JP2020101023A - Connection structure - Google Patents

Abstract

To provide a connection structure which is used for integrating adjacent members, can suppress projection from the members in the pre-stage of installation, and can prevent depression of a surface of the member.SOLUTION: A connection structure of one material 61 and the other material 71 uses a basic shaft 11, a connection shaft 21, a washer 31 and fixing pins 41 and 42, in which the basic shaft 11 is embedded in the one material 61, the connection shaft 21 is embedded in the other material 71, and the fixing pins 41 and 42 fix the basic shaft 11 and the connection shaft 21. The washer 31 can be inserted to the connection shaft 21, and is sandwiched in a boundary between the one material 61 and the other material 71. The connection shaft 21 is made to project from the other material 71 and is inserted to the inside of the basic shaft 11, both of through holes 14 and 24 that are concentrically aligned are penetrated by the fixing pin 41, and the one material 61 and the other material 71 are integrated with each other. The connection shaft 21 may expose the through hole 24 in one portion, can suppress projection, and recession of the surface of the member is prevented by bringing the washer 31 into close contact with the end face of the basic shaft 11.SELECTED DRAWING: Figure 1

Description

The present invention relates to a connecting structure used for integrating adjacent members in a wooden construction or the like.

In a wooden structure such as a wooden building, there are various means for unifying adjacent members, but various hardware may be used to simplify the processing of the members and the work at the site. Although there are various shapes and usages of this metal object, a hozo pipe is widely used. A hozo pipe is a simple shape obtained by cutting out a metal pipe, embedding it so as to straddle the boundary between adjacent members, and further inserting bolts and drift pins so as to intersect the side peripheral surface of the hoso pipe, Integrate the hozo pipe. When the hoso pipe is used as described above, it is not necessary to perform complicated processing on the member, and the hoso pipe has various advantages such as being inexpensive and capable of receiving both tensile load and shear load.

As an example of the prior art related to the present invention, the following patent document can be cited. Among them, Patent Document 1 discloses a joint with a pillar timber that has high retaining strength and can be easily constructed with a simple structure. A fitting is disclosed. In this joint, a locking collar is provided on the bottom of a tubular base body, and a locking hole for inserting a locking pin is provided on the side peripheral surface of the base body. Then, the base member is embedded so as to straddle the boundary between the two adjacent members such as the base and the pillar wood, and the locking pin is inserted from the surface of the member toward the locking hole to integrate the two members. Note that the locking brim is brought into contact with the bottom surface of one member. As a result, the retaining strength is increased and excellent seismic resistance is exhibited.

Patent Document 2 discloses a metal joint that can prevent damage and deformation of members. This joining hardware is composed of a round rod-shaped or strip-shaped punching material, which is embedded so as to straddle the boundary between the two members, and pins are inserted from the surface of each member toward the punching material to join the two members. To do. Therefore, the punch material is provided with a plurality of penetrating portions for inserting the pins, and the penetrating portions are alternately displaced from the central axis of the punch material to both sides. By arranging the penetrating portions in a zigzag manner in this manner, damage or deformation of the member can be prevented even when a strong pulling load acts on the member. Further, each drawing of this document discloses that a brim-shaped seat plate is provided at one end of the punch material.

JP-A-9-250176 JP 2002-38592 A

When using various kinds of metal fittings to integrate members, the metal fittings may be incorporated into the members at the lumbering stage in order to reduce the amount of work at the site. In that case, since the metal fitting is incorporated into only one of the two members to be connected, the metal fitting may largely project from the surface of the member. As a result, the occupied space becomes large, the efficiency in transportation and storage decreases, and there is a risk of accidental accidents due to contact with protruding metal objects. In particular, a large-sized member using a laminated material such as CLT is also large in size, and thus the protrusion from the member is likely to be large.

