JP2002345346A - Joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint capable of preventing deformation of a pipe or a dovetail-grooved frame, even when a wedge is excessively driven, by avoiding air gaps between the pipe and the dovetail-grooved frame. SOLUTION: In this joint having a fastening ironwork 1 and the wedge 2, the fastening ironwork 1 is composed of a frame body comprising a forked continuing part 1a, a cutout 3 which is formed in the forked continuing part 1a of the frame body and side pieces 1b, 1c thereof located on both the sides of the continuing part 1a, hooks 4 protruding from side edges of an opening of the cutout 3, and wedge-inserting holes 5 which are formed on the side pieces of the frame main body so as to face to each other. Further, the pipe 7 is inserted into a space between the side pieces 1b, 1c, the dovetail-grooved frame 8 is inserted into the cutout 3 in the direction perpendicular to the pipe 7, and the wedge 2 is driven through the wedge-inserting holes 5, so that the dovetail- grooved frame 8 is fastened by the pipe 7 and the hooks 4. Furthermore, a pipe-supporting part 6 having a circularly arced surface 6a for supporting the pipe is formed by subjecting the forked continuing part 1a to drawing work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a greenhouse,
The present invention relates to a joint suitable for stretching and fixing a vinyl sheet in a simple house such as a greenhouse.

[0002]

2. Description of the Related Art In a recent simple house such as a greenhouse or a greenhouse, a transparent vinyl sheet is stretched on a roof and a side face of any type such as a pipe house, a large steel frame house, and a multi-story house. It is normal to absorb the solar heat into the house through.

However, since the work of stretching the vinyl sheet on the roof and side of a simple house is extremely troublesome,
A fixing device capable of easily fixing a vinyl sheet has been developed (utility model registration No. 1057415).

In this fixing device, a vinyl sheet is opposed to a dovetail groove frame for sheet fixing, which is bent and formed into a dovetail shape in cross section, and the vinyl sheet is placed on a dovetail of a long supporting frame by a corrugated locking line from the upper surface. It is designed to be pressed and clamped in a groove and fixed.

[0005] Before and after the fixing operation of the vinyl sheet, the dovetail frame is fixed to the frame of the greenhouse using a joint, and the entire frame is covered with the vinyl sheet to complete the greenhouse. Is done.

The joint comprises a bifurcated frame main body having a U-shaped cross section or a U-shaped cross section. The frame main body is laterally located in the middle of the vicinity of the bifurcated portion. A notch for guiding the dovetail frame is provided, and a wedge insertion hole is provided at a position facing each side piece that is bifurcated.

Accordingly, a pipe as a skeleton is inserted into the forked portion of the frame body, a dovetail frame is inserted into the cutout in a direction perpendicular to the pipe, and a wedge is driven into the wedge insertion hole, thereby forming a pipe. The dovetail frame can be firmly held between the frame body and the frame.

[0008]

However, in a conventional joint, a pipe inserted in a U-shaped cross section of a frame body and a dovetail inserted in the cutout in a direction perpendicular to the pipe are provided. Since the frame and the frame are only in line contact with each other, a large gap is formed between the pipe and the dovetail frame except for the line contact portion. When the groove frame is pressed and held, a large stress acts on one or both of the pipe and the dovetail frame, and there is a problem that these are deformed.

Further, there is a problem that a hook provided at an opening edge of the notch for holding the dovetail frame in the notch is damaged or deformed.

Further, in a portion where the pipe is curved in an arch shape, since the pipe has an elliptical cross section, the line contact area is further shortened, and the press-contact holding force is increased, thereby causing play. There was a problem that it became easier.

After the dovetail frame is attached to the pipe using the joint, when laying the vinyl sheet as described above, the worker works, for example, by using a portion where the dovetail frame and the pipe intersect as a scaffold. When workers work
There is a problem that a part of the dovetail frame is rotated, deformed, or damaged due to the presence of the gap.

The present invention solves the above-mentioned problems, and eliminates the gap between the pipe and the dovetail frame so that these pipes can be used in a case where the wedge is driven excessively. Can prevent deformation of dovetail frame,
It is another object of the present invention to provide a joint capable of preventing rotation of the dovetail frame when working with a portion where the pipe and the dovetail frame intersect as a scaffold, and deformation of the pipe and the dovetail frame.

