JP2005226798A - Structure of connection member and structure of connection part of pipe using the connection member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure of a connection member enabling the rapid and easy connecting operation for two pipes by using connection elements and capable of providing high rigidity between through holes in the pipes by reinforcing the longitudinal inter-through holes in the pipes with the connection base material of the connection elements. <P>SOLUTION: The pair of connection elements comprise female screw hole members for bolt threading at both ends of the connection base material forming the base part of the connection elements, and installed in the pipe parallel with each other in such a state that the positions of the axes of the female screw holes at both ends match each other in the longitudinal direction. In that state, clearances are provided between the outer diameters of the connection elements in the state of being arranged parallel with each other and the inner diameters of the pipes, and also the axes of the female screw holes for bolt threading having the pair of connection elements at both ends match the plurality of through holes longitudinally spaced in the pipes. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a structure of a connecting member and a structure of a connecting portion of a pipe using the connecting member.

As a structure of a connecting member that has been widely known in the past, for example, a base portion of a pipe-like column for a TV antenna is connected to a base that is fixed to a building (a building, a building such as a fence). A configuration is disclosed (for example, see Patent Document 1).
In FIG. 13 showing a conventional example, A is a base fixed to a building (construction such as a building or a fence), and 13 and 13 are base portions of a pipe-shaped take-out arm B for supporting an antenna. The top ends of these two upper and lower pipes B are connected to each other by separate pipes (not shown).
In the base A, 3 indicates a mounting plate for mounting the base A to the building. Reference numeral 4 denotes an attachment hole provided in the attachment plate 3, and the back surface 1 of the attachment plate 3 is fixed to the building through the attachment hole 4 by a known means (for example, a screw). As shown well in FIG. 13, reference numerals 2 and 2 denote two pairs of take-out plates formed by bending up from the mounting plate 3. Reference numeral 7 denotes the presence of a through hole (under the bolt head 40a) provided in the carry-out plates 2 and 2. Reference numeral 8 denotes a long hole provided in the carry-out plate 2, and the long hole is formed in an arc shape with the through hole 7 as a center. 40 'and 40' are long bolts penetrating the take-out plates 2 and 2 and the pipe base 13, respectively. The two take-out plates 2 and 2 are tightened by the bolt head 40a and the nut 40b. In addition, the base portion 13 of the pipe B between them is provided so as to be tightened together.
In addition, the base portion 13 of the pipe B is provided with a through hole (not shown) for allowing the bolt 40 'to pass therethrough.

The base A and the pipe B can be connected in a fixed manner by tightening the upper and lower bolts 40 'shown in FIG. 13. If the inclination of the two pipes B and B is to be adjusted, the upper and lower By loosening the tightening of the upper bolt 40 'out of the bolts and moving the loosened upper bolt in the arc-shaped elongated holes 8, 8 using the lower bolt as a fulcrum, two pipes B , B can be adjusted. As a result, the base A and the pipe B are tiltably coupled.
Japanese Utility Model Publication No. 63-20172 (column 2, line 5 to column 4, line 20, FIGS. 4, 5, and 7)

In this conventional connecting member structure, the two pipes B are hollow,
When the bolts 40 ′ and 40 ′ are strongly tightened and the two pairs of the carry-out plates 2 and 2 and the pipe B in the base A are fastened together, the carry-out plates 2 and 2 are tightened in the direction of crushing the pipe B and the pipe B is deformed.
Deformation of the pipe B has a problem that the rigidity of the pipe B is lowered, and furthermore, the pipe may be corroded after aging.
Further, the deformation of the pipe B has a problem that the clamping force of the pipe B through the take-out plate 2 is reduced, and it is difficult to maintain the inclination of the pipe B.

Therefore, in order to solve this problem, the thickness of the pipe B is increased so that the pipe B is not deformed, or the pair of take-out plates 2 and 2 in the base A are crushed in the direction of crushing the pipe B. It is conceivable to reinforce with reinforcing materials 2a, 2b and 2c so as to prevent tightening.
However, when the thickness of the pipe B is increased, the weight of the pipe B is increased, which causes a processing problem that makes it difficult to process the pipe B.
Further, if the two pairs of carry-out plates 2 and 2 in the base A are reinforced with the reinforcing members 2a, 2b and 2c, there is a problem that the manufacturing cost of the base A is increased.

