slope toward the floor surface. The downward angle of the inclined surface is smaller than the angle of inclination of the upwardly inclined surface so that the upper edge of the upwardly inclined surface and the upper edge of the downwardly inclined surface are pressed against each other . A floor is formed so that a gap is formed, and a V-shaped groove communicating with the triangular gap is formed by the upward inclined surface and the male root root inclined surface formed at the upper root of the male fruit. It is a material joint structure. With such a configuration, when the male and female are jointed, the upper edge of the upward inclined surface and the upper edge of the downward inclined surface are in pressure contact with each other. The error is absorbed well, and a gap is hardly generated at the joint portion, and even if dust or the like is adhered between the upward inclined surface and the downward inclined surface, a clearance due to the bite of the dust is hardly generated.
[0006]
According to a second aspect of the invention, the flooring joint structure according to claim 1, wherein a flooring joint structure in which the inclination angle of the male real root portion inclined surfaces that form a V-shaped groove than approximately 45 degrees. With such a configuration, when the male root is fixed to the floor base material with a nail, it becomes easy to drive the nail at an inclination angle of 45 degrees or more using the male root root inclined surface as a guide. Since the nail head is housed in the V-shaped groove, a convex portion is hardly generated on the floor material surface. In addition, the fixing strength to the male floor base material is also stabilized.
[0007]
A third aspect of the present invention is the flooring joint structure according to the second aspect, wherein the upward inclined surface has an inclination angle of about 65 degrees. With such a configuration, the angle of the V-shaped groove is 70 degrees, the allowable inclination angle of nail driving is in the range of 45 degrees to 115 degrees, and the nail driving inclination angle is maintained at 45 degrees or more. Nailing operation is simplified.
[0008]
The invention according to claim 4 is the flooring joint structure according to claim 1, wherein the male lower end of the male fruit is in a substantially vertical plane and is slightly more distal than the upper root of the male. It is a flooring joint structure located close to the surface. With such a configuration, the insertion amount of the male and female seeds is reduced, facilitating the joint joining work, and the strength of the male seeds is improved compared to the case where the root parts of the males are aligned vertically. To do.
[0009]
Furthermore, the invention according to claim 5 is the flooring joint structure according to claim 4, wherein when the male and female seeds are jointed, the lower side of the male fruit faces the lower side of the female fruit. It is the floor material junction structure made to do. With such a configuration, even if the floor material absorbs and expands and the joints press against each other, and the downward inclined surface tries to slide up the inclined surface, the substantially lower vertical male end Since the surface and the female bottom lower end face immediately contact each other, the seam portion is difficult to rise.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the drawings. 1 is a partially cutaway perspective view showing a flooring according to the flooring joint structure of the present invention, FIG. 2 is a partially enlarged sectional view showing a joining state of the flooring, and FIG. 3 shows a joining end of the flooring. It is a partial expansion exploded side view. As shown in FIG. 1, the flooring 1 is formed with male seeds 2 and female seeds 3 on the joint end faces on both sides thereof. The upper end face of the male fruit 2 is formed with an upward inclined surface 4 that is downwardly inclined toward the distal end surface 22 of the male fruit 2, and the downward inclined surface 5 opposite to the upward inclined surface 4 is the upper surface of the female fruit 3. The downward inclined surface 5 is formed on the end of the tree and is inclined upward toward the floor surface. Reference numeral 7 denotes a male lower lower end, and 8 denotes a female lower lower end. The male lower lower end 7 and the female lower lower end 8 are vertical surfaces. 9 is a nail, 10 is a floor base material, and 12 is a chamfer.
[0011]
In the embodiment, the inclination angle α of the upward inclined surface 4 of the male 2 is 65 degrees, the inclination angle γ of the male root inclined face 21 is 45 degrees, and the angle of the V-shaped groove 6 is 70 degrees. Therefore, the allowable inclination angle for driving the nail 9 is in a range from 45 degrees to 115 degrees, and the nail driving operation with the nail driving inclination angle maintained at 45 degrees or more is simplified. In addition, the inclination angle β of the downward inclined surface 5 of the female fruit 3 is 60 degrees, which is smaller than the inclination angle 65 degrees of the upward inclined surface 4. In FIG. 3, A is 6 mm, B is 7 mm, C is 3 mm, D is 3.5 mm, E is 4.1 mm, F is 4 mm, G is 5 mm, H is 5.2 mm, depth J of the V-shaped groove 6 Is 1 mm, and the thickness T of the flooring 2 is 12 mm.
[0012]
As shown in FIG. 2, when the flooring 1 is laid on the floor base material 10, the nail 9 is at the bottom of the V-shaped groove 6 along the inclination angle 45 degrees of the male root inclined surface 21 at an inclination angle of 45 degrees. To the floor base material 10. The upper edge of the downward inclined surface 5 on the female fruit 3 side is in pressure contact with the upper edge of the upward inclined surface 4 on the male fruit 2 side, and a triangular gap S is formed below the upper edge. The gap S communicates with the V-shaped groove 6. Even when dust or the like is present in the triangular gap S, there is no gap on the joint surface. A V-groove joint composed of chamfered portions 12 and 12 is formed in the joint portion. Even if the V-groove joint is slightly opened, the upward inclined surface 4 exists, so that the depth of the V-groove joint is not so large and is not a concern. The front end surface 22 of the male fruit 2 has a slight gap with respect to the bottom of the female fruit 3, and similarly, a slight gap is generated between the male fruit lower end face 7 and the female fruit lower end face 8. Yes. When the flooring materials 1 and 1 are expanded by the moisture absorption effect, the male lower bottom face 7 and the female lower bottom face 8 immediately come into contact with each other. Simply sliding up does not cause the seam portion to rise extremely.
[0013]
【The invention's effect】
As described above, in the invention described in claim 1, the upper end surface of the male fruit 2 is the upward inclined surface 4 that is inclined downward toward the male body 2, and the upper end surface of the female fruit 3 is directed to the floor surface. When the male fruit 2 and the female fruit 3 are joint-joined, the upper edge portion of the upward inclined surface 4 and the upper edge portion of the downward inclined surface 5 are in pressure contact with each other. Thus, the inclination angle β of the downward inclined surface 5 is made smaller than the inclination angle α of the upward inclined surface 4 so that a triangular gap S is formed below the same pressure contact portion. Since the V-shaped groove 6 that communicates with the triangular gap S is formed by the male base root inclined surface 21 formed at the upper base section of No. 2, when the male seed 2 and the female seed 3 are joined by actual joining Since the upper edge of the upward inclined surface 4 and the upper edge of the downward inclined surface 5 are in pressure contact with each other, the actual joint of the flooring 1 The dimensional error of the joint portion is well absorbed and a gap is not easily formed on the surface of the joint portion. Even if dust or the like is adhered between the upward inclined surface 4 and the downward inclined surface 5, the clearance due to the dust biting Is unlikely to occur.
[0014]
According to a second aspect of the invention, wherein the flooring joint structure in claim 1, since the inclination angle γ of the V-shaped groove 6 you formed male real root portion inclined surface 21 above substantially 45 degrees, Omi root When the portion is fixed to the floor base material 10 with the nail 9, it becomes easy to drive the nail 9 at an inclination angle of 45 degrees or more using the male root inclined surface 21 as a guide, and therefore, the inclination of the nail head becomes 45 degrees or more. However, since the nail head is accommodated in the V-shaped groove 6, the convex portion is hardly generated on the floor material surface. In addition, the fixing strength to the male floor base material is also stabilized.
[0015]
In the invention according to claim 3, in the flooring joint structure according to claim 2, since the inclination angle α of the upward inclined surface 4 is set to approximately 65 degrees, the angle of the V-shaped groove 6 becomes 70 degrees, The allowable driving inclination angle is in a range from 45 degrees to 115 degrees, and the nail driving operation in a state where the driving inclination angle of the nail is maintained at 45 degrees or more is simplified.
[0016]
The invention according to claim 4 is the flooring joint structure according to claim 1, wherein the lower bottom end 7 of the male 2 is in a substantially vertical plane and is slightly higher than the upper root of the male 2. Since it is positioned closer to the male end face 22, the insertion amount of the male 2 into the female 3 is reduced, and the joint joining operation is facilitated, and the root of the male 2 is aligned vertically. In comparison, the strength of the male fruit 2 is improved.
[0017]
Furthermore, the invention according to claim 5 is the floor material joint structure according to claim 4, wherein when the male fruit 2 and the female fruit 3 are jointed to each other, the male lower lower lip face 7 is changed to the female lower lower lip. Even if the flooring materials 1 and 1 are hygroscopically expanded and their seams are pressed against each other and the upwardly inclined surface 4 is caused to slide down the downwardly inclined surface 5, the substantially vertical surface is obtained. The male lower side lip face 7 and the female lower side lip face 8 immediately come into contact with each other, so that the joint portion is difficult to rise.
[Brief description of the drawings]
FIG. 1 is a partially cutaway perspective view showing a flooring according to a flooring joint structure of the present invention.
FIG. 2 is a partially enlarged cross-sectional view showing a joined state of the flooring.
FIG. 3 is a partially enlarged exploded side view showing a joining end portion of the flooring.
FIG. 4 is a partially enlarged cross-sectional view showing a joining state of floor materials of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Floor material 2 Male seed 21 Male root base inclined surface 22 Male seed front end surface 3 Female seed 4 Male fruit side upward inclined surface 5 Female fruit side downward inclined surface 6 V-shaped groove 7 Male fruit lower side mouth end 8 Female bottom lower face 9 Nail 10 Floor base material 11 Conventional groove 12 Chamfered portion α Inclined angle of upward inclined surface β Inclined angle of downward inclined surface γ Inclined angle of male root base inclined surface S Inclined upward and downward inclined surface Triangular gap between faces

