JPH06322752A - Joint of column and its production - Google Patents

Abstract

PURPOSE:To obtain a joint of a column which can connect extremely firmly without welded parts and also increase workability. CONSTITUTION:This joint is composed of a complex elliptical projection A having a complex elliptical protrusion 2 at one end of a column 1 and a complex elliptical groove B having a complex elliptical groove 5 at the other end of another column 1. An inner side groove line 3 is formed at the complex elliptic protrusion 2 or an outer side groove line 6 is formed at the complex elliptic groove 5 or both are formed. Three or more complex elliptic major axes are formed at regular intervals in the whole periphery. After the complex elliptic protrusion 2 has been inserted in the complex elliptic groove 5, these are caulked and fixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a columnar joint device which is non-welded, can be connected very strongly, and has excellent workability, and a method of manufacturing the same.

[0002]

2. Description of the Related Art Even today, concrete piles are
Connected by welding. Specifically, the actual public Sho-39-
No. 18126, a concrete pile end is wound with a tubular iron plate, an iron flat plate is integrally provided on the tubular iron plate end, and the iron flat plates at the ends of the adjacent pillars are superposed on each other. The outer circumferences of the mating parts of the iron plates are connected by welding. Since this joint pile is excellent in workability and strength, it is a concrete joint pile still used today.

In addition to the above-mentioned welded joints, many screw type joints have been developed. However, they are used only for small diameter joints and have a large diameter pile (diameter of about 1 m).
(Inside and outside), concrete joint piles are still manufactured by welding.

Furthermore, in Japanese Utility Model Publication No. 51-14401,
There is also one in which a plurality of projecting pieces are provided at a joint and a groove is formed at another joint to construct a joint pile. In Japanese Utility Model Publication No. 51-19283, there is a structure in which another ring is provided at the joint portion so that the projection and the taper groove portion are engaged with each other.

[0005]

However, the welded joint has the greatest drawback that it cannot work in rainy weather, and it is dangerous to judge the welded strength only by the appearance. The current situation was to ensure strength by measuring at. Furthermore, a certain degree of skill is required to perform the welding reliably, and there is a disadvantage that even beginners cannot perform the welding.

Further, the screw type joint has to be rotated many times, and if the diameter is large, there is a drawback that the device becomes large and it is difficult to obtain strength.

Further, in Japanese Utility Model Publication No. 51-14401,
Since the engaging portions between the protruding piece and the groove are few and they are simply inserted and locked, there is a drawback that strength cannot be obtained. Also, the actual public 5
In No. 1-19283, the number of parts is increased, the structure is complicated, and the strength is not sufficient.

Under these circumstances, there is a demand in the industry for a non-welded joint having a simple structure and excellent strength.

[0009]

Therefore, as a result of earnest studies to solve the above problems, the inventor has found that the invention is a composite elliptical projection having a composite elliptical projection at one end of a columnar body. And a compound elliptical groove part having a compound elliptical groove part at the other end of another columnar body, wherein the compound elliptical protrusion has an inner groove and the compound elliptical groove has an outer groove. A joint device for a columnar body which is formed on one side and has long axes of a composite elliptical shape formed at three or more locations at equal intervals all around the circumference, and the composite elliptical projections are inserted into the composite elliptical groove portions and then caulked and fixed. Or, or composed of a composite elliptical projection body having a composite elliptical projection at one end of the columnar body, and a composite elliptical groove body having a composite elliptical groove at the other end of another columnar body, The inner elliptical groove is formed on the compound elliptical protrusion and the outer groove is formed on either side of the compound elliptical groove. Formed at regular intervals all around the three or more, inserting the composite elliptical protrusion in the composite elliptical groove,
Next, rotate each other within about 60 degrees, and then caulking the compound elliptical protrusion and the compound elliptical groove, and press-fitting a part of the thick part on the other side into the groove, caulking about 180 degrees. By adopting the method of manufacturing a columnar joint device as described above, the structure is simple, connection can be made extremely strongly, and workability can be made excellent, thus solving the above-mentioned problems.

[0010]

EXAMPLES Examples of the present invention will be described below with reference to the drawings. The columnar body 1 includes reinforced concrete piles, reinforced concrete joint poles, reinforced concrete columns, reinforced concrete joint beams, steel piles, and the like ( Figure 1,
50, 51, etc.).

A composite elliptical projection A is provided at one end of the columnar body 1, and a composite elliptical groove B is provided at the other end of the other columnar body 1. An inner groove 3 is formed on at least one of the composite elliptical projections 2 of A and an outer groove 6 is formed on at least one of the composite elliptical grooves 5, and the composite elliptical projections A and B are Is configured to be fixed by caulking by rotation and connected.

The composite elliptical projection A is made of metal, and the composite elliptical projection 2 which may have the inner groove 3 and the metal seat plate 4 are integrally formed. A compound elliptical projection 2 is formed on the outer surface side. The case where the inner groove 3 is formed in the composite elliptical projection 2 is the first embodiment of the present invention. In this case, the outer diameter portion of the protrusion on the side of the metal seat plate 4 and the outer diameter portion of the inner groove are formed with different diameters, and the end surface of the composite elliptical protrusion 2 is formed in a flat shape. .

The composite elliptical groove B is made of metal, and the composite elliptical groove 5 which may have the outer ridge 6 and the metal seat plate 7 are integrally formed. A compound elliptical groove 5 is formed on the front surface side. The case where the outer groove 6 is formed in the composite elliptical groove 5 is the second embodiment of the present invention. In this case, the inner diameter portion of the groove portion and the inner diameter portion of the outer groove are formed with different diameters, and the composite elliptical groove portion 5 is formed.
Has a flat bottom surface.

The compound elliptical projection 2 is a substantially hanging (excluding dovetail) pillar piece, and the compound elliptical groove 5 is a substantially vertically (excluding dovetail) hole, and The height of the composite elliptical projection 2 and the depth of the composite elliptical groove 5 are substantially the same (including the same). In addition, one of the composite elliptical projection 2 and the composite elliptical groove 5 may be configured to be narrowed toward the tip (see FIGS. 9 and 27).

Further, metal cylindrical bodies 8 are fixed to the outer peripheries of the ends of the composite elliptical projection A and the composite elliptical groove B, respectively, and the metal cylindrical body 8 holds the columnar body 1. It is fixed as if. Further, the metal seat plate 4 of the composite elliptical projection A and the metal seat plate 7 of the composite elliptical groove B are engaged with the ends of the tensioned reinforcing bars 9, that is,
The composite elliptical projection A and the composite elliptical groove B are attached to the end of the columnar body 1 so that tensile stress is generated in the reinforcing bar 9.