The object of the present application is to provide reinforcement between the through holes in the pipe in the longitudinal direction with a connecting base material in the connecting element, and to provide high rigidity between the through holes in the pipe even when the thickness of the pipe is thin. It is an object of the present invention to provide a structure of a connecting member that can be used.
Another purpose is to maintain the original shape of the pipe without causing the pipe to be crushed in the radial direction by a separate plate as in the conventional product, even when the pipe is interposed between bolts and tightened with a bolt. It is an object of the present invention to provide a structure of a connecting member that can be used.
Another object of the present invention is to provide a structure of a connecting member that is highly efficient in bolting a female screw hole in a connecting element to a pipe.
Another object of the present invention is to provide a structure of a connecting member in which a connecting operation of two pipes using a connecting element can be performed quickly, easily and efficiently.
Other objects and advantages will be readily apparent from the drawings and the following description associated therewith.

The structure of the connecting member in the present invention includes a plurality of separate connecting elements each formed in a separate body, and each of the connecting elements has a structure in which bolts are respectively attached to both ends of the connecting base material serving as a base of the connecting element. A female screw hole member having a combined female screw hole;
The plural pairs of connecting elements can be placed in the pipe in parallel so that the axial center positions of the female screw holes for screwing the bolts provided at both ends of each connecting base material correspond to each other in the longitudinal direction. In addition, in the state where the parallel connection element is placed in the pipe, there is a gap between the outer diameter of the parallel connection element and the inner diameter of the pipe, and there is a gap in the longitudinal direction of the pipe. The plurality of through holes provided at a distance from each other are in a state in which the shaft cores of the female screw holes for bolting each having a pair of connecting elements at both ends thereof correspond to each other. The corresponding bolts are inserted into the female screw holes for screwing the bolts provided at both ends of the connecting element from the outside of the pipe through the through holes, respectively, and are respectively screwed together. Tighten It is that to be able to wear.

Preferably, the connecting member is used when two pipes each having a plurality of through holes are connected in a state in which their axial centers coincide with each other, and the connecting members are a plurality of separately formed members. Comprises a pair of connecting elements, and each configuration of the connecting elements includes a female screw hole member having a female screw hole for screwing at both ends of the connecting base material serving as a base of the connecting element,
The plurality of pairs of connecting elements are arranged in parallel so that the axial center positions of the female screw holes for screwing provided on both ends of each connecting base material correspond to each other in the longitudinal direction, and the connecting elements in the parallel state. The shape of each outer peripheral surface is formed into a surface shape corresponding to the inner surface of the pipe, and the connecting elements in the parallel state are positioned in the two pipes whose axial centers coincide with each other. The state of positioning is a state in which a gap is formed between the outer diameter of the connecting element in the parallel state and the inner diameters of the two pipes, and one of the connecting elements in the parallel state is used for screwing in the bolt. The female screw hole is located in one of the two pipes, and the other female screw hole for screwing is located in the other pipe, and a plurality of each provided in the two pipes. Parallel to the through hole The axial centers of the female screw holes for screwing the connecting elements in the connected state are positioned so as to correspond to each other, and the outer peripheral surfaces of the connecting elements in the parallel state, and the two With the inner surface of the pipe positioned so as to be in intimate contact, the bolt is inserted through the through-hole from the outside of the pipe to the female screw hole for screwing the connecting element and screwed into the pipe and the pipe. A plurality of pipes may be connected to each other through the connecting member by allowing a plurality of the connecting elements to be fastened and fixed and fastening the bolt.

