KR20040044496A - Coupling structure and cloth stretching frame using said coupling structure - Google Patents

Abstract

The member to be connected has a hollow connection portion on the opposite side, and the connection member has a press-fit portion pressed into the hollow connection portion at the opposite end, and a right-angled concave-convex surface having a crest recessed during press-in has at least one of an inner circumferential surface of the hollow connector portion and an outer circumferential surface of the press-fit portion. It is formed on either. The opposite end of the connecting member is press-fitted at the hollow connection of the member to be connected, and the crest of the concave portion of the angular concave-convex surface is recessed by the opposite surface to be in close contact with the related surface and firmly connected. The connecting member can be connected securely.

Description

COUPLING STRUCTURE AND CLOTH STRETCHING FRAME USING SAID COUPLING STRUCTURE}

The present invention is directed to a fabric pulling frame using the connecting structure and the connecting structure used to connect the edges of the fabric pulling frame or the edge of the architrave for tensioning the fabric, such as a painting canvas, or to assemble the material. It is about.

Conventionally, a pair of connecting members having a hollow connecting portion are connected to each other by a connecting member placed therebetween, and the hollow connecting portion is compressed by a press or the like to fix the connecting member, or the member is connected to the connected member and the connecting member. They were connected to each other by tightening the screws with the formed holes. However, there has been a problem in that such a complicated work requires connecting members to be connected by connecting members.

Further, in the connecting structure in which the projection of the connecting member is fitted to the hollow connecting portion of the member to be connected, if the inner dimension of the hollow connecting portion is set to be substantially the same as the external dimension of the projection, the hollow connecting portions fitted to the projection and the projection are fixed by friction with each other. It can be, but it requires a great force to connect the connecting structure as such. In addition, the difference in the dimensions may cause loose fitting and it may fall off or vice versa.

In addition, when the connecting member is inserted into the hollow member to be connected and connected to each other, there is a connecting structure in which the connecting member is covered by a pair of connected members. However, in such connecting structures in which the cross sections of the connected members are made to contact each other without a gap, the shape of the cross sections is limited such that the edges thereof are cut at an angle of 45 degrees, and it is difficult to fit the connected members, Since a gap can be found between the cross sections of, the result is an incomplete appearance. On the other hand, if it is slightly loosened, the stability of the connection is poor.

Accordingly, a first object of the present invention is to provide a connection structure that can be easily connected.

It is a second object of the present invention to provide a connecting structure and a fabric pulling frame which are easy to fit and do not separate well, and which can alleviate errors in dimensions.

It is also a third object of the present invention to provide a connecting structure and a fabric pulling frame.

Finally, the fourth object of the present invention is to provide a connecting structure and a fabric pulling frame which can be fitted tightly to each other, the cross-sectional shape of the member to be connected is not limited.

1 is a partially exploded perspective view showing a fabric pulling frame to which Embodiment 1 of the present invention is applied;

2 is a perspective view of the connecting member.

3 is a front view of the fabric pulling frame.

Fig. 4 is a partial plan view showing a band-shaped hole being drilled from the connecting member.

5 is a partial cross-sectional view showing a state in which the connecting member is connected to the connected member.

6 is a perspective view of a second embodiment;

7 is a cross-sectional view of a frame piece of a fabric pulling frame to which Example 3 is applied.

8 is a cross-sectional view of a frame piece of a fabric pulling frame to which Example 4 is applied.

9 is a sectional view of a frame piece of a fabric pulling frame to which Example 5 is applied.

10 is a cross-sectional view of a frame piece of a fabric pulling frame to which Example 6 is applied.

11 is a partially exploded perspective view of a frame piece of a fabric pulling frame to which Example 7 is applied.

12 is a side view of the connecting member.

Fig. 13 is a sectional view of the frame piece in a state where the fabric is pulled out;

14 is a perspective view showing a connecting member of a eighth embodiment of the present invention;

FIG. 15 is a partially exploded perspective view showing a connecting member and a connected member in Embodiment 9 of the present invention; FIG.

16 is an enlarged view showing a state in which pins are fixed between clamp pieces.

17 is a partial cross-sectional view of the fabric pulling frame to which Example 10 is applied.

18 is an enlarged view of the tenth embodiment shown in FIG. 17;

19 is a perspective view of a connecting member of Embodiment 11 of the present invention;

20 is a partial perspective view of a frame piece of a fabric pulling frame.

21 is a cross-sectional view of the connecting member.

Fig. 22 is a partial view of the inner face of the corner of the recess shown in the front;

Fig. 23 is a sectional view showing deformation of the projection shape.

24 is a main view of a state in which the uneven surface is engaged with each other.

Fig. 25 is a perspective view of the connecting member and the to-be-connected member of the twelfth embodiment in which the connecting member is in a state before being separated from the hollow body;

Fig. 26 is a sectional view of the frame piece of the fabric pulling frame to which Example 13 is applied.

27 is a cross-sectional view of the reinforcing bar.

28 is a side view of the connecting member.

29 is a partially enlarged view showing a member;

30 is a main diagram showing a procedure of attaching a connecting member.

Therefore, according to the present invention, there is provided a pair of connected members having a hollow connecting portion and a connecting member having a press-fitting portion that connects the hollow portion to its opposite end face and is press-fitted into the hollow connecting portion at the opposite end thereof, A connection structure is provided, characterized in that an angled concave-convex surface with a crest is formed on at least one of an inner circumferential surface of the connection member and an outer circumferential surface of the press-fit portion.

With this connecting structure according to the present invention, when the opposite end of the connecting member is fitted to the hollow connecting portion of the to-be-connected member, the crest of the uneven surface of the angular shape is recessed by the opposite surface so that the connecting members are in close contact with each other, It is firmly connected to the member to be connected. Therefore, the pair of connected members are reliably connected to each other by a simple operation.

In another form of the connecting structure according to the present invention, the cross-sectional shape of the hollow connecting portion is rectangular, is formed on the inner circumferential surface so that the concave-convex surface is arranged in the circumferential direction, the connecting member is formed in a V-shaped flat plate protruding direction It has an outer surface in which the uneven surface arrange | positioned in the direction orthogonal to is formed.

With this connecting structure according to the present invention, since the extending direction of the uneven surface crosses each other at an angle of about 45 degrees, the crests of the convex surface are recessed with each other, and the member to be connected and the connecting member are extruded, thereby facilitating manufacture.

In addition, in another form of the connecting structure according to the present invention, the cross-sectional shape of the hollow connecting portion is rectangular, is formed on the inner circumferential surface so that the uneven surface is disposed in the circumferential direction, the uneven surface arranged from the bent portion to the opposite end is formed on the outer peripheral surface The connecting member is formed by the curved plate.

In this connection structure according to the present invention, since the extending direction of the concave-convex surface cross each other, the convex surface of the crest is recessed and fixed to each other, the connection member and the connection member is extruded, can be easily manufactured.

Further, in another form of the connecting structure according to the present invention, the cross-sectional shape of the hollow connecting portion is rectangular, and the uneven surface arranged in the circumferential direction on the inner circumferential surface is formed on one or more of the pair of opposing surfaces of the rectangular cross section The above convex surface is formed on the other one of a pair of opposing surfaces.

With this connection structure according to the invention, it is possible to reduce the number of uneven surfaces while increasing the strength of the connection and to simplify the mold surface of the mold die.

Furthermore, in another form of the connecting structure according to the invention, a plurality of hollow connecting parts are provided.

In addition, the connection strength according to the present invention can be enhanced.

Further, in another form of the connecting structure according to the present invention, the cross-sectional shape of the plurality of hollow connecting portions is rectangular, and at least one of the hollow connecting portions has a transverse direction orthogonal to that of the other hollow connecting portions.

Further, in another form of the connecting structure according to the present invention, it is formed of a plurality of to-be-connected member having a hollow connecting portion on the opposite surface, and an extruded hollow body that is cut to have a dimension that can be pressed into the hollow connecting portion, A connecting member having an end insertable into the hollow connecting portion is provided.

