JP2003239921A - Joining structure by tenon and mortise - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joining structure by a tenon and a mortise, while provided with a function and effect of a dovetail tenon having superior appearance and easy plugging. <P>SOLUTION: In the joining structure, the tenon 1 provided on a first member 10 is fitted and joined with the mortise 2 provided on a second member 20. The tenon 1 has a substantially U-shaped cross section, and one edge of the cross section forms a first inclined edge 1a inclined outward toward a tip face from a base of the tenon to the first member 1. The mortise 2 forms a cross section shaped more wider than the cross section of the tenon 1, and it has a second inclined edge 2a conforming to the first inclined edge 1a. A position holding member 30 is attached to the first member 10 or the second member 20 so that the first inclined edge 1a constantly abuts on the second inclined edge 2a when the tenon 1 is fitted in the mortise 2. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tenon and tenon joint structure for joining members such as wood and stone.

[0002]

2. Description of the Related Art As is well known, furniture, buildings, etc. are assembled by joining a plurality of members made of wood, stone, iron, etc., but joining members such as paulownia and cedar that are greatly deformed by temperature changes. In this case, if a metal fitting such as a screw or a nail is used, the metal fitting may be deformed due to a temperature change. Further, even if the members are suitable for joining with metal fittings, there is a problem in that it is difficult to align the respective members when joining them.

In order to solve the above-mentioned problem, there is a joining structure using a tenon and a tenon. In this structure, one member has a projecting tenon and the other member has a concave tenon for receiving the tenon. Both members are joined by inserting the tenon into the tenon. There are various types of this joining method according to the purpose of use, the state of use, and the like, such as long tenon, fan tenon, and ant tenon. Long tenons, fan tenons, etc., are those in which tenons are inserted and joined from the direction perpendicular to the surface on which the tenon is provided, and it is possible to prevent positional displacement, but it is a structure that can be easily removed. In order to prevent this omission, an ant tenon whose two sides of the tenon are spread in a V shape is used. The joining with the dovetail is a structure in which the tenon is inserted from the tangential direction of the surface on which the mortise is provided and the joining is performed, and the displacement and the dropout are prevented.

[0004]

However, this ant tenon joint is inferior in appearance because a part of the tenon is visible after the tenon is inserted into the tenon and the members are joined together. There is a problem that it cannot be plugged in.
In view of this problem, the present invention provides a joining structure using tenons and mortises, which has the function and effect of an ant tenon, is excellent in aesthetics, and is easy to insert.

[0005]

According to the tenon and tenon joint structure of the present invention, the tenon provided on the first member has a substantially U-shaped cross section, and one side of the cross section is First tenon
1st inclined outward from the base of the member toward the tip surface
It forms an inclined side, and the mortise provided in the second member
A cross section formed to be wider than the cross section of the tenon, and having a second slanted side adapted to the first slanted side, wherein the first slanted side is the second slanted side when the tenon is fitted into the tenon hole. It is characterized in that a position holding member is attached to the first member or the second member so as to be always in contact with the side.

A preferred embodiment is characterized in that the position holding member can be removed by applying an adhesive to the tenon or mortise and joining and fixing the first member and the second member.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a perspective view of an embodiment of the present invention. As shown in FIG. 1, a projecting tenon 1 provided on a first member 10 and a concave tenon 2 provided on a second member 20. The tenon 1 is fitted into the tenon 2 to join the first and second members 10 and 20 together.

FIG. 2 is a sectional view corresponding to FIG. 1. As shown in this figure, the tenon 1 is provided at the center of the end of the first member 10, and the cross section is substantially U-shaped. The side (hereinafter referred to as the first inclined side) 1a on one side is inclined outward, and the side (hereinafter referred to as the first vertical side) 1b on the other side.
Is perpendicular to the end face of the first member 10. The mortise 2 has a concave shape adapted to the shape of the mortise 1, and has a second inclined side 2a corresponding to the above-mentioned first inclined side 1a, and the side facing the surface of the second member 20. It is a second vertical side 2b that is perpendicular to.

Further, the shape will be described in detail. The second inclined side 2a has the same angle and the same length as the first inclined side 1b, and the bottom side of the mortise 2 (hereinafter referred to as the second bottom side) 2c. Is longer than the bottom side (hereinafter referred to as the first bottom side) 1c of the tenon 1 and shorter than the total length of the first bottom side 1c and one side 10a of the end face of the first member 10. Then, the position holding member 30 is attached to the second member 20, and the attachment position is apart from the second vertical side 2b by the distance 20a, and the total length of the distance 20a and the second bottom side 2c is
It is equal to the total length of the first base 1c and the one side 10a of the first member 10.

Next, description will be made with reference to FIG. FIG. 3 shows an explanatory view when joining the tenon and the tenon. First, as shown in A, the tenon 1 is positioned on the tenon 2, and then, as shown in B, the tenon 1 is tilted with respect to the second member 20, and the tenon 1 is moved to the tenon 2. The first and second members are joined by fitting the tenon 1 into the mortise 2 by positioning the first member 10 vertically, as shown in C.

As described above, the first inclined side 1a and the second inclined side 2a are always in contact with each other in the state where the tenon 1 and the mortise 2 are joined, and the position holding member 30 positions the first member 10 in position. Fix it. At that time, by applying an adhesive to the side where the first member 10 and the second member 20 are in contact with each other, it is possible to firmly bond and fix them.