    Preferably, a pipe base portion is interposed between the pair of two take-out plates in the base fixed to the building, and the pipe base portion has two transparent parts on both sides spaced in the longitudinal direction. In addition to providing a hole, the two pairs of take-out plates are also provided with through holes at overlapping positions corresponding to the two through-holes provided in the base portion of the pipe, It is a connecting member used when connecting a pipe with a bolt, and the connecting member is composed of two pairs of connecting elements formed separately from each other. The connecting base member of the connecting element is provided with female screw hole members having female screw holes for screwing at both ends thereof, and the two pairs of connecting elements are provided at both ends of the connecting base members, respectively. Shafts of female screw holes for threaded bolts Can be placed in parallel in a state corresponding to each other and placed in the base portion of the pipe, and in the state where the connecting element in the parallel state is placed in the pipe, the outer diameter of the connecting element in the parallel state and the pipe For the bolt screwing provided in both ends of the two pairs of connecting elements with respect to the respective through holes provided in the longitudinal direction of the pipe base portion with a gap between them and the inner diameter of the pipe base portion. The axial cores of the female screw holes are in a state of correspondingly corresponding to each other. From both sides of the two pairs of takeout plates, two through holes provided in each takeout plate and the pipe base portion When two bolts are inserted through the corresponding through-holes and screwed into the female screw holes for screwing provided at both ends of the corresponding two pairs of connecting elements, respectively, Integrates the base at a position spaced apart in the longitudinal direction As long as you can.

In the present invention, a plurality of pairs of connecting elements 21 can be placed in the pipe B, and in the state where the connecting elements 21 are placed in the pipe B, the plurality of connecting elements 21 are arranged with respect to the plurality of through holes provided in the longitudinal direction of the pipe B. Each of the pair of connecting elements 21 is provided at both ends of the connecting base member 25 of the connecting element, and the shaft cores of the female screw holes 34 for screwing are in correspondence with each other. The corresponding bolts 40 are respectively inserted into the female screw holes 34 for screwing the bolts provided at both ends through the through holes from the outside of the pipe and screwed together, so that the pipe B and the plurality of pipes are connected to each of the pair of connecting elements 21. Can be reinforced by the connecting base material 25 in the connecting element 21 between the through holes in the longitudinal direction of the pipe B.
Therefore, even when the thickness of the pipe is thin, there is an effect that high rigidity can be provided between the through holes in the pipe B.
Further, even if the pipe B is separated into two in the longitudinal direction of the pipe B, there is an effect that the separated pipes B and B can be reinforced by the connecting base material 25 and integrated.

Furthermore, since the present invention is configured as described above,
When attaching separate plate materials 2 and 2 each having through holes 7 and 8 on both sides of the pipe B, each plate material 2, each side portion of the pipe B, and each connecting element 21 are tightened with bolts 40, respectively. These three can be integrated.
In this way, even when the pipe B is interposed between the separate plate members 2 and 2 and tightened with the bolts 40, the force of crushing the pipe B in the radial direction by the separate plate members 2 and 2 is not generated unlike the conventional product. .
Therefore, the original shape of the pipe B can be maintained, and there is an effect that the life of the pipe B can be used for a long time.

Further, the present invention provides a through-hole 17 located farther away from the front end 12 of the pipe, out of the two through-holes 17 and 18 provided at intervals in the longitudinal direction of the base portion 13 of the pipe B. On the other hand, when the connecting element 21 is inserted and the female screw hole 34 provided in the connecting element 21 is applied, the connecting element 21 is long in the longitudinal direction of the pipe B. When inserted into the base portion 13, there is a feature that it is easy to make the female screw hole 34 corresponding to the through hole 17 correspond to the through hole 17 located far away from the tip portion 12 of the pipe.
This has an operational effect of increasing the efficiency of the operation of tightening the female screw hole 34 in the connecting element 21 with the bolt 40 with respect to the pipe B.

Furthermore, in the present invention, when two pipes B1 and B2 each having a plurality of through holes 17 at their ends are connected in a state where their axial centers coincide with each other, one of the two pipes B1 and B2 is connected. When one female screw hole 34 in a plurality of pairs of connecting elements 21 in parallel is temporarily tightened with a bolt 40 with respect to the through holes 17 and 17 provided in the pipe B1, the other female screw hole 34 side becomes free, The outer diameter dimension W1 of the connecting element 21 in the free parallel state can be made smaller than the inner diameter dimension W2 of the other pipe B2.
Therefore, the other female screw hole 34 can be easily inserted into the other pipe B2.
Furthermore, in the state inserted in the other pipe B2, the other female screw hole 34 provided in the connecting element 21 corresponds to the through hole 19 provided in the other pipe B2.
Therefore, there is an operational effect that the connecting work of the pipes B1 and B2 can be performed quickly, easily and efficiently.