Further, in another form of the connecting structure according to the present invention, one end of the hollow connecting member is pressed into one hollow connecting part of the member to be connected, and the other end of the connecting member is pressed into the hollow connecting part of the other connected member, The plurality of connected members may be connected to each other by the connecting member.

When the connecting member is arranged to be formed into an extruded hollow body that has been cut so as to have a dimension of the connecting member pressed into the hollow connecting portion, the hollow portion of the connecting member has some elasticity. When the end of the connecting member is pressed into the hollow connecting portion, it can be easily pressed compared to the connecting member without the hollow portion. In addition, the connecting member can be fitted closely to the hollow connecting portion with a high connection force without loosening, so that the dimensional error of the hollow connecting portion and the connecting member can be alleviated, so that not only the fitting is easy but also the connected member can be easily Can connect In addition, since the connecting member is formed by cutting the cast material, it can be easily manufactured.

In addition, in another form of the connecting structure according to the present invention, the opposite surface of the connecting member is inclined L-shape to connect the to-be-connected member at a right angle, there is a reinforcing member at the corner, the opposite The cross section is adjacent to the opposing face at a position substantially perpendicular to the reinforcing member.

With such a connecting structure according to the present invention, the connecting member and the connected member can be extruded, and the strength of the connecting member can be improved by the reinforcing member, thereby reducing the wall thickness of the connecting member. Since the surfaces of the hollow bodies corresponding to the opposite end faces of the connecting members are adjacent, the hollow bodies can be stably, safely and easily cut by supporting these surfaces on the supporting surface, and the opposite ends of the connecting members are also hollow connected. It can be easily pressed into the member.

In still another aspect of the connecting structure according to the present invention, an uneven surface is formed on a contact surface of at least one of the connecting member and the connected member.

By this connecting structure according to the present invention in which the uneven surface is formed only on any one of the contact surfaces, the connecting member can be easily press-fitted, and the tip of the convex face is press-fitted with its contact surface to exhibit strong connection force. In addition, the uneven surface is formed on both contact surfaces so that the leading ends of the convex surfaces are engaged with each other to show a strong connection force.

In still another aspect of the connecting member according to the present invention, a plurality of plate members having half-lap surfaces formed on at least one of a rear surface of one side portion and a front surface of the other side portion are formed on each half overlapping surface. When the half overlapping surfaces overlap with each other, a concave portion connected to each other between them, and a connecting member fitted to the concave portion are provided on the concave portion connected by the half overlap joint and the half overlap surface of the plurality of plate members.

By such a connection structure according to the present invention, it is possible to connect a plurality of plates in a vertical or horizontal direction in a predetermined position, and the connection member is easy to manufacture because the extrusion can be molded.

Further, in another form of the connecting structure according to the invention, the connecting member is hollow and one side thereof is convexly curved outward.

By the connection structure according to the present invention, when the connection member is pressed into the recess, the bent portion is elastically deformed to easily press the connection member into the recess, it is possible to strengthen the adhesive force.

In still another embodiment of the connecting structure according to the present invention, the concave portion has an angular concave-convex surface having a large pitch, and the connecting member is formed with a large angular concave-convex portion having a smaller pitch than the concave portion.

With this connection structure according to the invention, the convex surface can be easily pressed into the recess.

Further, in another form of the connecting structure according to the present invention, when the convex surface of the connecting member is fitted to the recessed portion of the connected member, since the crest of the convex surface is pressed into its opposite surface, the crest of the convex surface is If it is stuck on its opposite surface or if the convex surface is formed on only one side, it is recessed, and when the crests of the convex surface are recessed with each other or if the convex surface is formed on both sides, one of the convex surfaces is recessed by the other, thereby closely Can connect

Therefore, the connecting member is easily fitted to the connected member, so that it is hardly separated from each other, and the dimensional error can be alleviated.

Further, in another form of the connecting structure according to the present invention, the connecting member is formed of a material having the same or higher elasticity as the connected member.

Furthermore, in another form of connecting structure according to the invention, the connecting member is made of a softer plastic material than the connected member.

With this connecting structure according to the invention, the connecting member can be easily manufactured.

Further, in another form of the connecting structure according to the present invention, each of the member to be connected is formed with a pin insertion hole communicating with the concave portion on one side, the connection member has a hole formed in one of the opposing surface of the projection and There is a pin fitting barrel portion formed in the hole at a position aligned with the pin insertion hole, and the pin is fitted to the barrel portion through the pin insertion hole. By this connecting structure according to the invention in which the pin is fitted in the barrel portion, the coupling force between the connecting member and the connected member is strengthened and hardly separated from each other.

In addition, the connecting structure according to the present invention and each of the connected members are formed with a pin insertion hole communicating with the concave portion on one side thereof, the connecting member is a hollow portion and a pin insertion hole communicating with the side of the projection. There is a pair of clamp pieces protruding from the inner surface of the hollow portion at positions aligned with the pins, and the pins are fixed between the clamp pieces through the pin insertion holes.

Further, in another form of the connecting structure according to the present invention, a connected member having a recessed portion in the cross section, an adjacent portion adjacent to the end surface of the connected member is formed in the cross section, and the connecting member has a protrusion projecting to fit into the recessed portion. Is installed, and a crested projection which is pressed against its surface is installed on at least one of the inner surface of the recess or the outer surface of the projection.

With such a connecting structure according to the present invention, when the projection of the connection member is fitted to the recess of the member to be connected, the crests of the projection are fitted together while allowing the crests of the projection to be pressed against the inner surface of the recess, so that the adjacent portions of the connection member are connected to each other. Since it can be surely adjacent to the cross section, a close connection can be made. In addition, since the cross sections of the member to be connected do not have surface contact with each other, the shape of the cross section is not limited.

In addition, since the intermediate part of the connecting member is exposed from the member to be connected, if the material of the connecting member is different from the material of the connecting member, even if a gap may occur between the adjacent part and the end surface of the connecting member, it may be ignored by different materials. It is enough.

Further, in another form of the connecting structure according to the present invention, the side of the member to be connected has a pin insertion hole communicating with the recess, and the connection member has a pin formed on the protrusion at a position aligned with the pin insertion hole. An attachment portion is formed, and the pin is inserted into the pin insertion hole and fitted into the pin attachment portion.

With such a connection structure according to the present invention, it is possible to enhance the effect of suppressing the separation of the connection member.

Further, in another form of the connecting structure according to the invention, the protrusions are arranged in space with each other and consist of a pair of protrusions fitted into the recesses.

With the connecting structure according to the present invention, when a pair of protrusions are fitted into the recess, elastic deformation is easily caused in a direction approaching each other, and it is easy to fit into the recess, and is also press-fitted with a crepe of the projection. Almost no separation.

The fabric pulling frame according to the present invention is composed of a frame piece defining one side of the fabric pulling frame, each of the hollow connection portion formed therein, the fabric fixing bead portion formed on the front, extending to the rear between the outer surface and the inside of the groove A groove member for fixing the uneven surface formed on the surface by friction and a connecting member formed by extrusion molding, and a hollow member having a cross-sectional shape having an L-shaped cross section having dimensions such that the opposite end of the connecting member can be fitted to the hollow connecting portion. .

With such a fabric pulling frame, it is easy to connect between the frame pieces, and the fabric can be held and fixed to the rear by fitting the fixing device into the groove.

In another form of the fabric pull frame, a folding-back and loop piece for folding the edge of the fabric back and hanging on the loop extends to the rear of one or more frame pieces defining the upper side of the frame at a height below the groove. have.

By the fabric pulling frame according to the invention, the edges of the fabric, which are fixedly extended in the grooves by the fixing device, are folded by folding and loop pieces, which are fixed in the same manner as other members by retainers such as clips to reinforce the shape. In addition, the fabric pulling frame can be easily hung on the wall by folding and hooking the hooks on the wall.

