KR19990022801A - Connecting structure and fabric pulling frame using the same - Google Patents

Abstract

Members to be coupled (1a-1d) have hollow coupling parts (4) at opposite side surfaces, a coupling member (2) has, at opposite ends, press-fitting parts (11) which are press-fitted in the hollow coupling parts, and angle shape concavities and convexities (22) having crests which are corrupted upon press-fitting are formed on at least either one of an inner peripheral surface of the hollow coupling part and an outer peripheral surface of the press-fitting part. When the opposite end parts of the coupling members are press-fitted in the hollow coupling parts of the members to be coupled, the crests of concave parts of the angle shape concavities and convexities are corrupted by the opposed surface so as to be made into close contact with and firmly coupled to the associated surface. Thereby it is possible to securely couple a pair of members to be coupled by means of a simple press-fitting operation.

Description

Connecting structure and fabric pulling frame using the same

Conventionally, a pair of connecting members having a hollow connecting portion are connected to each other by a connecting member interposed therebetween, the hollow connecting portion is compressed by a press or the like to fix the connecting member, or the member is formed at a hole formed in the connecting member and the connecting member. The screws were connected to each other by tightening. However, such a complicated work has a problem in that the connected member is connected by the connecting member.

Further, in the connecting structure in which the projection of the connection member is fitted to the hollow connection of the member to be connected, if the internal volume of the hollow connection portion is set to be substantially equal to the external volume of the projection, the hollow connection portions fitted to the projection and the projection are caused by friction with each other. Can stick. However, such a connecting structure requires a great force for the connection. It also makes the volume error loosen, making it difficult to pull off or to pinch.

In addition, there is a connecting structure in which the connecting member is covered by a pair of connected members when the connecting members are connected to each other by being inserted into the hollow connected member. However, in such a connecting structure in which the cross section of the member to be made is a surface in contact with each other without a gap, the shape of the cross section is limited such that the edge is cut at an angle of, for example, 45 degrees. In addition, the fitting of the connecting member to be connected is difficult, and a gap is found between the end faces of the connected member, resulting in an incomplete form. On the other hand, if the fit is slightly loosened, the connection is less stable.

Accordingly, it is an object of the present invention to provide a connecting structure that can simplify the connecting operation.

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

Still another object of the present invention is to provide a connecting structure and a fabric pulling frame.

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

FIELD OF THE INVENTION The present invention relates to a connecting structure adapted to connect at the edge of a fabric pulling frame or at the edge of an architrave that pulls a fabric, such as a painting canvas, or to assemble materials, and also to a fabric pulling using the connecting structure. It's about frames.

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 surface of the corner portion 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 with the connecting member in a state before separation from the hollow body;

Fig. 26 is a sectional view of a frame piece of a 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.

Summary of the Invention

As a result, 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 connected to the hollow portion at the opposite end and adjusted to be press-fitted to the hollow connecting portion at the opposite end, and adjusted to be recessed when fitted. A connection structure is provided, wherein the right-angled concave-convex surface having 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 at the hollow connecting portion of the to-be-connected member, the crest of the right-angled concave-convex surface is recessed by the associated opposing surface so that the connecting members are in close contact with each other. It is firmly connected to the connecting member. 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 hollow connecting portion has a rectangular cross-sectional shape, is formed on the inner circumferential surface so that the uneven surface is disposed around, the connecting member is formed of a V-shaped flat plate in the protruding direction of the bent portion It has the outer surface in which the uneven surface arrange | positioned at the orthogonal direction was 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, so that manufacturing is easy.

In addition, in another form of the connecting structure according to the present invention, the hollow connecting portion has a rectangular cross-sectional shape, is formed on the inner circumferential surface so that the concave-convex surface is disposed around, the connecting member is the concave-convex surface is arranged in the opposite end from the bent portion It is formed of a curved plate formed in.

In this connection structure according to the present invention, since the extending direction of the concave-convex surface crosses each other, the convex crests are recessed and fixed to each other, and the connection member and the connection member are extruded, thereby facilitating manufacture.

