JP2009079620A - Joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint which can joint columns having dovetails together accurately and smoothly. <P>SOLUTION: The joint consists of a pair of a first and a second pinching members 1-2 facing each other and a fastening bolt 3 fastening the pinching members 1-2, and joints two columns which are equipped with dovetails M-N in the longitudinal direction and intersect perpendicularly. Furthermore, the first pinching member 1 is constructed by a pinching plate 1A of barrel section, a hook 1B formed in an end section of the pinching plate 1A, and a bolt inserting hole 1C formed in the pinching plate 1A, moreover the second pinching member 2 is constructed by a pinching plate 2A of the barrel section, a supporting strip 2B formed in bend in an end section of the pinching plate 2A, a hook 2C formed in an end section of the supporting strip 2B, and a bolt inserting hole 2D formed in the pinching plate 2A. Additionally, the hooks 1B-2C of the pinching members 1-2 are hooked to a dovetail M edge of one side first column 5, respectively, and the other side second column 4 is pinched by the pinching plates 1A-2A of the pinching members 1-2, and then clamping bolts 3 are screwed into the bolt inserting holes 1C-2D, respectively. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a strut coupling joint suitable for joining a vertical strut and a horizontal strut assembled as a framework to a wife's face or the like of a greenhouse in a direction orthogonal to each other.

  Generally, a greenhouse that is used as a greenhouse for plant cultivation stands up a number of arched pipes on the ground, and a sheet fixing device is installed between the pipes in the lateral direction. A transparent sheet made of synthetic resin is fixed through a sheet fixing device.

    Similarly, a frame composed of a plurality of vertical struts coupled to the arch pipe via brackets and horizontal struts coupled via joints between the vertical struts is attached to the end face side of the greenhouse.

  This framework is used as a door frame or as a sheet fixing device for spreading a synthetic resin transparent sheet.

  As the framework for fixing the sheet, hollow square pillars with dovetails in the longitudinal direction are used, and the sheet is fixed in the dovetails via other locking lines, and the sheet is attached to the entire wife surface. It is being extended.

  A corner joint is used to connect two orthogonal struts having the above-mentioned dovetail.

  Although several things are developed as this corner joint, the connection metal fitting shown in patent documents 1 is adopted, for example.

This connection metal fitting consists of a pair of 1st, 2nd clamping members which oppose each other, and a clamping bolt which fastens each clamping member.

  Then, when connecting two orthogonal struts each having a dovetail in the longitudinal direction, the L-shaped end of the one clamping member is hooked on the outer periphery of the vertical strut, and the L-shaped end of the other clamping unit is also A stopper provided near the end of the vertical strut is caught in the dovetail groove, and the other horizontal strut is clamped by the body of each clamping member and tightened with a tightening bolt.

And this clamping bolt is inserted in the bolt insertion hole provided in each clamping member, and the edge part of the said clamping bolt is fixed with the nut.
Registered design No. 957282 (refer to the description of the design and drawings).

  The connecting metal fitting shown in Patent Document 1 is not particularly defective in terms of function, but it is desired to improve the following problems.

  1stly, since one clamping member has made the stop piece provided in the edge part bite into the dovetail groove of a vertical support | pillar, there exists a malfunction which cannot fit a sheet | seat in the dovetail groove of the part which the stop piece bite into. .

  Second, when the horizontal strut is clamped by a pair of clamping members, it is not always possible to clamp the same position of the horizontal strut, and it is difficult to know from the outside where the end of the horizontal strut is in the clamped state. As a result, if the tightening bolt is fastened by relying on the feeling in a state where the positioning is not accurately performed, the bolt interferes with the horizontal strut. Therefore, since the positioning is repeated several times so that the tightening bolt does not interfere with the support, the bolt mounting work may be significantly impaired.

  Third, when two clamping members are installed, there are cases where the horizontal struts and the clamping members are aligned while temporarily tightening by inserting a few tightening bolts. In addition, there is a problem that cannot be performed smoothly.

  Fourth, since the tightening bolt is fastened with a nut, an operation for holding the nut during the tightening operation is necessary, and the operability is poor. Moreover, since this nut is independent of the clamping member, it may be lost, and it is necessary to separate the processing from the clamping member, which is disadvantageous in terms of workability, assembly performance, and economic efficiency.

  Therefore, the object of the present invention is that the function of the dovetail is not impaired even when used for fastening the support provided with the dovetail, and the tightening work can be performed without the interference of the tightening bolt with the support. It is possible to provide a joint that can be temporarily fixed, can be easily and smoothly connected to each other, can be easily fixed with a tightening bolt, and has excellent workability, assembly, and economy.