In another form of the fabric pulling frame according to the present invention, a protrusion is formed on the rear surface of the frame piece, forming a continuous inclined surface with respect to the outer surface of the frame piece, and the groove is formed on this slide surface, so that the canvas pulling pliers A bead portion which interacts with is formed in a groove on the side away from the outer surface.

By the fabric pulling frame according to the present invention, grooves are formed on the inclined surface so that the fixing device is almost invisible, thereby enhancing the shape. In addition, by securing the protrusion of the pliers to the pliers interacting bead, the fabric can be easily and completely stretched on the inclined surface under the lever action, and the bead supporting the support protrusion of the pliers is protruded linearly to facilitate positioning thereof. As a result, not only the fabric pulling operation is easy, but also the fabric can be fixed in the groove while the fabric is pulled.

Further, in another form of the fabric pulling frame according to the present invention, the bead portion has a suspender attachment hole.

With this fabric pulling frame according to the present invention, by attaching the suspender to the suspender attachment hole, the fabric pulling frame can be easily suspended on a wall or the like.

Further, in another form of the fabric pulling frame according to the present invention, the fabric loop bead portion is formed on the inclined surface on the outer surface side of the groove.

In the fabric pulling frame according to the present invention, the fabric is hardly loosened because the fabric can be held by using the head of the fixing device near the bead portion and the fabric can be caught on the bead portion. It is almost invisible from the front side of the piece.

Further, in another form of the fabric pulling frame according to the present invention, the frame piece is provided with a bar receiver protruding in the inner direction of the fabric pulling frame, the connection hole formed in the bar receiver, the inner surface of the frame piece of the fabric pulling frame A reinforcing bar fixing groove formed in the reinforcing bar having a reinforcing bar having an end portion formed at a side thereof with a screw hole aligned with the connecting hole installed, and a side groove aligned with the reinforcing bar fixing groove formed on the opposite side, Connection member press-fitted into the reinforcing bar fixing groove is installed.

With this fabric pulling frame according to the invention, the reinforcing bar can be attached easily and securely.

Further, in another form of the fabric pulling frame according to the present invention, the concave portion of the cross section, the fabric pulling bead portion formed on the front surface, the groove extending from the outer surface to the rear surface, and the uneven surface fixed by the friction formed on the inner surface of the groove A piece of frame defining each side of a pulled fabric frame, and

A connection member is provided, which is continuous to an end of the groove and has protrusions formed on at least one of a continuous groove extending from an outer surface to a rear surface, an inner surface of the groove, or an outer surface of the protrusion, and having crests pressed against each other.

With reference to Figures 1 to 5 will be described a fabric pulling frame to which Embodiment 1 of the present invention is applied. That is, such a connecting structure has a plurality of frame pieces 1a to 1d and a connecting member 2 as a member to be connected.

The plurality of frame pieces 1a to 1d are made of aluminum and are extruded. Referring to Fig. 3, the frame has a frame piece 1a acting as an upper frame, a frame piece 1c acting as a lower frame, and a frame piece acting as a side frame having an opposite cross section which is an inclined surface at an angle of about 45 degrees ( 1b, 1d).

The frame pieces 1a to 1d to be extruded have the following structure. That is, as shown in Fig. 1, each of the frame pieces 1a to 1d is formed on the front side of the front side of the concave portion 7 and the groove 7 rather than the recess 7 formed in the outer surface defining the outer circumferential surface of the frame. The pulling bead part 5 and one end of the connecting member 2 are fitted, and have a hollow connecting part 4 formed at each end. The inner wall surface of the groove 7 is formed by the uneven surface 8 which fixes the leg portion of the fixing device 3 by friction, and the inner circumferential surface of the hollow connecting portion 4 is formed by the uneven surface 15.

The connecting member 2 has a press-fitting part 4 press-fitted into the hollow connecting part 11 at each end. The press-fit part 11 is formed on the outer circumferential surface having the angular uneven surface 22. As shown in Fig. 4, in this embodiment, the band plate 21 is prepared. For example, a band plate 22 having a width of 60 mm is formed in the center portion on the opposing surface having an angled concave-convex surface 22 having a width of about 30 mm. The height of the crest of the uneven surface 22 is about 0.5 mm. The plurality of connecting members 2 are continuously cut in a V-shape from the band plate 21 in the longitudinal direction, and thus have a V-shape in plan view and are arranged in a direction perpendicular to the direction of protrusion of the bent portion. The member 2 is formed. In this case, as shown in Fig. 4, each connecting member 2 is tapered and the width of the opposite end portion is smaller than the V-shaped bent portion so that it can be easily inserted into the hollow connecting portion 4. The thickness of the plate 21 is slightly thicker at the center having a flat front and rear surface, and may be vertically cut in V-shape to form the connecting member 2 having no uneven surface as shown in FIG. 4.

Referring to Fig. 5 showing a state in which adjacent frame pieces 1a, 1d are connected with the connecting member 2, the uneven surfaces 15, 22 are engaged with each other for connection, and are longitudinally perpendicular to each other at an angle of about 45 degrees. To cross. In this case, the convex portions of the uneven surfaces 15 and 22 are recessed by each other to provide a connected state. Therefore, the frame pieces 1a and 1d are securely and firmly connected without using screws or the like. Further, in order to assemble the fabric pulling frame 1, four connecting members 2 are interposed between the frame pieces 1a to 1d, and knocked to be assembled to the frame pieces 1a to 1d at the same time.

Referring to FIG. 1, the fastener 3 is adjusted to secure a fabric 18, such as a canvas, which is pulled from the front of the fabric pull frame. In this embodiment the fixing device 3 is adjusted to penetrate the fabric 18 and the head 20 compresses the fabric 18 against the leg 19 and the outer surface 16 that are lodged in the groove 7. Has The fabric 18 is installed on the front side 13 of the fabric pulling frame 1, which is composed of frame pieces 1a to 1d connected to each other by four connecting members 2, the peripheral edge of the fabric 18 being fabric While being supported by the pulling bead portion 5, it is wound on the outer surface 6 of the frame pieces 1a to 1d. Next, the peripheral edge portion is pulled toward the rear side of the frame by a pliers or the like, and the leg portion 19 of the fixing device 3 passes through the fabric 18 and gets lodged in the groove 7 so that the fabric 18 It is compressed against the outer surface 16 of the frame pieces 1a to 1d of the head 20. That is, the fabric 18 is pulled taut with the center side of the fabric 18 being dragged toward the peripheral edge. In addition, since the uneven surface 8 is formed on the inner surface of the groove 7, the fixing device 3 is press-fitted and easily fixed to the leg 19 of the fixing device 3 by friction. The material of the fixing device 3 is preferably softer than the fabric pulling frame 1. However, the convex portion of the uneven surface 15 may be recessed and fixed by being made of a hard material such as steel stronger than the frame pieces 1a to 1d.

This will be described with reference to FIG. 3, which shows a reinforcement bar 21.

In this embodiment, when both ends of the connecting member 2 are fitted to the hollow connecting portions 2 of the frame pieces 1a to 1d, the crest of the convex portion of the angular uneven surface 15 is recessed by the associated opposing surface. The connecting member 2 is connected to the frame pieces 1a to 1d so as to be in close contact with each other. Therefore, the frame pieces 1a to 1d can be firmly and firmly connected to each other in a simple operation.

In addition, the hollow connection portion 4 has a rectangular cross section and has a concave-convex surface 15 arranged in the circumferential direction of the inner circumferential surface, and the connecting member 2 is a flat V-shaped flat plate and is perpendicular to the protruding direction of the bent portion. It has an outer surface formed with the uneven surface 22 arranged in the. Therefore, the extending direction of the uneven surface 15 crosses each other at an angle of about 45 degrees, and the crests of the convex portions are fixed to each other and are recessed by each other, and the frame pieces 1a to 1d as the connecting member and the connecting member are extruded. It can be manufactured easily.

Angular uneven surfaces 15 and 22 may be formed on one or more of the member to be connected and the member 2.