Further, in another formation of the connecting structure according to the present invention, the hollow connecting portion has a rectangular cross section, the uneven surface arranged around the inner circumferential surface is formed on at least one of a pair of surfaces of the rectangular cross-sectional shape, at least one convex surface It is formed on the other of the pair of opposing surfaces.

With this connection structure according to the invention, the number of uneven surfaces can be reduced, the connection strength can be counted, and the mold surface of the mold die can be simplified.

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

The connection strength can be enhanced with the connection structure according to the invention.

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

Further, in another form of the connecting structure according to the present invention, a plurality of connected members having a hollow connecting portion and a connecting member formed of an extruded hollow body are installed and cut at the opposite surface so that the connecting member is press-fitted into the hollow connecting portion. An end of the connecting member having a volume capable of being adjusted is inserted into the hollow connecting portion.

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 portion of the member to be connected, the other end of the connecting member is pressed into the hollow connecting portion of the other connected member, Two connected members can be connected to each other by a connecting member. In such an installation where the connecting member can be formed into an extruded hollow body having a dimension that can be cut and pressed into the hollow connecting part, the hollow part of the connecting member will show some elasticity when the end of the connecting member is pressed into the hollow connecting part. As a result, the press-in can be further promoted in comparison with the connecting member without the hollow part, and the connecting member has a high connection force without loosening and is fitted closely to the hollow connecting part, so that the dimensional error of the hollow connecting part and the connecting member can be alleviated. Can be fitted, so that the connection between the members to be connected can be promoted. In addition, since the connecting member is formed by cutting the cast material, manufacturing can be facilitated.

Further, in another form of the connecting structure according to the present invention, the opposite surface of the connecting member is inclined to form an L shape, the connected member is connected at a right angle, the corner portion has a reinforcing member, the opposite cross section thereof Is adjacent to the opposing surface at a position substantially perpendicular to the reinforcing member.

With this connecting structure according to the 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 thickness of the wall of the connecting member. Since the surfaces of the hollow bodies corresponding to the opposite end faces of the connecting member are adjacent, the hollow bodies support these surfaces on the supporting surface so that they can be stably, safely and easily cut, and the opposite ends of the connecting members are hollow connected. It can be easily pressed into the member.

Further, in another form of the connecting structure according to the present invention, an uneven surface is formed on the contact surface of at least one of the connecting member and the connected member.

With such a connecting structure according to the invention in which the uneven surface is formed on only one of the contact surfaces, the connecting member can be easily press-fitted, and the tip of the convex surface is press-fitted with the associated contact surface, thus showing a strong connection force. In addition, an 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.

Further, in another form of the connecting member according to the present invention, a plurality of plate members having a half-lap surface formed on at least one of the rear surface of one side and the front surface of the other side and formed on each half overlapping surface Thus, when the half overlapping surfaces overlap each other, recesses that are opposed to each other and are adjusted to be connected by half-overlapping joining therebetween and connecting members that are adjusted to fit in the recesses on the half-overlapping surfaces of the plurality of plate members are provided.

With this connecting structure according to the present invention, several plates may have a predetermined positional relationship in order, and may be connected vertically or horizontally, and the connecting member may be extruded to facilitate manufacturing.

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

With this connecting structure according to the present invention, when the connecting member is press-fitted in the recess, the bent portion is elastically deformed, so that the connecting member can be easily press-fitted in the recess and the adhesive force can be enhanced.

Further, in another form of the connecting structure according to the present invention, the concave portion has a right-angled concave-convex surface with a large pitch, and the connecting member has a large right-angled concave-convex portion with 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 concave portion of the connected member, the crest of the convex surface is press-fitted because the crest of the convex surface is press-fitted with the associated opposing surface. If the convex surface is formed on one side by being embedded or recessed on opposite surfaces, when the crests of the convex surfaces are recessed with each other or when the convex surfaces are formed on both sides, one of the convex surfaces may be recessed by the other to be closely connected to each other. Therefore, the connecting member can be easily fitted to the connected member, so that it can hardly be 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 connected members has, on one side, a pin insertion hole in communication with the recess, the connecting member being formed on one of the opposing surfaces of the protrusion. And a pin fitting barrel portion located in the cave at a position aligned with the pin insertion hole, wherein the pin is fitted to the barrel portion through the pin insertion hole. With this connection structure according to the invention, in which the pin is fitted to the barrel, the fit between the connection member and the member to be connected is strengthened and hardly detached from each other.

