JPH09263100A - Connection structure and cloth tensioning frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To certainly bring the contact part of a joint into contact with the end surface of a member to be connected without restricting the end surface shape of the member to be connected by forming a projection of which the top part brings the other side to a pressure contact state to at least either one of the inner surface of the recessed part of the member to be connected and the surface of the protruding part of the joint. SOLUTION: This connection structure has members 1 to be connected and a joint 2. The members 1 to be connected have recessed parts 8 provided to the end surfaces 24 thereof and projections 12 are formed to the inner surfaces of the recessed parts 8. The joint 2 has the contact parts 44 with the end surfaces 24 at the end parts thereof and the protruding parts 2a, 2b fitted in the recessed parts 8 protrude from the contact parts 44 and projections 14, 14a are formed to the surfaces of the protruding parts 2a, 2b. Since the protruding parts 2a, 2b of the joint 2 are fitted in the recessed parts 8 of the members 1 to be connected while pressing the top parts of the projections 14, they are easily fitted in the recessed parts 8 and the contact parts 44 of the joint 2 can certainly come into contact with the end surfaces 24 of the members 1 to be connected and, since the end surfaces of the members 1 to be connected are not mutually brought to a surface contact state, the end surface shapes thereof are not restricted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure applied to building materials and the like and a fabric tension frame applied to canvases of paintings and the like.

[0002]

2. Description of the Related Art There has been a connecting structure in which a joint is concealed by a pair of connected members when the joint is fitted into the recesses of the pair of connected members and the pair of connected members are phase-connected.

[0003]

However, in this connection structure, since the end surfaces of the members to be connected are in surface contact with each other without any gap, the shape of the end surface is limited, for example, by cutting the corner at 45 degrees, and the fitting of the joint is performed. When it is tight, a gap is formed between the end faces of the members to be connected, which is unsightly, and when the fitting is loosened, the connecting portion may wobble.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a connecting structure and a cloth-clad frame in which the shape of the end surface of a member to be connected is not restricted and the connecting portion can be tightly packed.

[0005]

According to a first aspect of the present invention, there is provided a connecting structure, wherein a member to be connected has a concave portion on an end surface thereof, and a convex portion having an abutting portion for abutting the end surface at the end portion and fitted into the concave portion. And a joint projecting from the abutting portion, and a protrusion whose top is pressed against the other is formed on at least one of the inner surface of the concave portion and the surface of the convex portion.

According to the connecting structure of the first aspect, when the convex portion of the joint is fitted into the concave portion of the member to be joined, the top portions of the protrusions are fitted while being pressed against each other. Since the parts can be reliably brought into contact with the end surface of the member to be connected, the parts can be tightly connected, and since the end surfaces of the member to be connected do not make surface contact, the shape of the end surface is not limited. Further, since the intermediate portion of the joint is exposed from the member to be connected, even if a small gap is formed between the contact portion and the end surface of the member to be joined by changing the material of the joint, the gap is made inconspicuous. be able to.

According to a second aspect of the present invention, there is provided the connection structure according to the first aspect, wherein the member to be connected has a pin insertion hole penetrating the recess on a side surface thereof, and the joint has the protrusion at a position aligned with the pin insertion hole. A pin attachment portion, and a pin which is inserted into the pin insertion hole and attached to the pin attachment portion is provided. According to the connection structure of claim 2, claim 1
In addition to the above effect, by attaching the pin to the pin attaching portion through the pin insertion hole, the retaining effect of the joint can be enhanced.

According to a third aspect of the present invention, in the connecting structure according to the first aspect, the convex portions are a pair of convex portions arranged side by side with a space therebetween and are fitted together in the concave portions. According to the connection structure of claim 3, in claim 1, when the pair of convex portions are fitted into the concave portion, elastic deformation is likely to occur in a direction in which they approach each other, so that the fitting into the concave portion is facilitated. It is difficult to move in the pulling direction due to the pressure contact at the top of the protrusion.