Since CLT has a sufficient thickness, it can be used as it is as a structural material. When CLT is laid horizontally, it becomes a floor material, and when it is erected upright, it becomes a wall material. The skeleton of the structure is completed simply by integrating the wall materials with various kinds of metal. At that time, the floor material will be sandwiched between the wall materials arranged above and below, but the vertical load acting on the wall material gradually collapses the upper and lower surfaces of the floor material, causing distortion in the skeletal structure. It may occur and cause various problems. It should be noted that wood is unlikely to be deformed by a compressive load along the fiber direction, but is easily deformed by a compressive load orthogonal to the fiber direction. Therefore, the wall material is not easily affected by the vertical load, but the floor material that is developed horizontally tends to be deformed.

The present invention was developed on the basis of such an actual situation, and it is used to integrate adjacent members with each other, can suppress the protrusion from the member in the pre-installation stage, and can prevent the depression of the surface of the member. The purpose is to provide a connection structure that can be used.

The invention according to claim 1 for solving the above-mentioned problems is a connecting structure used for integrating one material and the other material adjacent to each other, wherein a basic shaft, a connecting shaft, a washer, and a fixing pin are used, The basic shaft and the connecting shaft have a rod shape with a circular cross section, the end of the basic shaft has a cylindrical shape capable of accommodating the connecting shaft without looseness, and the washer is insertable into the connecting shaft without loosening, The basic shaft is embedded in the one material, the connection shaft is embedded in the other material, and one end side of the connection shaft is projected toward the one material, and the washer is inserted into the connection shaft and the one Sandwiched between the material and the other material, through holes are provided in the side peripheral surfaces of the basic shaft and the connecting shaft, and the fixing pin is provided from the surface of the one material and the other material toward the through hole. The basic shaft and the connecting shaft are fixed by inserting, and the connecting shaft protruding from the other material enters the inside of the basic shaft, and the fixing pin penetrates both through holes that are concentrically aligned. One material and the other material are integrated, and the washer contacts the end surface of the basic shaft, whereby the compressive load acting on the boundary surface between the one material and the other material can be reduced. It is a connected structure.

The connecting structure according to the present invention is for integrating members referred to as one member and the other member in various wooden structures including a wooden structure, and the one member and the other member have surfaces on both sides. Shall come into contact. The connecting structure according to the present invention uses four kinds of metal parts, that is, a basic shaft, a connecting shaft, a washer, and a fixing pin. The one material and the other material are assumed to be wood, but laminated materials such as CLT are often used.

The basic axis is rod-shaped with a circular cross section and is embedded in one material. Therefore, a hole for burying the basic shaft without loosening is preliminarily processed in one material. Then, in order to fix the basic shaft to the one member, the fixing pin is inserted from the surface of the one member toward the basic shaft. Therefore, the side peripheral surface of the basic shaft is provided with a through hole for inserting the fixing pin. A plurality of through holes are provided along the axial direction of the basic shaft, and the basic shaft is fixed by a plurality of fixing pins. Further, the end of the basic shaft needs to be hollow to accommodate the connecting shaft. Furthermore, when fixing the basic shaft to one material, the dimensions of the relevant parts are adjusted in advance so that the end surface of the basic shaft is aligned near the surface of the one material.

The connecting shaft has a round bar shape and is embedded in the other material, but the connecting shaft does not have to be hollow. Then, a hole for loosely embedding the connection shaft is preliminarily processed in the other material, and the fixing pin is inserted from the surface of the other material toward the connection shaft. Therefore, a through hole is provided on the side peripheral surface of the connecting shaft, similarly to the basic shaft. A plurality of through holes are provided along the axial direction of the connecting shaft, and the connecting shaft is fixed by a plurality of fixing pins. In addition, the entire connecting shaft is not embedded in the other material, but one end of the connecting shaft projects from the other material, and a through hole exists in the protruding range.

When one material and the other material are integrated, the connecting shaft protruding from the other material is inserted into the basic shaft on the one material side, and further, the fixing pin is inserted so as to penetrate the concentric basic shaft and the connecting shaft. As a result, the basic shaft and the connecting shaft are integrated, and the one material and the other material are integrated via the basic shaft and the connecting shaft. Since the fixing pin is inserted so as to penetrate the basic shaft and the connecting shaft, the positions of both through holes need to be adjusted, and the embedded positions of the basic shaft and the connecting shaft also need to be adjusted in advance.