In addition, the connection structure and each connected member according to the present invention has a pin insertion hole in communication with the concave portion in one side, the connection member is a hollow portion and a pin insertion hole in communication with the side of the projection; It has a pair of clamp pieces projecting from the inner surface of the hollow part in the aligned position, and the pin is fixed between the clamp pieces through the pin insertion hole.

Further, in another form of the connecting structure according to the present invention, a to-be-connected member having a concave portion at the cross section, and a projection adjusted to fit into the concave portion having a joint portion adjusted to be adjacent to a cross section of the to-be-connected member at the cross section is protruded. The joining member is installed, and a projection having a crest made by compression bonding with the associated surface is installed on at least one of the inner surface of the recess or the outer surface of the projection.

With this 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 adjacent parts of the connection member are fitted to each other while the crests of the projection are made to press into the inner surface of the recess. Can be reliably adjacent to the cross section of, and thus the connection can be made close. Further, since the end faces of the connected members do not have surface contact with each other, no limitation is applied to the shape of the end faces. In addition, since the intermediate portion of the connecting member is exposed from the member to be connected, if the material of the connecting member is different from others, a gap defined somewhat between the adjacent portion and the cross section of the connecting portion may be made to be negligible by the different materials. Can be.

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

With this connection structure according to the invention, the effect of suppressing the detachment of the connection member can be enhanced.

Further, in another form of the connecting structure according to the invention, the protrusions are arranged side by side with a space between each other, consisting of a pair of protrusions adjusted to fit in the recess.

With the connecting structure according to the present invention, when a pair of protrusions are fitted to the recess, elastic deformation is easily caused in a direction approaching each other, the fitting to the recess is facilitated, and the movement in the direction of detachment is protruded. It can hardly occur due to the compression contact by the crest of 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 to be formed inside, the fabric fixing bead portion formed on the front, extending to the rear between the outer surface, the groove It consists of a groove member for frictionally fixing the uneven surface formed in the inner surface and the connecting member formed by extrusion molding, and the hollow member having an L-shaped cross-section having a dimension that is cut and the opposite end of the connecting member can be fitted into the hollow connecting portion.

With this fabric pulling frame, the connection between the frame pieces is facilitated, and the fabric can be held back and fixed by fitting the fastening device in the groove.

In another form of the fabric pull frame, the folds and loop pieces hanging on the loop and folding the edges of the fabric extend from the height below the groove to the rear of one or more frame pieces defining the upper side of the frame.

With the fabric pulling frame according to the present invention, the edge portion of the fabric which is fixed in the groove and extended by the fixing device is folded by the folding and the ring piece, and is fixed like the other member by the retainer such as the clip to strengthen the shape. In addition, the folding and hook pieces are hooked by the hooks provided on the wall, so that the fabric pulling frame can be conveniently suspended on the wall.

In another form of the fabric pulling frame according to the present invention, a projection 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 sliding surface, so that the canvas pulling pliers A bead portion which interacts with is formed in the groove on the side away from the outer surface.

With the fabric pulling frame according to the present invention, the groove is formed on the inclined surface so that the fixing device is almost invisible, and the shape can be strengthened. Also, by fixing the protrusion of the pliers to the pliers interacting bead, the fabric can be easily and perfectly stretched on the inclined surface under the lever action, and the bead supporting the support protrusion of the pliers can linearly protrude and occupy a position easily. The pulling operation can be facilitated and can also be fixed in the groove in the textile pulling state.

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.

With the fabric pulling frame according to the invention, the fabric is held using the head of the fixing device in the vicinity of the bead, so that the fabric can be pinched on the bead, so that the fabric is hardly loosened and, due to the installation of the bead, The part is hardly seen from the front side of the frame piece.

Further, in another form of the fabric pulling frame according to the present invention, the frame piece has a bar receiver protruding inwardly of the fabric pulling frame, the connecting hole is formed in the bar receiver, the inside of the frame piece of the fabric pulling frame A reinforcement bar fixing groove formed at a surface, 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 at an opposite side, and having side grooves and reinforcement The connecting member is adjusted to be pressed into the bar fixing groove is installed.

