JP2010268733A - Joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint suitable for joining a sheet-fixing frame with a pipe. <P>SOLUTION: The joint G for fixing the sheet-fixing frame 1, on the flat surface of which a pair of right and left upper-side dovetail grooves A, B are formed and at the center of the back surface of which a lower dovetail groove C is formed, to a pipe P, includes a pair of right and left gripping pieces 2, 3 for holding the pipe P, and a tightening tool R for tightening the gripping pieces 2, 3. The gripping pieces 2, 3 each include: a curved holding part 4 for tightly holding both sides of the pipe P; a hook 5 continuously provided to the upper end of the holding part 4; and a tightening piece 6 which is continuously provided to the lower end of the holding part 4 and to which the tightening tool R is attached. The hooks 5, 5 are hooked on the edges of the lower-side dovetail groove while the holding parts 4, 4 come in contact with both sides of the pipe P to tighten the tightening pieces 6, 6 by the tightening tool R in a direction to let them come close to each other so as to make the hooks 5, 5 get in both of the edges of the lower side dovetail groove C. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a joint suitable for joining a sheet fixing frame for fixing a sheet to a pipe in a greenhouse in which a transparent synthetic resin sheet is stretched.

  In general, as a greenhouse for growing animals and plants, a plurality of arch-shaped support pipes are erected on the ground, and a sheet fixing frame perpendicular to the pipe and other sheet fixing frames arranged along the pipe. Are connected to each other through a joint, and the sheet is fixed to these sheet fixing frames, so that the sheet is stretched over the entire roof surface and side surface.

  In this case, for example, a joint disclosed in the cited document 1 is known as a joint for joining the sheet fixing frame along the pipe.

  As shown in FIG. 8, the joint disclosed in the cited document 1 includes a sandwiching frame 20 and a wedge 30. The sandwiching frame 20 includes a pair of sandwiching pieces 21 and 22 facing each other, and each sandwiching piece 21 and 22. A support piece 23 that connects the upper ends, a wedge insertion hole 24 that is formed opposite to each holding piece 21, 22, and hooks 25, 25 that are provided alternately at the upper end of each holding piece 21, 22, The sandwiching pieces 21 and 22 are inserted into both sides of the pipe P, and the upper and lower portions of the pipe P are sandwiched between the wedge 30 and the support piece 23 driven into the wedge insertion hole 24 and are in contact with the support piece 23. The both sides of the sheet fixing frame 40 having the dovetails D having a narrow opening width are locked by the hooks 25 and 25.

  According to this joint, when the wedge 30 is driven into the wedge insertion hole 24, the upper and lower portions of the pipe P are clamped by the wedge 30 and the support piece 23, and both sides of the sheet fixing frame 40 are locked by the hooks 25 and 25. Thus, the sheet fixing frame 40 can be fixed to the pipe P.

JP 2002-330638 A

  However, in the joint disclosed in Patent Document 1, there is no particular problem in that the sheet fixing frame can be fixed to the pipe, but the following improvements are required.

  Recently, in order to provide greenhouses with functions such as heat insulation and ventilation, there are increasing specifications for extending a plurality of sheets having different functions and partially providing a net.

  For example, a permanent sheet that extends from the roof of the greenhouse to the upper part of the side and a roll-up sheet that is provided at the lower part of the side are fixed to one sheet fixing frame, or the sheet that is extended on the roof of the greenhouse and the wife of the greenhouse In some cases, the sheet spread on the surface is fixed to one sheet fixing frame.

  Along with this, there is an increasing demand for a sheet fixing frame in which two rows of dovetail grooves for fixing a sheet, in which more sheets can be fixed with one sheet fixing frame, are arranged in parallel.

  As described above, in the case where the conventional joint is attached to the sheet fixing frame for spreading the sheet on the surface of the greenhouse, the workability when driving the wedge is poor, and improvement has been demanded.