A cloth-clad frame according to a fourth aspect of the present invention forms each side of the cloth-clad frame and has a concave portion on an end surface, a ridge for cloth-cladding on a front surface, and an outer surface to a back surface. Has a concave groove in the range of, and has a frame piece having concave and convex for friction locking on the inner side surface of the concave groove, and an abutting portion that abuts against the end surface at the end, and a convex portion that fits into the concave portion. A portion projecting from the abutting portion and having a continuous protruding portion continuous with the upholstery protruding portion on the front surface, and a continuous concave groove continuous with the end of the concave groove from the outer surface to the rear surface. And a projection having a top portion press-contacted to the other on at least one of the inner surface of the concave portion and the surface of the convex portion.

According to the cloth tension frame of claim 4, the same effect as that of claim 1 can be obtained. The cloth tension frame according to claim 5, wherein the frame piece has a pin insertion hole through which the frame piece penetrates the concave portion on a side surface, and the joint has a pin on the convex portion at a position aligned with the pin insertion hole. A pin that has an attachment portion and is attached to the pin attachment portion through the pin insertion hole is provided.

According to the cloth tension frame of claim 5, the same effect as that of claim 2 can be obtained. According to a sixth aspect of the present invention, in the fabric-clad frame according to the fourth aspect, the convex portions are formed of a pair of convex portions arranged in parallel with each other at intervals, and are fitted together in the concave portions. According to the cloth tension frame of claim 6, the same effect as that of claim 3 can be obtained.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION A cloth-covered frame for painting, to which a first embodiment of the present invention is applied, will be described with reference to FIGS. That is, this connecting structure has the member to be connected 1 and the joint 2. The connected member 1 has the recess 8 on the end face 24, the projection 12 is formed on the inner surface of the recess 8, and the pin insertion hole 43 penetrating the recess 8 is provided on the side surface. In the embodiment, the frame piece 1 in which the connected member 1 forms each side of the cloth-clad frame
a to 1d (see FIG. 2), which is extruded using aluminum as a material. The shape is such that the concave portion 8 uses the end of the hollow portion, has the upholstery protrusion 4 on the front surface, has the concave groove 11 on the outer side surface 7, and frictionally locks on the inner side surface of the concave groove 11. It has the unevenness 6 for. The unevenness 6 extends linearly in the longitudinal direction in extrusion molding. Similarly, the protrusion 12 also extends linearly in the longitudinal direction of the frame pieces 1a to 1d, is formed on the inner surface of the concave portion 8 in the front-rear direction of the frame pieces 1a to 1d, and has a mountain-shaped cross section with an apex. A large number of pieces 1a to 1d are formed in the width direction.

The joint 2 has an abutting portion 44 that abuts the end face 24.
Has projections 2a and 2b that fit in the recesses 8 and project from the contact portion 44, and the pin insertion holes 43 of the projections 2a and 2b are provided.
The pin attachment portion 45 is provided at a position aligned with. In some embodiments, about 30 plastic fibers, such as glass fibers,
% Filled thermoplastic resin (nylon 6, nylon 66
Etc.) is injection molded. The shape is L-shaped when viewed from the side, and has a continuous protruding portion 4 ′ that is continuous with the upholstered protruding portion 4 on the front surface, and has a continuous groove 11 that is continuous with the end of the groove 11. ′ In the range from the outer surface to the back surface,
Protrusions 14 and 14a are formed on the surfaces of a and 2b. The projection 6'of the continuous groove 11 'extends in the groove depth direction on one side of the joint 2 and extends in the groove longitudinal direction on the other side.
The protrusion 14 is formed on one side surface of each of the protrusions 2a and 2b and has a mountain shape with an arcuate cross section, and the extending direction of the protrusion 14 is perpendicular to the protrusion direction of the protrusion 12a, that is, the width direction of the protrusion 2a. The convex portion 2b is parallel to the protrusion 14 of the convex portion 2a, that is, parallel to the projecting direction of the convex portion 2b. The protrusion 14a has a mountain-shaped cross section with an angled top, and is formed on the other side face adjacent to the side face on which the protrusion 14 is provided. In each case, one protrusion is formed parallel to the protruding direction of the protrusions 2a and 2b. are doing. The pin attachment portion 45 is formed by a hole.