Figure 6 shows an embodiment 2 of the present invention, that is, the connection structure is applied when a pair of flat to-be-connected members are connected in the thickness direction. The structure of the member to be connected has a cross sectional shape substantially the same as that shown in Fig. 1, and the connecting member 2 is bent in a V shape in the thickness direction. That is, it has a curved V-shape, and the uneven surface on the outer circumferential surface is arranged in the direction from the bend to the end of the connecting member 2 ', and extends parallel to each other in the width direction. The corner portion on the protruding surface side of the curved portion is formed to be lower than the convex portion of the uneven surface 22.

The connecting member to which the connecting member 2 is applied is a panel or the like, and the joining surface is inclined at an angle of about 45 degrees in the thickness direction to form a hollow connecting portion through which the connecting member can be fitted on the joining surface of the member to be connected. In addition, an uneven surface similar to Example 1 is formed on the inner surface of the hollow connection portion.

The connecting member 2 in this embodiment may be extruded. However, if the uneven surface 22 is inclined horizontally of the connecting member 2, it can be produced by casting. In addition, similar to the first embodiment, the uneven surfaces 15 and 22 may be formed on at least one of the member to be connected or the member 2.

7 shows a fabric pulling frame to which Embodiment 3 of the present invention is applied. That is, in this connection structure, compared with Example 1, the hollow connection part 4 of the to-be-connected members 1a-1d has an angular shape in cross section, especially a substantially rectangular cross section, and is arranged in the circumferential direction of the inner circumferential surface. The uneven surface 15 is formed on one of the angular facing surfaces, and the groove is formed at the center of the other opposite side while the corner portion 25 'that sets the width of the square is left on the opposite side of the groove. In addition, the projections 30 are formed on each other opposite side surface. Further, in order to increase the height of the fabric pulling bead portion 5 of the frame pieces 1a to 1d, the inclined surface is formed completely on the front surface, and when the frame pieces 1a to 1d are assembled to pull the fabric tightly, The fabric is supported only on the fabric pull bead portion 5.

In the present embodiment, the frame pieces 1a to 1d are formed by extruding aluminum. Reference numeral 31 denotes a recess having an opening in the front surface. The remainder of this embodiment is similar to Embodiment 1, with the same reference numerals attached to common members.

According to the present embodiment, the hollow connection portion 4 has an angular cross section, and the uneven surface 15 disposed in the circumferential direction of the inner circumferential surface is formed on an opposite surface of which at least one cross section is an angular shape, and at least one protrusion 30 ) Is formed on each other opposing surface. That is, it is possible to reduce the number of uneven surfaces while ensuring the connection strength, thereby simplifying the molding surface of the forming die.

In addition, a plurality of protrusions 30 may be formed.

8 shows a fabric pulling frame to which Embodiment 4 of the present invention is applied. That is, the frame pieces 1a to 1d of this fabric pulling frame have a plurality of hollow connecting portions 4 and 4a of the third embodiment. In this embodiment, the pair of hollow connecting portions 4, 4a are arranged to overlap each other in the longitudinal direction of the rectangular cross-sectional shape, and a convex surface 15a similar to the uneven surface 15 is also formed in the hollow connecting portion 4a. Reference numeral 32 denotes a recess formed in the front side portion, and spans between the hollow connection portions 4 and 4a aligned with the recess portion 31. The rest of this embodiment is similar to the third embodiment.

Embodiment 5 of the present invention is shown in FIG. That is, the frame pieces 1a to 1d of the present fabric pulling frame have a plurality of hollow connecting members 4 and 4a moved in the short side direction and the long side direction of the rectangular cross-sectional shape of the fourth embodiment. Thus, the width of the frame is smaller than in Example 4, but the thickness is slightly increased. The reason why the frame is small is that the hollow connection portion 4 is formed at a position corresponding to the recess portion 31 in the fourth embodiment. Reference numeral 33 denotes a recess in which a fixing device (not shown) is driven when the fabric pulling frame is placed on a supporting layer (not shown), and an uneven surface having a smaller pitch than the uneven surface 8 is formed on the inner surface. 34 and 35 show the protruding pieces to which one end of the reinforcing bar is fitted when the reinforcing bar (see 21 in FIG. 3) is interposed between the frame pieces 1a to 1d.

Further, with the frame pieces 1a to 1d, the fabric pulling frame becomes larger than that of the fourth embodiment, that is, the space between the pair of hollow connecting portions 4 and 4a becomes larger than that of the fourth embodiment, and the hollow portion 39 is formed between them. The rest is similar to Example 4.

The fabric pull frame of Example 6 of the present invention is shown in FIG. That is, in the fabric pulling frame, a pair of hollow connection portions 4, 4a disclosed in Example 5 and the like are formed on the frame pieces 1a to 1d perpendicular to each other, and have a rod shape such as a circular rod made of rubber formed of urethane or the like. The elastic member 52 is pressed into the groove 7 so that the fabric is pushed into the groove 7 to pull the fabric 18.

In this case, in the sixth embodiment, fine uneven portions may be formed around the elastic member 52. In addition, the uneven surface may be formed in the circumferential direction, or may be formed around the axis around. Instead of fixing the fabric in the groove 7, the elastic member 52 is pushed so that the edge of the fabric 8 is placed on the recess 34 where the fabric 8 is pulled and fixed. In addition, a fine angled concave-convex surface is formed on the outer surface of the frame pieces 1a to 1d to prevent the fabric from slipping.

A fabric pulling frame to which Embodiment 7 of the present invention is applied with reference to FIGS. 11 to 13 will be described below. In other words, the connecting structure includes a plurality of frame pieces 1a to 1d and a connecting member 2 of the fabric pulling frame as the connecting member.

The frame pieces 1a to 1d each have a hollow connection 8 at the opposing face 6, that is, as shown in FIG. 3, the frame pieces 1a and 1c made of aluminum define the upper and lower frames, respectively. The frame pieces 1b and 1d define the side frames, and the opposing surfaces 24 at the opposite ends of the respective frame pieces are formed to be inclined at an angle of about 45 degrees, so that each adjacent frame pieces 1a to 1d are formed. Are connected to each other at a right angle.

The frame pieces 1a to 1d are extruded to have the following structure. That is, each is formed on the inner surface of the fabric pulling bead portion 5, the groove 7 extending from the outer surface 6 to the rear surface 40, the groove 7 in the outer position in the outer position, It has the recessed concave-convex surface 8 fixedly frictionally attached to the leg of (3). In addition, the rear surface 40 has a protrusion 42 which protrudes in a V-shaped cross-section to form a continuous inclined surface 41 on the outer surface of each of the frame pieces 1a to 1d. That is, the inclined surface 41 is inclined at an angle of about 45 degrees with respect to the outer surface 6, and the groove 7 is formed. The bead portion interacting with the canvas pulling piler 44 is formed on the back side 40 on the side away from the outer side 6, ie on the inner side 4 side, and a suspender attachment hole (not shown) is formed. do. In addition, a fabric catching bead portion 46 is formed on the inclined surface 41 of the groove 7 on the outer surface 6 side. The horizontal size of the hollow connection portion 4 having an angular cross section is set equal to a value obtained by subtracting the wall thickness from the total width of the frame piece 1a at a position on the outer surface 6 side of the groove 7. do. In addition, an angularly shaped concave-convex surface 15 arranged in the circumferential direction and having a recessed crest is formed on two surfaces facing the outer surface 6 and the inner surface 43, and the inner peripheral surface of the hollow connecting portion 4. It is limited in phase. Reference numeral 47 is a channel.

The connecting member 2 is formed from an extruded hollow body in which the connecting member 2 is cut into a volume capable of being pressed into the hollow connecting part, and the opposite end of the connecting member 2 in the cutting direction is referred to as the hollow connecting part 4. It is insertable. In the present embodiment, the connecting member 2 is made of a metal such as aluminum, and has an L shape having a width through which the connecting member 2 can be pressed into the entire width of the hollow connecting portion 4, and from the bend to the end. The uneven surface 22 arranged on the outer surface of the connecting member in the direction has a recessed crest. The connecting member 2 is simply formed by cutting the extruded hollow body 18 having an L-shaped cross section, and may have a predetermined length. In addition, in this embodiment, the reinforcing member 50 is installed in the bent portion of the hollow portion 49 of the connecting member 2, and the opposite ends 2a, 2b act as cross sections of the respective frame pieces 1a to 1d. Extend in a direction substantially perpendicular to the opposing surface 55, and are adjacent to each other.