  In addition, when fixing the sheet fixing frame having the two rows of dovetail grooves to the pipe using the conventional joint, the sheet fixing frame is attached to the outer wall of one dovetail groove, or both sides of the sheet fixing frame are clamped by using a long wedge. In the former case, the other dovetail groove is not fixed and becomes unstable, and in the latter case, the sheet fixing frame is bent and difficult to fix.

  In order to improve the problem, a pipe is arranged at the center lower part of the sheet fixing frame having two rows of dovetail grooves, and screws are inserted from the center upper part of the sheet fixing frame toward the pipe to fix the sheet fixing frame to the pipe. I took the method, but there are the following problems.

  That is, rust is generated from the holes generated by inserting screws into the sheet fixing frame, and screws are inserted from above the sheet fixing frame, so it is difficult to accurately grasp the position where the screws are inserted. There is a problem that the screw slips off the top of the door.

  Accordingly, an object of the present invention is to provide a joint capable of easily and reliably fixing a sheet fixing frame having two rows of dovetail grooves to a pipe without using screws or the like.

  Means for solving the above-mentioned problems include holding a pipe in a joint for fixing a sheet fixing frame having a pair of left and right upper dovetails on a plane and a lower dovetail groove formed in the center of the back surface to the pipe. A pair of left and right clamping pieces, and a clamp that clamps the clamping pieces, a curved holding part that holds the both sides of the pipe by the clamping piece, and a hook that is connected to the upper end of the holding part, The fastening piece is connected to the lower end of the holding portion and is attached to the fastening tool, and the hook is held in the lower dovetail groove in a state where the holding portion is in contact with both sides of the pipe. It is characterized in that it is hooked on an edge and tightened in the direction in which the tightening pieces are brought close to each other with the tightening tool so that the hook is caught in the edges on both sides of the lower dovetail groove.

  In this case, the fastener includes a bolt and a nut, and each fastening piece is provided with an insertion hole. The bolt is inserted from one insertion hole and protrudes from the other insertion hole. It is preferable that the fastening pieces be brought close to each other by screwing the nut onto the part.

  According to the first aspect of the present invention, the lower dovetail groove located at the center of the sheet fixing frame having two rows of dovetail grooves is fixed, so that the stability is good. Thus, the sheet fixing frame having two rows of dovetail grooves can be easily and surely fixed to the pipe because it bites into the edges on both sides of the lower dovetail groove.

  According to the invention which concerns on Claim 2, it is possible to make each fastening piece near and close easily and cheaply, and it is possible to improve workability | operativity at the time of attaching or detaching a joint.

It is a longitudinal cross-sectional view of the joint in embodiment of this invention. It is a perspective view of a joint in an embodiment of the invention. It is a disassembled perspective view at the time of fixing a sheet | seat fixing frame to a pipe using the joint in embodiment of this invention. It is a cross-sectional view which shows the state which fixed the sheet | seat fixing frame to the pipe using the joint in embodiment of this invention. It is a perspective view which shows the state which fixed the sheet | seat fixing frame to the pipe using the joint in embodiment of this invention. It is a fragmentary perspective view which shows the greenhouse using the joint in embodiment of this invention. It is a fragmentary perspective view which shows the greenhouse using the joint in embodiment of this invention. It is a perspective view which shows the conventional joint.

  Hereinafter, the joint which shows embodiment of this invention is demonstrated in detail with reference to drawings.

  As shown in FIGS. 3 to 5, the joint showing the embodiment of the present invention is a sheet fixing device having a pair of left and right upper dovetails A and B on the plane and a lower dovetail C formed in the center of the back surface. The frame 1 is fixed to the pipe P.

  The joint G includes a pair of left and right holding pieces 2 and 3 that hold the pipe P, and a fastening tool R that fastens the holding pieces 2 and 3. The holding pieces 2 and 3 are connected to the pipe P. A curved holding portion 4 for holding both sides of the holding portion 4, a hook 5 connected to the upper end of the holding portion 4, and a clamp to which the fastening tool R is attached connected to the lower end of the holding portion 4. The hooks 5 and 5 are hooked on the edge of the lower dovetail C in a state where the holding parts 4 and 4 are in contact with both sides of the pipe P. The fastening pieces 6 and 6 are tightened in a direction to bring them closer to each other, and the hooks 5 and 5 are bitten into the edges (not shown) on both sides of the lower dovetail C.