The washer, like a general-purpose one, has a disk shape with the inside cut out, is inserted into the connecting shaft, and is arranged so as to be sandwiched between the one material and the other material. Since the washer has a constant thickness, a round groove or the like for accommodating the washer is formed on the surface of either the one material or the other material. Naturally, this round groove is aligned with the prepared hole.

Further, the inner diameter of the washer is made slightly larger than the outer diameter of the connecting shaft, so that the washer can be moved naturally along the side peripheral surface of the connecting shaft. As a result, in the state where the basic shaft and the connecting shaft are integrated, the washer comes into contact with the end surface of the basic shaft and its movement is restricted. Therefore, the load by which the other material presses the one material is also received by the basic shaft via the washer, is dispersed and transmitted to the position apart from the other material through the fixing pin penetrating the basic shaft, and the one material and the other material are transmitted. The load acting on the boundary between and is relaxed.

In this way, as a connecting structure that integrates one material and the other material, four types of metal parts of the basic shaft, the connecting shaft, the washer, and the fixing pin are used, and one end side of the connecting shaft is inserted into the inside of the basic shaft. By integrating with the fixing pin, the whole basic shaft can be embedded inside one material, and the connecting shaft only needs to expose one through hole, and the space occupied even after incorporating these into each member Does not increase significantly and does not have a major impact on transportation or storage. In addition to inserting a washer into the connecting shaft and arranging the washer at the boundary between the one material and the other material, the load acting on the boundary between the one material and the other material is alleviated by bringing the washer into contact with the end surface of the basic shaft. , It is possible to prevent depression due to aging.

The invention according to claim 2 considers installation of the floor material on the intermediate floor, and the other material is arranged so as to sandwich the facing surface of one material, and the connecting shaft and the washer are provided at both ends of the basic shaft. It is arranged on the side, and the other material of both is integrated with one material. In the middle floor of the building, etc., wall materials are arranged on both upper and lower sides of the floor material, and there is a case where they are desired to be integrated together. The present invention assumes such a situation, and arranges a connecting shaft and a washer on both ends of a single basic shaft.

The basic axis used here inevitably has a length corresponding to the thickness of one material, and is entirely embedded inside one material. Further, the connecting shaft projects from the surface of each of the other materials, and after the projecting portion is inserted into the inside of the basic shaft, the fixing pin is inserted from the surface of the one material as before. Then, the fixing pin collectively penetrates the basic shaft and the connecting shaft, so that one material in the center and the other material on both sides are integrated.

As in the invention according to claim 1, four types of metal parts, that is, a basic shaft, a connecting shaft, a washer, and a fixing pin are used as a connecting structure for integrating one material and the other material, and one end side of the connecting shaft is a basic shaft. By inserting it into the inside of the above and integrating both with a fixing pin, the connection between one material and the other material is completed. The basic shaft can be entirely embedded in the one material, and the connecting shaft can also expose one through hole. Therefore, even when the connecting shaft is incorporated in the other material, the protrusion from the other material can be suppressed, the occupied space does not extremely increase, and the influence on transportation and storage can be minimized.

In addition, insert a washer into the connecting shaft, place the washer at the boundary between one material and the other material, and bring the washer into contact with the end surface of the basic shaft so that the load that the other material presses on the one material is The load is received and its load is distributed and transmitted to a wide range by a fixing pin that penetrates the basic shaft. As a result, the load acting on the boundary between the one material and the other material is relaxed, and it is possible to prevent the surface of the one material from being depressed due to aging.

As in the invention according to claim 2, by disposing the connecting shaft and the washer on both end sides of the basic shaft, even when the wall materials are arranged on both upper and lower surfaces of the floor material such as the middle floor of the building, these Can be integrated and integrated. The basic axis used here inevitably has a length equivalent to the thickness of one material, does not protrude from the surface of one material, and does not affect transportation or storage.