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

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

A connecting member having a crest which is continuous at the end of the groove and has projections formed in at least one of the continuous groove extending from the outer surface to the rear surface, the inner surface of the groove or the outer surface of the projection, and is adjusted to be in compression contact with each other. Is installed.

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 includes a frame piece 1a serving as an upper frame, a frame piece 1c serving as a lower frame, and a frame piece serving 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 frame adjacent to the frame front side rather than the recess 7 and the groove 7 formed in the outer surface defining the outer circumferential surface of the frame. The pulling bead portion 5 and one end of the connecting member 2 are fitted, and have a hollow connecting portion 4 formed at each end. The inner wall surface of the groove 7 is formed of the uneven surface 8 which frictionally fixes the leg of the fixing device 3, and the inner circumferential surface of the hollow connecting portion 4 is formed of the uneven surface 15.

The connecting member 2 has a press-fitting portion 4 which is adjusted to press-fit into the hollow connecting portion 11 at each end. The press-fit portion 11 is formed on the outer circumferential surface having the rectangular concave-convex 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 at the center portion on the opposing surface having a rectangular uneven 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 into the V-shape from the band plate 21 in the longitudinal direction, and thus have a V-shape in plan view and are flat connecting members arranged in a direction perpendicular to the direction of protrusion of the bend. (2) is formed. In this case, as shown in Fig. 4, each connecting member 2 is tapered so that 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 plate 21 may have a slightly larger thickness at the center having a flat front and rear surface, and may be vertically cut in V-shape to form a connection 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. In addition, 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 adjusted to be pulled at 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 surface 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, and the main surface edge portion of the fabric 18 is fabric It is wound on the outer surface 6 of the frame pieces 1a to 1d while being supported by the pulling bead portion 5. 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 penetrates 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 pulled 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 to be easily frictionally fixed to the leg 19 of the fixing device 3. 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 rigid material such as steel stronger than the frame pieces 1a to 1d.

Referring to FIG. 3, a reinforcement bar 21 is shown.

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 crests of the convex portions of the rectangular concave-convex surface 15 are recessed by the associated opposing surfaces. 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-sectional shape, has an uneven surface 15 arranged in the circumferential direction of the inner circumferential surface, the connecting member 2 is a flat V-shaped plate, in a direction perpendicular to the projecting direction of the bent portion It has an outer surface with a concave-convex surface 22 formed thereon. 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.

The rectangular uneven surfaces 15 and 22 may be formed in at least one 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 in 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 a rectangular cross-sectional shape, especially the substantially rectangular cross section, and the unevenness arrange | positioned in the circumferential direction of an inner peripheral surface The surface 15 is formed on one of the opposite facing surfaces of the rectangular shape, and the groove is formed at the center of the other opposite side while the corner portion 25 'which sets the width of the square is left on the opposite side of the groove. In addition, the projections 30 are formed at each other opposing 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 face. 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 a cross-sectional shape at right angles, and the uneven surface 15 disposed around the inner circumferential surface is formed at opposite surfaces of at least one rectangular cross-sectional shape, and at least one protrusion 30 is formed. It is formed at each other opposing surface. In other words, the number of uneven surfaces is reduced, the connection strength is secured, and the molding surface of the forming die can be simplified.

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 at the front side, and spans between the hollow connecting portions 4 and 4a which are placed side by side with the recess 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 in 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 around, 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, fine rectangular uneven surfaces are formed on the outer surfaces of the frame pieces 1a to 1d to suppress 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 upper and lower frames, respectively. The frame pieces 1b and 1d define side frames, and the opposing surfaces 24 at the opposite ends of the respective frame pieces are formed into inclined surfaces 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 in 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, the fixing device It has a recessed concave-convex surface 8 which is adjusted to be frictionally fixed 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 rear face 40, ie on the inner surface 4 side, on the side away from the outer surface 6, and a suspender attachment hole (not shown) is formed. 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 cross-section 4 of the rectangular cross section is set equal to the value obtained by subtracting the wall thickness from the entire width of the frame piece 1a at a position on the outer surface 6 side of the groove 7. In addition, a rectangular concave-convex surface 15 arranged around and having a recessed crest is formed on two surfaces facing toward the outer surface 6 and the inner surface 43 and defined on the inner circumferential surface of the hollow connection 4. do. 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 that can be pressed into the hollow connecting portion, and the opposite end of the connecting member 2 in the cutting direction is referred to as the hollow connecting portion 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. Further, in this embodiment, a reinforcing member 50 is provided at the bent portion at the hollow portion of the connecting member 2, and opposite ends 2a and 2b are opposed surfaces acting as cross sections of the respective frame pieces 1a to 1d. It extends in a direction substantially perpendicular to 55, and is 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 pressed into the hollow connecting portion 4, and the connecting member is pressed into the hollow connecting portion 4, too. Afterwards, the crests of the uneven surfaces 15 and 22 are recessed to increase the connecting force.