  In order to achieve the above object, the means of the present invention comprises a pair of first and second clamping members facing each other and a clamping bolt for fastening each clamping member, each having a dovetail groove in the longitudinal direction. Of the two orthogonal pillars, the two second pillars are sandwiched by the body of the sandwiching member while hooking each end of the sandwiching member to the first pillar, and then tightened with a tightening bolt. In the joint for connecting the support columns in a direction orthogonal to each other, the first sandwiching member is composed of a sandwiching plate of the body portion, a hook formed at the end of the sandwiching plate, and a bolt insertion hole formed in the sandwiching plate. The second clamping member comprises a body clamping plate, a support piece formed by bending the end of the clamping plate, a hook formed at the end of the support piece, and a bolt insertion hole formed in the clamping plate. , The hooks of each clamping member Hooking the edge of the groove, characterized in that for screwing the fastening bolts and the respective bolt insertion holes to sandwich the other of the second support column with clamping plates of each clamping member.

  In this case, each clamping plate in the first and second clamping members is formed in a U-shaped or U-shaped cross section, and positioning for regulating the mounting position of the second support on the inner wall of the clamping plate in the second clamping member It is preferable to prevent the end of the column and the fastening bolt from interfering by projecting the member.

  Similarly, it is preferable to form a guide groove along the short direction near the base end of the support piece at the end of the holding plate in the second holding member.

  Similarly, it is preferable that a nut facing the bolt insertion hole is integrally formed on the inner wall of the clamping plate in the second clamping member.

  Similarly, two perpendicular pillars are a frame for a greenhouse consisting of vertical pillars and transverse pillars with longitudinal dovetails in the longitudinal direction, and transparent synthetic resin sheets are fixed to each dovetail groove via locking filaments. Can be

A) According to the invention of each claim, the following specific effects can be achieved.

    The pair of clamping members are provided with hooks at the end portions, and these hooks are hooked on the edge of the dovetail groove in the first support column, so that the mounting operation of each clamping member is easy and can be performed smoothly.

In addition, since the hook is locked to the edge of the dovetail, the function of the dovetail itself is not impaired. Therefore, when this support is a sheet fixing support for a greenhouse, a sheet can be fitted into the dovetail.

B) According to the invention of claim 2, since the positioning member for regulating the position of the end portion of the second column is provided, for example, when the horizontal column is attached as the second column, the end portion of the horizontal column is tightened. There is no interference with the bolts, and the tightening bolts can be tightened smoothly and accurately, and workability can be improved.

C) According to the invention of claim 3, since the guide mechanism including the guide groove is formed in one of the holding members, when the second holding member is attached to the first support column, the corner of the first support column is Once guided into the guide groove, the corner of the first strut can be guided to the back of the second clamping member while forcibly getting over the guide groove, and the mounting operation of the second clamping member can be performed. Easy and smooth.

Moreover, when the corner of the first strut is fitted in the back of the second clamping member, the dead point is exceeded when the guide groove is overcome, so self-recovery cannot be performed, and temporary fixing before final tightening of the tightening bolt is possible. Thus, the final tightening operation of the tightening bolt can be performed smoothly and surely, and the column connecting operation can be remarkably improved.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 to FIG. 5 show an embodiment of the present invention, and in particular, a framework on the wife face side of a greenhouse and a fixing structure of a sheet.

  As shown in FIG. 5, the greenhouse P has a large number of arch pipes R standing on the ground, and a dovetail frame called “Binipet” (registered trademark) is installed perpendicularly to the arch pipes R, and the dovetail frame is elastic. A transparent sheet is stretched through a simple locking line.

  Furthermore, on the end face side of the greenhouse P, a plurality of vertical struts 5 are attached to the arch pipe R with brackets facing the ground, and one or both ends of the horizontal struts 4 are coupled to the vertical struts 5. The frame is composed of the vertical and horizontal columns 4 and 5.

  The vertical and horizontal columns 4 and 5 are also used as the frame of the door Q. Also, a dovetail groove is formed along the longitudinal direction, and a transparent sheet is fixed to the dovetail groove via a locking line. It is normal for the sheet side to be extended.

  The present invention can be used as a joint for connecting the orthogonal corner portions of two struts extending in the vertical and horizontal directions. In particular, the vertical strut 5 having the dovetail of the greenhouse P and the horizontal strut are combined. It is suitable for use.