Hereinafter, drawings showing embodiments of the present invention will be described. 1 to 6, A indicates a base fixed to a building D (for example, an arbitrary structure such as a building or a fence), and B indicates a pipe for supporting an antenna. C represents a connecting member used to connect the base A and the pipe B using a bolt 40.
In the base A, reference numeral 3 denotes a mounting plate for attaching the base A to the building D (shown by a dashed line in FIG. 1). A plurality of mounting holes 4 are provided in the mounting plate 3, and the base A is fixed to the building D through the mounting holes 4 by a known means (for example, a screw).
Reference numeral 2 denotes a pair of two take-out plates formed by bending from the mounting plate 3 in a bent shape. Reference numeral 7 denotes a through hole provided in each of the two pairs of carry-out plates 2 and 2. Reference numeral 8 denotes a long hole provided in each of the two pairs of carry-out plates 2, 2. It is formed in a circular arc shape with the center at the center.
In the above description, the take-out plate 2 is formed by bending the mounting plate 3 and the integral material. However, the take-out plate 2 may be formed of a separate material and fixed by any means.

In the pipe B, 11 indicates a main part of the pipe, and 12 indicates a tip part to which the antenna is attached.
Reference numeral 13 denotes a base portion which is connected between the pair of carry-out plates 2 and 2 in the base A and is connected to the base A. As shown well in FIGS. 2, 4, and 6, the base portion 13 has two through holes 17, 17 and two through holes 18, 18 on both sides of the longitudinally spaced position L 1. It is provided. The through holes 17 and 17 are provided at positions where they overlap with the through holes 7 and 7 provided in the carry-out plates 2 and 2,
The through-holes 18 and 18 are provided at positions where they overlap corresponding to the through-holes 8 and 8 provided in the carry-out plates 2 and 2.

The connecting member C is composed of a pair of connecting elements 21 formed separately from each other.
As shown well in FIG. 5, in the connecting element 21, reference numeral 25 denotes a connecting base material serving as a base.
Female threaded hole members 31 having female threaded holes 34 for screwing bolts are provided at both ends of the connecting base material 25, respectively.
As shown in FIG. 6, the female screw hole member 31 is configured by providing female screw holes 34 in a boss member 31 formed of an integral material at both ends of a connection base 25. The size of the boss member (female screw hole member) 31 is such that the outer diameter W1 of the connecting element 21 in a parallel state in which two pairs of connecting elements 21 are arranged in parallel as shown in FIG. The inner diameter dimension W2 of the boss member 31 is smaller than the inner diameter dimension W2, and the gap W4 is formed between the pipe inner wall 15 and the outer surface 32 of the boss member 31.
The shape of the outer surface 32 is a curved surface corresponding to the inner wall 15 of the pipe.
The female screw holes 34 of the boss member 31 are formed so that the axial centers of the female screw holes 34 correspond to each other in a parallel state in which the opposing surfaces 36 of the two pairs of connecting elements 21 are aligned.
Moreover, the distance L2 between the female screw holes 34 provided at both ends of the connection base 25 is spaced apart in the longitudinal direction of the pipe B base portion 13 as shown in FIGS. The axial centers of the female screw holes 34 are formed so as to correspond to each other with respect to the respective through holes 17 and 18 provided.
5 denotes a rib for increasing the strength of the connecting base material 25.