In the present specification, the term "composite ellipse" means a non-circular shape in which a plurality of ellipses are overlapped with each other and the outer shape is formed by the arcuate portion in the major axis direction and the arcuate portion in the minor axis direction of the ellipse. The ellipse has three or more major axes on the circumference.

Theoretical description of the complex ellipse is as follows.
As shown in FIG. 35 (a), for example, four circles are arranged at equal intervals.
If there are two major axes, the basic circle (true circle radius r ₀ )
, 0 ° (2π), π / 2, π, 3π / 2, 2π
A curve was obtained by reducing the distance by an appropriate distance h at the (0 °) position and increasing it by an appropriate distance h at the π / 4, 3π / 4, 5π / 4, 7π / 4 positions. It is a thing. That is, this is h cos [4 (θ + π / 4)] = h cos (4θ +, as shown in FIG.
It is formed by winding a cosine curve of (π) around the basic circle (true circle radius r ₀ ), and is formed to be approximately equivalent to a composite of two ellipses with their long axes orthogonal to each other. This is the concept of compound ellipse. The reason why the shape is a composite ellipse is because it includes a case where the shape is a polygon (a dozen or more angles) while approaching the composite ellipse, as described later. Further, the theoretical formula in the case where four major axes exist at equal intervals on the circumference is the length from the center point of the basic circle to the curve (trajectory) at an arbitrary position of the compound ellipse in FIG. If y, then y = r ₀ + h cos (4θ + π).

Further, there are a plurality of embodiments of this complex elliptical shape, and when the major axis of the ellipse is three in the circumference (see FIG. 42), there are four cases [FIG. 1, FIG. 3 (b), FIG. (B), see FIG. 18, etc.] There are five cases (see FIG. 43), six cases (see FIG. 44), eight cases (see FIG. 45), and the like.

Explaining the case of actually molding a complex ellipse having its four major axes, there are the perfect circle standard method and the polygon standard method based on the above theory. As a result, they are the same, but the difference is whether they are based on a perfect circle or a polygon.

First, as a perfect circle reference method, as shown in FIG. 36, when four major axes of an ellipse are present at equal intervals, a basic circle (perfect circle radius r ₀ ) is drawn and this basic circle is drawn. The intervals h are taken inside and outside, and this 2h is the width of the ant viewed in plan. An outer circle is drawn on the outer side of the base circle with reference to the outer position of the distance h. Then, an inner circle is drawn on the inner side of the basic circle with reference to the inner position at the interval h. At this time, draw a tangent line from the inner circle that is divided into four parts. About 45 degrees (π /
Draw an arbitrary quadratic curve up to 4), and from this draw an arbitrary quadratic curve that touches the tangent of the inner circle.
It is drawn as a compound ellipse in the form of a set of four ellipses in which a curve connecting the tangent line and the outer circle is alternately drawn.

In particular, in the case where the composite elliptical shape is used, FIG.
As shown in FIG. 8, dividing points are provided at appropriate points on the composite ellipse to divide the whole into a large number, and connecting the points with short straight lines results in a polygon inscribed in the complex ellipse. It is formed. A polygon inscribed in a compound ellipse is also called a compound ellipse.

Further, in the case where the composite elliptical shape is used, as shown in FIG.
As shown in FIG. 9, a large number of tangent lines are provided from the curved position of the composite ellipse at an appropriate point, and adjacent tangent lines are connected to each other (comparatively short line segment) so as not to be separated from each other in the complex ellipse. A polygon circumscribing the ellipse is formed. A polygon circumscribing the compound ellipse is also called a compound ellipse.

Next, as a polygonal reference method, when four major axes of an ellipse exist at equal intervals as shown in FIG. 37, a basic circle (true circle radius r ₀ ) is drawn, and this basic circle is drawn. The inside and outside are spaced by a distance h, and this 2h is the width of the ant seen in a plane. A square is drawn on the inside of the basic circle with reference to the position obtained by dividing the inside circumference by a distance of h into four. Draw an inscribed circle inscribed in this square. Then, an outer circle is drawn on the outer side of the basic circle with reference to the outer position of the distance h. Next, draw an arbitrary quadratic curve so that it matches the outer circle at the angular position from the point touching the inscribed circle of the square to the corner of the square. Draw any quadratic curve. A part of four ellipses that draw a curve that connects the square to the inscribed circle and the outer circle at the corner of the square is drawn as a compound ellipse.

The compound ellipse drawn in this way is the same as the compound ellipse according to the perfect circle criterion method. Also in this polygonal standard method, a polygon that is inscribed or circumscribed in the complex ellipse in the case of the perfect circle standard method is also referred to as a complex ellipse shape. The compound ellipse drawn in this way is the same as the compound ellipse according to the perfect circle criterion method.

Next, as described above, the compound elliptical projection 2 is formed.
The first embodiment of the present invention the inner groove line 3 formed on the described (see FIGS. 1-9), the maximum outer diameter R ₁ of the projection outer diameter, the maximum outer inner grooves shall outer diameter If R _{2 is} the diameter and R ₃ is the maximum inner diameter of the groove inner diameter R ₃ (here, if the major axis of the ellipse is even, it is the diameter, and if it is odd, it is the radius.), R ₂ <R ₁ <R ₃ It is necessary to satisfy (1). This is clear from FIG. 6 (a).

Further, assuming that the minimum outer diameter r _{1 of} the outer diameter portion of the protrusion, the minimum outer diameter r _{2 of} the outer diameter portion of the inner groove, and the minimum inner diameter r _{3 of the} inner diameter portion of the groove (again, the major axis of the ellipse is If the number is even, the diameter is used, and if the number is odd, the radius is used.), And r ₂ <r ₁ <r ₃ (2) must be satisfied. This is clear from FIG. 6 (b).

Further, r ₃ <R ₁ (3) Satisfying this expression is shown in FIGS. 8B and 9.

In the above equation, it is essential to satisfy the equations (1) to (3).

In particular, if the formulas for satisfying all the conditions of the formulas (1) to (3) are integrated, R ₂ <r ₃ <R ₁ (4) when the amount of bite of the material is small. . This is clear from FIG. 8 (b).