[0013]

To achieve the above object,
The joint according to the first aspect of the present invention includes a clamp and a wedge. The clamp includes a bifurcated frame main body having a U-shaped cross section or a U-shaped cross section, and a bifurcated portion of the frame main body. Notches formed in side pieces continuous on both sides of this part, a pair of hooks projecting toward the notch side at upper and lower opening edges of the notch, and opposing parts of the side pieces of the frame body A wedge insertion hole formed in the frame body, a pipe is inserted between the side pieces of the frame body, a dovetail frame for sheet fixing is inserted into the notch in a direction orthogonal to the pipe, and the wedge is wedge-shaped. In a joint in which the dovetail frame is sandwiched by the pipe and the hook by being driven into the insertion hole, a forked portion of the frame main body forming the cutout is drawn to form a circular arc surface for pipe support. With Wherein the type supporting part is formed.

As a result, a large gap is formed between the outer periphery of the pipe inserted into the U-shaped or U-shaped cross section of the frame main body and the dovetail groove frame arranged to intersect the pipe. By receiving the stress acting on the pipe due to excessive driving of the wedge by the pipe supporting portion, it is possible to prevent the pipe from applying excessive stress to the dovetail frame.

According to a second aspect of the present invention, a joint comprises a clamp and a wedge. The clamp has a bifurcated frame body having a U-shaped cross section or a U-shaped cross section, and a bifurcated shape of the frame body. Notch formed in a part continuous with the side part and side pieces continuous on both sides of the part, a pair of hooks protruding toward the notch side at upper and lower opening edges of the notch, and each of the above-mentioned frame body. A wedge insertion hole formed at the opposing portion of the side piece, a pipe is inserted between the side pieces of the frame body, and a dovetail groove frame for sheet fixing is inserted into the notch in a direction orthogonal to the pipe. By inserting a wedge into the wedge insertion hole, the joint that holds the dovetail frame between the pipe and the hook is inserted into the bifurcated portion of the frame main body forming the cutout. Fold in direction Gerare Te, pipe support piece for supporting the inserted pipe outer peripheral by arcuate surface is characterized by comprising integrally disposed consecutively.

Accordingly, the bent pipe support piece receives the stress acting on the pipe due to the driving of the wedge,
This stress is prevented from directly acting on the dovetail frame, thereby preventing deformation of the dovetail frame.

According to a third aspect of the present invention, the joint comprises a holding member and a wedge. The holding member includes a bifurcated frame body having a U-shaped cross section or a U-shaped cross section, and a bifurcated shape of the frame body. Notch formed in a part continuous with the side part and side pieces continuous on both sides of the part, a pair of hooks protruding toward the notch side at upper and lower opening edges of the notch, and each of the above-mentioned frame body. A wedge insertion hole formed at the opposing portion of the side piece, a pipe is inserted between the side pieces of the frame body, and a dovetail groove frame for sheet fixing is inserted into the notch in a direction orthogonal to the pipe. Then, by driving a wedge into the wedge insertion hole, in a joint for holding the dovetail frame by the pipe and the hook, the joint is symmetrically arranged near a bifurcated portion of the frame body forming the cutout, and each Pieces bent in the direction, a pair of pipe support piece for supporting the inserted pipe outer circumferential arc surface is characterized by comprising integrally disposed consecutively.

Thus, the pipe supporting pieces bent so as to face each other receive a stress acting on the pipe due to the driving of the wedge, and this stress is prevented from directly acting on the dovetail frame. The deformation of the frame can be prevented.

[0019]

FIG. 1 is a perspective view showing a joint according to the present invention, which comprises a clamp 1 and a wedge 2. FIG.

Among these, the holding member 1 has a bifurcated frame body 1A having a U-shaped cross section or a U-shaped cross section as a whole, and a portion 1a continuous in the forked shape and a pair of Notches 3 are formed in the side pieces 1b and 1c,
A pair of hooks protrude from each of the notches 3 at the opposite edges of the continuous portion 1a.

A wedge insertion hole 5 is formed in the opposing portion of each of the side pieces 1b and 1c.

These wedge insertion holes 5 are substantially U-shaped, and wedges described later are inserted in these wedge insertion holes 5 in the horizontal direction.
Driven.

As shown in FIG. 1, the continuous portion 1a is machined in an arc shape, but is straight before machining.