Claims

In the flooring joint structure in which the opposite ends of the flooring laid adjacent to each other are provided with a male and a female that fit together, the upper upper end of the male is downwardly inclined toward the male An inclined surface, and the upper end of the female fruit is a downwardly inclined surface that is upwardly inclined toward the floor surface, and when the male fruit and the female fruit are joint-joined, the upper edge of the upwardly inclined surface and the downwardly inclined surface Inclination angle of the downward inclined surface is made smaller than the inclination angle of the upward inclined surface so that the upper edges of the surface are in pressure contact with each other so that a triangular gap is formed below the pressure contact portion, and the upward inclination A flooring joint structure characterized in that a V-shaped groove communicating with the triangular gap is formed by a surface and a male base root inclined surface formed at an upper base section of the male seed .

Flooring joint structure according to claim 1, wherein the inclination angle of the male real root portion inclined surfaces that form a top Symbol V-shaped groove than approximately 45 degrees.

The floor joint structure according to claim 2, wherein an inclination angle of the upward inclined surface is approximately 65 degrees.

The floor material joining structure according to claim 1, wherein the lower end of the male fruit is positioned in a substantially vertical plane and slightly closer to the male front end surface than the upper root of the male fruit.

The floor material joining structure according to claim 4, wherein when the male fruit and the female fruit are joint-joined, the lower side of the male fruit is opposed to the lower face of the female fruit.