In addition, in the case of considerably cutting in, FIG.
As shown in (c), when the equations are integrated, r ₃ <R ₂ <R ₁ (5).

Further, in particular, the expression (3) is a condition that the maximum outer diameter R ₁ of the protrusion outer diameter portion is larger than the minimum inner diameter r ₃ of the groove inner diameter portion, which is also shown in FIG. 8B. As described above, the protrusions are digging into each other and are caulked. As described above, when the formula (3) is satisfied, the caulking can be fixed.

In the case where the composite elliptical projection body A and the composite elliptical groove body B satisfying the above-mentioned formula are engaged and fixed, and there are four major axes of the ellipse, first, the maximum outer diameter R ₂ of the maximum outer diameter R ₁ and the inner groove strip outside diameter portion of the protrusion outside diameter portion of the oval-shaped protrusion member a, and a maximum inner diameter R ₃ of the groove inner diameter portion of the composite elliptical groove body B Almost coincides with the radial direction,
In addition, the minimum outer diameter r _{1 of the} outer diameter portion of the protrusion of the composite elliptical protrusion A
Also, the minimum outer diameter r _{2 of the} outer diameter portion of the inner groove and the minimum inner diameter r _{3 of the} inner diameter portion of the groove of the composite elliptical groove portion B are made to substantially coincide with each other in the radial direction, and both are surface-bonded. this is,
Since the expressions (1) and (2) can be satisfied at the same time, in particular, the composite elliptical groove body B is more than the maximum outer diameter R ₂ of the inner groove outer diameter portion of the composite elliptical projection body A. The maximum inner diameter R ₃ of the groove inner diameter portion is large, and the minimum inner diameter r of the groove inner diameter portion of the compound elliptical groove portion B is smaller than the minimum outer diameter r ₂ of the inner groove outer diameter portion of the compound elliptical projection body A. since ₃ large, whatever resistance or, without such Lash, be extremely smoothly inserted and surface bonding.

When there are four major axes of the ellipse, the ellipse is rotated about 45 degrees. This rotational force (torque) is caused by the material and the amount of biting between the maximum outer diameter R ₁ of the projection outer diameter portion of the composite elliptical projection body A and the minimum inner diameter r ₃ of the groove inner diameter portion of the composite elliptical groove body B. Alternatively, the complex elliptical groove portion 5 bites into the inner protrusion 3 of the complex elliptical protrusion body A, and although it depends on the biting amount and the like, a considerably large torque is required to obtain the crimped state.

Judging from the material mechanics of this caulking state, as shown in FIG. 8 (b), for example, the composite elliptical projection A and the composite elliptical groove B are made of metal and made of the same material. The composite elliptical protrusion 2 and the composite elliptical groove portion 5 are bitten as if the corresponding part (thick part) is crushed by the other part (thick part), and the part is pressed against the other part. . That is, the composite elliptical projection 2 is subjected to a strong compressive load in the central direction thereof, and the composite elliptical groove 5 is subjected to a tensile load pulling outward, which balances the forces. It is caulked and fixed while holding it. As a result, the slanted boundary lines of both are reduced from R ₁ to R ₁₀ and from R ₂ to R ₂₀ in the composite elliptical projection 2, and from r ₃ to r ₃₀ in the composite elliptical groove 5 and its composite. some of the elliptical grooves 5 or a thick portion protruding r _'30 in said groove Article 3 [4 (a) and 7
(B)], the or a part of a composite ellipsoidal protrusion 2 becomes thicker portion protrudes R _'10 in the outer groove of Article 6 [Figure 22
See (a) and FIG. 26 (b)] Each is expanded and fixed by caulking. This allows the two to be substantially integrated in terms of material mechanics.

Further, the axial centers c ₁ and c of the columnar bodies 1 and 1 of each other.
_As shown in FIG. 34, the flat taper portion 2a is joined to the compound elliptical projection 2 and the flat taper portion 5 to be surface-bonded to the flat taper portion 2a is formed in the compound elliptical groove portion 5 as shown in FIG.
In some cases, each a is formed. In the case of FIG. 34 (a), the flat taper portion 2a is convex and the flat taper portion 5 is
34A, the flat taper portion 2a is concave and the flat taper portion 5a is convex.

As described above, in the joining work, after the both are surface-joined, the caulking is fixed only by rotating at least about 45 degrees (the angle to which the force is applied by caulking is about 30 degrees experimentally). Is completed, the columnar joint device can be constructed. The point where the caulking is fixed is approximately half of the circumference (180 degrees). In this case, an ellipse whose major axis is provided on the circumference is equally spaced and unequal.

Next, the second embodiment of the present invention in which the outer groove 6 is formed in the complex elliptical groove portion 5 will be described. The maximum outer diameter R _{1 of} the outer diameter portion of the protrusion and the maximum inner diameter of the inner diameter portion of the groove portion will be described. R ₃
And the maximum inner diameter R _{4 of the} inner diameter portion of the outer groove (here, if the major axis of the ellipse is even, it is the diameter, and if it is odd, it is the radius). R ₁ <R ₃ <R ₄ (6 ) Is required to be satisfied. This is clear from FIG. 24 (a).

Further, the minimum outer diameter r ₁ of the projection outer diameter portion, when respectively the minimum inner diameter r ₃ and the minimum inner diameter r ₄ of the outer groove line inner diameter portion of the groove inner diameter portion (here, the ellipse major axis is even In this case, the diameter is used, and in the case of an odd number, the radius is used.), And r ₁ <r ₃ <r ₄ (7) must be satisfied. This is clear from FIG. 24 (b).

Further, r ₃ <R ₁ (8) Satisfying this expression is shown in FIGS. 26B and 27.

In the above equation, it is essential to satisfy the equations (6) to (8). In addition, when the perpendicularity of the composite elliptical protrusions 2 is the same, the formulas (6) to (8) are used.
It is necessary to satisfy all the conditions of the formula.

In particular, if the equations satisfying all the conditions of equations (6) to (8) are integrated, r ₃ <R ₁ <r ₄ (9) when the bite amount of the material is small. . This is clear from FIG. 27 (b).

In the case of considerably cutting in, as shown in FIG. 27C, if the conditional expressions are integrated, r ₃ <r ₄ <R ₁ (10).

Further, in particular, the expression (8) is a condition under which the maximum outer diameter R ₁ of the protruding outer diameter portion is larger than the minimum inner diameter r ₃ of the groove inner diameter portion, which is shown in FIGS. As shown in 27, the protrusions are digging into each other and crimped. As described above, when the formula (8) is satisfied, the caulking can be fixed.