The fixing device 3 is adjusted to be compressed into the groove 7 to fix the fabric 18 such as the canvas pulled to the front of the fabric pulling frame, and passes through the fabric 18 installed in the frame piece 1a or the like ( 7) and has a leg portion 18 which is pressed into and fixed in the groove 7 and a head portion 20 which compresses the fabric on the outside 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 portion 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 only by 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, for example, steel, the crest of the uneven surface 8 is stuck while it is recessed.

Referring to FIG. 13, reference numeral 57 denotes a suspender connected at the suspender attachment hole formed in the bead portion 45, so that 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 press-fitted at the hollow connecting portion 4 of the frame piece 1b, so that 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 2a of the is pressed in at 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 insert closely into the connecting portion 4, it is possible to obtain a strong connection force. In addition, the rectangular concave-convex surfaces 15 and 22 can be recessed and engaged with each other to obtain a strong connection force. Therefore, the connection of the frame pieces 1a to 1d can be promoted. In addition, the hollow connection portion 4 has a rectangular cross-sectional shape, and the concave-convex surface 15 is arranged around the inner surface, and the connecting member 2 has an L-shaped cross section, and has an external shape in the direction from the bend to the cross section. It has the uneven surface 22 arranged on the 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 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 press-fitted in the hollow connecting part 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 on 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 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 so that the pulling of the fabric can be facilitated, and the fixing device 3 can also be easily fixed to the groove 7 while 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.

Further, a fabric catching bead portion 46 is formed on 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. It can be caught on the fabric fastening bead portion 46 by holding the fabric 18 using the head portion 20 of the fabric. Thus, the fabric is hardly loosened, and the head portion is formed by the installation of the bead portion 46. 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, rectangular uneven surfaces 15 and 22 can be formed at least in 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, a 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. In this embodiment, the connected member 1 as the frame piece has a concave portion or a hollow connection portion in the cross section, and a pin insertion hole 60 communicating with the hollow connection 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 1 to be connected and has opposing ends 2a and 2b serving as protrusions that are adjusted to fit the hollow connecting portion 4. An uneven surface 33 as a kind of projection having a crest elastically in contact with the associated opposing surface is formed on the opposing surfaces of the opposing end portions 2a and 2b, and the cave 61 is provided with a pinch barrel portion 62. It is formed at another opposing surface of the ends 2a and 2b which are provided at positions aligned with the pin insertion holes 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 a plurality of beads 64 which prevents the axial movement of the pin 63 are formed in 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 opposite ends 2a, 2b of the connecting member 2 serving as protrusions are fitted in the recessed portion of the to-be-connected member 1, that is, the hollow connecting portion 8, the uneven surface forming the projection ( The crest of 12, 14 is in elastic contact with the associated opposing surface. In this configuration, since the connecting member 2 is made of a softer material than the connecting member 1, the uneven surface 15 recesses the crest of the uneven surface 22 to produce 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, the beads are formed in the elliptical barrel portion 62, the pins 63 are fixed between the beads, the 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 manufacturing of the connecting member 2 can be facilitated.

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 rectangular cross section having a rectangular crest are concave in the opposite direction by most of the horizontal direction. The pin insertion hole 60 is formed on the inner surface of the part 8 so that the beads extend in the longitudinal direction of the member 1 to be connected and communicate with the hollow connection part 4, which is a concave part. It is formed on 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, an uneven surface 22 serving as a right sectional projection having a right crest is formed vertically on the outer surface of the connecting member 2 of the opposite ends 2a and 2b by most of them and extends horizontally so that it is vertical. It faces the uneven surface 15. An 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 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. Marked), 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.

