JP2003306000A - Structure of connection - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure of connection which can simplify connection work. <P>SOLUTION: A member 50 having an opening 51 in an end part and an elastic cap 54 which is formed by cutting an extrusion-molded body 52 having an approximately π-shaped cross section in a length to be press-fitted into an opening 52, with both side pieces 53 warped outward, are provided. Unevenness 14 is formed in the extension direction of both side pieces 53 on the surfaces of both side pieces 53, and unevenness 12 is formed in the circumferential direction on one opposite surface of the inside surface of the member 50. The opening 51 can be closed simply by press-fitting the opening 51 by both side pieces 53 of the cap 54, and the cap 54 can be produced simply. Since the unevenness 12 and the unevenness 14 are crushed and bonded together by engagement, strong bonding force is obtained. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure for applying a cloth covering frame for covering cloth such as a canvas of a painting or a corner of a frame, and a connecting structure applied to a building material or the like.

[0002]

2. Description of the Related Art Conventionally, after inserting a joint between a pair of connected members having a hollow connecting portion, the hollow connecting portion is pressed by a press to fix the joint, or a screw is passed through the connected member and the joint. A hole was made and the member to be connected was fixed with a screw.

[0003]

However, there is a drawback that the connecting work for connecting the members to be connected by the joint becomes complicated. Therefore, an object of the present invention is to provide a connecting structure that can simplify the connecting work.

[0004]

According to a first aspect of the present invention, there is provided a plurality of members to be connected, each of which has a connecting hollow portion on its opposite surface, and an extrusion-molded hollow body can be press-fitted into the connecting hollow portion. And an elastic joint that is formed by cutting into a length and inserts the end portion into the connecting hollow portion.

According to the connecting structure of the first aspect, one of the end portions of the joint of the hollow body is press-fitted into the connecting hollow portion of one connected member, and the other end portion of the joint is connected to the other connecting member. When the connection member is press-fitted into the connection hollow portion, the plurality of connection target members are connected by the joint. In this case, since the joint is formed by cutting the extruded hollow body into a length that can be press-fitted into the connecting hollow portion, the joint hollow when press-fitting the end of the joint into the connecting hollow portion. Since some elasticity can be obtained by the part, it is easier to press fit compared to a joint without a hollow part, and due to its elasticity, it can be closely fitted to the connecting hollow part without rattling and a strong coupling force can be obtained. Therefore, the work of connecting the members to be connected can be simplified. Further, since the joint is formed by cutting an extruded product, it is easy to manufacture.

According to a second aspect of the present invention, in the connecting structure according to the first aspect, at least one of both side surfaces of the end portion of the joint is formed into a convex curved surface. According to the connecting structure of claim 2, in addition to the effect of claim 1, by press-fitting the joint into the connecting hollow portion, the convex curved surface is elastically deformed and comes into close contact with the inner surface of the connecting hollow portion. Coupling force is obtained.

According to a third aspect of the present invention, there is provided the connection structure according to the first aspect, wherein mountain-shaped irregularities are formed on at least one of the connection hollow portion and the contact portion of the joint. According to the connection structure of claim 3, in addition to the effect of claim 1,
When the concavo-convex shape is formed on only one of the connecting hollow portion and the joint, the joint can be easily press-fitted, and a strong joining force can be obtained by pressing the tip of the protrusion against the surface on the opposite side.
When unevenness is formed on the connecting hollow part and the joint,
A strong binding force is obtained by engaging the convex tips.

According to a fourth aspect of the present invention, in the connecting structure according to the first aspect of the present invention, the joints form three or more radial bodies. According to the connection structure of the fourth aspect, in addition to the effect of the first aspect, it is possible to radially connect three or more connected members. According to a fifth aspect of the present invention, in the connecting structure according to the first aspect, the second aspect or the third aspect, the facing surfaces of the connected members are inclined so that the connected members are connected at a right angle, and the joint is substantially L-shaped. In addition, it has a reinforcing member at its corner, and both end surfaces are inclined so as to be flush with the facing surface in a direction substantially orthogonal thereto.

According to the connecting structure of claim 5, in addition to the effect of claim 1, claim 2 or claim 3, the member to be connected together with the joint can be easily manufactured by extrusion molding, and the reinforcing member. As a result, the strength of the joint can be increased, and the wall thickness of the joint can be reduced. Further, since the surfaces of the hollow body corresponding to both ends of the joint are flush with each other, by supporting this surface on the support surface, the cutting work for cutting the hollow body can be stably performed, and the work is safe and easy. It becomes easy to press both ends of the joint into the connecting hollow part.

According to a sixth aspect of the present invention, in the fifth aspect, the reinforcing member is formed at a position apart from the facing surface of the member to be connected. According to the connection structure of claim 6, in addition to the effect of claim 5, when the members to be connected are connected in a frame shape to form a cloth-covered frame such as canvas, loose cloth is stretched after the cloth is stretched. For,
Although the space between the connected members is widened, the reinforcing member does not interfere with the padding that is present in the gap between the connected members in order to prevent the connected members from moving in the direction of narrowing the space.

According to a seventh aspect of the present invention, there is provided the connecting structure according to the fifth or sixth aspect, wherein a reinforcing member that forms a connecting tubular portion is provided at a position that is the center of the joint. According to the connection structure of claim 7, claim 5 or claim 6
In addition to the effect of (1), another jointed member can be coupled by coupling another joint to the coupling cylinder portion, which is highly versatile.

The connecting structure according to claim 8 is formed by cutting a member having an opening at its end and an extrusion-molded substantially π-shaped cross-section into a length that can be press-fitted into the opening, so that both side pieces face outward. And a cap having elasticity that is convexly curved. According to the connection structure of claim 8,
By press-fitting the opening with both side pieces of the cap, the opening can be easily closed and the cap can be easily manufactured.

According to a ninth aspect of the present invention, there is provided a connecting structure which is formed by extruding a pair of connected members which have connecting hollow portions at their respective ends and are adjacent to each other so that the connecting hollow portions face in the same direction. A hollow body having an inverted U-shaped cross section and having hollow portions on both side pieces is formed by cutting the hollow body into a length capable of being press-fitted into the connecting hollow portion, so that the side portions of the both side pieces have an outward convex curved elasticity. And a joint having the same.

According to the ninth aspect of the connection structure, the connected members can be connected easily and reliably by press-fitting both side pieces of the joint into the ends of the pair of adjacent connected members. Manufacture of joints is facilitated. Claim 10
The connection structure described is formed by cutting a pair of connected members adjacent to each other having a groove portion on the surface adjacent to the side portion and an extrusion-molded substantially U-shaped cross section to a predetermined length. And a joint in which a side piece is press-fitted into the groove.