FIG. 6 is a perspective view showing an example of the shape of the connection structure according to the present invention, in which one material is sandwiched by the other material arranged above and below, and these are integrated by parts such as a basic shaft and a connecting shaft. Although it is a perspective view showing the detailed shape of each part drawn in FIG. 1, the basic shaft and the washer are drawn in half. FIG. 2 is a perspective view showing a state in which a basic shaft is incorporated in one member of FIG. 1 and a connecting shaft is incorporated in the other member. It is a perspective view which shows the state which integrated the one material and the other material of FIG. It is a perspective view which shows the case where two adjacent members are integrated, one material of two members is an upright wall material, and the other material is a floor material which develops horizontally. It is a perspective view showing what has a basic axis as a divided structure and was able to relieve a sudden tensile load. The method of assembling this basic shaft is drawn on the right side of the figure. It is a perspective view which shows the state which integrated the other material using the basic axis|shaft of FIG. In addition, on the right side of the drawing, a state where the members are separated from each other by a sudden tensile load and the coupler is deformed is depicted.

FIG. 1 shows an example of the shape of the connecting structure according to the present invention, in which one material 61 is sandwiched by the other material 71 arranged above and below, and these are integrated by parts such as the basic shaft 11 and the connecting shaft 21. The one material 61 is assumed to be a floor material that expands in a plane, and the other material 71 is assumed to be an upright wall material, both of which are made of wood such as CLT having an appropriate thickness. , They function as structural materials such as buildings as they are. In FIG. 1, the other material 71 is arranged along the outer edge of the one material 61, and one side surface of each material is aligned without any step.

This connecting structure includes a basic shaft 11 to be embedded in one material 61, a connecting shaft 21 to be embedded in the other material 71, fixing pins 41 and 42 for fixing the basic shaft 11 and the connecting shaft 21, and a washer to be inserted into the connecting shaft 21. 31 and are used. Of these, the basic shaft 11 has a hollow shape with a simple circular cross section, and is embedded in the first member 61, and therefore has the same length as the thickness of the first member 61. Further, through holes 14 and 15 for inserting the fixing pins 41 and 42 are provided on the side peripheral surface of the basic shaft 11. Of course, the through holes 14 and 15 are arranged on both side peripheral surfaces so as to sandwich the center of the basic shaft 11.

On the other hand, in order to insert the basic shaft 11 without loosening, the material 61 is formed with a mortise hole 63 that penetrates the upper and lower surfaces, and further is formed with pin holes 64 and 65 for inserting the fixing pins 41 and 42. The pin holes 64 and 65 extend horizontally from the side end surface of the one-side member 61, intersect with the mortise holes 63 on the way, and are arranged in accordance with the through holes 14 and 15 of the basic shaft 11. In FIG. 1, upper and lower through holes 14 and 15 are drawn on the side peripheral surface of the basic shaft 11, but these are different in arrangement but have no difference in inner diameter and the like.

The connecting shaft 21 is in the shape of a round bar, and since one is embedded in each of the upper and lower other materials 71, two are used here, but both have the same shape. Further, the connecting shaft 21 is also provided with through holes 24 and 25 on its side peripheral surface for inserting the fixing pins 41 and 42. Then, the other material 71 is formed with a mortise hole 73 for inserting the connecting shaft 21 without loosening, while the other material 71 located above is pierced with a mortise hole 73 upward from the lower end surface thereof. .. On the other hand, with respect to the other material 71 located below, a mortise hole 73 is formed downward from the upper end surface thereof. In addition, the other material 71 is formed with a pin hole 75 for inserting the fixing pin 42. The pin hole 75 extends horizontally from the side surface of the other member 71, intersects with the mortise hole 73 on the way to reach the opposite surface, and is arranged in accordance with the through hole 25 of the connecting shaft 21.

The mortise hole 73 formed in the other material 71 has a bottom at both the top and bottom, and the connection shaft 21 is inserted to a predetermined depth therein, and the through hole 25 and the pin hole 75 are concentrically aligned. Protrudes from the other material 71. Then, the protruding connecting shaft 21 is inserted into the inside of the basic shaft 11 embedded in the one-side member 61, the through hole 14 of the basic shaft 11 and the through hole 24 of the connecting shaft 21 are aligned concentrically, and then both are penetrated. When the fixing pin 41 is inserted into, the basic shaft 11 and the connecting shaft 21 are integrated via the fixing pin 41. Therefore, the connecting shaft 21 is provided with a through hole 24 in a range projecting from the other member 71.