Since the mounting method and the manufacturing method thereof are the same as those in the first embodiment, the description thereof will be omitted.

Further, in the above description, regarding the composite elliptical shape of the composite elliptical projection A and the composite elliptical groove B, the case where there are four major axes of the ellipse and they are arranged at equal intervals has been described. However, this time is a case where the major axis portions of the ellipse are unequally spaced. This is shown in FIG. 46 to FIG. 49, in particular, when a beam (see FIG. 50) or a column (see FIG. 51) is applied, an unbalanced load is applied to the column or one side surface of the beam. In particular, the tensile load can be strengthened. Since this specific example is similar to the case where the intervals are equal, the description thereof will be omitted.

Further, the composite elliptical projection A and the composite elliptical groove B may be made of hard material but of equal hardness. In this way, when the caulking is fixed, the mutual meat portions can be fixed so as to bite each other (see FIG. 8B).

The composite elliptical projection A is made of a hard material, the composite elliptical groove B is made of a relatively soft material, and the inner groove 3 is formed on the composite elliptical projection A. In the case of forming a film [see FIG. 15]. In this way, when caulking is performed, the composite elliptical groove body B is more crushed than the composite elliptical projection body A, and the inner groove 3 has a wall thickness of the composite elliptical groove body B. Can be firmly fixed so that a part of it becomes a biting shape. Next, in the inner groove 3 of the composite elliptical projection 2, as shown in FIG. 10, the major axis of the ellipse is slightly raised from the other portions so that a flat chevron shape is formed as a whole.
One or more are formed and are configured to change a slight height Δh as a whole. In this case, the composite elliptical groove portion 5 is composed of only a drooping groove. Therefore, when the columnar body 1 having the compound elliptical projections A is rotated after the surface bonding with respect to the columnar body 1 having the compound elliptical groove body B, the compound ellipse is inclined due to its flat chevron shape. As shown in FIG. 12, the composite elliptical projection body A is drooped in the downward direction in accordance with the amount by which part of the wall thickness of the composite elliptical groove body B bites into the inner groove 3 of the projecting projection body A. A force acts on the groove portion B in the vertical direction to generate a force in which the two attract each other. That is, as the caulking state is achieved, the columnar bodies 1 and 1 are in a crimped state, and the axial centers of the columnar bodies 1 and 1 naturally coincide with each other. Specifically, as shown in FIGS. 13 (a) and 13 (b), the crimped state is maintained and, at the same time, the mutual axial centers c ₁ and c ₂ are also aligned.

Further, on the outer periphery of the composite elliptical groove portion body B,
A reinforcing ring 11 may be provided (see FIG. 16). The reinforcing ring 11 is loosely fitted to one side before caulking and fixing the joint devices of adjacent columnar bodies to each other, and then caulking and fixing, but the composite elliptical groove portion B is slightly, The outer circumference becomes larger, and at this time, the reinforcing ring 11 is fixed to the outer circumference of the composite elliptical groove body B in a tightly fitted state. Always on the reinforcement ring 11,
Tensile stress is acting.

Further, one or a plurality of annular projections 11a may be provided on the inner peripheral surface of the reinforcing ring 11 (see FIG. 17 (a)). The cross section has a triangular shape, a semicircle, a quadrangular shape, or the like. In this way, generally, when the caulking is fixed, tensile stress acts on the composite elliptical groove portion body B, and when the outer circumference becomes slightly large, it enters into the annular ridge 11a and the reinforcing ring 1
In No. 1, tensile stress is maintained to the extent that tensile stress does not occur, brittle fracture or metal fatigue can be reduced over a long period of time, and durability can be maintained.

Further, in place of the annular projection 11a, a metal ring 12 made of a relatively soft material capable of withstanding the strength of another member.
May be provided between the composite elliptical groove body B and the reinforcing ring 11 [see FIG. 17 (b)].

In some cases, the outer groove 6 is formed in the composite elliptical groove portion 5, the composite elliptical projection A is made of a relatively soft material, and the composite elliptical groove B is made of a hard material. In this way, when the caulking is fixed, the composite elliptical projection A is crushed more than the composite elliptical groove B, and the composite oval projection A of the composite elliptical projection A is placed in the outer groove 6. It can be firmly fixed so that part of the wall thickness becomes a biting shape.

Also, the outer groove 6 of the composite elliptical groove 5
As shown in FIG. 11, three or more flat chevrons are formed as a whole so that the major axis portion of the ellipse slightly rises from the other parts, and the height Δh slightly changes as a whole. It is configured. In this case, the composite elliptical protrusion 2 is composed of only a drooping groove. Therefore, for the columnar body 1 having the composite elliptical groove body B, the composite elliptical projection body A is
The amount by which part of the wall thickness of the composite elliptical protrusion A penetrates into the outer groove 6 of the complex elliptical groove portion 5 when the columnar body 1 having the above is rotated after the surface bonding, due to the inclination of the flat chevron shape. Accordingly, the same as in the case of FIG.
A force acts in the hanging direction and a force acts in the vertical direction on the composite elliptical groove portion body B, so that a force of attracting the two is generated. That is, as the caulking state is achieved, the columnar bodies 1 and 1 are in a crimped state, and the axial centers of the columnar bodies 1 and 1 naturally coincide with each other. Specifically, as shown in FIGS. 13 (a) and 13 (b), the crimped state is maintained and, at the same time, the mutual axial centers c ₁ and c ₂ are also aligned.

Further, the inner groove 3 is provided on the composite elliptical projection 2.
The outer groove 6 may be formed in the composite elliptical groove 5 (see FIGS. 28 to 31). In such cases,
When the caulking and fixing are performed, the thick portions on the other side bite into each of the inner side groove 3 and the outer side groove 6 to make them strong.