The bifurcated portion 1a is divided into upper and lower portions by forming the notch 3 in the holding metal fitting 1 having a U-shaped cross section, and each of these portions is drawn in an arc shape. To form a pipe support 6 having an arc surface 6a.

The pipe support 6 has an arc diameter substantially equal to the diameter of the pipe to which the clamp is attached.

As shown in FIG. 2, the joint constructed as described above connects a plurality of pipes 7 serving as a framework such as a greenhouse and a dovetail groove frame 8 attached to intersect these pipes. Used to hold.

The vinyl sheet 9 is provided so as to cover the entirety of the pipe 7 and the dovetail groove frame 8. A part of the vinyl sheet 9 is inserted into the dovetail groove of the dovetail groove frame 8. It is pushed by the strip and is held by the pinching pressure.

FIG. 3 is an exploded perspective view showing an assembly structure of the joint. The assembly procedure will be described with reference to FIG.

First, the dovetail frame 8 is inserted horizontally into the notch 3 of the holding fixture 1, and at this time, the upper and lower guide grooves 8 a at the upper and lower ends of the dovetail frame 8 are protruded from the opposing edges of the notch 4. Each hook 4 is slidably fitted.

The guide groove 8a is formed into a shape as shown in the drawing when the upper and lower portions of the members forming the dovetail frame 8 are bent to process the dovetail groove.

Next, for each of the pipes 7 arranged as shown in FIG.
Insert b and 1c.

As a result, the dovetail frame 8 is interposed between the hook 4 and the pipe 7 and is supported in a direction crossing the pipe 7.

Next, a wedge 2 having a horizontal M-shaped cross section is inserted from one end into the other of the wedge insertion holes 5 formed in the holding member 1, and then the wedge insertion holes 5 are strongly inserted by a hammer or the like. I will drive in.

Since the surface of the wedge 2 on the side of the notch 3 has a tapered shape, the tapered surface of the wedge 2
, The dovetail frame 8 is strongly pressed toward the hook 4 side.

For this reason, the pipe 7
The dovetail frame 8 is firmly held.

In this case, the pipe 7 is connected to the holding fitting 1.
In the portion 1a which is continuous in a forked shape, it is supported on the arc-shaped surface 6a of the drawn arc-shaped pipe support portion 6 without any gap in a line contact state over substantially a half circle.

For this reason, even if the driving force and the driving amount of the wedge 2 are slightly excessive, it is ensured that the pipe 7 itself and the dovetail frame 8 pressed by the pipe 7 are greatly deformed or damaged. Can be prevented.

At the portion where the pipe 7 bends as shown in FIGS. 2 and 4, the cross-sectional shape becomes elliptical as shown in FIG. Although a slight gap may occur, the pipe 7 itself can be tightly supported by the pipe support 6 over a substantially semicircular circumference due to the slight bending of the pipe 7 itself due to the driving of the wedge 2. it can.

Therefore, transmission of excessive stress from the pipe 7 to the dovetail frame 8 can be prevented, and deformation of both the pipe 7 and the dovetail frame 8 can be prevented.

Further, since the hook 4 is strongly fitted into the guide groove 8a of the dovetail frame 8 by the driving of the wedge 2, the fallout of the dovetail frame 8 from the hook 4 can be prevented.

Next, the dovetail frame 8 and the pipe 7 held by the clamp 1 as described above are covered with a vinyl sheet 9 and a part thereof is pushed into the dovetail groove 8b of the dovetail frame 8, and from above. Press-fit the corrugated locking line 10.

As a result, the vinyl sheet 9 can be firmly fixed to the dovetail frame 8, and as a result, a greenhouse as shown in FIG. 2 is constructed.

FIGS. 6 and 7 show a structure in which the dovetail frame 8 is fixed to a straight pipe 7 using the joint shown in FIG. 1. The pipe 7 has a perfect circular ring cross section. None, therefore, even when the wedge 2 is pressed into the wedge insertion hole 5, the arc-shaped pipe support portion 16 supports a substantially semicircular portion of the pipe 7, and stress concentrates only on a part of the pipe 7. Can be avoided.

Therefore, the deformation of the pipe 7 and the deformation action of the dovetail frame by the pipe 7 can be reliably avoided.

FIGS. 8 and 9 show another embodiment of the holding member 1 according to the present invention. The holding member 1 has a U-shaped cross section and is divided into two parts by a notch 3. Instead of performing the drawing process as described above, pipe support pieces 12 each having an arcuate surface 11 as an arcuate support portion at an end thereof are provided in each of the bifurcated portions 1a in the vertical direction. It was done.