In the above configuration, the base A, the pipe B, the connecting member C, and the four bolts 40 are prepared for the assembling work.
Pipe B is inserted between two pairs of carry-out plates 2 and 2 in base A, and holes 17 and 17 of pipe B are aligned with holes 7 and 7 of carry-out plates 2 and 2.
Further, as shown by a one-dot chain line in FIG. 6, the two pairs of connecting elements 21 are put in a parallel state and inserted to the solid line position with the end (lower end) of the connecting elements 21 in the parallel state.
Further, in this state, as shown in FIG. 6, through holes 7 and 7 provided in the respective carry-out plates 2 and 2 and pipe B from both sides of the two pairs of carry-out plates 2 and 2. Bolts 40 and 40 are respectively inserted through the corresponding through holes 17 and 17 of the base portion 13 and screwed into the female screw holes 34 and 34 for bolt screwing provided at both ends of the corresponding two pairs of connecting elements 21, respectively. And temporarily tighten.
Next, as shown in FIG. 6, from both sides of the two pairs of carry-out plates 2, 2, through holes 8, 8 provided in the respective carry-out plates 2, 2, and pipe B base portion Insert bolts 40, 40 through 13 corresponding slots 18, 18, respectively,
The two corresponding pairs of connecting elements 21 are screwed into bolted female screw holes 34 and 34 provided at both ends, and temporarily tightened.
In this state, the upper surfaces 32 and 32 of the respective boss members 31 and 31 are attracted to the inner surface 15 of the pipe B, respectively.
Then, as shown in FIG. 3, a gap W <b> 5 is formed between the back surfaces 36 of the coupling elements 21.

At the site of the above configuration, the back surface 1 of the base A is fixed to the building D, the four upper and lower bolts are loosened, and the pipe B is adjusted to a predetermined angle.
For example, when it is desired to make the tip 12 of the pipe B vertical for the convenience of antenna installation, a level 42 is embedded in the upper end of the pipe B in advance so that the bubble of the level 42 can be viewed from above. The tip 12 of the pipe B is made vertical.
In this state, the upper and lower four bolts are finally tightened.
The long hole 8 is a long hole for adjusting the inclination of the pipe, and allows the bolt 40 to be repositioned within the range of the long hole 8 when the pipe B is tilt-adjusted as is well known.

Next, FIGS. 7 to 9 showing different embodiments will be described.
As shown in FIG. 7, B1 and B2 are used when two pipes (for example, pipes having an outer diameter of 25 mm and an inner diameter of 23 mm) are connected with their axes aligned with each other. The through-holes for connection provided to the front end portion 49 and the front end portion 50 of B2 are respectively shown.
The outer peripheral surfaces 32f of the two connecting elements 21f are formed in a semicircular arc shape as shown in FIG. 7B, that is, in an arc shape matching the inner peripheral surface 47 of the pipe.
The connecting element 21f is made of iron plated (eg nickel, zinc, chromate, etc.), stainless steel or hard resin.

In the above construction, as shown in FIG. 8 (A), assembling work, pipes B1 and B2, a connecting member C composed of two pairs of connecting elements 21f, and four bolts 40 are prepared. To do.
Next, with one pair of connecting elements 21f arranged in parallel, one end 21fe thereof is inserted into one pipe B1.
Next, as shown in FIG. 8 (B), bolts 40, 40 are passed through the through holes 44, 44 from the outside of B1, respectively, and screwed into the female screw holes 34f, 34f of the connecting element 21f, and temporarily tightened. To do.
In this state, the upper surfaces (outer peripheral surfaces) 32f and 32f of the respective boss members 31f and 31f are attracted to the inner surfaces 47 and 47 of the pipe B1, respectively.
On the other hand, the other end 21fd of the connecting element 21f can be brought into contact with each other. In this state, the positions of the respective female screw holes 34f and 34f are aligned, and the dimension between the outer peripheral surfaces W1 is larger than the inner diameter dimension W2 of the pipe B2. Get smaller.
Therefore, the other end 21fd of the two connecting elements 21f can be easily inserted into the pipe B2, and the working efficiency is improved. Moreover, since the positions of the two female screw holes 34f and 34f inevitably stop at the positions corresponding to the through holes 45 and 45 of the pipe B2 after the insertion is completed, a tightened state as shown in FIG. 7 can be easily obtained. be able to.
In this state, as shown in FIG. 7B, the arc surface on the outer periphery of the connecting element 21f is in close contact with the arc surface in the pipe, and the reinforcing member 26f is provided between the female screw holes 34f and 34f of the connecting element 21f. Since it is located, a large bending strength can be obtained in a large range toward the all sides of the pipe.
As shown in FIG. 7, when tightening is completed, the connecting elements 21f and 21f are pressed against the pipe wall inner surface 47 of the pipes B1 and B2, respectively, even though they are inserted in a parallel state. A gap W5 is formed between 36f and 36f, and the shape of the pipes B1 and B2 is not adversely affected.