Further, if the uneven surface 22 'is formed on the opposing surfaces of the clamp pieces 67a and 67b, when the pin 63 is fixed, the clamp pieces 67a and 67b can be reliably prevented from moving vertically. have. In addition, since the pin 63 is an aluminum nail or rivet having a strength equal to or less than that of the connecting member, 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 cave 6a is formed on the outer side of the frame piece 1a on the front end side, and a groove 7a is formed on the bottom surface of the cave 6a. The uneven surface 8 is formed on the inner surface of the groove 7a similar to the groove 7. The sides of the cave 6b are not upright and have a tilted 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 folded and loop pieces 70 are folded to fold the fabric and also to be hooked. . The edge portion of the fabric (not shown) is folded and folded by the ring piece 95, and a retainer (not shown) such as a U-shaped clip is fitted into the folding and ring piece 95 to fix the edge portion 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 cave 6a is formed, no projections need to be provided on the outer surface 6 when the fabric is supported by the grooves 7.

The edge portion of the fabric pulled and fixed by the fastener 3 is folded in the fold and loop piece 70, and is fixed to the fold and ring piece 70 with a retainer such as a clip. That is, the form is improved. In addition, by the hook, the folding and the hook piece 70 is caught on the hook is installed on the wall surface, the fabric pulling frame can be conveniently caught on the wall surface.

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 connecting portion 4 as a recess in the end face 85, and an uneven surface 15 serving as a protrusion is formed on the inner surface of the hollow connecting portion 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 surface of the grooves 7 and 7a. In addition, the hollow connection portion 4 is formed, has a large width three times the thickness, has a right cross-sectional shape, has a right crest, and several uneven surfaces 15 serving as vertically extending protrusions are formed on the entire inner circumferential surface. . In addition, the fold and loop piece 70 is suspended from the rear of the groove 7 on the rear side, and the edge portion of the fabric which is pulled out of the grooves 7 and 7a by the fixing device 3 (see FIG. 3) and is fixed. And fold in the ring piece 70 similarly. In addition, a suspension piece 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 folding and ring pieces 70 can 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 a contact portion 86 which is adjusted to contact the end face 85 at one end, and protrusions 23 and 24 which protrude from the contact portion 86 and are adjusted to fit the hollow connection portion 4, and the pins The attachment portion 73 is formed in the protrusions 23 and 24 at the position aligned with the pin insertion hole 74. 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 face 8 'is formed at 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 protrusions 23 and 24 corresponding to opposite ends of the connecting member 2 and adjusted to be fitted to the hollow connecting portions of the frame pieces 1a to 1d are arranged at intervals from each other, and have beads extending laterally. Uneven surfaces 22 and 22a are formed on the side surfaces of the protrusions 23 and 24 other than the opposing surface. 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. 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 smoother rectangular width pitch than 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 suspension piece 77 'connected to the hanging piece 77 is formed, and a continuous folding and ring piece 70' connected to the folding and ring pieces 70 is formed at the ring hole 78. do. 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 such a fabric pulling frame, the frame pieces 1a to 1d are arranged in a frame type, and are pushed together and between the frame pieces 1a to 1d which are pressed by pressing the connecting member to the ends of the frame pieces 1a to 1d. The connecting member is interposed. 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 In compression contact with each other, 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 concave-convex surface 22a is also recessed so as to be in compression contact with 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 portions 4 of the to-be-connected member 1, the crests of the uneven surface 22 are in compression contact while the connecting member 2 is fitted, The fitting 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 defined gaps can be made in.

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 compression 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 to-be-connected member 1 and the connection member, 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, when the hardness of the uneven surfaces 15, 22, 22a is the same or smaller, the crests of these uneven surfaces are recessed, and 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 and 22a, and FIG. 23 (a) shows a right sectional shape with a curved crest, and FIG. 23 (b) shows a right crest. And a right angle cross-sectional shape with a gentle inclined surface. 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 side of one side or the front side of the other side, and the preceding half overlapping surface 90. Opposed to the half overlapping surfaces 90 and 91 overlapping with 91 and between the recess 92 and the half overlapping surfaces 90 and 91 of the plurality of plate members 93 and 93 'which are adjusted to be half overlapped. Has a connecting member 94 that is adjusted to fit in the recess 92.