The pin 40 is attached to the pin attaching portion 45 through the pin insertion hole 43 to prevent the joint 2 from coming off. The pin attaching portion 45 has a screw hole as an embodiment, and the pin 40 uses a screw. As shown in FIG. 2, this fabric-clad frame is a frame material 1
The a to 1d are arranged in a frame shape, the joints 2 are interposed between them, and they are pressed against each other to push the joints 2 into the end portions of the frame members 1a to 1d to fit them. At this time, the tops of the projections 12 and the tops of the projections 14 press-contact the recesses 8 of the frame pieces 1a to 1d and the projections 2a and 2b of the joint 2, but since the joints 2 are made of plastic, the tops of the projections 14 are Collapse. The tops of the protrusions 14a are also pressed into contact with the inner surface of the recess 8 and crushed. Next, the pin 40 is driven into the pin attachment portion 45 through the pin insertion hole 43 to prevent the joint 2 from being pulled out from the frame pieces 1a to 1d. Reference numeral 21 is an intermediate rail for reinforcing the frame, which is connected between the frame members 1a and 1c. Also,
The cloth 30 is placed on the cloth tension frame, and the front side of the cloth 30 is stretched by pulling the edge 30a of the cloth 30 to the back side of the frame members 1a to 1d as shown in FIG. Through the cloth 30 and fit into the groove 11,
0 is fixed. At this time, the cloth tensioning fixture 9 meshes with the unevenness 6 and the cloth tensioning fixture 9 is securely fixed in the groove 11.

According to this embodiment, when the projections 2a and 2b of the joint 2 are fitted into the recesses 8 of the member to be connected 1, the tops of the projections 14 are pressed into contact with each other so that they can be fitted easily.
Since the abutting portion 44 of the joint 2 can surely abut the end surface 24 of the connected member 1, the connection can be made tightly and the end surfaces of the connected member 1 do not come into surface contact with each other, so that the end surface shape is not limited. For example, the end face does not have to be cut at 45 degrees. Further, since the intermediate portion of the joint 2 is exposed from the connected member 1, even if a gap is formed between the contact portion 4 and the end surface 24 of the connected member 1 by changing the material of the joint 2 or the like. The gap can be made inconspicuous.

It should be noted that the joint 2 without hammering the pin 40
The degree of difficulty in removing the protrusion can be determined by the amount of fitting of the protrusions 2 a and 2 b into the recess 8. Further, by attaching the pin 40 to the pin attaching portion 45 through the pin insertion hole 43, the joint 2 can be securely prevented from coming off. The second embodiment of the present invention is shown in FIGS. That is, in this fabric-clad frame, the frame piece 1a shown in FIG. 5 has grooves 11a and 11b formed at two positions on the outer side surface and the back surface thereof, and a line extending in the longitudinal direction is formed on both side surfaces of the groove sections 11a and 11b. A large number of ridges and valleys 6 are formed. Further, the concave portion 8 is formed to have a wide width, for example, approximately three times as thick as that of the first embodiment, and a large number of protrusions 12 having a mountain-shaped cross-section with an apex at a corner and extending in the longitudinal direction are formed on the entire inner circumference. ing. In addition, a folding back and hooking piece 20 is hung behind the rear side recessed groove 11b, and an edge portion of the fabric stretched and fixed to the recessed groove 11a or 11b by a fixture 9 (FIG. 3) is folded back to the folding back and hooking piece 20, It is made to look good by fixing it to the folding and hooking piece with a separate tool such as a clip. Further, by hooking the folding and hooking piece 20 on a wall surface with a hooking tool (not shown), the cloth tension frame can be conveniently hung on the wall surface. Further, a hanging piece 21 for attaching the crosspiece 21 (Fig. 2).
a. The frame pieces 1b to 1d also have the same structure as the frame piece 1a, but the folding piece hooking piece 21 may be formed only on the frame piece 1a, and the hanging piece 21a may be formed only on the frame pieces 1a and 1c. These frame pieces 1a to 1d are formed by extrusion molding.