When the fabric pulling frame is assembled, four connecting members 2 are interposed between the frame pieces 1a to 1d, and the frame pieces 1a to 1d are knocked to be assembled at the same time. At this time, due to the installation of the uneven surfaces 15 and 22, the contact area becomes small, so that the connecting member can be easily press-fitted into the hollow connecting portion 4, and also after the connecting member is pressed into the hollow connecting portion 4, , The crest of the uneven surface (15, 22) is recessed to increase the connection force.

The fixing device 3 is adjusted to be pressed into the groove 7 to fix the fabric 18 such as the canvas pulled over the front surface of the fabric pulling frame, and the groove passing through the fabric 18 installed in the frame piece 1a or the like. (7) and has a leg (18) press-fitted into the groove (7) and a head (20) for pressing the fabric on the outer surface of the frame pieces (1a to 1d). Before the fastening device 3 is press-fitted into the groove 7, the fabric 8 as shown in FIG. 15 is first assembled by connecting the frame pieces 1a to 1d using the connecting member 2. It is installed on the front side 13 of the frame, and then the peripheral edge of the fabric 8 is supported at the fabric pulling bead portion 5, and the projecting support 56 of the canvas pulling piler 44 is the bead portion 45. ), The fabric 18 is rotated onto the outer surface of the frame pieces 1a to 1d while being brought into contact, and the grip 18a is moved in the direction of the arrow to be picked up between the fabric tongs 44b using a lever action. Pulled along the inclined surface 41. In this state, the leg portion 19 of the fixing device 3 is driven into the groove 7 and passes through the fabric 18 so that the fabric 18 is framed by the head portion 1a to 1. Compressed against the rear face 40 of 1d). Thus, the central side of the fabric 18 is pulled toward the peripheral edge, so that the fabric 18 is pulled tightly and supported on the fabric pulling bead 5. In addition, since the uneven surface 8 is formed on the inner surface of the groove 7, the leg 9 of the fixing device 3 is easily frictionally fixed by only pressing the fixing device 3. The material of the fixing device 3 is preferably softer than the fabric pulling frame 1. However, if it is made of a material stronger than the frame pieces 1a to 1d such as steel, for example, the crest of the uneven surface 8 is stuck while it is recessed.

Referring to FIG. 13, reference numeral 57 denotes a suspender connected to a suspender attachment hole formed in the bead portion 45, and thus, the fabric pulling frame can be suspended on the wall by the suspender through the medium of the rope penetrated by the suspender. . 58 shows a bar receiver to which one end of the reinforcing bar (21 in FIG. 3) is attached.

In this embodiment, one end portion 2a of the connecting member 2 in the cutting direction of the hollow body 48 is press-fitted into the hollow connecting portion 4 of the frame piece 1a as a member to be connected, and the connecting member 2 The other end 2b of) is pressed into the hollow connecting portion 4 of the frame piece 1b, whereby the frame pieces 1a and 1b are connected by the connecting member 2.

In this case, the connecting member 2 is formed by cutting the extruded hollow body 48, so that the connecting member 2 has a dimension that can be pressed into the hollow connecting portion 4, so that the connecting member 2 When the end portion 2a of the is pressed into the hollow connecting portion 4, some elasticity can be obtained from the hollow portion 48 of the connecting member 2, thus hollowing the connecting member 2 without loosening it. It is possible to closely fit into the connecting portion 4, it is possible to obtain a strong bonding force. In addition, the angled concave-convex surfaces 15 and 22 can be recessed and engaged with each other to obtain a strong connection force. Therefore, the frame pieces 1a to 1d can be easily connected. In addition, the hollow connecting portion 4 has an angular cross section, and the uneven surface 15 is arranged in the circumferential direction of the inner surface, and the connecting member 2 has an L-shaped cross section, and in the direction from the bend to the cross section. It has an uneven surface 22 arranged on the outer surface. Thus, in addition to the connecting member 2, the frame piece 1a or the like can be easily manufactured by extrusion molding.

In addition, since the connecting member 2 includes the reinforcing member 50 in the hollow portion 49, the strength of the connecting member can be increased, and therefore, the wall thickness of the connecting member 2 can be reduced.

Further, the frame pieces are connected to each other at right angles because the connected members are frame pieces 1a to 1d defining respective sides with respect to the fabric pulling frame having the opposite end 55 inclined at an angle of about 45 degrees. Since the opposite ends 2a and 2a of (2) are inclined to be adjacent to each other in a direction substantially perpendicular to the opposite surface 55, the hollow body 48 corresponding to the opposite ends 2a and 2b of the connecting member 2. ) Surfaces are adjacent to each other, so that the cutting of the hollow body 48 is stable, safe, and can be done easily. In addition, the opposite ends 2a, 2b of the connecting member 2 are easily pressed into the hollow connecting portion 4.

In addition, the leg portion 19 of the fixing device 3 is prevented from being frictionally fixed to the concave-convex surface 8 from the groove 6 and falling off, and the fabric is held and fixed to the rear side by the head 20. .

Further, the projections 42 are formed on the rear surfaces of the respective frame pieces 1a to 1d to obtain the inclined surfaces 41 continuous to the surfaces of the frame pieces 1a to 1d, and the grooves 7 are the inclined surfaces 4a. And a bead portion 40 which interacts with the canvas pulling piler is formed on the rear face 40 on the side away from the outer face, and the fixing device 3 forms a groove 7 in the inclined face 41. It is almost invisible from the front side, and therefore the shape can be improved. In addition, when the protruding support 56 of the piler 44 is supported by the piler interaction bead portion 45, the fabric 18 can be easily and completely fixed on the inclined surface 41 by levering, The bead part 45 on which the protruding support part 56 of the piler 44 is supported protrudes linearly. Thus, the position is easily found and the fabric can be easily pulled out, and the fixing device 3 can also be easily fixed to the groove 7 in the state in which the fabric 18 is pulled out.

Further, since the suspender hole is formed in the bead portion 45, the fabric pulling frame can be easily suspended on the wall surface through the suspender 57 attached to the suspender hole.

In addition, a fabric catching bead portion 46 is formed in the inclined surface 41 of the groove 7 on the outer surface 6 side, and the fabric 18 is fastened to the fixing device 3 near the fabric catching bead portion 46. Can be caught on the fabric catching bead portion 46 by retaining the fabric 18 using the head portion 20). Thus, the fabric is hardly loosened and the head is provided by the installation of the bead portion 46. The portion 20 is almost invisible from the front side portions of the frame pieces 1a to 1d.

Further, the connecting member 2 has a width that can be press-fitted in the entire width of the hollow connecting portion 4 formed in the range obtained by subtracting the wall thickness from the entire width of the frame pieces 1a to 1d. ) Is formed, so that the looseness of the frame pieces 1a to 1d can be easily suppressed.

According to the present invention, the angular uneven surfaces 15 and 22 can be formed at least on the frame pieces 1a to 1d or the connecting member 2. In addition, the uneven surface 15 may be formed in whole or in part on the inner circumferential surface of the frame pieces 1a to 1d, and the uneven surface 22 may be formed in whole or in part on the outer surface of the connecting member 2. Can be.

In addition, in any of the above embodiments, the connecting structure is used at each corner of the frame. However, if the frame pieces are connected to each other in a straight line manner, a straight line connection can be used. It can also be used as a mounting material for frames such as windows or doors.

A painting fabric pulling frame to which Embodiment 8 of the present invention is applied with reference to FIG. 14 will be described. This embodiment has a concave portion or a hollow connecting portion at the end face of the member 1 to be connected as a frame piece, and a pin insertion hole 60 communicating with the hollow connecting portion 4 is formed on the side surface. similar.