This pipe support piece 12 is provided at the same time when the clamp 1 is formed, and is centered around the base indicated by the dotted line.
As shown in FIG. 9, it is bent substantially horizontally in the direction (arrow direction) between the forked side pieces 1b and 1c.

For this reason, each arc surface 11 has side pieces 1 b, 1
A substantially semicircular portion of the pipe 7 inserted between c is directed in a direction in which the pipe 7 is closely supported.

Accordingly, the dovetail groove frame 8 is inserted into the notch 3 as described above, and then the pipe 7 is inserted between the side pieces 1b and 1c of the forked portion so as to cross the dovetail frame 8. Then, even when the wedge 2 is inserted into the wedge insertion hole 5 and driven into the wedge, the pipe 7 is stably supported on the arcuate surface 11 by approximately half the circumference of the pipe 7. 8 is not pressurized.

Thus, deformation due to stress concentration on a part of the pipe and deformation and breakage of the dovetail frame 8 can be prevented.

FIG. 10 and FIG. 11 show still another embodiment of the holding member 1, which is a side piece 1b, 1c holding a bifurcated portion 1a in the holding member 1 having a U-shaped cross section. In addition, pipe support pieces 14 each having an arc surface 13 as an arc-shaped support portion at the end are connected in the vertical direction.

The pipe support piece 14 is also provided at the same time when the clamp 1 is formed.
As shown in FIG. 11, it is bent substantially horizontally in the direction (arrow direction) between the side pieces 1b and 1c so as to face each other. For this reason, each arc surface 13 closely supports approximately a quarter of the circumference of the pipe 7 inserted between the side pieces 1b and 1c as described above, and a total of approximately a half circumference. Turn in the direction.

Accordingly, when the dovetail groove frame 8 is inserted into the notch 3 and the pipe 7 is subsequently inserted as described above, and the wedge 2 is driven into the wedge insertion hole 5, Therefore, the deformation of the pipe 7 due to the stress concentration and the deformation and breakage of the dovetail frame 8 due to the pressing force from the pipe 7 can be prevented.

As shown in each of the above embodiments, the pipe 7 is supported by the pipe support portion 6 and the pipe support pieces 12 and 14 in the holding fixture 1, so that the pipe 7 is bifurcated with the pipe 7. There is no useless gap between the portion 1a.

Therefore, the pipe 7 is stably held by the wedge 2 in the holding fixture 1, and the load on the feet of the worker concentrates on one guide groove 8 a side of the dovetail groove frame 8 when the vinyl sheet 9 is laid. Therefore, even if a downward or rotational force is applied, the dovetail groove frame 8 is stably supported by the pipe 7, so that the dovetail groove frame 8 itself and the hook Can be prevented beforehand.

[0055]

As described above, according to the present invention, the portion of the frame main body forming the notch, which is continuous in a forked shape, is drawn to provide a pipe support having an arcuate surface of the pipe support. Therefore, it is possible to prevent a large gap from being formed between the outer periphery of the pipe inserted into the U-shaped or U-shaped cross section of the frame main body and the dovetail groove frame arranged to intersect the pipe. By receiving the stress acting on the pipe due to the excessive driving of the wedge by the pipe supporting portion, it is possible to prevent the excessive stress from acting on the dovetail frame. Thereby, deformation and breakage of the pipe and the dovetail frame can be prevented.

Further, a pipe supporting piece which is bent in the direction between the side pieces and supports the inserted pipe outer periphery is integrally provided at a portion of the frame main body forming the cutout which is continuous in a forked shape. Accordingly, the bent pipe support piece receives stress acting on the pipe due to the driving of the wedge, and this stress can be prevented from directly acting on the dovetail frame, thereby preventing the dovetail frame from being deformed.

Further, a pair of symmetrically arranged portions near the forked portion of the frame body forming the cutout and bent in the direction between the side pieces to support the inserted pipe outer periphery with an arcuate surface. The pipe support pieces are integrally connected to each other, so that the pipe support pieces bent to face each other receive the stress acting on the pipe by driving the wedge, preventing this stress from directly acting on the dovetail frame Therefore, deformation of the dovetail frame can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a joint according to an embodiment of the present invention.