The washer 31 is inserted in the connecting shaft 21 in a simple disk shape, but its inner diameter is slightly larger than the outer diameter of the connecting shaft 21 and is freely movable with respect to the connecting shaft 21. A round groove 77 for housing the washer 31 is formed at the boundary between the one material 61 and the other material 71. The circular groove 77 in the figure is machined into the other material 71 and is aligned with the mortise hole 73 concentrically. The washer 31 is not simply accommodated in the boundary between the one member 61 and the other member 71, but the washer 31 plays a role of contacting not only the other member 71 but also the end surface of the basic shaft 11 to transfer the load. ..

FIG. 2 shows the detailed shapes of the parts drawn in FIG. 1, but the basic shaft 11 and the washer 31 are shown in a half-split state. Here, the connecting shaft 21 and the washer 31 are arranged so as to sandwich the basic shaft 11 from above and below. The washer 31 is inserted into the connecting shaft 21, but its movement is restricted by coming into contact with the end face of the basic shaft 11. .. Further, on the side peripheral surface of the hollow basic shaft 11, three rows of through holes 14 and 15 are arranged vertically. Besides, one end side of the connecting shaft 21 enters the inside of the basic shaft 11, and the individual connecting shafts 21 are provided with three rows of through holes 24, 25 in the vertical direction.

In each connection shaft 21, the through hole 24 on the side closest to the basic shaft 11 enters the inside of the basic shaft 11, and the through hole 24 is concentric with the through hole 14 provided near the end of the basic shaft 11. And the fixing pin 41 is inserted thereinto, so that the basic shaft 11 and the connecting shaft 21 are integrated. Further, when the fixing shaft 42 is inserted into the through hole 15 located in the center of the basic shaft 11 after the basic shaft 11 is embedded in the one member 61, the basic shaft 11 is fixed to the one member 61. Similarly, when the fixing pin 42 is inserted into the through hole 25 of the connecting shaft 21 after the connecting shaft 21 is embedded in the other member 71, the connecting shaft 21 is fixed to the other member 71.

FIG. 3 shows a state in which the basic shaft 11 is incorporated in the one member 61 of FIG. 1 and the connection shaft 21 is incorporated in the other member 71. The basic shaft 11 is completely embedded inside the one-side member 61 and does not protrude to the outside at all. A fixing pin 42 is inserted near the center of the basic shaft 11, and the basic shaft 11 is fixed to the one member 61. Note that at this stage, the fixing pin 41 cannot be inserted into the pin hole 64 near the upper and lower surfaces of the one member 61.

Regarding the other member 71, the connecting shaft 21 is inserted into the dowel hole 73, and the fixing pin 42 is inserted so as to intersect with the connecting shaft 21, and the connecting shaft 21 is fixed to the other member 71. In this state, one end side of the connecting shaft 21 projects from the other member 71, and this is inserted into the inside of the basic shaft 11. A washer 31 is inserted into the protruding connecting shaft 21, and the washer 31 is housed in a round groove 77 formed in the other member 71. As shown in this figure, the basic shaft 11 and the connecting shaft 21 can be incorporated at the lumbering stage, and the work at the site can be simplified.

After FIG. 3, the protruding connecting shaft 21 is inserted into the inside of the basic shaft 11, and the other upper and lower members 71 are brought into contact with the one member 61. Further, when the fixing pin 41 is inserted so as to penetrate the basic shaft 11 and the connecting shaft 21 arranged concentrically, the one member 61 and the other member 71 are integrated via the basic shaft 11 and the connecting shaft 21. In the present invention, a component corresponding to a conventional hoso pipe is divided into two elements, a basic shaft 11 and a connecting shaft 21, and these are integrated by a fixing pin 41. Therefore, the basic shaft 11 and the connecting shaft 21 are incorporated into a member. Even after that, the protrusion from the member can be suppressed. The mortise holes 63, 73 and the pin holes 64, 65, 75 need to be machined at predetermined positions based on design drawings and the like.