According to the connecting structure of the tenth aspect, a pair of adjacent members to be connected can be easily connected,
The connected member can be applied to a floor material and the like, and the joint can be easily manufactured. The connection structure according to claim 11 is the connection structure according to claim 1.
No. 0, both side pieces of the joint have hollow portions, and the side portions are bent outwardly and have elasticity.

According to the eleventh aspect of the connection structure, in addition to the effect of the tenth aspect, a strong coupling force is achieved by elastically deforming the side portions of the joint which are curved outwardly convexly by press-fitting both side pieces. Obtainable. According to a twelfth aspect of the present invention, there is provided a connecting structure comprising a pair of connected members facing each other with grooves on the surface of a side portion, and a flat hollow body which is extruded and at least one surface of which is bent outwardly in a convex shape in a width direction. And an elastic joint formed by cutting into a predetermined length and press-fitting both ends into the groove.

According to the connecting structure of the twelfth aspect, a pair of adjacent members to be connected can be easily and surely connected, the members to be connected can be applied to a floor material and the like, and the joint can be easily manufactured. become. The connection structure according to claim 13 is
In claim 8, claim 9, claim 10, claim 11 or claim 12, unevenness is formed on the contact surface of at least one of the joint and the connected member.

According to the connecting structure of claim 13, in addition to the effect of claim 8, claim 9, claim 10, claim 11 or claim 12, unevenness is formed on only one of the contact surfaces. As a result, the joint can be easily press-fitted and the convex tip is pressed against the contact surface to obtain a strong coupling force. When both the contact surfaces have irregularities, the convex tips engage with each other to obtain a strong bonding force.

The connection structure according to claim 14 is the connection structure according to claim 8 or
In claim 9, claim 10, claim 11 or claim 12, the joint is integrally provided at the tip of the column portion of the inverted T-shaped section member. According to the connecting structure of claim 14, in addition to the effect of claim 8, claim 9, claim 10, claim 11 or claim 12, since the member having an inverted T-shaped cross section can be fixed to the base material, Secures securely.

According to a fifteenth aspect of the present invention, there is provided a connecting structure, comprising a plurality of plate members which have a notched surface on at least one of a back surface side of one side portion and a front surface side of the other side portion and which are jointed to each other. A convex portion projecting in the front-back direction is formed on one of the phase cut surfaces, and a concave portion into which the convex portion fits is formed on the other. According to the connecting structure of the fifteenth aspect, a large number of plate materials can be easily and sequentially connected horizontally or vertically in a fixed positional relationship, and each plate material can be easily manufactured by extrusion molding.

According to a sixteenth aspect of the present invention, a connecting structure has a tenon on one side surface and a crushable unevenness is formed on the side surface thereof, and a tenon hole into which the tenon is fitted is provided on the other side surface and the side surface is crushable. It is provided with a plurality of plate members which are formed with concavities and convexities and are spliced to each other. According to the connection structure of claim 16, the plate members can be connected by fitting the protrusions of one plate member into the recesses of another plate member, and the recesses and protrusions have crushable unevenness. Therefore, the binding force increases.

The connection structure according to claim 17 is the structure according to claim 16.
In, the concave portions have mountain-shaped irregularities having a large pitch, and the convex portions are formed with a smaller pitch than the irregularities. According to the connecting structure of the seventeenth aspect, in addition to the effect of the sixteenth aspect, it is easy to press the convex portion into the concave portion.

The connection structure according to claim 18 is the structure according to claim 16.
Alternatively, in claim 17, one of the concave portion and the convex portion has a lower fitting side and a higher height toward the inner side. According to the connection structure of claim 18, claim 16
In addition to the effect of the seventeenth aspect, it is easy to press the convex portion into the concave portion, and a high bonding force can be obtained.

According to a nineteenth aspect of the present invention, there is provided a connecting structure in which at least one of the back surface side of one side portion and the front surface side of the other side portion has a phase cutout surface, and the phase cutout surface is superposed on each phase cutout surface. It is provided with a plurality of plate members that have recesses facing each other in a combined state and are joined together in a discontinuous manner, and a joint fitted between the recesses of the recessed surfaces of the plurality of plate members.

According to the connecting structure of the nineteenth aspect, it is possible to easily connect a large number of plate materials horizontally or vertically in a fixed positional relationship, and to easily manufacture the joint by extrusion molding. A connection structure according to a twentieth aspect is the connection structure according to the nineteenth aspect, wherein the joint is a hollow body, and a side portion is bent outwardly.

According to the connection structure of claim 20, in addition to the effect of claim 19, when the joint is press-fitted into the recess, the curved portion is elastically deformed, so that the joint is easily press-fitted into the recess and the coupling force is increased. it can.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION A cloth tension frame to which a connecting structure according to a first embodiment of the present invention is applied will be described with reference to FIGS. That is, this connecting structure has a plurality of frame pieces 1a to 1d of the cloth-covered frame that are members to be connected, and the joint 2. The plurality of frame pieces 1a to 1d have connecting hollow portions 8 on the opposite surfaces, but as shown in FIG. 2, a frame piece 1a made of an aluminum upper frame and a frame piece 1c made a lower frame.
And the opposing surface 24 at each end is formed as an inclined surface of about 45 degrees so that the adjacent frame pieces 1a to 1d are connected to each other at a right angle.

Each of the frame pieces 1a to 1d is formed by extrusion molding and has the following structure. That is, the cloth tensioning ridge 4 is provided outside the front surface 3, the groove 6 is provided in the range from the outer surface 7 to the back surface 5, and the leg portion 10 of the fixture 9 is provided on the inner surface of the groove 6. It has a collapsible concavo-convex portion 11 that is locked by friction. The rear surface 5 has a protrusion 28 protruding in a V-shaped cross section so as to form an inclined surface 27 continuous with the outer surface 7 of the frame pieces 1a to 1d.
The inclined groove 27 is inclined at a certain angle, and the concave groove 6 is formed on the inclined surface 27. Further, a protrusion 23 for hitting the canvas tensioning pliers 31 is formed on the side opposite to the outer side 7 of the back surface 5, that is, on the inner side surface 25 side as a cloth tension frame, and the protrusion 23 has a hanger attachment hole (Fig. (Not shown). Further, a fabric catching ridge 20 is provided on the slope 27 on the outer surface 7 side of the groove 6. Further, the width dimension of the connecting hollow portion 8 having a square cross section into which the joint 2 is fitted is formed to be substantially equal to the dimension obtained by subtracting the wall thickness from the entire width of the frame piece 1a at the position on the inner side surface 25 side inside the frame piece 1a. is doing. In addition, mountain-shaped irregularities 12 that are arranged in the circumferential direction and whose tops can be crushed are formed on two surfaces of the inner peripheral surface of the connecting hollow portion 8 facing the outer surface 7 and the inner side surface 25. 22 is a concave streak.