As can be seen from FIGS. 1, 2 and 3, the joint A of the present invention has a pair of first and second clamping members 1 and 2 facing each other and a fastening bolt 3 for fastening the clamping members 1 and 2 together. Among the two orthogonal struts each provided with dovetail grooves M and N in the longitudinal direction, the sandwiching member 1 while hooking each end of the sandwiching members 1 and 2 to one first longitudinal strut 5 The other second horizontal strut 4 is sandwiched between the two barrels and tightened with the tightening bolts 3 so that the two struts 4 and 5 are coupled in a direction orthogonal to each other.

  And the 1st clamping member 1 is comprised by 1 A of clamping plates of the trunk | drum, the hook 1B formed in the edge part of 1 A of clamping plates, and the bolt insertion hole 1C formed in 1 A of clamping plates.

  The second sandwiching member 1 is formed on the sandwiching plate 2A of the body, the support piece 2B formed by bending the end of the sandwiching plate 2A, the hook 2C formed on the end of the support piece 2B, and the sandwiching plate 2A. The bolt insertion hole 2D is used.

  In the present invention, the hooks 1B and 2C of the holding members 1 and 2 are respectively hooked on the edges of the dovetail groove M of the one vertical support column 5, and the other horizontal support column is held by the holding plates 1A and 2A of the holding members 1 and 2 respectively. 4 and the bolts 3 are screwed into the bolt insertion holes 1C and 2D.

  As can be seen from FIGS. 2 and 3, the sandwiching plates 1 </ b> A and 2 </ b> A in the first and second sandwiching members 1 and 2 are formed in a U-shaped cross section, and the inner wall of the sandwiching plate 2 </ b> A in the second sandwiching member 2. A positioning member 6 made of a semicircular protrusion for restricting the mounting position of the horizontal strut 4 is protruded to prevent the end of the horizontal strut 4 and the tightening bolt 3 from interfering with each other. That is, the positioning member 6 is formed on the outer end side (left side in FIG. 2) which is a position away from the bolt insertion hole 2D for inserting the tightening bolt 3. The mounting position is regulated by abutting, and the interference with the fastening bolt 3 is prevented, and the bolt insertion hole 2D is also protected.

  The clamping plates 1A and 2A of the clamping members 1 and 2 may be horizontal or U-shaped in cross section.

  A guide groove 2E composed of a V-shaped groove is formed near the base end of the support piece 2B at the end of the holding plate 2B in the second holding member 2. The guide groove 2E is formed by a pair of gentle inclined surfaces.

  Similarly, a plurality of holes 7 and 9 are formed in the sandwiching plate 2A of the second sandwiching member 2, and bolts 8 and pins inserted through these holes are screwed into the body portions of the horizontal strut 4 and the vertical strut 5. Thus, the second clamping member 2 can be more firmly coupled to each of the columns 4 and 5.

  A nut 2G facing the bolt insertion hole 2C is integrally formed on the inner wall of the clamping plate 2B in the second clamping member 2.

  Also, the holding plate 2A of the second holding member 2 is partially bent to form another support piece 2F that also serves as a reinforcement facing the support piece 2B.

  The inlet of the bolt insertion hole 1C of the first clamping member 1 is recessed inward, and the flange of the fastening bolt 3 is inserted into this recess to prevent the flange from jumping out and interfering with the sheet S. Yes.

  The horizontal strut 4 is formed in a structure similar to that shown in Patent Document 1, which is composed of a substantially quadrangular columnar cylinder with a bottom wall 4C, left and right side walls 4A and 4B, and an upper wall 4D. A dovetail groove N defined by the upper wall 4D and a pair of claw-like hooks 4F extending from the upper wall 4D is formed.

  Similarly, the vertical strut 5 is formed of a substantially quadrangular prismatic cylinder with a bottom wall 5C, left and right side walls 5A and 5B, and an upper wall 5D, and a pair of claw-like hooks extending from the upper wall 5D and the upper wall 5D. A dovetail M is defined by 5F.

  Each of the first and second holding members 1 and 2 is formed by bending a single metal plate, and is fastened while bending both ends of the metal plate to form thick reinforcing portions 4D and 5D.

  A transparent sheet S is fixed in the dovetail grooves M and N of the sandwiching members 1 and 2 via the locking wire 11.

  Next, the procedure for connecting the vertical and horizontal columns 4 and 5 using the joint A of the present invention will be described.

  The hooks 1B, 2C of the pair of sandwiching members 1, 2 are hooked on the hooks 5F, 5F, which are the edges of the dovetail M of the vertical column 5, and the respective clamping plates 1A, A pair of clamping members 1 and 2 are fastened by attaching 2A to the body of the horizontal support 4 and holding it, and then inserting the fastening bolt 3 into the bolt insertion holes 1C and 2D and screwing them.