When the inner groove 3 and the outer groove 6 are present, the composite oval groove body B is filled with the hardened bonding agent 10 and then the composite oval projection body A is inserted. They may be surface-bonded and then caulked and fixed by rotation. In particular, when the hardened bonding agent 10 is used, as shown in FIG.
As shown in FIG. 3, in the cross-section when cured, it is filled in the inner groove 3 and the outer protrusion 6 of the composite elliptical projection 2 and the cured bonding agent 10 is caught by the pulling in the vertical direction. Acts like a force. Specifically, in the present invention, there is a gap state other than the caulked fixing portion. As the position, the minimum outer diameter r ₂ of the minimum outer diameter r ₁ and the inner groove strip outside diameter portion of the projection outer diameter portion of the composite elliptical projection member A,
It is the distance from the maximum inner diameter R ₃ of the inner diameter portion of the groove of the composite elliptical groove portion B. This space is a large space and cannot contribute to the increase in the fixing force. However, the cured bonding agent 10
In the presence of the cured adhesive, when viewed as a cross section after curing, the curing adhesive 10 penetrates into the inner groove 3 of the composite elliptical protrusion 2 and is supported in the vertical direction of the columnar body 1 (upward in the plane of the drawing). And acts as a vertical axial force. Such an axial force has a force for pulling upward and is strong against a tensile load. In addition, the outer groove 6 of the composite elliptical groove 5
The hardened bonding agent 10 penetrates into the inside and acts so as to support the columnar body 1 in the vertical direction (downward direction on the paper surface) and becomes an axial force in the vertical direction. Such an axial force has a force for pulling downward and is strong against a tensile load.
As a result, about half of the caulked fixing points and about half of the fixing by the curing bonding agent 10 are fixed over the entire circumference, which can be extremely strong.

In some cases, a plurality of bolts 13, 13, ... May be reinforced and fixed to the outer periphery of the composite elliptical groove portion B (see FIGS. 18 and 19). It is attached at 4, 6, 8 and so on.

The ones shown in FIGS. 40 and 41 are
It is an example other than caulking fixation. That is, the structure is the same as that of the present invention, but when they are rotationally fixed, they simply come into contact with each other. Specifically, as shown in FIG. 41 (b), the maximum outer diameter R of the projecting small-diameter portion of the composite elliptical projecting body A
₁ and the minimum inner diameter r ₃ of the groove of the composite elliptical groove body B
It is fixed to the extent that and touch only. That is, R ₁ = r ₃ . For the maximum gap, see Fig. 41.
As shown in (a), this is the same as the case of the present invention, and in this case, it is necessary to fill the cured bonding agent 10.

[0057]

According to the invention of claim 1, firstly,
It is a non-welded joint and has the advantage of being able to work even in rainy weather. Secondly, it can be integrated by crimping rather than simple engagement, the joint can be made extremely strong, and thirdly, the joint part About half of them are joints and are strong. Fourthly, because of the complex elliptical joint, there are three or more caulking fixed points on the circumference, which can respond to bending from any direction, This has the effect of increasing the moment.

Further, in the invention of claim 2, since the composite elliptical projection body A and the composite elliptical groove body B are made of a hard material but of the same hardness, when caulking and fixing, The mutual meat parts can be fixed so as to bite into each other.

In the third aspect of the invention, the composite elliptical projection A is made of a hard material, the composite elliptical groove B is made of a relatively soft material, and the composite elliptical projection is made. Since the inner groove 3 is formed on the body A, when the caulking is fixed, the composite elliptical groove body B is more crushed than the composite elliptical protrusion A and is compounded on the inner groove 3. The elliptical groove portion B can be firmly fixed so that a part of its wall thickness becomes a biting shape.

Next, in the invention of claim 4, in the inner groove 3 of the compound elliptical projection 2 in claim 3, the major axis of the ellipse is slightly elevated from the other parts. Since the columnar bodies 1 and 1 are in a crimped state as the caulking state occurs, the axial centers c ₁ and c _{2 of the} columnar bodies 1 and 1 are naturally aligned with each other. That is, at the same time that the crimped state is maintained, the mutual axial centers c ₁ and c ₂ also become coincident with each other.

Further, in the invention of claim 5, the reinforcing ring 1 is provided on the outer periphery of the composite elliptical groove portion body B in claim 3.
When the caulking is performed, the composite elliptical groove body B is slightly increased, but the outer circumference of the composite elliptical groove body B is enlarged. At this time, the reinforcing ring 11 is firmly fitted to the outer circumference of the composite elliptical groove body B. Is held and fixed, and the joint device can be stabilized and strengthened.

Further, in the invention of claim 6, the reinforcing ring 11 in claim 5 has an inner peripheral surface,
Since one or a plurality of annular ridges 11a are provided, generally, when caulking and fixing, a tensile stress acts on the composite elliptical groove portion body B, and when the outer circumference becomes slightly larger, the annular ridge 11a bites into the annular ridge 11a. And its reinforcement ring 1
No. 1 has an advantage that tensile stress is maintained so that brittle fracture or metal fatigue can be reduced over a long period of time and durability can be maintained.

Further, in the invention of claim 7, in claim 5, a metal ring 12 made of a relatively soft material capable of withstanding the strength of another member is provided between the composite elliptical groove portion B and the reinforcing ring 11. Since it is provided in the above, the same effect as the sixth aspect can be obtained.

Further, in the invention of claim 8, the outer groove 6 is formed in the composite elliptical groove portion 5, and the composite elliptical projection body A is formed.
Is a relatively soft material, and the composite elliptical groove body B is a hard material. Therefore, when caulking and fixing, the composite elliptical projection body A is crushed more than the composite elliptical groove body B, and The composite elliptical projection body A can be firmly fixed in the outer groove 6 so that a part of the wall thickness of the composite elliptical projection body A becomes a biting shape.

Further, in the invention of claim 9, the outer groove 6 of the complex elliptical groove portion 5 of claim 8 has a flat chevron shape in which the major axis portion of the ellipse is slightly elevated from other portions. Since it is configured to be formed in plural, the composite elliptical projection 2 in this case is configured only by the drooping groove.
By forming in this way, when the columnar body 1 having the composite elliptical projections A is rotated after the surface bonding of the columnar body 1 having the composite elliptical groove body B, the inclination of the flat chevron shape is formed. Therefore, the composite elliptical projection body A is hung downward in accordance with the amount by which part of the thickness of the composite elliptical projection body A bites into the outer groove 6 of the composite elliptical groove body 5 in the downward direction. In B, a force acts in the vertical direction to generate a force in which the two attract each other. That is, as the caulking state is achieved, the columnar bodies 1, 1 are in a crimped state, and the axial centers c ₁ , c _{2 of the} columnar bodies 1, ₁ are naturally aligned. That is,
According to the present invention, the crimped state is maintained, and at the same time, the mutual axial centers c ₁ and c ₂ are also aligned.