The joint 2 is formed by cutting the extruded hollow body 13 into a length capable of being press-fitted into the connecting hollow portion 8 so that both ends in the cutting direction are inserted into the connecting hollow portion 8. The joint 2 of the embodiment has a substantially L-shape formed of, for example, a metal such as aluminum, the width thereof is formed so as to be press fit into the entire width of the connecting hollow portion 8, and the surface of the joint 2 has a bent portion. There are concavities and convexities 14 lined up in the direction of the tip, and the concavities and convexities 14 are formed so that their tops can be crushed. The joint 2 is manufactured simply by extruding a hollow body 13 having an L-shaped cross section and cutting it into a predetermined length in the longitudinal direction. Further, in the embodiment, the reinforcing member 16 is provided in the bent portion inside the hollow portion 26 of the joint 2, and both ends 2a and 2b are inclined so as to be substantially orthogonal to the facing surface 24 and flush with each other. .

When assembling the fabric-clad frame 1, four joints 2 are interposed between the frame pieces 1a to 1d and the frame pieces 1a to 1d.
Assemble all at once by tapping 1d.
At this time, since the contact area is small due to the concavities and convexities 12 and 14, the joint 2 is easily press-fitted into the coupling hollow portion 8, and the joint 2 is press-fitted into the coupling hollow portion 8 so that the concavity and convexity 1 is formed.
The crushing of the tops of 2, 2 can secure the binding force.

The fixture 9 is for fixing the cloth 30 such as canvas which is pressed into the groove 6 and stretched on the surface of the cloth tension frame. The fixing tool 9 includes a leg portion 10 that pierces a cloth 30 stretched on the frame piece 1a and the like and is driven into the groove 6 to be press-fitted and fixed.
It has a head portion 19 that presses the cloth 30 against the surfaces of the frame pieces 1a to 1d. Before press fitting into the groove 6 with the fixture 9, first, the frame piece 1
The cloth 30 is put on the front surface 3 of the cloth tension frame formed by connecting the a to 1d by the joint 2, and the peripheral edge of the cloth 30 is covered with the frame pieces 1a to 1d.
The support projection 32 of the canvas pliers 31 is brought into contact with the ridge 23, and the handle 31a is moved in the direction of the arrow, by the lever principle.
The cloth 30 sandwiched between is pulled along the slope 27. In this state, the leg portion 10 of the fixture 9 is driven into the groove 6 to pierce the cloth 30, and the head portion 19 puts the cloth 30 on the back surface 5 of the frame pieces 1a to 1d.
Since the fabric 30 is pressed against the ridge portion 20 and is pressed against the ridge portion 20, the fabric 30 is stretched so as to be flat in a state in which the center side of the fabric 30 is pulled toward the peripheral edge and is supported by the ridge portion 4 for upholstering. Further, since the unevenness 11 is formed on the inner surface of the groove 6, it is easy to frictionally engage the leg portion 10 of the fixing tool 9 only by press fitting the fixing tool 9. The material of the fixture 9 is preferably softer than that of the fabric-clad frame 1, but when the material is harder than the frame pieces 1a to 1d, such as iron, the convex portions of the unevenness 11 may be crushed and locked.

In FIG. 2, reference numeral 21 is a reinforcing bar. Figure 3
In the above, reference numeral 33 denotes a suspender screwed into a suspender attachment hole formed in the protrusion 23, and a cloth tension frame can be hung on a wall surface or the like by passing a string or the like through the suspender. 34 is a reinforcing bar 21
It is a crosspiece to attach the end of. The fixture 9 is not limited to the above-mentioned structure, and may be, for example, a rod-shaped elastic body, which is press-fitted into the groove 6 to fix the cloth 30.

According to this embodiment, one end 2a of the joint 2 in the cutting direction of the hollow body 13 is press-fitted into the connecting hollow portion 8 of the frame piece 1a, which is the member to be connected, and the other end 2b of the joint 2 is inserted. Is press-fitted into the connecting hollow portion of the frame piece 1b which is the member to be connected,
The frame pieces 1 a and 1 b are connected by the joint 2. in this case,
The joint 2 has a hollow portion 8 for connecting the hollow body 13 formed by extrusion.
Since it is formed by cutting into a length that can be press-fitted into the joint 2, when the one end 2a of the joint 2 is press-fitted into the connecting hollow portion 8, some elasticity can be obtained by the hollow portion 26 of the joint 2. Compared to the joint without the portion 26, the press-fitting is easier, and due to its elasticity, the connecting hollow portion 8 can be closely fitted without rattling and a strong coupling force can be obtained. A strong binding force can be obtained by engaging the crushed state. Therefore, the work of connecting the frame pieces 1a to 1d, which are the members to be connected, can be simplified.

The connecting hollow portion 8 has a square cross section, has irregularities 12 arranged in the circumferential direction on the inner peripheral surface thereof, and the joint 2 is substantially L-shaped, and the surface thereof extends from the bent portion toward the tip. Since it has the concavities and convexities 14 arranged side by side, the frame piece 1 together with the joint 2
A and the like can also be easily manufactured by extrusion molding.
In addition, the joint 2 supports the reinforcing member 16 that supports the hollow portion 26 in the hollow portion 26.
Because of the above, the strength of the joint 2 can be increased and the wall thickness of the joint 2 can be reduced.

Further, the members to be connected are frame pieces 1a to 1d forming each side of the cloth-clad frame, and the facing surfaces 24 at both ends are inclined at about 45 degrees so that they are connected at a right angle, and the joint 2 has both ends. Both ends 2a, 2a of the joint 2 since the 2a, 2b are inclined in a direction substantially orthogonal to the facing surface 24 and are flush with each other.
Since the surface of the hollow body 13 corresponding to 2b is flush, by supporting this surface on the support surface, the cutting operation for cutting the hollow body 13 can be stably performed, and the work is safe and easy. Further, both ends 2a and 2b of the joint 2 can be easily press-fitted into the connecting hollow portion 8.

Further, the leg portions 19 of the fixing tool 9 are frictionally locked to the concave and convex portions 11 in the concave groove 6 so as not to be pulled out, and the head portion 19 can press and fix the cloth 30 on the back surface 5.
Further, a protrusion 28 is formed so that the back surface 5 of the frame pieces 1a to 1d forms a slope 27 that is continuous with the outer side surface 7 of the frame pieces 1a to 1d, and the concave groove 6 is formed in the slope 27. The ridge 3 with which the canvas pliers 31 come into contact with the side 7 and the opposite side
Since the groove 1 is formed on the inclined surface 27, the groove 9 is formed on the inclined surface 27 so that the fixture 9 is hard to see from the front side and the appearance is improved. In addition, pliers 3 on the protrusion 23 for pliers
The support protrusion 32 of No. 1 is supported and the cloth 30
Can be easily and sufficiently stretched on the slope 27, and the ridges 23 that support the support protrusions 32 of the pliers 31 project linearly. Moreover, when the cloth 30 is tensioned, the groove 6 is formed.
It is easy to fix the fixture 9 to the.