  However, in the above process, first, the second holding member 2 is temporarily fixed to the vertical support 5, and then the first holding member 1 is aligned with the horizontal support 4. When the second holding member 2 is attached to the outer periphery of the vertical support 5, as shown in FIG. 4, the corners P, Q, R of the vertical support 5 are respectively connected to the inner corner grooves T, U of the second holding member 2. , V. Then, in this state, the second clamping member 2 is temporarily fixed to the vertical column 5, then the first clamping member 1 is directed to the horizontal column 4, and further tightened with the fastening bolt 3.

  In the mounting procedure at the temporary fixing position, the corner P of the first vertical column 5 is once guided into the guide groove 2E against the spring force of the second clamping member 2, and then forcibly guided to the guide groove 2E. However, the corner P of the first support column is guided to the corner groove T at the back of the second holding member and fitted.

  For this reason, the second clamping member 2 can be attached with an operating force sufficient to get over the guide groove 2E, and the mounting operation of the second clamping member 2 is easy and smooth.

  In addition, when the corner P of the first vertical column 5 is fitted in the back of the second clamping member, the dead point is exceeded when the vehicle passes over the guide groove 2E. The front temporary fixing becomes possible, the final tightening operation of the tightening bolt can be performed smoothly and sequentially, and the column connecting operation is remarkably improved.

  As described above, the temporary fixing work process can be performed to ensure the positioning of each member, and any member can be prevented from coming off or falling off during the process, speeding up work and increasing safety. I can plan.

  In addition, it can be used even if it winds around the outer periphery of a pair of clamping members 1 and 2 using a wire, an elastic ring, etc. instead of the clamping bolt 3, and fastens.

It is a partially cutaway perspective view of the state which attached the joint concerning one embodiment of the present invention to the support. FIG. 2 is an exploded perspective view of FIG. 1. It is an AA line crossing top view of FIG. It is an expansion cross-section plane which shows the attachment process of a 2nd clamping member. It is a partially cutaway perspective view of a greenhouse using the joint of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st clamping member 2 2nd clamping member 3 Fastening bolt 3
M, N Dovetail M, N
4, 5 Support 1A Holding plate 1B Hook 1C Bolt insertion hole 2A Holding plate 2A
2B Support piece 2C Hook 2D Insertion hole 2E Guide groove 6 Positioning member

Claims (5)

It consists of a pair of first and second clamping members 1 and 2 facing each other, and a clamping bolt 3 for fastening each clamping member 1 and 2, and two orthogonally shaped dovetails M and N respectively provided in the longitudinal direction. Among the struts, the other second strut 4 is sandwiched between the body portions of the sandwiching members 1 and 2 while the end portions of the sandwiching members 1 and 2 are hooked on one first strut 5 with the fastening bolt 3. In the joint that joins the two support columns 4 and 5 in the direction orthogonal to each other by tightening, the first clamping member 1 is a clamping plate 1A of the trunk portion, and a hook 1B formed at the end of the clamping plate 1A, A bolt insertion hole 1C formed in the sandwiching plate 1A, and a second sandwiching member 2 formed by bending the sandwiching plate 2A of the body, the end of the sandwiching plate 2A, and a support piece 2B. Hook 2C formed at the end and bolt insertion hole formed in the clamping plate 2A D, hooks 1B and 2C of the holding members 1 and 2 are respectively hooked on the edges of the dovetail grooves M of the one supporting column 5, and the other supporting column 4 is connected by the holding plates 1A and 2A of the holding members 1 and 2 respectively. A joint characterized in that the clamping bolt 3 is screwed and screwed into the bolt insertion holes 1C and 2D. The sandwiching plates 1A, 2A in the first and second sandwiching members 1, 2 are formed in a U-shaped or U-shaped cross section, and the second support column 4 is formed on the inner wall of the sandwiching plate 2A in the second sandwiching member 2. The joint according to claim 1, wherein a positioning member (6) for regulating the mounting position is protruded to prevent the end of the second support column (4) and the fastening bolt (3) from interfering with each other. The joint according to claim 1 or 2, wherein a guide groove 2E is formed at the end of the holding plate 2B in the second holding member 2 so as to be close to the base end of the support piece 2B and along the short direction. The joint according to claim 1, 2, or 3, wherein a nut facing the bolt insertion hole 2C is integrally formed on the inner wall of the clamping plate 2B in the second clamping member 2. Two orthogonal first and second support columns 5 and 4 are frames for a greenhouse composed of vertical columns and horizontal columns having dovetails M and N in the longitudinal direction. The joint according to claim 1, 2, 3, or 4 to which a transparent synthetic resin sheet is fixed via a streak.

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