Further, in the invention of claim 10, since the inner groove 3 is formed in the compound elliptical projection 2 and the outer groove 6 is formed in the compound elliptic groove 5 in claim 10, when caulking is performed, Each of the inner groove 3 and the outer groove 6 has a thick portion on the other side that bites into it to make it strong.

In the eleventh aspect of the invention, when the inner groove 3 and the outer groove 6 of the tenth aspect are present, the hardened bonding agent 10 is filled in the composite elliptical groove body B. In the cross-section when cured, the composite elliptical projection 2 is filled in the inner groove 3 and the outer projection 6 and exerts a force action so that the cured bonding agent 10 is caught by the pull in the vertical direction. None, that is, the hardened bonding agent 10 penetrates into the outer groove 6 of the composite elliptical groove portion 5, and the columnar body 1
Acting as a support in the vertical direction (downward in the plane of the drawing), and becomes an axial force in the vertical direction. Such an axial force has a force against tension, a tensile stress is generated, and it becomes strong against a tensile load. As a result, about half of the caulked fixing points and about half of the fixing by the curing bonding agent 10 are fixed over the entire circumference,
An extremely strong joint device can be provided.

Further, in the invention of claim 12, since a plurality of bolts 13, 13, ... Are reinforced and fixed to the outer periphery of the composite elliptical groove portion B in claim 1, the fixing by the bolts 13 further stabilizes. Can be a strong joint device.

In the inventions of claims 13 to 24, the major axes of the ellipses are unequal intervals, but in this case, it is possible to favorably deal with the case where a large bending moment is applied to only one side. The other effects are substantially the same as the effects of the invention of claims 1 to 12.

Next, in the invention of the twenty-fifth aspect of the invention, after the butting, the caulking can be fixed by rotating each other within about 60 degrees, and the caulking can be fixed to about half of the entire circumference. At the same time, there is a great advantage that the joint work can be performed very quickly.

Further, in the invention of the manufacturing method of claim 26, although the major axes of the ellipses are unequal intervals, substantially the same effect as the invention of claim 25 can be exhibited.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention in a state where they are separated from each other before being caulked and fixed.

FIG. 2 is a longitudinal sectional view of the first embodiment of the present invention in a state in which they are separated from each other before they are fixed by crimping.

FIG. 3A is a longitudinal sectional view of the first embodiment of the present invention in a state of being surface-bonded to each other before being caulked and fixed, and FIG. 3B is a partially enlarged sectional view taken along line CC of FIG. 3A.

FIG. 4A is a longitudinal sectional view of the first embodiment of the present invention in a state of being fixed by caulking, and FIG. 4B is a partially enlarged sectional view taken along the line D-D of FIG. 4A.

FIG. 5 is a laterally enlarged cross-sectional view of the essential parts of the first embodiment of the present invention in a state of being surface-bonded to each other before caulking and fixing.

6A is an enlarged cross-sectional view taken along arrow E1-E1 of FIG. 5, and FIG. 6B is an enlarged cross-sectional view taken along arrow E2-E2 of FIG.

FIG. 7 is a laterally enlarged cross-sectional view of a main part of the first embodiment of the present invention in a state in which it is caulked and fixed.

8A is an enlarged cross-sectional view taken along arrow G1-G1 of FIG. 7, and FIG. 8B is an enlarged cross-sectional view taken along arrow G2-G2 of FIG.

9 (a), (b), (c) are longitudinally enlarged cross-sectional views of a main part of another embodiment of the first embodiment of the present invention in a state in which they are fixed by crimping.

FIG. 10 (a) is a side view, partly in section, of the first embodiment of the present invention in which a plurality of inner grooves of the compound elliptical projection are formed in a flat mountain shape, and (b) is J1-J1 of (a). (C) is a development view of the flat chevron portion of the inner groove shown in (a). (D) is an enlarged cross section taken along the line J2-J2 of (b). (E) is an arrow of J3-J3 shown in (b). Expanded sectional view

FIG. 11 (a) is a side view, partly in section, of a second embodiment of the present invention in which a plurality of outer grooves of the compound elliptical groove protrusion are formed in a flat chevron shape, and FIG. 11 (b) is K1-K1 of (a). (C) is a development view of the flat chevron portion of the outer groove of (a). (D) is an enlarged cross section of K2-K2 in (b). (E) is an K3-K3 arrow in (b). Expanded sectional view

FIG. 12 is a longitudinal enlarged cross-sectional view of a main part of the present invention showing the action of force in a caulked and fixed state.

FIG. 13 (a) is a front view of the present invention in a state of being separated from each other before being caulked and fixed, and FIG. 13 (b) is a front view of the present invention in a state of being caulked and fixed.

FIG. 14 is a longitudinal enlarged cross-sectional view of a main portion after the composite elliptical projection body is made of a softening material rather than the composite elliptical groove body and fixed by caulking.

FIG. 15 is a longitudinal enlarged cross-sectional view of a main part after the composite elliptical groove body is made a softening material rather than the composite elliptical projection body and caulked and fixed.

FIG. 16 is a longitudinal enlarged cross-sectional view of a main part in a state where a reinforcing ring is attached to the configuration of FIG.

17 (a) is a longitudinal enlarged sectional view of an essential part of another embodiment in which a reinforcing ring is added to the configuration of FIG. 16 (b) is still another sectional view of the configuration of FIG. 16 in which a reinforcing ring is attached. Main part longitudinal enlarged sectional view of the embodiment

FIG. 18 is a lateral cross-sectional view of a main portion of another embodiment of the first embodiment of the present invention in which four bolts are fixed to the outer periphery in addition to the crimped and fixed state.

19A is an enlarged sectional view taken along the line LL of FIG. 18, and FIG. 19B is an enlarged sectional view of an embodiment different from that of FIG.

FIG. 20 is a vertical cross-sectional view of a second embodiment of the present invention in a state where they are separated from each other before being caulked and fixed.

FIG. 21 (a) is a longitudinal sectional view of a second embodiment of the present invention in a state of being surface-bonded to each other before being caulked and fixed, and FIG. 21 (b) is an enlarged sectional view taken along the line MM of FIG. 21 (a).

FIG. 22 (a) is the second embodiment of the present invention in a state in which caulking is fixed.
The longitudinal cross-sectional view of the embodiment (b) is an enlarged cross-sectional view taken along line NN of (a).