Further, since the protruding portion 23 has the hanging tool mounting hole, it is possible to easily hang the cloth tension frame on the wall surface or the like by mounting the hanging tool 33 in the hanging tool mounting hole.
Further, since the slanted surface 27 on the outer side surface 7 side of the recessed groove 6 has the cloth catching projections 20, the cloth catching projections 20 are formed.
By pressing the cloth 30 with the head 19 of the fixture 9 in the vicinity of the cloth 30, the cloth 30 can be caught in the protruding portion 20, so that the cloth 30 is less likely to loosen and the existence of the protruding portion 20 makes The head 19 has frame pieces 1a to 1d
Is difficult to see from the front side of the.

Further, the width of the joint 2 is set so that it can be press-fitted into the entire width of the connecting hollow portion 8 formed within the range obtained by subtracting the wall thickness from the inner width of the frame pieces 1a to 1d. Therefore, rattling of the frame pieces 1a to 1d can be easily suppressed. In the present invention, the chevron-shaped irregularities 12 and 14 may be provided on at least one of the frame pieces 1a to 1d and the joint 2 which are connected members. Further, the unevenness 12 may be provided on all or part of the inner peripheral surface of the frame piece 1a or the like, and the unevenness 14 of the joint 2 may be provided on all or part of the surface.

In each of the above embodiments, the frame piece 1 is used.
Although the connection structure of the corner portions of a to 1d is used, a linear joint can be applied when the members to be connected are linearly connected. Further, it can be applied to a window or door frame as a building material. FIG. 5 shows a second embodiment of the present invention.
Through FIG. That is, in this coupling structure, the joint 2 is different from that in the first embodiment. In FIG. 5, at least one of both side surfaces of the end of the joint 2, that is, a convex curved surface 2c that is convexly curved toward the L-shaped inward side of the joint 2 is formed, and a mountain-shaped unevenness 14 is formed on the convex curved surface 2c. Further, the reinforcing member 16a is a frame piece 1a, 1 which is a member to be connected.
is formed at a position away from the contact position of the facing surface 24 of b,
In particular, a pair of reinforcing members 16a forms a square connecting tubular portion 36 at the center of the joint 2, and a large number of concavities and convexities 37 are formed on one opposing surface of the inner surface of the connecting tubular portion 36.
About three unevennesses 38 are formed. This joint 2 is also formed by extrusion molding.

FIG. 6 shows a frame piece 1 for tensioning the cloth.
An external force is applied to a and 1b as indicated by arrow P, so that the frame pieces 1a and 1b
A gap 41 is formed between the padding 4 and the gap 4 so as to maintain the gap 41.
0 is interposed. This padding 40 is connected to the connecting tube portion 36.
Located inside. FIG. 7 shows a linear joint 2'on the connecting tube portion 36.
An example of press-fitting is shown. The joint 2'is formed by cutting an extruded hollow body into a length that can be press-fitted into the connecting hollow portion 8 and has an elastic straight line for inserting the end portion into the connecting hollow portion 8 of the frame piece 1e. Both sides of the joint are curved outwardly to form a convex curved surface 2c, and the surface has irregularities 14. Also, the frame piece 1a
Further, a notch 8a is formed in the frame piece 1b (not shown) facing the cutout 8a so as to allow the connecting tubular portion 36 to escape. Reference numeral 1e is another connected member in the shape of a rectangular tube having a connecting hollow portion 8 into which the linear joint 2'is press fitted.

FIG. 8 shows a three-dimensional frame body formed by connecting the connected members 1e between the pair of frames 1A and 1B formed by the rectangular tubular frame pieces 1a to 1d by the connecting method as shown in FIG. It shows the state. Other configurations are similar to those of the first embodiment. According to the second embodiment, by press-fitting the joint 2 into the connecting hollow portion 8, the convex curved surface 2c elastically deforms and adheres to the inner surface of the connecting hollow portion 8, so that a strong coupling force is obtained. To be Further, since the chevron-shaped concavo-convex portion 14 is formed in the contact portion of the connecting hollow portion 8 and the joint 2, a strong coupling force can be obtained by engaging the tip ends of the convex portions.

Further, since the reinforcing member 16a is formed at a position apart from the contact position of the facing surface 24 of the frame pieces 1a and 1b, which are the members to be connected, the frame pieces 1a to 1d are connected in a frame shape, for example, canvas. When a cloth tension frame is formed, the cloth 30 is stretched, and the cloth 30 loosened by moisture or the like is stretched again. Therefore, the intervals between the frame pieces 1a to 1d are widened as indicated by an arrow P in FIG. . At this time, the frame pieces 1a to 1d
The padding 40 is interposed in the gap between the frame pieces 1a to 1d in order to prevent the padding from moving in the direction of narrowing the gap, but the reinforcing member 16a does not interfere with the padding 40.

Further, since the linear joint 2'can be press-fitted into the connecting cylinder portion 36 and another connecting member 1e having the connecting hollow portion 8 which is press-fitted into the joint 2'can be provided, versatility can be provided. In addition, a three-dimensional frame body as shown in FIG. 8 can be formed. Further, a strong coupling force can be obtained by the unevenness 14 and the unevennesses 37, 38 formed on the surface of the joint 2 '.

Besides, there are the same operational effects as those of the first embodiment. As a modification, the concavo-convex portions 12 and 14 may be formed on only one of the connecting hollow portion 8 of the frame pieces 1a to 1d and the joint 2. In this case, the joint 2 can be easily press-fitted, and the tip of the convex portion is A strong bonding force can be obtained by press-contacting the opposite surface. As another modification, unevenness 1
2, 2 and 14 may be omitted. Similarly, the joint 2'and the connecting tubular portion 3
Also in the contact portion with 6 and the member to be connected 1e, the concavities and convexities 14, 37, 38 and the like may be provided on at least one of them, or may not be provided at all.

A third embodiment of the present invention is shown in FIGS. 9 to 11. That is, this connecting structure is different from the first and second embodiments in that the frame pieces 1a to 1d are mainly cylindrical and the ends are cut at right angles. FIG. 9 shows the joint 2 shown in FIG. 8 and the frame pieces 1a and 1b whose ends are cut at right angles to the longitudinal direction. The frame piece 1a and the like are also extrusion-molded and the unevenness 12 is formed on the inner surface, but the unevenness 12 may be omitted.

FIG. 10 shows the frame piece 1b, and a notch 44 is formed at the opening edge thereof. As shown in FIG. 9, one end side of the joint 2 is press-fitted into the connecting hollow portion 8 of the frame piece 1 b and the other end side of the joint 2 is projected from the notch 44. FIG. 11 shows a state in which a frame such as a fabric-covered frame is formed by combining the frame pieces 1a to 1d by such a coupling method.