The first vertical side 1b may be inclined with respect to the end face of the first member 10 or may be curved. Further, the first and second inclined sides 1a and 2a may be curved instead of being straight.

4A and 4B show an embodiment in which this joining structure is used for a desk, where A is a perspective view seen from above and B is a perspective view seen from below. In this embodiment, the second member 20 functions as a top plate, and the first members 10 and 10 'function as legs. As shown in the drawing, mortises 2 and 2'are provided at the centers of both ends of the second member 20, and the mortises 1 and 1'provided in the first members 10 and 10 'are fitted into the mortises 2 and 2'. By doing so, the first members 10 and 10 ′ and the second member 20 are joined.

In this embodiment, the position holding member 30 is made of a single plate and is preliminarily attached between the first members 10 and 10 ', but naturally it may be divided into two parts. Furthermore, when assembled, the length of the position holding member 30 may be adjusted so that each of the first members 10 and 10 ′ opens outward in a V shape to improve durability against a load.

FIG. 5 shows a sectional view of another embodiment of the desk described above. In this embodiment, the first pin members P1 and P1 'are attached to the lower side of the first members 10 and 10', the second pin member P2 is attached to the center of the lower surface of the second member 20, and the wire rope WI is attached to the second pin member. Both ends of the wire rope WI are fixed to the first pin members P1 and P1 ′ through P2, and the wire rope WI is adjustable by a turnbuckle TA. By adjusting the turnbuckle TA to bring the wire rope WI into a tense state, the tenon 1,1 '
It is possible to strengthen the joint between the mortises 2 and 2 '.

It should be understood that this joining structure is not limited to the above-mentioned embodiment, but can be used when assembling columns, beams and the like. Further, it may be used as a joint structure when attaching a warp prevention plate used as a floor plate or the like.

FIG. 6 shows a sectional view of an embodiment in which this joint structure is used in a chair. In this embodiment, the second member 20 is used as a stool, and tenon holes 2 and 2'are provided on both sides of the lower surface of the second member 20, and tenon holes 2 '' are provided at the upper end portions. Further, the first member 1 using the tenon 1, 1'as a backrest on the upper end portion of the first member 10, 10 'used as a leg.
Provide a tenon 1 ″ at the lower end of 0 ″.

By fitting the tenon 1 into the tenon 2, the tenon 1'into the tenon 2 ', and the tenon 1 "in the tenon 2", the first members 10, 10', 10 ″ is joined to the second member 20 to form a chair.

In this embodiment, the insertion hole 1 for attaching the position holding member 30 is provided on the upper part of the first member 10 or 10 '.
1, 11 'are provided, and a protrusion having a shape adapted to the insertion holes 11, 11' is provided at both ends of the position holding member 30 having the same length as the distance between the inner surfaces of the first members 10, 10 '. Part 3
1, 31 'are provided, and further, each protrusion 31, 31' is provided with an insertion hole for a wedge that contacts the outer surface of each first member 10, 10 '.

Then, the protrusions 31, 31 'are inserted through the insertion holes 11, 11', the wedges KU, KU 'are inserted into the insertion holes of the protrusions 31, 31', and the first members 10, 10 'are inserted. And the second member 20 can be firmly joined to each other.

The position holding member 3 for the first member 10 ''
0 ″ is attached to the upper end of the second member 20, and the first pin member P1 attached to the upper part of the first member 10 ″ and the second pin member P2 attached to the end of the second member 20 are wire ropes. The first member 10 ″ and the second member 20 can be firmly joined to each other by connecting with the WA, tensioning the wire rope WI with the turnbuckle TA, and rotating the position holding member 30 ″ as a fulcrum. It is configured.

[0023]

As described above, according to the present invention, since the tenon is provided in the center of the member, when the tenon and tenon are joined together, all of these connecting structures are hidden, and the advantageous effects of the conventional dovetail tenon are obtained. It is equipped with excellent aesthetics. Therefore, it is effective when assembling furniture, buildings, and the like, which place particular importance on aesthetics.

[Brief description of drawings]

FIG. 1 shows a perspective view of an embodiment of the present invention.

FIG. 2 shows a sectional view corresponding to FIG.

FIG. 3 shows an explanatory diagram of the present invention.

FIG. 4 shows an explanatory diagram of an example in which the present invention is used for a desk.

FIG. 5 shows a sectional view of another example in which the present invention is applied to a desk.

FIG. 6 shows a sectional view of an example in which the present invention is applied to a chair.

[Explanation of symbols]

1 Mortise 10 First member 2 mortise 20 Second member 1a First inclined side 2a Second inclined side 30 Position holding member

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Claims (2)

[Claims] 1. A joint structure in which a tenon provided on a first member is fitted into a tenon provided on a second member to be joined, the tenon having a substantially U-shaped cross section, One side of the cross section forms a first inclined side that is inclined outward from the root of the tenon toward the first member, and the mortise hole has a cross section formed wider than the cross section of the tenon. And a second inclined side adapted to the first inclined side, wherein the first side is formed when the tenon is fitted into the tenon hole.
A joint structure using mortises and mortises, wherein a position holding member is attached to the first member or the second member such that an inclined side is always in contact with the second inclined side. 2. The position holding member can be detached by applying an adhesive to the tenon or the tenon to bond and fix the first member and the second member. Item 10. A joint structure comprising a tenon and a tenon according to item 1.