  In FIGS. 7 to 9, parts that are considered to have the same or equivalent configuration in function, property, characteristics, or the like as those in FIGS. 1 to 6 are denoted by the same reference numerals as those in FIGS. A duplicate description is omitted by attaching f. (Also, in the subsequent figures, the same reference numerals are used for the same reference numerals as in FIGS. 1 to 6 above, and the alphabets g, h, and i are given in order, and redundant explanations are omitted.)

Next, FIG. 10 which shows an example different in a connection element from the thing of FIGS. 7-9 is demonstrated.
The connecting member C is composed of three connecting elements 21g. These connecting elements 21g are arranged in three equal divisions in the pipes B1 and B2.
Therefore, the opposing surface 36g is formed at three locations, and the gap W5 formed on the opposing surface is Y-shaped in the cross-sectional shape shown in FIG.

In the above construction, as shown in FIG. 10, in the assembling work, pipes B1 and B2, a connecting member C composed of a pair of three connecting elements 21g, and six bolts 40 are prepared.
Next, with one pair of three connecting elements 21g being arranged in parallel, one end 21ge thereof is inserted into one pipe B1.
Next, as is apparent from the description with reference to FIGS. 7 and 8, three bolts 40 from the outer three sides of B1 appearing in FIG. The three coupling elements 21g are screwed into the respective female screw holes 34g and temporarily tightened.
In this state, as is apparent from the description with reference to FIG. 8B, the upper surface (outer peripheral surface) 32g of each boss member 31g is drawn to the inner surface 47 of the pipe B1 and is installed.
On the other hand, the other ends 21gd of the three connecting elements 21g can be brought into contact with each other at the center, and in this state, the positions of the respective female screw holes 34g are aligned, and the dimension between the outer peripheral surfaces is the inner diameter dimension of the pipe B2. Smaller.
Therefore, the other end 21gd of the three connecting elements 21g can be easily inserted into the pipe B2, and the working efficiency is improved. Moreover, since the positions of the three female screw holes 34g inevitably stop at the positions corresponding to the three through holes 45 of the pipe B2 after the insertion is completed, a tightened state as shown in FIG. 10 can be easily obtained. it can.
In this state, as shown in FIG. 10 (B), the arc surfaces of the outer periphery of the three connecting elements 21g are in close contact with the arc surfaces in the pipe,
Since the reinforcing member 26g is positioned between the female screw holes 34g of the connecting element 21g, a large bending strength can be obtained in a large range toward the four directions of the pipe.
As shown in FIG. 10, in the tightening completed state, although the connecting element 21g is inserted in a parallel state, the connecting element 21g is crimped to the pipe wall inner surface 47 of the pipes B1 and B2, respectively, and separated from each other. A gap W5 is formed between them, and the shape of the pipes B1 and B2 is not adversely affected.

Next, the connection element of FIG. 11 showing an example different from FIGS. 9 and 10C in the structure between the female screw hole members of the connection element will be described.
Reference numerals 27 and 27 in the connecting element 21h in FIG. 11 (A) indicate missing portions formed in the recesses for weight reduction, so that the three ribs 26h remain on both sides and the center between the female screw hole members 31h. It is configured.
In FIG. 11B, reference numeral 27 in the connecting element 21i denotes a missing portion formed in the recess for weight reduction, and is configured such that two ribs 26i remain on both sides between the female screw hole members 31i. .