FIG. 4 shows a state in which the one material 61 and the other material 71 of FIG. 1 are integrated. One end side of the connecting shaft 21 embedded in the other material 71 is inserted into the basic shaft 11 embedded in the one material 61, and when the fixing pin 41 is inserted from the pin hole 64 of the one material 61, the basic shaft 11 is inserted. And the connecting shaft 21 are integrated, and one material 61 and the other material 71 are inevitably integrated. In addition, one material 61 is a vast floor material that expands horizontally, and the other material 71 is a vast wall material that stands upright, and in order to secure necessary strength, a plurality of connecting structures are arranged at predetermined intervals. Often.

A washer 31 is sandwiched between the one material 61 and the other material 71, and the washer 31 is in contact with the end surface of the basic shaft 11. Therefore, a part of the load by which the other material 71 presses the one material 61 is transmitted to the basic shaft 11 via the washer 31, and the load acting on the upper and lower surfaces of the one material 61 is relaxed. It is possible to suppress the deformation of 61 and the like.

FIG. 5 is a perspective view showing a case where two adjacent members are integrated with each other. One member 61 of the two members is an upright wall member, and the other member 71 is a floor member that is horizontally developed. The connecting structure according to the present invention can also be used when only two members are integrated as shown in this figure. Here, the basic shaft 11 is embedded in one material 61 and the connection shaft 21 is embedded in the other material 71. The upper end of the connecting shaft 21 projects, and this enters the inside of the basic shaft 11. Then, the fixing pin 41 is inserted from the side surface of the one-side member 61 and penetrates the basic shaft 11 and the connecting shaft 21 arranged concentrically to integrate the basic shaft 11 and the connecting shaft 21, and the one-side member 61 and the other member 71 are also integrated. To do. The washer 31 is also sandwiched by the boundary between the one material 61 and the other material 71 as in the previous drawings, and the washer 31 is in contact with the end surface of the basic shaft 11.

FIG. 6 shows a structure in which the basic shaft 12 has a divided structure, and a sudden tensile load can be relaxed. As shown in each of the figures so far, the basic shaft 11 can be formed in a simple hollow shape, and the manufacturing cost can be suppressed. However, as shown in this figure, by forming the basic shaft 12 in a divided structure, it is possible to alleviate a sudden tensile load and enhance the safety when an earthquake is encountered. The basic axis 12 here has a structure in which two concentric subdivided tubes 17 are integrated by a coupling tool 51, and by suddenly extending the coupling tool 51, a sudden tensile load is relieved.

The subdivision tube 17 has a hollow circular cross section, but inside thereof, a portion whose inner diameter is narrowed down is provided, and a female screw 18 is provided at the center thereof. Further, a through hole 14 for inserting the fixing pin 41 is provided near one end of the subdivision tube 17. Further, the coupling tool 51 is a stud bolt having male threads 52 provided at both ends thereof, and a head 53 having a square cross section is provided at one end side thereof so as to restrict rotation. As a matter of course, the connector 51 determines the material and the cross-sectional diameter so as to generate an appropriate elasto-plastic deformation with respect to the assumed tensile load. The connecting shaft 22 and the washer 31 are also used in the same manner as in the previous figures.

When the two subdivision tubes 17 are integrated, as shown on the right side of the figure, first, the male screw 52 provided below the coupling tool 51 is screwed into the female screw 18 of the subdivision pipe 17, and the base of the male screw 52 is female. Tighten until it bites into 18 and cannot rotate. Next, one of the remaining subdivision tubes 17 is brought closer from above the coupling tool 51, and the female screw 18 is screwed onto the male screw 52 above the coupling tool 51, and tightened until the upper and lower subdivision tubes 17 are brought into close contact with each other and integrated. When done, the assembly of the basic shaft 12 is completed.

The basic shaft 12 that has been assembled is handled in the same way as in the previous figures. The connecting shaft 22 is inserted into the end of the basic shaft 12, and the fixing pin 41 is inserted so as to penetrate the basic shaft 12 and the connecting shaft 22 that are arranged concentrically. The basic shaft 12 and the connecting shaft 22 are integrated by inserting. In FIG. 6, the connecting shaft 22 is also hollow so as to prevent interference with the coupler 51. In addition, the subdivision tube 17 and the coupling tool 51 are not limited to the configuration shown in this figure, and various other configurations can be introduced.