In this embodiment, the rising piece 95 is installed 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 press-fitted in the recess 92, the convex curved surface 97 is elastically deformed, and thus the connecting member 95 can be press-fitted in the recess 92 easily. In addition, connectivity can be enhanced. The uneven surfaces 15 and 22 may be formed in 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 in the recess 92. 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 is a reinforcement in which a through hole 103 adjusted to be aligned with the connection hole 100 is formed at one side of the end, and a side groove 102 aligned with the reinforcing bar fixing groove 101 is formed at one side of the end. The bar 21 is shown. In addition, the side grooves 102 are formed with the uneven surface 15. 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 reinforcement bar 21 is made to contact the bar receiver 58 and the inner surface 43, and the reinforcement bar connecting member 104 is horizontally press-fitted in 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, it is fitted 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.

Claims (27)

A pair of connected members each having a hollow connection on an opposite surface, and And a connecting member having a press-fitting portion pressed into the hollow connecting portion at the opposite end, Connection structure, characterized in that the rectangular concave-convex surface is formed on at least one of the inner peripheral surface of the hollow connecting portion and the outer peripheral surface of the press-fit portion. The method of claim 1, wherein the hollow connecting portion has a rectangular cross-sectional shape, has a concave-convex surface arranged around the inner circumferential surface, the connecting member has an outer surface, the concave-convex surface is arranged in a direction perpendicular to the projecting direction of the bent portion Connecting member, characterized in that the flat V-shaped flat plate. 2. The flat V according to claim 1, wherein the hollow connecting portion has a rectangular cross-sectional shape, has a concave-convex surface arranged around the inner circumferential surface, and the connecting member has a flat V having an outer surface where the concave-convex surface is arranged in the direction of the opposite end from the bent portion. A connecting member, characterized in that the type plate. The method of claim 1, wherein the hollow connection portion has a rectangular cross-sectional shape, the uneven surface arranged around the inner circumferential surface is formed on the opposite surface of at least one rectangular cross-sectional shape, at least one projection is formed on the other opposite surface. Connecting member. The connecting structure according to any one of claims 1 to 4, wherein the hollow connecting portion is provided in plural. The connecting structure of claim 1, wherein each of the plurality of hollow connecting portions has a rectangular cross-sectional shape, and a horizontal direction of at least one hollow connecting portion is perpendicular to a horizontal direction of another hollow connecting portion. And a connecting member having a plurality of connected members having hollow connections at opposing surfaces, and an extruded hollow body that is cut to have a size that can be press-fitted into the hollow connecting portions, and having a connection member having an end insertable to the hollow connecting portion. Connecting structure, characterized in that. 8. The method of claim 7, wherein the opposite surfaces of the connected member are inclined such that the connected members are connected to each other at a right angle, and the connecting member has an L shape having an edge portion where the reinforcing member is installed, and the opposite cross section is the opposite surface. A connecting structure inclined to face substantially perpendicular to the surface and adjacent to each other. The connecting structure according to claim 7, wherein the uneven surface is formed at at least one contact surface of the connecting member and the connected member. 10. The method of claim 7, further comprising a plurality of half-overlapping surfaces at one or more rear surfaces of one side, each having a concave surface facing each other in a state in which the half-overlapping surfaces overlap each of the half-overlapping surfaces and are adjusted to half-overlap with each other. And two connecting members adapted to be fitted between the recesses of the half overlapping surfaces of the plurality of plate members. The connecting structure according to claim 10, wherein the connecting member is formed of a hollow body and has a side portion that is convexly curved to the outside. The connecting structure according to claim 10, wherein the concave portion has a rectangular concave surface with a large pitch, and the connection member has a concave surface with a smaller pitch than the concave surface. A member having a concave portion in cross section, a connecting member having a protrusion adjusted to fit into the concave portion, a protrusion having a crest formed in at least one of an inner surface of the concave portion and an outer surface of the protrusion and elastically contacting each other; Connection structure characterized in that it comprises. The connecting structure as claimed in claim 13, wherein the connecting member is made of a softer or softer material as the connected member. The connecting structure according to claim 13, wherein the connecting member is made of a plastic material which is as soft or soft as the connected member. 