FIG. 2 is a perspective view of a greenhouse showing an installation position of a joint shown in FIG. 1;

FIG. 3 is an exploded perspective view showing an assembly structure of the joint shown in FIG. 1;

FIG. 4 is a longitudinal sectional view of a main part showing a structure for attaching a joint to a pipe in FIG. 1;

5 is a horizontal sectional view of the mounting structure shown in FIG.

FIG. 6 is a longitudinal sectional view of a main part showing another attachment structure of the joint in FIG. 1 to a pipe.

FIG. 7 is a horizontal sectional view of the mounting structure shown in FIG. 6;

FIG. 8 is a perspective view showing another example of the holding member according to the present invention.

FIG. 9 is a perspective view showing a state in which a pipe supporting piece of the holding member shown in FIG. 8 is bent.

FIG. 10 is a perspective view showing another example of the holding member according to the present invention.

FIG. 11 is a perspective view showing a state in which a pipe support piece of the holding bracket shown in FIG. 10 is bent.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clamping fixture 1A Frame main body 1a Bifurcated part 1b, 1c Side piece 2 Wedge 3 Notch 4 Hook 5 Wedge insertion hole 6 Pipe support 6a, 11, 13 Arc surface 7 Pipe 8 Dovetail frame 12, 14 Pipe support Piece

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) F16B 7/04 301 F16B 7/04 301J 301N F term (reference) 2B029 BB03 BC02 BC07 BE04 CA04 2E125 AA03 AA16 AA22 AB05 AB17 AC13 AC15 AC16 AG02 AG36 BB09 BB13 BB14 BB22 BB25 BB27 BB31 BB36 BD01 BE03 BE05 BE08 BF06 CA31 CA44 CA57 EA14 EA16 EA17 3J039 AA11 AB02 AB05 BB04 CA01 DA07

Claims (3)

[Claims] Claims: 1. A clamp comprising a clamp and a wedge.
A bifurcated frame main body having a U-shaped cross section or a U-shaped cross section, a notch formed in a bifurcated portion of the frame main body and side pieces continuous on both sides of this portion, An opening edge comprises a pair of hooks protruding toward the notch side and a wedge insertion hole formed at a portion of the frame main body opposite to each side piece, and a pipe is inserted between each side piece of the frame main body. Insert, insert a dovetail groove frame for sheet fixing in a direction perpendicular to the pipe into the notch, and drive the wedge into the wedge insertion hole, so that the pipe and the hook pinch the dovetail frame, A joint, wherein a pipe support portion having an arcuate surface for pipe support is formed by drawing a bifurcated portion of the frame main body forming the cutout. 2. A clamping device comprising a holding member and a wedge, wherein the holding member includes:
A bifurcated frame main body having a U-shaped cross section or a U-shaped cross section, a notch formed in a bifurcated portion of the frame main body and side pieces continuous on both sides of this portion, An opening edge comprises a pair of hooks protruding toward the notch side and a wedge insertion hole formed at a portion of the frame main body opposite to each side piece, and a pipe is inserted between each side piece of the frame main body. Insert, insert a dovetail groove frame for sheet fixing in a direction perpendicular to the pipe into the notch, and drive the wedge into the wedge insertion hole, so that the pipe and the hook pinch the dovetail frame, A pipe support piece that is bent in the direction between the respective side pieces and supports the inserted pipe outer periphery with an arcuate surface is integrally provided at a bifurcated portion of the frame body forming the cutout. Be done Joint according to claim 1, wherein the door. 3. A clamp comprising a clamp and a wedge.
A bifurcated frame main body having a U-shaped cross section or a U-shaped cross section, a notch formed in a bifurcated portion of the frame main body and side pieces continuous on both sides of this portion, An opening edge comprises a pair of hooks protruding toward the notch side and a wedge insertion hole formed at a portion of the frame main body opposite to each side piece, and a pipe is inserted between each side piece of the frame main body. Insert, insert a dovetail groove frame for sheet fixing in a direction perpendicular to the pipe into the notch, and drive the wedge into the wedge insertion hole, so that the pipe and the hook pinch the dovetail frame, A pair of pipe support pieces that are symmetrically arranged and bent in the direction between the respective side pieces near the bifurcated portion of the frame main body forming the notch, and support the inserted pipe outer circumference with an arc surface. But Joint according to claim 1, characterized by being provided continuously to the body.