  The joint G according to the present invention has the above-described configuration, so that the lower dovetail C located at the center of the sheet fixing frame 1 can be fixed, has good stability, and the fastening pieces 6 and 6 are brought close to each other. Since the hooks 5 and 5 are separated from each other and bite into the edges on both sides of the lower dovetail C, the sheet fixing frame 1 can be easily and reliably fixed to the pipe P.

  Hereinafter, the joint G according to the present invention will be described in detail.

  The joint G according to the present invention is used for fixing the sheet fixing frame 1 along the pipe P forming the framework of the greenhouse H as shown in FIGS.

  In other words, the greenhouse H stands up with a large number of arched vipes P on the ground, arranges the sheet fixing frame 1 along the pipe P, and temporarily sets a large number of sheet fixing frames 10 (FIG. 7) in the lateral direction. A sheet S made of synthetic resin or the like is fixed to each sheet support frame 1 via a locking wire F, and the sheet S is spread over the entire roof surface or side surface.

  As shown in FIGS. 3 to 7, the sheet fixing frame 1 arranged along the pipe P is coupled through a joint G according to the present invention.

  For example, as shown in FIGS. 3 to 5, the sheet fixing frame 1 includes a bottom portion 11 provided horizontally and side portions 12 and 13 that are curved from both sides of the bottom portion 11 and are inclined to stand inward. One frame 1a, a second frame 1b having the same shape as the first frame 1a and provided in parallel with the first frame 1a, and the first frame 1a and the second frame 1b are adjacent to each other. The side portions 13 and 12 are integrally connected to each other, and the top portion 14 is provided horizontally.

  The upper dovetails A and B are formed between the side portions 12 and 13 and the bottom portion 11 of the first frame 1a and the second frame 1b, respectively. The lower dovetail C is formed between the side portions 13 and 12 and the top portion 14 adjacent to the frame 1b.

  Next, the joint G according to the present invention includes a pair of left and right holding pieces 2 and 3 for holding the pipe P, and a fastening tool R for fastening the holding pieces 2 and 3.

  As shown in FIGS. 1 to 5, the holding pieces 2 and 3 include a curved holding portion 4 that holds both sides of the pipe P, and a hook 5 that is connected to the upper end of the holding portion 4. The fastening piece 6 includes an insertion hole 7 (FIG. 3) that is connected to the lower end of the holding portion 4 and attaches the fastening tool R.

  The hook 5 is formed such that the portions extending at both ends of the holding portion 4 are bent outwardly, whereby the edge of the lower dovetail C can be pressed in a balanced manner and the strength of the hook 5 can be obtained. However, the present invention is not limited to this, and the number of hooks 5 provided in the holding unit 4 and the method of providing the hooks 5 can be appropriately selected.

  The holding part 4 is provided between the hooks 5 and 5, and includes a claw 4 a that is located at the upper end part of the holding part 4 and curves along the pipe P.

  By having the claw 4a, when the claws 4a and 4a of the respective clamping pieces 2 and 3 are overlapped and hooked on the pipe P to temporarily fix the joint G, the claw 4a of one of the clamping pieces superimposed on the lower side The side holding pieces of the hooks 5 and 5 are sandwiched and the movement in the lateral direction is restricted, so that the holding pieces 2 and 3 are not displaced, and a good temporary fixing state can be maintained. Workability when tightening is improved.

  In addition, the prevention of the displacement of each of the sandwiching pieces 2 and 3 may be performed by a method other than the above. For example, an elastic body or the like that connects the upper ends of the holding portions 4 and 4 of the respective sandwiching pieces 2 and 3 is provided. The sandwiching pieces 2 and 3 may be integrally provided by the elastic body or the like.