The other structure is common to the first and second embodiments, and has the same effects as these. The fourth embodiment of the present invention is shown in FIG. That is, this connecting structure is the same as that of the first to third embodiments.
The shape of the joint 2 is different from that of the above embodiment. The joint 2 is formed by cutting the extruded hollow body 46 into a length that can be press-fitted into the connecting hollow portion of the member to be connected (not shown), and inserts the end portion into the connecting hollow portion. Is to have. In this case, the member to be connected (not shown) is linearly formed instead of being L-shaped as in the first embodiment. This joint 2 is provided with a stopper 45 at the center, and an outwardly convex curved surface 2c is formed on one side from the center to both ends. In addition, unevenness 14 is formed on both side surfaces of the joint 2.

Although the stopper 45 locks the end of the member to be connected, it may be omitted. 5th of this invention
An embodiment of the above is shown in FIG. That is, in this connection structure, the joint 2 is formed of three radial bodies,
It is T-shaped as a whole. Square pipe-shaped connected members 1f and 1g having a connecting hollow portion 8 are connected to the respective pieces of the joint 2. The joint 2 has a convex curved surface 2c in which the lower side of both shoulder portions and both sides of the leg portion are curved outwardly convexly, and a concavo-convex portion 14 is formed on the surface thereof, and a reinforcing member 16a is provided in the center to form a connecting tubular portion. 36 is formed, and the joint 2 is formed by extrusion molding. Further, although the connected members 1f and 1g are cut at right angles at the ends, the connected member 1f that is coupled to the shoulder forms a notch 8b for escaping the leg portion, and has an uneven surface 12 on one opposite surface of the inner surface. Are also formed by extrusion molding.

FIG. 14 shows a sixth embodiment of the present invention. That is, this connection structure is an example in which three or more joints 2, that is, four joints 2 are extruded in a cross shape. Form a convex curved surface 2c curved outwardly on one side of each part,
In addition, the unevenness 14 is formed on the surface, and the connecting cylindrical portion 36 is formed in the central portion by the reinforcing member 16a, and the unevenness 3 is formed on the inner surface thereof.
7 and 38 are formed.

According to this embodiment, four connected members (not shown) can be connected. Further, as a modified example of this embodiment, it is possible to form four or more radial joints, and it is possible to radially connect the members to be connected. A seventh embodiment of the present invention is shown in FIG. That is, this connecting structure is formed by cutting a rectangular tubular member 50 having an opening 51 at its end and extruded, and an extruded substantially π-shaped cross section 52 into a length that can be press-fitted into the opening 51. The elastic cap 54 in which both side pieces 53 are formed with a convex curved surface 2c that is curved outwardly convexly
It has and. After forming the cap 54 by cutting the substantially π-shaped body 52 in cross section, the upper plate portion 55 is larger than the inner width of the opening 51, and the both side pieces 53 are press fit into the opening 51. Both sides 53 in the longitudinal direction of
Both side parts 5'are cut by cutting out both end parts 53 'with a predetermined width.
3 is formed narrowly. Further, the unevenness 14 is formed on the surface of the both-side piece 53 in the extending direction of the both-side piece 53, and the unevenness 12 in the circumferential direction is formed on one opposite surface of the inner peripheral surface of the member 50.

When the cap 54 is press fitted into the opening 51,
Both side pieces 53 are elastically deformed and press-fitted into the opening 51, and the unevenness 14 of the curved surface crosses the unevenness 12 of the inner peripheral surface and slides, so that it is easy to press-fit, and the unevenness 12 and 14 are engaged with each other. Since it is crushed and bonded, a strong bonding force is obtained. According to the seventh embodiment, the opening 51 is provided in the cap 5
By press-fitting with both side pieces 53 of 4, the opening 51 can be easily closed and the cap 54 can be easily manufactured.

It should be noted that the irregularities 12 and 14 may be either one or both. The eighth embodiment of the present invention is shown in FIG. That is, this connecting structure has a connecting hollow portion 8 at each end, and is extruded with a pair of connected members 50a, 50b adjacent to each other so that the connecting hollow portion 8 faces in the same direction. It is formed by cutting a hollow body 57 having an inverted U-shaped cross section and having a hollow portion 56 on both side pieces 54 into a length that can be press-fitted into the connecting hollow portions 51a and 51b so that the side portions of both side pieces are convex outward. An elastic joint 2 having a curved curved surface 2c is provided. In the joint 2, the convex curved surface 2c is formed on the outer side portion of the both side pieces 54, and the unevenness 14 is formed on each surface of the both side pieces 54.

The members to be connected 50a, 50b are in the shape of a rectangular tube, and the guide ridges 58 for forming the connecting hollow portion 8 are formed inside thereof. In addition, irregularities 12 are formed in the circumferential direction on the inner surfaces of the connecting hollow portions 8 adjacent to each other. These are formed by extruding a metal such as aluminum. Both side pieces 54 of the joint 2 are connected members 50a, 5
When press-fitted between the inner surface having the unevenness 0b of 0b and the guide projection 58, the convex curved surface 2c of the both-side piece 54 is elastically deformed and press-fitted into the connecting hollow portion 8, and the unevennesses 12 and 14 mesh with each other to join. To be done.

According to the eighth embodiment, both side pieces of the joint 2 are press-fitted into the ends of the pair of adjacent members 50a, 50b adjacent to each other to simply and reliably connect the members 50.
A and 50b can be connected, and the joint 2 can be easily manufactured. It should be noted that only one of the irregularities 12 and 14 may be provided, or neither of them may be provided.

FIG. 17 shows a ninth embodiment of the present invention. That is, in this connecting structure, a pair of connected members 60 (one of which is not shown) adjacent to each other having a groove portion 65 on a surface adjacent to a side portion, and an extrusion-molded substantially U-shaped body 61.
Each side piece 6 is formed by cutting the
4a is press-fitted into the groove 65. Further, the joint 64 is integrally provided at the tip of the column portion 63 of the inverted T-shaped member 62 in cross section.

The member 60 to be connected is formed into a flat plate in cross section by extrusion molding and cut to a predetermined size at the cutting position 60a. The joint 64 is also formed by extrusion and has an inverted T-shaped section 6
It is integrally formed with the member 2, and is cut at a cutting position 61a to a predetermined length with a shorter dimension than the connected member 60. A mounting hole 66 is formed in the lower plate of the inverted T-shaped member 62 in cross section.
Further, the concavities and convexities 14 and 12 are formed on both surfaces of both side pieces 64 a of the joint 64 and on the inner side surface of the groove portion 65, respectively. In this case, the concavities and convexities on the groove portion 65 side are made large, and the concavities and convexities on both side pieces 64 side are made small to facilitate press fitting.