FIG. 23 is a laterally enlarged cross-sectional view of the essential parts of the second embodiment of the present invention in a state of being surface-bonded to each other before being caulked and fixed.

FIG. 24A is an enlarged sectional view taken along the arrow P1-P1 of FIG. 23, and FIG. 24B is an enlarged sectional view taken along the arrow P2-P2 of FIG.

FIG. 25 is a laterally enlarged cross-sectional view of the essential parts of the second embodiment of the present invention in a state in which it has been caulked and fixed.

26 (a) is an enlarged sectional view taken along the line Q1-Q1 of FIG. 25 (b) is an enlarged sectional view taken along the line Q2-Q2 of FIG.

27 (a), (b) and (c) are longitudinally enlarged cross-sectional views of a main part of another embodiment of the second embodiment of the present invention in a state in which caulking is fixed.

FIG. 28 is a laterally enlarged cross-sectional view of the essential parts of the third embodiment of the present invention in a state of being surface-bonded to each other before being caulked and fixed.

29 (a) is an enlarged cross-sectional view taken along the arrow S1-S1 of FIG. 28 (b) is an enlarged cross-sectional view taken along the arrow S2-S2 of FIG.

FIG. 30 is a laterally enlarged cross-sectional view of the essential parts of the second embodiment of the present invention in a state in which caulking is fixed.

31A is an enlarged cross-sectional view taken along the arrow U1-U1 of FIG. 30, and FIG. 31B is an enlarged cross-sectional view taken along the arrow U2-U2 of FIG.

FIG. 32 (a) is a partial cross-sectional front view of the third embodiment of the present invention in a state where the composite ellipsoidal groove portion is filled with the hardened bonding agent and is separated from each other before caulking and fixing (b). Is a front view showing a partial cross section of a third embodiment of the present invention in a state where the composite elliptical groove portion is filled with a hardening cement and is surface-bonded to each other before caulking and fixing.

FIG. 33 is a longitudinal enlarged cross-sectional view of an essential part of the third embodiment of the present invention after the joint is filled with a hardened bonding agent and after hardening and after caulking and fixing.

FIG. 34 (a) is a longitudinal enlarged cross-sectional view of an essential part of another embodiment of the first embodiment of the present invention in which the composite elliptical projection body and the composite elliptical groove body are fixed by caulking; A longitudinal enlarged cross-sectional view of a main part of still another embodiment of the first embodiment of the present invention in a state in which the composite elliptical projection body and the composite elliptical groove body are fixed by caulking.

FIG. 35 (a) is a schematic plan view for explaining the theory of the compound ellipse of the present invention. (B) is a graph for explaining the theory with the circumference of the compound ellipse as the horizontal axis and the diameter direction as the vertical axis.

FIG. 36 is a partial plan view of a compound ellipse drawn by the perfect circle criterion method.

FIG. 37 is a partial plan view of a compound ellipse drawn by the polygon (square) standard method.

FIG. 38 is a partial plan view of a complex ellipse which is a polygon inscribed in the complex ellipse.

FIG. 39 is a partial plan view of a compound ellipse that is a polygon circumscribing the compound ellipse.

FIG. 40 is a lateral enlarged cross-sectional view of a main part of another embodiment in a fixed state.

41 is an enlarged sectional view taken along the arrow X1-X1 of FIG. 40, and FIG. 41B is an enlarged sectional view taken along the arrow X2-X2 of FIG.

FIG. 42 is a plan view of a compound ellipse when the major axis of the ellipse is equally spaced at three points.

FIG. 43 is a plan view of a compound ellipse when the major axis of the ellipse is equally spaced at five points.

FIG. 44 is a plan view of a compound ellipse when the major axis of the ellipse is equally spaced at 6 points.

FIG. 45 is a plan view of a compound ellipse when the major axis of the ellipse is equidistant at eight locations.

FIG. 46 is a plan view of a compound ellipse when the major axes of the ellipse are unequal intervals at three points.

FIG. 47 is a plan view of a compound ellipse when the major axes of the ellipse are unequal intervals at five points.

FIG. 48 is a plan view of a compound ellipse when the major axes of the ellipse are unequal intervals at six points.

FIG. 49 is a plan view of a compound ellipse when the major axes of the ellipse are unequal intervals at eight positions.

FIG. 50 is a perspective view of the present invention in which the columnar body of the present invention is formed into a quadrangle to form a beam, and the beams are separated from each other before caulking and fixing.

FIG. 51 is a perspective view of the present invention in a state where the columnar body of the present invention is formed into a quadrangle to form a column, and the columns are separated from each other before caulking and fixing.

[Explanation of symbols]

 A ... Complex elliptical projection body B ... Complex elliptical groove body 1 ... Columnar body 2 ... Complex elliptical projection portion 5 ... Complex elliptical groove portion 3 ... Inner groove 6 ... Outside groove 10 ... Curing adhesive 11 ... Reinforcement Ring 11a ... Annular protrusion 12 ... Ring 13 ... Bolt

Claims (26)