Unlike the seventh embodiment, the connecting member 27 has a recess 61 having a bottom without a hollow 49, and the recess 61 has a barrel 62. That is, the connecting portion 2 is made of a softer material than the member to be connected 1 and has opposing ends 2a and 2b serving as protrusions fitted to the hollow connecting portion 4. An uneven surface 33 as a kind of protrusion having a crest in elastic contact with the associated opposite surface is formed on the opposite surface of the opposite ends 2a and 2b, and the holes 61 are pinned barrel portions 62 are fins. It is formed on the other opposite surface of the end parts 2a and 2b provided in the position aligned with the insertion hole 60. In this embodiment, the connecting member 2 is extruded from a plastic material such as thermoplastic resin (nylon 6, nylon 66, etc.) in which about 30% of glass fibers are mixed, so that the frame pieces 1a and 1b are formed at the edges of the frame. ) Is L-shaped to connect. In addition, both ends (2a, 2b) are formed to be inclined to be tapered, the uneven surface 22 has a convex bow-shaped cross-section, that is, a direction perpendicular to the pulling direction of the uneven surface 15, which is a kind of projection, that is, connected It extends in the transverse direction of the member and is arranged towards the ends of the ends 2a, 2b. In addition, the barrel portion 62 is an elliptical shape extending longitudinally toward the ends of each of the end portions 2a and 2b, and the plurality of beads 64 which prevents the axial movement of the pin 63 from the barrel portion 62 It is formed on the inner surface.

The pin 63 is fitted to the barrel portion 62 through the pin insertion hole 60. At this time, the pin 63 is fixed between the beads 64 to prevent the movement of the member to be connected, to mitigate the dimensional error and non-uniformity according to the degree of fitting the ends (2a, 2b) into the hollow connection portion (4) .

In such a fabric pulling frame, the connected member 1 is arranged in a frame manner, and the connecting member 2 is interposed therebetween. It is pressed against each other so that the connecting member 2 is pushed into the connected member 1 and pressed in, and finally, the pin 63 is fitted to assemble the fabric pulling frame.

In this embodiment, when the opposing end portions 2a, 2b of the connecting member 2 serving as protrusions are fitted into the recessed portion of the connected member 1, that is, the hollow connecting portion 8, the uneven surface forming the projections The crest of (12, 14) is in elastic contact with the associated opposing face. In this configuration, since the connecting member 2 is made of a softer material than the connected member 1, the uneven surface 15 recesses the crest of the uneven surface 22 to cause intimate contact connection. Therefore, the connecting member can be easily fitted to the connected member 1, and hardly falls off. In addition, dimensional errors can be alleviated. In addition, the degree of the obstacle in falling can determine the degree to which the opposing ends 2a, 2b are fitted in the hollow connection part 4. In addition, since the pin 63 is fitted to the barrel portion 62, the connecting member 2 is hardly separated from the to-be-connected member 1. With this configuration, beads are formed in the elliptical barrel portion 62, pins 63 are fixed between the beads, dimensional nonuniformity can be alleviated, and also the nonuniformity according to the fitting degree of the connecting member 2 is also alleviated. Can be.

In addition, the connecting member 2 is made of a softer plastic material than the connected member 1, so that the connecting member 2 can be easily manufactured.

The uneven surfaces 15 and 22 may be formed of one protrusion or bead.

Embodiment 9 of the present invention is described with reference to FIGS. 15 and 16. In this configuration, the connecting structure is applied to a frame such as a window frame, wherein the connected member 1 and the connecting member 2 are made of aluminum, so as to have the same strength, and the connected member 1 is formed of a rectangular pipe. do. The hollow end of the member to be connected 1 is formed with a concave portion 8, and several uneven surfaces 15 as a kind of projection having a angular cross section having an angular crest in the opposite direction by most of the lateral direction. It is formed on the inner surface of the recess 8, the bead extends in the longitudinal direction of the member to be connected 1, and the pin insertion hole 60 communicating with the hollow connecting portion 4 which is the recess is a hollow connecting portion in the other opposite direction. It is formed in one side of (4). In addition, the cross section of the to-be-connected member 1 is inclined at an angle of about 45 degrees, so that the four to-be-connected members 1 are connected to each other to form a rectangular frame. The member 1 to be connected is extruded vertically.

The connecting member 2 is made of a plastic material, has an L shape, and has a hollow portion 49 in communication with the sides of the opposite ends 2a, 2b serving as protrusions. Further, a plurality of pairs of clamp pieces 67a and 67b for fixing the pins protrude from the inner surface of each hollow portion at positions aligned with the pin insertion holes 60 in directions perpendicular to each other. In addition, the majority of the concave-convex surface 22 serving as an angular projection having an angular crest is formed in the longitudinal direction on the outer surface of the connecting member 2 of the opposite ends 2a and 2b and extends horizontally. It faces the uneven surface 15 which is phosphorus. The uneven surface 22 'similar in shape to the uneven surface 22 is formed on the opposing surfaces of the clamp pieces 67a and 67b. The L-shaped hollow parallelepiped connecting member 2 may be cut and have a predetermined width after extrusion as shown by a virtual line in FIG. 15. Aluminum nails or rivets are used as the pins 63 passing through the gaps between the clamp pieces 67a and 67b through the pin insertion holes using a hammer, and are connected to the member 1 to be connected. To be fixed.

In the present embodiment, when the opposite ends 2a and 2b are fitted to the hollow connecting portion 4, the concave and convex surfaces 15 and 22 are formed because the connecting member 2 and the connected member 1 have the same strength. ) Are recessed by each other and are in intimate contact. In addition, the pair of clamp pieces 67b in which the pin 63 extends in the direction perpendicular to the extending direction of the uneven surface 22 and between the pair of clamp pieces 67a extending in the extending direction of the opposite ends 2a and 2b. ) Is fixed in between. The pin 63 fixed between the clamp pieces 67a is completely suppressed from falling off. However, the pin 63 fixed between the clamp pieces 67b is effectively suppressed except that it can be pulled out due to the frictional fixation. That is, the same or better effect as in Example 8 can be obtained.

In particular, in the case of the clamp piece 67b, if the inner diameter of the pin insertion hole 60 is 6 mm, for example, and the outer diameter of the pin 63 is 4 mm, the length of the to-be-connected member 1 will be long. The uneven surface 15 extending in the direction is displaced by about 2 mm, so that a gap may occur at the corner portion of the connected member 1 assembled in the rectangular frame shape. In this case, after the four corners of the member 1 to be connected are connected to each other, the pins 63 are stuck in the pin insertion holes so that each pin 63 is in the corner side or the inner side of the clamp piece 67 in a solid line in FIG. 6. And the displacement can be adjusted by 2 mm. That is, the diameter of the pin insertion hole 63 is increased so that the pin 63 can be easily inserted.

In addition, if the uneven surface 22 'is formed on the opposing surfaces of the clamp pieces 67a and 67b, it is possible to reliably prevent the clamp pieces 67a and 67b from moving vertically when the pin 63 is fixed. . Further, since the pin 63 is an aluminum nail or rivet having the same or smaller strength as the connecting member 2, it can be fixed by recessing the uneven surface 22 '. Once pin 63 is pulled out, another new pin can be used to reuse the connecting structure.

The uneven surface may be formed of one protrusion or bead.

The fabric pull frame of Example 10 of the present invention is shown in FIGS. 17 and 18. That is, in the seventh embodiment of the fabric pulling frame, another groove 7a added to the groove 6 is additionally formed on the outer surface 6 at the front end side, and the folding and ring piece 70 is installed, The fabric pulling bead portion 5 is formed in a shape in which the end of the frame piece 1a is folded, and the bar receiver 58a is extended to accommodate the end of the reinforcing bar 21 as a whole.

A groove-shaped hole 6a is formed in the outer surface of the frame piece 1a on the front end side, and a groove 7a is formed in the bottom surface of the hole 6a. The uneven surface 8 is formed on the inner surface of the groove 7a similar to the groove 7. The sides of the hole 6b are not upright and have an inclined angle that can be opened outward by an angle of about 160 degrees.