On the other hand, the joint 2 shown in FIG. 4 and the like is L-shaped, and the continuous groove 1 is continuous with the ends of the grooves 11a and 11b.
1'a, 11'b, and as shown in FIG. 7, a large number of streaky concavities and convexities 6'extending in the depth direction are formed on both sides of the continuous groove 11'a, 11'b. ing. Further, the frame pieces 1a to 1
The convex portions 2a and 2b that fit into the concave portion 8 of d are formed by a pair of convex portions 23 and 24 that are arranged in parallel at intervals.
Striation projections 14 and 14a extending in the width direction are formed on the side surfaces other than the facing surfaces of 3 and 24, respectively. This protrusion 1
The vertical dimension a and the horizontal dimension b of the convex portions 2a and 2b viewed from the front end faces of the pair of convex portions 23 and 24 in consideration of the heights of the convex portions 4 and 14a.
Is slightly a> a ', b>b' compared with the vertical dimension a'and the horizontal dimension b'of the recess 8 shown in FIG.
When the top part of the is crossed with the projection 12, it is crushed and tightly bonded to the projection 12. Since the frame pieces 1a to 1d are made of aluminum and are harder than the synthetic resin joint 2, the projections 14 and 14a may have a gentle pitch with a wider pitch than the projection 12.

Further, a pin attachment portion 45 is formed on the convex portion 23, and a pin 40 having a screw structure which is passed through the pin insertion hole 43 of the frame piece 1a is screwed. The pin attachment portion 45 may be tapped with the pin 40. Further hanging piece 2
1, a continuous hanging piece 21 ′ is formed, a continuous folding and hooking piece 20 ′ is formed continuous to the folding and hooking piece 20, and hooking holes 27 are formed in these. The joint 2 is made of synthetic resin. Reference numeral 28 is a concave portion for stealing the meat on molding.

In addition, the same parts as those of the first embodiment are designated by the same reference numerals. According to this embodiment, when the pair of convex portions 23 and 24 are fitted into the concave portion 8, elastic deformation is likely to occur in the direction of approaching each other, so that fitting into the concave portion 8 is facilitated, while the protrusions 14 and It is difficult to move in the pulling direction due to the pressure contact of the top of 14a. FIG. 8 shows the protrusions 12, 14, 14a.
FIG. 7A shows a modified cross-sectional chevron with the apex 37 having a curved surface, and FIG. 9B shows a chevron-shaped cross-sectional chevron with the apex 37 having an angle. 38 shows an example of a mountain top when the top 37 is crushed. Further, the protrusions 14 and the like are not only formed in the streak, but may be formed in a conical shape, a pyramid shape, or the like and scattered. in this case,
The protrusions 12 and 14 may be arranged so as to form letters, numbers or symbols.

The concave grooves 11, 11'a, 11'b are
It may be formed in the range from the outer surface to the back surface of the connected member 1 and the joint 2. The pin 40 is a screw, and the pin attaching portion 4
Although 5 is a screw hole, the pin 40 is not screwed, and the pin attaching portion 45 is formed in a hole or the like having a protrusion on the inner surface thereof to form the pin 4.
It may be fixed by press-fitting 0. Further, although the projections 12, 14, 14a are formed on both the connected member 1 and the joint 2, they may be formed on only one of them.
The joint 2 may be made of metal. When the protrusions 12, 14, 14a are equal or soft, the tops of these protrusions are crushed, and when the protrusions are harder, the hard protrusions bite into the softer surface or protrusion.