According to the ninth embodiment, one joint 6
4 or the groove portion 65 of the connected member 60, the groove portion 65 is press-fitted into one side piece 64a of the plurality of joints 64 arranged in the longitudinal direction, and the groove portion 65 of another connected member 60 is press-fitted into the other side piece 64a. The connecting member 60 is connected by the joint 64, and the connected member 6
The connection of 0 forms a flat surface such as a floor surface. In this case, the pair of connected members 60 adjacent to each other can be easily connected, the connected member 60 can be applied to a floor material, and the joint 64 can be easily manufactured.

As for the irregularities 12 and 14, only one of them may or may not be provided as in the eighth embodiment. A tenth embodiment of the present invention is shown in FIG. That is, this connection structure is
In the ninth embodiment, both side pieces 64a of the joint 64 have a hollow portion 64b, and the side portion has a convex curved surface 2c that is curved outwardly and has elasticity.

According to the tenth embodiment, the convex curved surface 2c of the joint, which is bent outwardly convexly, is elastically deformed by press-fitting the both side pieces 64a into the groove portion 65 to obtain a strong coupling force. You can Also, an inverted T-shaped member 6 in cross section
Since 2 can be fixed to the base material, the connected member 60 can be fixed securely. The eleventh embodiment of the present invention is shown in FIG. That is, this connecting structure has a groove 65 on the side surface.
And a flat hollow body 61 having a pair of connected members 60 '(one of which is not shown) opposed to each other and a convex curved surface 2c which is extruded and at least one surface of which is curved outwardly in the width direction. ′ Is formed by cutting it into a predetermined length, and elastic joints 64 ′ whose both ends are press-fitted into the groove portion 65 are provided. The connected member 60 ′ is in the form of an extruded flat plate, cut into a predetermined length, and the unevenness 14 is formed on the inner surface of the groove 65. The joint 64 'is attached to the inverted T-shaped member 62, the convex surface 2c is formed on the upper surface of the joint 64', and the unevenness 12 is formed on the surface thereof.

According to the eleventh embodiment, the joint 64 '.
The groove portion 65 of one connected member 60 'is press-fitted to one end of the
The groove portion 65 of the other connected member 60 'is press-fitted to the other end of the joint 64' to thereby connect the pair of connected members 60 ',
A floor or the like is formed. In this case, the pair of adjacent members 60 'to be connected can be simply and surely connected, and the joint 64' can be easily manufactured.

Other parts common to those of the ninth embodiment are designated by the same reference numerals. Further, the configurations of the irregularities 12 and 14 are similar to those of the ninth embodiment and its modification. A twelfth embodiment of the present invention is shown in FIGS. That is, this connecting structure is provided with the non-facet surface 7 on at least one of the back surface side of one side portion and the front surface side of the other side portion.
A plurality of plate members 7 having 0, 71 and mutually intermittently spliced
2, 72 '. The plate member 72 has the notched faces 70, 7
1 and the plate member 72 ′ has an offset surface 70 or an offset surface 7
It has any one of 1. The convex portion 7 protruding in the front-back direction on one of the companion surfaces 70, 71, that is, the companion surface 70
A concave portion 74 which forms the third groove 3 and into which the convex portion 73 is fitted is formed on the other side, that is, the phase cutout surface 71. In addition, each plate member 72, 72 '
Has a mounting hole 75, and a screw 76 is passed through the mounting hole 75 to be mounted on a base material (not shown).

As shown in FIG. 21, the concave portions 74 have mountain-shaped irregularities 14 with a large pitch, and as shown in FIG. 22, the convex portions 73 have irregularities 12 with a smaller pitch than the irregularities 14, and the irregularities 12 Is formed longer than the unevenness 14. FIG. 23 is a partially enlarged view of the convex portion 73 press-fitted into the concave portion 74. The peaks and valleys of the concave and convex portions 14 of the concave portion 74 have a base a of 1 mm and a height h of 1 mm. The size of the mountain is 0.5 mm at the base e and 0.
3 mm, and each top 14a (height d ₂ is 0.
2 mm (shaded area) and 12a (shaded area with height d ₁ of 0.1 mm) are crushed and joined.

According to the twelfth embodiment, a large number of plate members 72, 72 'can be easily connected in a horizontal or vertical direction in a fixed positional relationship, and each plate member 72, 72' can be extruded. Can be easily manufactured. In addition, the concave portion 74 has the mountain-shaped unevenness 14 having a large pitch, and the convex portion 7
Since the unevenness 12 of No. 3 is formed with a smaller pitch than the unevenness 14 of the recess 74, it is easy to press the convex 73 into the recess 74.

As a modified example of this embodiment, as shown in FIG. 24, the concave portion 74 is formed with the ridge 14 on the fitting side of the uneven portion 14 '.
The lower a'is lower and the height is higher toward the inner sides 14b ', 14c', so that the convex portion 73 is easily pressed into the concave portion 74, and a high coupling force is maintained. The peaks of the irregularities 12 of the convex portion 73 may be formed to be higher on the fitting side. Also,
In the twelfth embodiment, the convex portion 73 and the concave portion 74
The concavities and convexities 12 and 14 may or may not be formed on only one of the above. Further, the convex portion 73 may be formed hollow.

A thirteenth embodiment of the present invention is shown in FIG. That is, this connecting structure has a tenon 73 on one side surface and a crushable unevenness 12 formed on the side surface thereof, and a tenon hole 74 into which the tenon 73 fits on the other side surface, and the crushable unevenness 14 on the side surface. And a plurality of plate members 72 that form a tongue and splice each other. The convex portion is formed hollow, and the plate member 72 is formed by extrusion molding. Also, each plate 7
2 is attached to a substrate (not shown) by screws 76.

When the convex portion 73 is press-fitted into the concave portion 74, the unevenness 1
2 and 14 are engaged and coupled. In this case, the irregularities 12, 1
The tops of the mountain 4 are crushed and joined. According to the thirteenth embodiment, the convex portion 73 of one plate member 72 is replaced by another plate member 72.
The plate member 72 can be easily connected to each other by fitting into the concave portion 74, and the concavities and convexities 12 and 14 that can be crushed are formed in the concave portion 74 and the convex portion 73, so that the coupling force is increased.

The concavities and convexities 12 and 14 may be configured as shown in FIG. 21, FIG. 22 or FIG. FIG. 26 shows a fourteenth embodiment of the present invention. That is, this connecting structure has the notched surfaces 70, 71 on at least one of the back surface side of one side portion and the front surface side of the other side portion, and each notched surface 70, 71 has the notched surface 70, 71. A plurality of plate members 72, 72 ′ having recesses 74 facing each other in a state where they are overlapped with each other, and a plurality of plate members 7
2, 72 'and the joint 88 fitted between the recesses 74 of the phase cutout surfaces 70, 71.