In addition, the edge portion of the fabric (not shown) is folded below the groove 7 at the rear of each of the frame pieces 1a to 1d, and the fold and the ring piece 70, which folds the fabric and is hooked, extends. . The edge of the fabric (not shown) is folded and folded by the hook piece 95, and a retainer (not shown) such as a U-shaped clip is fitted into the folding and hook piece 95 to fix the edge of the fabric. do. If a hook, such as a hook, is attached to the wall, the fold and hook piece 70 is hooked with a hook or the like to suspend the fabric pulling frame.

In this embodiment, by the installation of the grooves 7a, the fabric does not have to be sized to extend the grooves 7, so that the fabric can be saved, and the corners of the frame pieces 1a to 1d can be saved. This makes folding the canvas fabric easier. In this case, since the outer circumferential surface of the fabric pulling frame is preferably covered with an architrave, the shape is improved.

In addition, since the holes 6a are formed, projections do not have to be provided on the outer surface 6 when the fabric is supported by the grooves 7.

The edges of the fabric that are pulled and fixed by the fixing device 3 are folded in the folding and loop pieces 70 and fixed to the folding and loop pieces 70 with retainers such as clips. That is, the form is improved. In addition, by the hook, the folding and the hook piece 70 is caught on the hook that is installed on the wall, the fabric pulling frame can be conveniently caught on the wall.

The rest is similar to Example 7. The folding and ring pieces 70 may be provided only in the frame piece 1a serving as the upper frame.

A painting fabric pulling frame to which Example 11 is applied is described with reference to FIGS. 19 to 21. That is, in the present connection structure, the member 1 to be connected has a hollow connection part 4 as a recess in the end face 85, and an uneven surface 15 serving as a projection is formed on the inner surface of the hollow connection part 4. , A pin insertion hole 74 communicating with the hollow connection part 4 and an uneven surface 15 serving as a protrusion are formed on the inner surface of the hollow connection part 4, and a pin insertion hole communicating with the hollow connection part 4 ( 74 is formed on the side. In the present embodiment, the grooves 7 and 7a are formed at two positions on the outer surface and the rear surface of the frame piece 1a as shown in Fig. 20, and several uneven surfaces 15 having vertically extending beads are formed. It is formed on the opposite side surfaces of the grooves 7 and 7a. In addition, the hollow connection portion 4 is formed, has a large width three times the thickness, has an angular cross section, and has several uneven surfaces 15 having an angular crest and acting as vertically extending protrusions formed on the entire inner circumferential surface. . In addition, the fold and the hook piece 70 are suspended from the rear of the groove 7 on the rear side, and the edge portion of the fabric which is pulled and fixed in the grooves 7 and 7a by the fixing device 3 (see Fig. 3) is the embodiment 11 And fold in the ring piece 70 similarly. In addition, a suspender 77 to which the bar 21 (see FIG. 2) is attached is formed. The frame pieces 1b to 1d are similar to the frame piece 1a. However, the folded and loop pieces 70 may be formed only in the frame piece 1a, and the suspender 77 is formed only in the frame pieces 1a and 1c. These frame pieces 1a to 1d are extruded from a metal such as aluminum.

The connecting member 2 has an adjacent portion 86 in contact with the end face 85 at one end thereof, a protrusion 23 and 24 protruding from the adjacent portion 86 and fitted into the hollow connecting portion 4. 73 is formed in the protrusions 23 and 24 at positions aligned with the pin insertion holes 74. As shown in FIG. In this embodiment, the connecting member 2 is extruded from a plastic material such as thermoplastic resin (nylon 6, nylon 66) in which about 30% of glass fibers are mixed. As shown in the plan view, the connecting member is L-shaped, has several grooves 7 ', 7a' continuous at one end of the continuous grooves 7, 7a, and several unevenness having beads extending in the longitudinal direction. A surface 8 'is formed on opposite sides of the grooves 7', 7a 'as shown in FIG. In addition, a fabric pull bead portion 5 ′ is formed which is connected to the fabric pull bead 5. In addition, the projections 23 and 24 corresponding to the opposite ends 2a and 2b of the connecting member 2, which are fitted to the hollow connecting portions of the frame pieces 1a to 1d, are arranged at intervals from each other and extend horizontally. Uneven surfaces 22 and 22a having beads are formed on the side surfaces of the protrusions 23 and 24 other than the opposing surfaces. The longitudinal length a and the horizontal length b of the pair of protrusions 23 and 24 as shown to form the front side 86 are longitudinal length a 'and horizontal length b' (see FIG. 20). And a> a ', b> b'. When the crests of the uneven surfaces 22 and 22a cross the uneven surfaces 15, they are recessed to make intimate contact connection. The uneven surfaces 22 and 22a are harder than the synthetic resin connection 2 because the frame pieces 1a to 1d are made of aluminum, and thus have a angular width pitch that is gentle compared to the uneven surface 15.

Moreover, the protrusion part 23 is formed with the pin attachment part 73 by which the threaded pin inserted in the pin insertion hole 74 of the frame piece 74 is tightened firmly. The pin attachment portion 73 can be connected by a pin. In addition, a continuous suspender 77 'connected to the suspender 77 is formed, and a continuous folding and ring piece 70' connected to the folding and ring piece 70 is formed in the ring hole 78. The connecting member 2 is made of synthetic resin. Reference numeral 79 denotes a concave portion that is lightened in consideration of formation.

In addition, the same reference numerals are attached to components common to the tenth embodiment.

Further, in this fabric pulling frame, the frame pieces 1a to 1d are arranged in a frame manner, and the frame pieces 1a to 1d are pushed together to compress the connecting member 2 to the ends of the frame pieces 1a to 1d. The connecting member is placed between the). At this time, the hollow connecting portion 4 of the frame pieces 1a to 1d and the protrusions 23 and 24 of the connecting member 2 are connected to each other with the crest of the uneven surface 15, and the crest of the uneven surface 22 is They are pressed against each other, and only the crest of the uneven surface 22 is recessed because the connecting member 2 is made of a plastic material. In addition, the crest of the uneven surface 22a is also recessed and pressed against the inner surface of the hollow connecting portion 4. Next, the pin 73 is lodged in the pin attaching portion 73 via the pin insertion hole 74, so that the connecting member is restrained from falling off the frame pieces 1a to 1d.

In the present embodiment, when the projections 23 and 24 are fitted into the hollow connecting portion 4 of the member to be connected 1, the crest of the uneven surface 22 is press-fitted while the connecting member 2 is fitted, thus fitting This becomes convenient, and the adjacent part of the connecting member 2 can be reliably adjacent to the end face 85 of the to-be-connected member 1, and thus can be closely connected. Moreover, since the cross sections of the to-be-connected member 1 do not contact each other, there is no restriction in the form of the cross section. Therefore, the cross section 85 can be cut at an angle of 45 degrees. In addition, since the intermediate part of the connecting member 2 is exposed from the connected member 1, when the material of the connecting member 2 is different, between the adjacent portion 86 and the end surface 85 of the connected member 1. Somewhat limited gaps can be made fine.

The difficulty in removing the connecting member 2 without pinning can be determined depending on the degree of fitting the projections 22 and 23 to the hollow connecting portion 4.

Further, the connecting member 2 can be reliably suppressed from falling off by attaching the pin to the pin attachment portion 3 through the pin insertion hole 74.

In addition, when the pair of protrusions 23 and 24 are fitted to the connecting portion 4, they tend to elastically deform with each other, so that the fitting into the hollow connecting portion 4 can be easily performed, and the uneven surface 22 Due to the pressure contact of the crest of 22a, it can hardly be moved in the pulling direction.

Grooves 7, 7a, 7 ', 7a' are formed and extend from the outer surface to the rear face of the member 1 and the member 2 to be connected. The pin is fixed and the pin attachment portion 73 penetrates the hole. The threadless pin can be press-fitted into a hole having a protrusion formed on the inner surface of the pin attachment portion 73 and fixed.