15. The connector of claim 13, wherein the member to be connected is formed with a pin insertion hole communicating with the recess at a side thereof, and the connection member has a cave on an opposite side of the protrusion and is aligned with the pin insertion hole. And a pin fitting barrel portion in the recess, wherein the pin is fitted to the barrel portion through the pin insertion hole. The pinned hole according to claim 13, wherein the member to be connected has a pin insertion hole in communication with the concave portion, the connection portion has a hollow portion in communication with a side of the protrusion, and a pair of clamp pieces for fixing a pin is provided with the pin insertion hole. Projecting from an inner surface of the hollow portion at an aligned position, wherein the pin is installed to be fixed between the clamp pieces through the pin insertion hole. A connecting member having a concave portion in a cross section, a connecting member having an adjacent portion adjusted to be adjacent to the end surface of the connected member in a cross section, and a projecting portion projecting from the adjacent portion and fitted to the concave portion, and the concave portion. And a projection having a crest formed on at least one of an inner surface and an outer surface of the protrusion and adjusted to compressive contact with each other. 19. The pinned portion according to claim 18, wherein the member to be connected has a pin insertion hole in communication with the recess at a side thereof, and the connection member has a pin attachment portion at the protrusion at a position aligned with the pin insertion hole, and the pin is the pin. Connection structure characterized in that it is installed to be attached to the pin attachment portion through the insertion hole. 19. The connecting structure according to claim 18, wherein the protrusions are spaced from each other, arranged in parallel with each other, and made up of a pair of protrusions fitted in the grooves. A frame piece having a hollow connection, a fabric pull bead on the front side, a groove extending from the outer surface to the rear surface, and an uneven surface adjusted to be frictionally fixed to the inner surface of the recess, each defining the fabric pulling frame; The connecting member formed from the extruded hollow body has an almost L-shaped cross-sectional shape, the connecting member is cut to have a dimension that can be pressed into the hollow connecting portion, and has an opposite end insertable into the hollow connecting portion. Fabric pulling frame. 22. The fabric pulling frame according to claim 21, wherein the edge portion of the fabric is folded, and the folding and hooking portion hanging on the hook extends to the rear side of the frame piece defining the upper side of the fabric pulling frame at a height lower than the groove. 23. The fabric pulling frame according to claim 21 or 22, wherein the protrusions are formed on the rear surface of the frame piece to form an inclined surface connected to the outer surface of the frame piece at a height lower than the groove. 24. The fabric pull frame according to claim 23 wherein the bead portion has a suspender attachment hole. 24. The fabric pulling frame according to claim 23, wherein a fabric catching bead portion is formed on the inclined surface of the groove on the outer surface side. 22. A bar receiver according to claim 21, wherein a bar receiver protrudes from said frame piece in an inner direction of said fabric pulling frame, a connecting hole is formed in said bar receiver, and a reinforcing bar fixing groove is formed on an inner surface of said frame piece as said fabric pulling frame. And a reinforcing bar having a through hole aligned with the connection hole at the side of the end, and having a side groove aligned with the reinforcing bar fixing groove, the reinforcing bar being formed at an opposite side, and the connecting member having the side groove. And a fabric pulling frame which is installed to be press-fitted in the fixing groove. A frame piece defining each side of the fabric pulling frame, having a recess in the cross section, a fabric pulling bead portion in the front face, a groove extending from the outer side to the rear side, and an uneven surface formed at the inner side of the groove and fixed frictionally. , A proximal portion adjusted to be adjacent to the cross section at an end, a protruding portion protruding from the groove, a continuous bead connected to the fabric pulling bead at the front side, and connected to an end of the groove; A connecting member having a continuous groove extending from the outer surface to the rear surface, and And at least one of an inner surface of the concave portion and an outer surface of the protrusion, and having a projection having a crest in compression contact with each other.