Next, FIG. 12 shows a different example of the two connecting elements 21f and 21f shown in FIG. 8, and a misalignment made up of a pair of protrusions 28 and recesses 29 with respect to their opposing surfaces 36f and 36f. A blocking element is added. One or a plurality of misalignment prevention elements including the pair of protrusions 28 and the recesses 29 may be provided.
The purpose of attaching them is that in the parallel state in which the shaft cores of the female screw holes 34f for screwing each having a plurality of pairs of connecting elements at both ends correspond to each other in the longitudinal direction of the connecting elements, both female screw holes This is to prevent the shaft core from being displaced in the longitudinal direction of the connecting element.
Therefore, the projecting dimension of the protrusion 28 is such that two, three, or four connecting elements 21f are joined in a parallel state in which the opposing surface 36f of each connecting element abuts the opposing surface 36f of the other connecting element. In this case, the projections 28 provided on the opposing surfaces are set to a length that can be accommodated in the concave portion 29 of the mating member, so that the joining surface is prevented from shifting in the surface direction of the opposing surface.
In addition, the length of the protrusion 28 is set to a length that allows the tip of the protrusion 28 to remain in the recess 29 of the mating part even when the opposing surfaces of the pair of connecting elements are slightly separated from each other. Prevents deviation of the facing surface.
However, as shown in FIG. 8 (B) with respect to the female screw holes of the pair of connecting elements, the role is finished when the bolts are screwed together, so that the outer peripheral surface 32 of the connecting element contacts the inner wall 47 of the pipe. In such a state, the tip of the protrusion 28 may remain in the recess of the counterpart, or both may be separated.
Further, the thickness of the protrusion 28 and the inner diameter of the recess 29 may be set to the diameters of the corresponding dimensions so as to prevent the joining surface from being greatly displaced in the surface direction of the opposing surface.

The front view which shows the state in which the base A and the pipe B were connected using the connection member C, and were fixed to the building D. FIG. 2 is an exploded view illustrating respective members by separating the connection between a base A, a pipe B, and a connecting member C in FIG. 1. FIG. 5 is a broken cross-sectional view taken along the line III-III in FIG. 4 for explaining a connection state of a base A, a pipe B, and a connecting member C. FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. 3 for explaining the relationship of the connection state between a base A and a pipe B. The perspective view of the connection member C. FIG. FIG. 5 is a partially cutaway view taken along the line VI-VI in FIG. 4 for explaining a case where a base A and a pipe B are connected using a connecting member C; It is a figure for demonstrating the state which connected two pipes B1 and B2 using the connection member C, (A) is sectional drawing of the VIII-VIII line position of (B). (B) is sectional drawing of the VII-VII line position of (A). FIG. 7A is a diagram in which FIG. 7A is separated for each member, and FIG. 8B is a diagram for explaining a case where two pipes B and B are coupled using a coupling member C. FIG. The perspective view of the connection element 21 of the connection member C used in FIG. The figure which shows the Example from which FIG. 7 differs. (A) is sectional drawing of the XX line position of (B). (B) is sectional drawing of the XI-XI line position of (A). (C) is a perspective view of the connecting element 21 of the connecting member C. FIG. (A) And (B) is a perspective view which shows the Example from which the connection element in the connection member C differs. Sectional drawing for demonstrating the relationship between the outer diameter dimension of the connection element 21 in the connection member C, and the internal diameter dimension of a pipe. The perspective view which fractured | ruptured partially for demonstrating the prior art example and demonstrating the connection structure of a base and a pipe.

Explanation of symbols

A ... Base, B ... Pipe, C ... Connecting member, D ... Building, 1 ... Back, 2 ... Take-out plate, 3 ... Mounting plate, 4 ....・ Attachment hole, 7 ... hole, 8 ... long hole, 11 ... main part, 12 ... front part, 13 ... original part, 14 ... lower end, 15 ... inner surface, 17 ... Hole, 18 ... Hole, 21 ... Connection element, 25 ... Connection base material, 26 ... Rib, 27 ... Missing part, 28 ... Projection part, 29 ...・ Recess, 31 ... Boss-like member / Female screw hole member, 32 ... Top surface (outer peripheral surface), 34 ... Female screw hole, 36 ... Counter surface, 40 ... Bolt, 40a ... Bolt Head, 40b ... nut, 42 ... level, 44 ... through hole 45 ... through hole 47 ... inner surface.