  Further, the clamping pieces 2 and 3 are connected to a pair of vertical ribs (not shown) provided from the holding part 4 to the fastening piece 6 and the upper ends of the vertical ribs provided on the holding part 4. U-shaped ribs 2a and 3a each including a lateral rib (not shown) are provided.

  By providing the lateral ribs, the lateral ribs prevent slipping when the joint G is attached, and the mounting work is not limited to this, but the configuration of the lateral ribs can be appropriately selected. A groove may be provided.

  Moreover, although the holding pieces 2 and 3 are provided with strength by providing the vertical ribs, the present invention is not limited to this, and the shape and number of the vertical ribs can be appropriately selected.

  The shape and number of the ribs 2a and 3a can be selected as appropriate. If the material of the sandwiching pieces 2 and 3 does not require an anti-slip function or there is no problem in strength, the ribs 2a and 3a are not necessarily ribs. There is no need to provide 2a and 3a.

  Next, the fastener R is composed of a bolt R1 and a nut R2, and the bolt R1 is inserted through one insertion hole 7 of the insertion holes 7 and 7 provided in the fastening pieces 6 and 6, respectively. Then, the fastening pieces 6 and 6 are brought close to each other and fastened by projecting from the other insertion hole 7 and screwing the nut R2 into the projecting portion (not shown).

  By providing the above configuration, the hooks 5 and 5 are hooked on the edge of the lower dovetail C in a state where the holding portions 4 and 4 are in contact with both sides of the pipe P. It is easy to securely fix the sheet fixing frame 1 to the pipe P by tightening the fastening pieces 6 and 6 so that the hooks 5 and 5 are bitten into the edges on both sides of the lower dovetail C. It becomes possible.

  That is, when the holding pieces 2 and 3 are brought close to each other, the holding portions 4 and 4 are rotated along the outer periphery of the pipe P, and the hooks 5 and 5 are separated from each other. It can be eaten into the edge of the ant groove C.

  The configuration of the fastening tool R makes it possible to make the fastening pieces 6 and 6 closer and cheaper and can improve the workability when attaching and detaching the joint G. However, the fastening pieces 6 and 6 can be appropriately selected as long as the fastening pieces 6 and 6 can be maintained so as to be able to be viewed, and for example, clips can be used.

  Although preferred embodiments of the present invention have been described in detail above, it should be understood that modifications, variations and changes may be made without departing from the scope of the claims.

A, B Upper dovetail groove C Lower dovetail groove G Joint P Pipe R Fastening tool 1 Sheet fixing frame 2, 3 Holding piece 4 Holding part 5 Hook 6 Fastening piece 7 Insertion hole

Claims (2)

A joint (G) for fixing a sheet fixing frame (1) having a pair of left and right upper dovetail grooves (A) and (B) on a plane and a lower dovetail groove (C) formed in the center of the back to a pipe (P) ), A pair of left and right clamping pieces (2) and (3) for holding the pipe (P) and a fastening tool (R) for fastening the clamping pieces (2) and (3). A curved holding portion (4) in which the pieces (2) and (3) hold both sides of the pipe (P), a hook (5) provided continuously to the upper end of the holding portion (4), and the holding And a fastening piece (6) to which the fastening tool (R) is attached continuously to the lower end of the holding part (4), and the holding parts (4) and (4) are connected to the pipe (P). The hooks (5), (5) are hooked on the edge of the lower dovetail groove (C) in a state of being in contact with both sides, and the fastening pieces (6), (6 ) The hook (5) is tightened in a direction to approach each other, a joint, characterized in that to bite into both sides of the edge (5) of the lower dovetail (C).
  The fastening tool (R) is composed of a bolt (R1) and a nut (R2). The fastening pieces (6) and (6) are provided with insertion holes (7) and (7), respectively. The bolt (R1) is inserted through the hole (7) and protruded from the other insertion hole (7), and the nut (R2) is screwed into the protruded portion, whereby the fastening piece (6) The joint according to claim 1, wherein (6) is brought close to each other.

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