[0021]

According to the connecting structure of the first aspect of the present invention, when the convex portion of the joint is fitted in the concave portion of the member to be joined, the fitting is easy because the top portion of the projection is fitted while being pressed. Since the contact portion can surely contact the end surface of the connected member, the connection can be performed tightly, and the end surfaces of the connected members do not come into surface contact with each other, so that the shape of the end surface is not limited. Further, since the intermediate portion of the joint is exposed from the member to be connected, even if a small gap is formed between the contact portion and the end surface of the member to be joined by changing the material of the joint, the gap is made inconspicuous. be able to.

According to the connecting structure of the second aspect, in addition to the effect of the first aspect, by attaching the pin to the pin attaching portion through the pin insertion hole, the retaining effect of the joint can be enhanced. According to the connection structure of claim 3, in claim 1, when the pair of convex portions are fitted into the concave portion, elastic deformation is likely to occur in a direction in which they approach each other, so that the fitting into the concave portion is facilitated. It is difficult to move in the pulling direction due to the pressure contact at the top of the protrusion.

According to the cloth tension frame of claim 4, the same effect as that of claim 1 can be obtained. The cloth tension frame according to claim 5 has the same effect as that of claim 2. According to the cloth tension frame of claim 6, the same effect as that of claim 3 can be obtained.

[Brief description of drawings]

FIG. 1 is a partially exploded perspective view of a first embodiment of the present invention.

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

FIG. 3 is a cross-sectional view illustrating a state in which the cloth is stretched.

FIG. 4 is a perspective view of a joint according to a second embodiment.

FIG. 5 is a partial perspective view of the frame piece.

FIG. 6 is an end view of the joint.

FIG. 7 is a partial view of a groove.

FIG. 8 is a cross-sectional view showing a modified example of the protrusion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connected member 1a-1d Frame pieces 2a, 2b Convex part 2 Joint 4,4 'Ridge ridge part 6,6' Rubbing for concavo-convex 8 Recessed part 11 Recessed groove 11 'Continuous recessed groove 11a, 11b Recessed Grooves 11'a, 11'b Continuous recessed grooves 12,14 Projections 14a Projections 23,24 A pair of projections 37 Tops 40 pins 43 Pin insertion holes 44 End surfaces 45 Pin attachment parts

Claims (6)

[Claims] 1. A connected member having a concave portion on an end surface thereof, and a joint having a contact portion contacting the end surface at the end portion, and a protrusion protruding from the contact portion, the protrusion protruding into the recess. A connection structure in which a projection is formed on at least one of the inner surface of the concave portion and the surface of the convex portion such that the top portion presses against the other. 2. The connecting member has a pin insertion hole penetrating into the concave portion on its side surface, and the joint has a pin attaching portion on the convex portion at a position aligned with the pin inserting hole, The connection structure according to claim 1, further comprising a pin which is inserted into the insertion hole and attached to the pin attachment portion. 3. The connecting structure according to claim 1, wherein the convex portion is composed of a pair of convex portions arranged side by side with a space therebetween, and is fitted together with the concave portion. 4. A cloth-clad frame is formed on each side thereof and has a concave portion on an end surface thereof and a ridge portion for cloth-cladding on a front surface thereof.
A frame piece having a concave groove in the range from the outer side surface to the rear surface, and a concave and convex portion for friction locking on the inner side surface of the concave groove, and an abutting portion that abuts the end surface at the end portion, and the concave portion is provided in the concave portion. A convex portion to be fitted is projected from the abutting portion, a continuous protruding portion that is continuous with the upholstered protruding portion is provided on the front surface, and a continuous concave groove that is continuous with the end portion of the concave groove is formed on the outer surface. To a back surface, and a cloth-covered frame in which at least one of the inner surface of the concave portion and the surface of the convex portion is formed with a protrusion whose top portion presses against the other. 5. The frame piece has a pin insertion hole penetrating the concave portion on its side surface, and the joint has a pin attachment portion on the convex portion at a position aligned with the pin insertion hole. The cloth tension frame according to claim 4, further comprising a pin which is inserted through the hole and attached to the pin attachment portion. 6. The fabric-clad frame according to claim 4, wherein the convex portion is formed of a pair of convex portions arranged side by side at intervals, and is fitted together with the concave portion.