In addition, although the uneven surface 15, 22, 22a is formed on the member 1 and the member to be connected, it can be formed only in one of them. In addition, the connecting member 2 is made of metal together with the connecting member 1. Also, if the hardness of the uneven surfaces 15, 22, 22a is the same or smaller, the crests of these uneven surfaces are recessed, but if the projections are harder, they are pushed onto a smoother surface or projection.

Fig. 23 shows a deformation of the protrusion, which is one of the uneven surfaces 15, 22, 22a, and Fig. 23 (a) shows an angular shape in cross section with a curved crest, and Fig. 23 (b) shows an angled crest. And a cross section having a gentle inclined surface shows an angular shape. Reference numeral 81 shows an example of the crest 80 that is recessed. The uneven surface 22 may be formed in a conical or pyramid shape in addition to the bead shape, and may have spots. In this case, the uneven surfaces 15, 22, 22a are arranged to represent letters, numbers, symbols, and the like.

FIG. 24 is a partially enlarged view showing a state in which the uneven surface 22 is press-fitted into the uneven surface 15, and the uneven surface 15 has a bottom length a of 1 mm and a height h of 1 mm. Has a crest, and the uneven surface 22 has a crest having a bottom length e of 0.5 mm and a height b of 0.3 mm, and each crest 15b: height d ₂ = 0.2 mm, 22b: height d ₁ = 0.1 mm) is recessed and connected. In this embodiment, the pitch, shape and size of the uneven surface 15 are larger than the uneven surface 22. However, the uneven surface 15 may be the same as or larger than the uneven surface 22. On the other hand, the pitch of the uneven surface 15 may be small, and the pitch of the uneven surface 22 may be large. 23 and 24 can be applied to the case where the connecting member 2 and the connected member 1 fitted to the connecting member 2 are made of aluminum. In addition, it is applicable to all the above embodiments and the embodiments mentioned below. Embodiment 12 of the present invention is shown in FIG. That is, the connecting structure includes a plurality of plate members 93 and 93 'having half overlapping surfaces 90 and 91 formed on at least one of the rear surface of one side or the front surface of the other side, and the preceding half overlapping surface 90. Concave between the half overlapping surfaces 90, 91 of the plurality of plate members 93, 93 'and the concave portions 92, which overlap the half overlapping surfaces 90, 91, which overlap with each other; It has a connecting member 94 fitted to the portion 92.

In this embodiment, the rising piece 95 is provided inside the recess between the half overlapping surfaces 91, and the plate members 93, 93 'are extruded. When the plate members 93 and 93 'overlap each other, a watertight packing 97 is interposed between the rising piece 95 and the inner end 91a. In addition, an attachment hole 96 into which the attachment screw 95 is inserted is formed, so that the plate members 93 and 93 'are attached to the base (not shown) by attaching the screws. In addition, the uneven surface 15 is formed in the inner surface of the recess 92.

The connecting member 94 is formed of a hollow body 98 having a substantially rectangular cross-sectional shape, and has a side portion that is convexly curved to the outside. The convexly curved surface 97 is formed on the opposite side, and the uneven surface 22 is formed on the outer surface, the connecting member 94 is extruded and cut at the predetermined length position 94a. The crest of the concave-convex surface 15 on the recess side can be made larger, and the crest of the concave-convex surface 22 of the connecting member 94 can be made smaller, so that the connecting member 94 can be easily press-fitted. have.

With this installation, several plate members 93, 93 'have a predetermined positional relationship and can be connected in a simple manner, continuously, vertically and crosswise, and the connecting member 94 and plate members 93, 93' are It can be produced simply by extrusion. When the connecting member 94 is pressed into the recess 92, the convex curved surface 97 is elastically deformed, and thus the connecting member 95 can be easily pressed into the recess 92. In addition, connectivity can be enhanced. The uneven surfaces 15 and 22 may be formed on any one of the recess 92 or the connecting member 94. That is, it does not need to be formed on two components. Further, in the recess 92, the crest of the concave-convex surface 22 can be made higher and higher from the connecting side inward, and thus the connecting member 94 can be more easily fitted into the recess 92. FIG. Stronger connections can also be maintained. Also, with this configuration, the crest of the uneven surface 15 can be made higher and higher toward the fitting side.

The fabric pull frame of Example 13 is shown in Figures 26-30. Fig. 26 shows a cross section of the frame piece 1a, in which the bar receiver 58 protrudes in the inner direction of the fabric pulling frame, the connection hole 100 is formed in the bar receiver 58, and the reinforcing bar fixing groove ( 101 is formed on the inner surface 43 of the frame piece 1a as a fabric pulling frame. In addition, the reinforcing bar fixing groove 101 is formed on the inner surface of the uneven surface 15. The same arrangement is taken for the other frame pieces 1b to 1d. These frame pieces 1a to 1d are extruded. Further, the hollow connection 4, the groove 7, the concave-convex surface 15, the concave portion 34, the weaving bead portion 46 and the like are similar to those of the preceding embodiment shown in FIGS. 9 and 11. That is, the same reference numerals are given to the common members.

FIG. 27 shows a reinforcing bar having a through hole 103 aligned with the connection hole 100 at one side of the end, and a side groove 102 aligned with the reinforcing bar fixing groove 101 formed at one side of the end. 21 is a cross-sectional view. In addition, the side groove 102 is formed as an uneven surface 15 therein. The reinforcement bar 21 is also extruded.

28 and 29 show the reinforcing bar connecting member 104 formed of the uneven surface 22 arranged vertically on the outer surface. The reinforcing bar connecting member 104 is also formed by cutting the extruded straight body to have a predetermined length.

30 is an assembly view of the attachment of the reinforcement bar 21. One end of the reinforcing bar 21 is made to contact the bar receiver 58 and the inner surface 43, and the reinforcing bar connecting member 104 is horizontally pressed into the side groove 102 as shown by the arrow L ₁ . Will be pushed back. In addition, the reinforcing bar connecting member 104 is pushed vertically to fit in the reinforcing bar fixing groove 101. Screws are inserted into aligned holes and tightened through holes to secure the reinforcement bar. Therefore, the reinforcing bar can be attached simply and reliably.

With such a connecting structure according to the present invention, when the projection of the connection member is fitted to the recess of the member to be connected, the crests of the projection are fitted together while allowing the crests of the projection to be pressed against the inner surface of the recess, so that the adjacent portions of the connection member are connected to each other. Since it can be surely adjacent to the cross section, a close connection can be made. In addition, since the cross sections of the member to be connected do not have surface contact with each other, the shape of the cross section is not limited.

Claims (4)

To-be-connected member having a recessed section, A connecting member having a proximal portion protruded from the proximal portion and the proximal portion adjacent to the end surface of the to-be-connected member and fitted into the concave portion, And at least one of an inner surface of the concave portion and an outer surface of the protrusion, the connecting structure comprising a crested protrusion which is pressed against each other. The pin insertion hole of claim 1, wherein a side of the connected member has a pin insertion hole communicating with the recess, and the connection member has a pin attachment portion at the protrusion in a position aligned with the pin insertion hole. Connection structure, characterized in that the pin is installed to be attached through the pin attachment portion. The connecting structure according to claim 1, wherein the protrusions are arranged at intervals from each other, and the pair of protrusions are fitted together with the recesses. Each side of the fabric pulling frame is defined, with a concave section on the cross section, a fabric pulling bead portion on the front surface, a groove extending from the outer surface to the rear surface, and a frame piece having an uneven surface formed on the inner surface of the groove and fixed by friction. , At an end adjacent to the cross section adjacent to the cross section, a protrusion projecting from the adjoining portion fitted into the groove, a connecting bead leading to the fabric pulling bead on the front surface, and an end of the groove connected to the outer surface Continuous grooved connecting members extending to the rear, and The fabric pulling frame, characterized in that it is provided on any one of the inner surface of the recess and the outer surface of the protrusion, the projection having a crest is pressed against each other.