In the embodiment, a rising piece 77 is provided on the inner side of the recess 74 of the phase cutout surface 71, and each plate member 7 is provided.
2, 72 'are formed by extrusion molding. Plate material 7
When stacking 2, 72 ', the rising piece 77 and the rear end 71
A waterproof packing 78 is interposed between a and a. Further, a mounting hole 79 through which the mounting screw 76 is inserted is formed, and the plate members 72 and 72 'are mounted on the base material (not shown) by the mounting screw 76.

The joint 88 is extruded and has a substantially rectangular cross section. Further, irregularities 12 and 14 are formed on the surface of the joint 88 and the inner surface of the recess 74, respectively. in this case,
The ridges on the concave portion 74 side are large, and the ridges on the joint 88 side are small. According to the fourteenth embodiment, a large number of plate members 72, 72 'can be simply and sequentially connected horizontally or vertically in a fixed positional relationship, and the joint 88 and the plate members 72, 72' can be easily connected.
72 'can be easily manufactured by extrusion.

The irregularities 12 and 14 may be formed only in at least one of the concave portion 74 and the joint 88, and in this case, they may be constructed as shown in FIG. 21, FIG. 22 or FIG. Further, it is not necessary to form the unevenness 12 and 14 together. FIG. 27 shows a fifteenth embodiment of the present invention. That is, in this connection structure, the joint 88 is a hollow body 89 having a substantially rectangular cross section, and the side portions are bent outwardly to be convex. In the embodiment, the convex curved surfaces 2c are formed on both side surfaces, and the unevenness 14 is further formed on the surfaces, which are formed by extrusion molding and cut at a cutting position 88a having a predetermined length. The other structure is similar to that of the fourteenth embodiment.

According to this connecting structure, the joint 88 is formed in the recess 7
Since the convex curved surface 2c is elastically deformed when press-fitted in 4, the joint 8
8 can be easily pressed into the recess 74, and the binding force can be increased. Others are the same as the effects of the fourteenth embodiment. It should be noted that the irregularities 12 and 14 may be either one or both.

[0072]

According to the connecting structure of the first aspect, the joint is formed by cutting the extruded hollow body into a length that can be press-fitted into the connecting hollow portion. When press-fitting into the connecting hollow part, it is possible to obtain some elasticity due to the hollow part of the joint, so it is easier to press-fit as compared with a joint without a hollow part, and due to its elasticity, A tight fit can be achieved without rattling, a strong binding force can be obtained, and the work of connecting the members to be connected can be simplified. Further, since the joint is formed by cutting an extruded product, it is easy to manufacture.

According to the connecting structure of the second aspect, in the first aspect, at least one of both side surfaces of the end portion of the joint is formed into a convex curved surface. By press-fitting into the connecting hollow portion, the convex curved surface is elastically deformed and comes into close contact with the inner surface of the connecting hollow portion, so that a strong bonding force is obtained. According to the connection structure of claim 3, since the mountain-shaped unevenness is formed on at least one of the connection hollow portion and the contact portion of the joint in the first structure, the mountain-shaped unevenness is obtained. When it is formed only on one of the connecting hollow portion and the joint, the joint can be easily press-fitted, and a strong joining force can be obtained by pressing the tip of the protrusion against the surface on the opposite side. Further, when the unevenness is formed on the connecting hollow portion and the joint, the strong tips are engaged with each other to obtain a strong bonding force.

According to the connection structure of the fourth aspect, in the first aspect, since the joint is formed of three or more radial bodies, in addition to the effect of the first aspect, three or more connected members are connected. It is possible to connect them radially. According to the connection structure of claim 5, claim 1, claim 2 or claim 3
In, the facing surface of the connected member is inclined so that the connected member is connected at a right angle, the joint is substantially L-shaped, the corner portion thereof has a reinforcing member, and both end surfaces have the facing surface. Since it is inclined so as to be substantially orthogonal to and flush with, the effect of claim 1, claim 2 or claim 3 as well as the jointed member together with the joint can be easily manufactured by extrusion molding. In addition, the strength of the joint can be increased, and the wall thickness of the joint can be reduced. Further, since the surfaces of the hollow body corresponding to both ends of the joint are flush with each other, by supporting this surface on the support surface, the cutting work for cutting the hollow body can be stably performed, and the work is safe and easy. It becomes easy to press both ends of the joint into the connecting hollow part.

According to the connection structure of claim 6, in claim 5, the reinforcing member is formed at a position apart from the facing surface of the member to be connected. Therefore, in addition to the effect of claim 5, When connecting the connected members in a frame shape to form a cloth tension frame such as canvas, for example, since loose cloth is stretched after the cloth is stretched, the distance between the connected members is widened. The reinforcing member does not interfere with the padding interposed in the gap between the members to be connected in order to prevent movement in the direction of narrowing the space.

According to the connecting structure of claim 7, in claim 5 or 6, since the reinforcing member for forming the connecting cylinder portion is provided at the center position of the joint, the connecting structure of claim 5 or claim 6 is provided. In addition to the effect of item 6, another connected member can be connected by connecting another joint to the connecting tubular portion, which is highly versatile. According to the connecting structure of the eighth aspect, the opening can be easily closed by press-fitting the opening with the both side pieces of the cap, and the cap can be easily manufactured.

According to the connecting structure of the ninth aspect, the connected members can be connected easily and reliably by press-fitting both side pieces of the joint into the ends of the pair of connected members adjacent to each other. Manufacture of joints is facilitated. Claim 10
According to the above-described connecting structure, a pair of adjacent members to be connected can be easily connected, the members to be connected can be applied to a floor material and the like, and the joint can be easily manufactured.

According to the eleventh aspect of the connection structure, in the tenth aspect, both side pieces of the joint have hollow portions, and the side portions are bent outwardly and have elasticity, In addition to the effect of the tenth aspect, a strong coupling force can be obtained by elastically deforming the side portion of the joint that is bent outwardly convexly by press-fitting both side pieces. According to the connecting structure of the twelfth aspect, a pair of adjacent members to be connected can be connected easily and surely, the members to be connected can be applied to a floor material and the like, and the joint can be easily manufactured.

According to the connecting structure of the thirteenth aspect, in the eighth, ninth, tenth, eleventh or twelfth aspect, the contact surface of at least one of the joint and the connected member is uneven. Is formed, the claim 8, the claim 9, the claim 10, the claim 11, or the claim 1 is formed.
In addition to the effect of 2, the unevenness is formed only on one side of the contact surface, so that the joint can be easily press-fitted, and the convex tip is pressed against the contact surface to obtain a strong bonding force. When both the contact surfaces have irregularities, the convex tips engage with each other to obtain a strong bonding force.

According to the connecting structure of the fourteenth aspect, in the eighth, the ninth, the tenth, the eleventh or the twelfth aspect, the joint is integrated with the tip of the column portion of the inverted T-shaped section member. Claims 8, 9, and 1
In addition to the effect of 0, claim 11 or claim 12, since the member having an inverted T-shaped cross section can be fixed to the base material, the wall material can be fixed reliably.