Claims (4)

Each of the plurality formed separately includes a pair of connecting elements,
Each of the configurations of the connecting elements includes female screw hole members having female screw holes for screwing bolts at both ends of the connecting base material serving as the base of the connecting element,
The plural pairs of connecting elements can be placed in the pipe in parallel so that the axial center positions of the female screw holes for screwing the bolts provided at both ends of each connecting base material correspond to each other in the longitudinal direction. In addition, in the state where the parallel connection element is placed in the pipe, there is a gap between the outer diameter of the parallel connection element and the inner diameter of the pipe, and there is a gap in the longitudinal direction of the pipe. The plurality of through holes provided at a distance from each other are in a state in which the shaft cores of the female screw holes for bolting each having a pair of connecting elements at both ends thereof correspond to each other. The corresponding bolts are inserted into the female screw holes for screwing the bolts provided at both ends of the connecting element from the outside of the pipe through the through holes, respectively, and are respectively screwed together. Tighten Structure of the connecting member, characterized in that are also available wear. It is a connecting member used when connecting two pipes each having a plurality of through holes in a state in which the axes coincide with each other,
The connecting member is provided with a pair of connecting elements each formed separately,
Each of the configurations of the connecting elements includes female screw hole members having female screw holes for screwing bolts at both ends of the connecting base material serving as the base of the connecting element,
The plural pairs of connecting elements are juxtaposed in a state where the axial positions of the female screw holes for screwing the bolts provided at both ends of the respective connecting bases correspond to each other in the longitudinal direction.
The shape of the outer peripheral surface of each of the connecting elements in the parallel state is formed into a surface shape corresponding to the inner surface of the pipe, and the connecting elements in the parallel state are the two in which the axial centers coincide with each other. Located in the pipe,
The state of positioning is such that a gap is formed between the outer diameter of the connecting element in the parallel state and the inner diameters of the two pipes, and one bolt of the connecting element in the parallel state is screwed. The female screw hole is located in one of the two pipes, and the other screw thread female screw hole is located in the other pipe and is provided in each of the two pipes. The connecting elements in which the shaft cores of the female screw holes for screwing the connecting elements in the parallel state are positioned so as to correspond to each other with respect to a plurality of through holes, and are in the parallel state. With the respective outer peripheral surfaces and the inner surfaces of the two pipes positioned so as to be in close contact with each other, the bolts are inserted through the through holes from the outside of the pipes into the female screw holes for screwing the connecting elements. Screw and pipe and pie respectively And a plurality of pipes connected to each other of the pair of connecting elements, and by tightening the bolt, the two pipes are connected via the connecting member. The structure of the pipe connection. Between the two pairs of take-out plates in the base fixed to the building, a base part of the pipe is interposed, and the base part of the pipe is provided with two through holes on both sides spaced apart in the longitudinal direction. The two pairs of carry-out plates are also provided with through holes at overlapping positions corresponding to the two through-holes provided at the base portion of the pipe, and the take-out plate and the pipe are connected to the bolts. A connecting member used when connecting using
The connecting member is composed of a pair of two connecting elements formed separately from each other, and each of the connecting elements is composed of female screws for screwing bolts to both ends of a connecting base material serving as a base of the connecting element. Comprising a female screw hole member having a hole,
The two pairs of connecting elements can be placed in the base portion of the pipe in parallel so that the axial centers of the female screw holes for screwing the bolts provided at both ends of the connecting bases correspond to each other. And, in a state where the parallel connection element is placed in the pipe, there is a gap between the outer diameter of the parallel connection element and the inner diameter of the pipe, and the longitudinal direction of the pipe base portion. The axial centers of the female screw holes for screwing provided at both ends of the two pairs of connecting elements are in a state corresponding to each other, respectively, with respect to the respective through holes provided at intervals.
Two bolts are inserted from both sides of the two pairs of carry-out plates through the two through-holes provided in each carry-out plate and the corresponding through-holes in the pipe base, and the corresponding two By screwing and tightening into the female screw holes for screwing provided at both ends of the pair of connecting elements, the pipe base portion can be tightened and integrated at a position spaced apart in the longitudinal direction with respect to the take-out plate. The structure of the connection part of the pipe using the connection member characterized by the above-mentioned. In the parallel state in which the shaft cores of the female screw holes for screwing each having a plurality of a pair of connecting elements at both ends correspond to each other in the longitudinal direction of the connecting elements, A misalignment prevention element comprising a pair of protrusions and recesses is provided so that the axial centers of both female screw holes are not displaced in the longitudinal direction of the coupling element even when the opposing surfaces of the pair of coupling elements are separated. The structure of the connecting member according to claim 1, 2, or 3.

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