[Claims] 1. A composite elliptical projection having a composite elliptical projection at one end of a columnar body, and a composite elliptical groove having a composite elliptical groove at the other end of another columnar body, An inner groove is formed on the compound elliptical protrusion and an outer groove is formed on the compound elliptical groove on at least one side, and the major axis of the compound ellipse is formed at three or more equal intervals all around the circumference. A columnar joint device, characterized in that the protrusion is inserted into the compound elliptical groove and then caulked and fixed. 2. The columnar joint device according to claim 1, wherein the composite elliptical projection body and the composite elliptical groove body are made of the same hardness material. 3. A composite elliptical projection body having a composite elliptical projection at one end of a columnar body, and a composite elliptical groove body having a composite elliptical groove at the other end of another columnar body, An inner groove is formed on the composite elliptical projection, and the composite elliptical projection is made of a hard material,
The composite elliptical groove body is made of a relatively soft material, the major axis of the composite elliptical shape is formed at three or more equal intervals around the entire circumference, and the composite elliptical projection is inserted into the composite elliptical groove portion and then caulked. A columnar joint device characterized in that 4. The flat groove shape according to claim 3, wherein a plurality of flat chevron shapes are formed in the inner groove of the compound elliptical projection so that the major axis portion of the ellipse is slightly elevated from other portions. Columnar joint device. 5. The columnar joint device according to claim 3, wherein a reinforcing ring is provided on the outer periphery of the composite elliptical groove portion body side. 6. The columnar joint device according to claim 5, wherein the outer periphery of the composite elliptical groove portion body side is held by a plurality of reinforcing rings with annular protrusions. 7. The columnar joint device according to claim 5, wherein a plurality of rings are interposed between the outer periphery of the composite elliptical groove portion side and the reinforcing ring. 8. A composite elliptical projection having a composite elliptical projection at one end of a columnar body, and a composite elliptical groove having a composite elliptical groove at the other end of another columnar body, An outer groove is formed in the composite elliptical groove, the composite elliptical projection body is made of a relatively soft material, the composite elliptical groove body is made of a hardness material, and the composite elliptical major axis is provided at three or more locations around the entire circumference. A columnar joint device, characterized in that it is formed at equal intervals, and the composite elliptical projections are inserted into the composite elliptical groove and then fixed by caulking. 9. The outer groove of the composite elliptical groove portion according to claim 8, wherein a plurality of flat chevron shapes are formed so that a major axis portion of the ellipse is slightly elevated from other portions. Columnar joint device. 10. A composite elliptical projection having a composite elliptical projection at one end of a columnar body, and a composite elliptical groove having a composite elliptical groove at the other end of another columnar body, An inner groove is formed on the compound elliptical protrusion, an outer groove is formed on the compound elliptical groove, and a major axis of the compound ellipse is formed at three or more equal intervals around the entire circumference. A columnar joint device, characterized in that the joint is inserted into the composite elliptical groove portion and then caulked and fixed. 11. The joint device for a columnar body according to claim 10, wherein the composite elliptical groove is filled with a hardening cement. 12. The columnar joint device according to claim 1, wherein the compound elliptical projection is fixed to the compound elliptical groove from the outer peripheral surface side by a plurality of bolts. 13. A composite elliptical projection having a composite elliptical projection on one end of a columnar body, and a composite elliptical grooved body having a composite elliptical groove on the other end of another columnar body, An inner groove is formed on the compound elliptical projection and an outer groove is formed on the compound elliptical groove on at least one side, and the major axis of the compound ellipse is formed at three or more non-equidistant intervals over the entire circumference. A columnar joint device, characterized in that the protrusions are inserted into the composite elliptical groove and then caulked and fixed. 14. The columnar joint device according to claim 13, wherein the composite elliptical projection and the composite elliptical groove are made of the same hardness material. 15. A composite elliptical projection having a composite elliptical projection at one end of a columnar body, and a composite elliptical groove having a composite elliptical groove at the other end of another columnar body, An inner groove is formed on the composite elliptical projection, the composite elliptical projection is made of a hard material, the composite elliptical groove is made of a relatively soft material, and the composite elliptical major axis is located at three or more locations around the entire circumference. A columnar joint device, characterized in that the joint ellipsoidal projections are formed at unequal intervals, and the composite elliptical projections are inserted into the composite elliptical groove and then fixed by caulking. 16. The flat groove shape according to claim 15, wherein a plurality of flat chevron shapes are formed in the inner groove of the composite elliptical projection so that the major axis portion of the ellipse is slightly elevated from other portions. Columnar joint device. 17. The columnar joint device according to claim 15, wherein a reinforcing ring is provided on an outer periphery of the composite elliptical groove portion body side. 18. The columnar joint device according to claim 17, wherein the outer periphery of the composite elliptical groove portion body side is held by a plurality of reinforcing rings with annular protrusions. 19. The columnar joint device according to claim 17, wherein a plurality of rings are interposed between the outer periphery of the composite elliptical groove portion body side and a reinforcing ring. 20. A composite elliptical projection body having a composite elliptical projection at one end of a columnar body, and a composite elliptical groove body having a composite elliptical groove at the other end of another columnar body, An outer groove is formed in the composite elliptical groove, the composite elliptical projection body is made of a relatively soft material, the composite elliptical groove body is made of a hardness material, and the composite elliptical major axis is provided at three or more locations around the entire circumference. A columnar joint device, characterized in that the joint devices are formed at unequal intervals, and the composite elliptical projections are inserted into the composite elliptical groove parts and then caulked and fixed. 21. The flat groove shape according to claim 20, wherein the outer groove of the composite elliptical groove portion is formed with a plurality of flat chevron shapes in which a major axis portion of the ellipse is slightly elevated from other portions. Columnar joint device. 22. A composite elliptical projection body having a composite elliptical projection at one end of a columnar body, and a composite elliptical groove body having a composite elliptical groove at the other end of another columnar body, An inner groove is formed on the compound elliptical projection, and an outer groove is formed on the compound elliptical groove, and the major axis of the compound ellipse is formed at three or more locations at non-equidistant intervals. A joint device for a columnar body, characterized in that the portion is inserted into the composite elliptical groove portion and then caulked and fixed. 23. The columnar joint device according to claim 22, wherein a hardening cement is filled in the composite elliptical groove. 24. The joint device for a columnar body according to claim 13, wherein the composite elliptical projection body is fixed by a plurality of bolts from the outer peripheral surface side of the composite elliptical groove body. 25. A composite elliptical projection having a composite elliptical projection on one end of a columnar body, and a composite elliptical grooved body having a composite elliptical groove on the other end of another columnar body, An inner groove is formed on the compound elliptical protrusion and an outer groove is formed on the compound elliptical groove on at least one side, and the major axis of the compound ellipse is formed at three or more equal intervals all around the circumference. The protrusion is inserted into the composite elliptical groove, then rotated within about 60 degrees relative to each other, and then the composite elliptical protrusion and the composite elliptical groove are caulked and fixed, and one of the thick portions on the other side is inserted into the groove. Part is press-fitted, about 1
A method for manufacturing a columnar joint device, characterized in that caulking is performed for approximately 80 degrees. 26. A composite elliptical projection body having a composite elliptical projection at one end of a columnar body, and a composite elliptical groove body having a composite elliptical groove at the other end of another columnar body, An inner groove is formed on the compound elliptical projection and an outer groove is formed on the compound elliptical groove on at least one side, and the major axis of the compound ellipse is formed at three or more non-equidistant intervals over the entire circumference. Insert the protuberance into the compound elliptical groove, then rotate each other within about 60 degrees,
After that, the composite elliptical protrusion and the composite elliptical groove are caulked and fixed, and a part of the thick portion on the other side is press-fitted into the groove to obtain about 1
A method for manufacturing a columnar joint device, characterized in that caulking is performed for approximately 80 degrees.