According to the connecting structure of the fifteenth aspect, a large number of plate members can be easily connected horizontally or vertically in a fixed positional relationship, and each plate member can be easily manufactured by extrusion molding. . According to the connection structure of claim 16, the plate members can be connected by fitting the protrusions of one wall member into the recesses of another plate member, and the recesses and protrusions have crushable unevenness. Therefore, the binding force is increased.

According to a seventeenth aspect of the present invention, in the sixteenth aspect, the concave portions have mountain-shaped irregularities having a large pitch, and the convex portions are formed with a smaller pitch than the irregularities. In addition to the effect of item 16, it is easy to press the convex portion into the concave portion. According to the connection structure of claim 18,
In Claim 16 or Claim 17, since one of the concave portion and the convex portion has a lower fitting side and becomes higher toward the inner side, the convex portion is press-fitted into the concave portion in addition to the effect of the 16th or 17th aspect. Easy to obtain high binding strength.

According to the connecting structure of the nineteenth aspect, a large number of plate members can be easily connected sequentially in a horizontal or vertical direction with a fixed positional relationship, and the joint can be easily manufactured by extrusion molding. According to the connection structure of claim 20,
In claim 19, since the joint is a hollow body and the side portion is curved outwardly in a convex shape, in addition to the effect of claim 19, when the joint is press-fitted into the concave portion, the curved portion is elastically deformed. The joint can be easily pressed into the recess, and the coupling force can be increased.

[Brief description of drawings]

FIG. 1 is a partially exploded perspective view of a cloth tension frame to which a first embodiment of the present invention is applied.

FIG. 2 is a front view of a fabric tension frame.

FIG. 3 is a cross-sectional view of a frame piece.

FIG. 4 is a side view of the joint.

FIG. 5 is a side view of the joint according to the second embodiment.

FIG. 6 is a partial plan view showing a state in which the frame pieces of the cloth tension frame are slightly opened.

FIG. 7 is an exploded perspective view illustrating attachment of another connected member.

FIG. 8 is a perspective view of a three-dimensional frame.

FIG. 9 is a partially exploded perspective view of a connection structure according to a third embodiment.

FIG. 10 is a partial perspective view showing the one frame piece.

FIG. 11 is a perspective view of a frame formed by combining the frame pieces.

FIG. 12 is a perspective view of the joint of the fourth embodiment before being cut from the hollow body.

FIG. 13 is an exploded perspective view of the fifth embodiment.

FIG. 14 is a perspective view of the joint of the sixth embodiment before being cut from the hollow body.

FIG. 15 is an exploded perspective view of the seventh embodiment before a cap is attached.

FIG. 16 is an exploded perspective view before connecting the members to be connected according to the eighth embodiment.

FIG. 17 is an exploded perspective view before connecting the members to be connected in the ninth embodiment.

FIG. 18 is a perspective view of a joint according to a tenth embodiment.

FIG. 19 is an exploded perspective view before connecting the members to be connected of the eleventh embodiment.

FIG. 20 is a partially cutaway perspective view of the twelfth embodiment.

FIG. 21 is a partially enlarged sectional view of the recess.

FIG. 22 is a partially enlarged cross-sectional view of a convex portion.

FIG. 23 is an explanatory diagram of a meshing state of the unevenness.

FIG. 24 is a partial cross-sectional view of a recess of a modified example.

FIG. 25 is an exploded side view of the thirteenth embodiment before connection.

FIG. 26 is a partially cutaway perspective view of the fourteenth embodiment.

FIG. 27 is a perspective view of the joint of the fifteenth embodiment before separation from the hollow body.

[Explanation of symbols]

1a to 1d Frame pieces that are connected members 2 joints 2a, 2b both ends 3 front 4 Ridges for upholstery 5 back 6 groove 7 Outside 8 Hollow part for connection 9 Fixture 10 legs 12, 14 unevenness 13 Hollow body 16 Reinforcement member 19 head 20 Ridges 23 Ridge for hitting pliers 24 Opposing surface 26 Hollow part 27 slope 28 Projection 30 cloth 51 opening 50 members 52 Sectional π-form 53 both sides 54 cap 95 Folding back and hooking piece

Claims (12)

[Claims] 1. A member having an opening at an end thereof and an elastic member formed by cutting an extrusion-molded substantially π-shaped cross-section into a length capable of being press-fitted into the opening so that both side pieces are bent outwardly to be convex. And a cap having a connecting structure. 2. A pair of members to be connected which have a groove portion on a surface adjacent to the side portion and are adjacent to each other, and each side formed by cutting an extruded substantially U-shaped cross-section into a predetermined length. A connecting structure comprising a joint in which a piece is press-fitted into the groove. 3. A pair of members to be connected, which are adjacent to each other and have a groove portion on the surface adjacent to the side portion, and a substantially U-shaped cross section formed by extrusion.
A joint formed by cutting the shape body to a predetermined length and press-fitting each side piece into the groove portion, both side pieces of the joint have a hollow portion, and the side portion is bent outwardly convexly. Connection structure that has elasticity. 4. A pair of connected members facing each other with grooves on the surface of the side surface, and a flat hollow body extruded and at least one side of which is bent outwardly in the width direction to have a predetermined length. A connecting structure having an elastic joint formed by cutting into two and press-fitting both ends into the groove. 5. The unevenness is formed on a contact surface of at least one of the joint and the connected member,
The connection structure according to claim 2, claim 3, or claim 4. 6. The connection structure according to claim 1, claim 2, claim 3, or claim 4, wherein the joint is integrally provided at a tip of a column portion of the inverted T-shaped section member. 7. A plurality of plate members having a phase cutout surface on at least one of a back surface side of one side portion and a surface side of the other side portion, and connecting them to each other intermittently, and one side of the cutout surface has a front surface and a back surface. A connecting structure in which a convex portion protruding in one direction is formed and a concave portion into which the convex portion fits is formed on the other side. 8. A book having a tenon on one side and a collapsible concavo-convex formed on the side, and a tenon on which the tenon fits and a collapsible concavo-convex formed on the other side. A connecting structure with multiple plate materials that are torn. 9. The connection structure according to claim 8, wherein the concave portions have mountain-shaped irregularities with a large pitch, and the convex portions are formed with a smaller pitch than the irregularities. 10. The connecting structure according to claim 8, wherein one of the concave portion and the convex portion has a lower fitting side and a higher height toward the rear side. 11. A back surface of one side portion and a front surface side of the other side portion are provided with at least one of the phase cutout surfaces, and the phase cutout surfaces are opposed to each other in a state in which the phase cutout surfaces are overlapped with each other. A connection structure comprising: a plurality of plate members having recesses and splicing with each other; and a joint fitted between the recesses of the recessed surfaces of the plurality of plate members. 12. The connection structure according to claim 11, wherein the joint is a hollow body, and the side portion is curved outwardly convex.