FIG. 7 shows a state in which the one material 61 and the other material 71 are integrated using the basic shaft 12 of FIG. In addition, in this figure, in order to show an internal structure, one material 61 and the other material 71 are drawing the longitudinal cross section. In this way, the basic shaft 12 is embedded in the one member 61, the connecting shaft 22 is embedded in the other member 71, the end portion of the connecting shaft 22 enters the inside of the basic shaft 12, and the basic pin 12 is fixed by the fixing pin 41. And the connecting shaft 22 are integrated. Therefore, the one material 61 is sandwiched between the upper and lower other materials 71. However, when a sudden tensile load is applied to this connecting structure, as shown on the right side of the drawing, the coupler 51 is stretched to prevent the one member 61 and the other member 71 from being damaged. When the coupling tool 51 is stretched in this way, the fixing pin 41 inserted in the one-side member 61 also moves, so that the one-side member 61 may be damaged. Therefore, measures may be taken such as using a short fixing pin 41.

The drawings so far show only specific examples of the constitutional example of the connecting structure according to the present invention, and the number of the fixing pins 42 for fixing the basic shafts 11 and 12 and the connecting shafts 21 and 22 depends on conditions such as strength. The fixing pin 41 that integrates the basic shafts 11 and 12 and the connecting shafts 21 and 22 may be a plurality of pins in consideration of the strength.

11 Basic axis 12 Basic axis (composed of multiple subdivision tubes)
14 Through holes (those that are concentric with the through holes of the connecting shaft)
15 Through hole 17 Subdivision tube 18 Female thread 21 Connection shaft 22 Connection shaft (hollow)
24 Through holes (those that are aligned with the through holes of the basic shaft)
25 Through hole 31 Washer 41 Fixing pin (one that intersects both the basic shaft and the connecting shaft)
42 Fixed pin (intersecting with either basic axis or connecting axis)
51 Coupling 52 Male screw 53 Head 61 One-sided material 63 Hollow hole 64 Pin hole (used to fix both basic shaft and connecting shaft)
65 pin hole (used only for fixing the basic shaft)
71 Other Material 73 Hollow Hole 75 Pin Hole 77 Round Groove

Claims (2)

A connecting structure used to integrate one material (61) and the other material (71) adjacent to each other, which includes a basic shaft (11, 12), a connecting shaft (21, 22), a washer (31), and a fixing pin (31). 41, 42) and
The basic shafts (11, 12) and the connecting shafts (21, 22) are rod-shaped with a circular cross section, and the ends of the basic shafts (11, 12) can accommodate the connecting shafts (21, 22) without loosening. A cylindrical shape, and the washer (31) can be inserted into the connecting shafts (21, 22) without looseness,
The basic shaft (11, 12) is embedded in the one material (61), the connecting shaft (21, 22) is embedded in the other material (71), and one end side of the connecting shaft (21, 22) is The washer (31) is inserted into the connecting shaft (21, 22) and sandwiched at the boundary between the one material (61) and the other material (71),
Through holes (14, 15, 24, 25) are provided in the side peripheral surfaces of the basic shafts (11, 12) and the connection shafts (21, 22), and the one material (61) and the other material ( 71) by inserting the fixing pins (41, 42) from the surface toward the through holes (14, 15, 24, 25) so that the basic shafts (11, 12) and the connecting shafts (21, 22) are Fixed,
The connecting shafts (21, 22) protruding from the other member (71) enter the inside of the basic shafts (11, 12), and the through holes (14, 24) that are concentrically aligned are provided with the fixing pins (41). ), the one material (61) and the other material (71) are integrated,
The washer (31) is in contact with the end faces of the basic shafts (11, 12) to reduce the compressive load acting on the interface between the one member (61) and the other member (71). A connection structure characterized by. The other material (71) is arranged so as to sandwich the facing surface of the one material (61), and the connecting shafts (21, 22) and the washer (31) are arranged on the basic shaft (11, 12). The connecting structure according to claim 1, wherein the connecting member (71) is arranged at both ends and both of the other members (71) are integrated with the one member (61).

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