JP2020197039A - Connection structure - Google Patents

Abstract

To provide a connection structure which is used to unite three adjacent members, and can prevent the member sandwiched in the middle from sinking, prevent a load from concentrating on a limited range of the members, and improve earthquake resistance.SOLUTION: A connection structure that unites three members which are an intermediate material 51 and a pair of outward materials 61 consists of detention tools 11, 12, a fixing pin 37, a bolt 35, and pressure receiving means. The detection tools 11, 12 have a shaft 23, a flange 24, and a pressure receiving shaft 31, and are arranged opposite each other across the intermediate material 51, shafts 23 thereof is inserted into the outer materials 61, and the detention tools 11, 12 are fixed with fixing pins 37. Further, the bolt 35 draw opposite flanges 24 to unite the intermediate material 51 and outward materials 61. Then the pressure receiving shafts 31 function as pressure receiving means inside the intermediate material 51, and the opposite detention tools 11, 12 are brought into contact with each other to prevent the intermediate material 51 from sinking. In addition, the bolt 35 deforms to reduce a shock to improve earthquake resistance.SELECTED DRAWING: Figure 1

Description

The present invention relates to a connecting structure used to integrate three adjacent members in a wooden building or the like.

In a wooden structure such as a wooden building, there are various methods for integrating adjacent members, but various hardware may be used to simplify the processing of the members and the work in the field. There are various shapes and usages of this hardware, but Hozopipe is an example of a widely used one. The hozo pipe is a simple shape made by cutting out a metal pipe, embedded so as to straddle the boundary between adjacent members, and further insert bolts and fixing pins so as to penetrate the side peripheral surface of the hozo pipe, and then insert the member and the hozo pipe. To integrate. In addition to being inexpensive, hozopipes have various advantages such as the need for complicated processing of members and the ability to receive both tensile load and shear load.

An example of the prior art related to the present invention is the patent document described later, and in the patent document 1 among them, the joint with the pillar timber which has high retaining strength and can be easily constructed with a simple structure. The condition is disclosed. This joint has a locking collar provided at the bottom of the tubular substrate, and a locking hole for inserting a locking pin is provided on the side peripheral surface of the substrate. Then, the two members are integrated by embedding the base so as to straddle the two adjacent members such as the base and the pillar wood, and then inserting the locking pin from the surface of the member toward the locking hole. The locking collar is brought into contact with the bottom surface of one of the members. As a result, the retaining strength is increased and excellent seismic strength is exhibited.

Patent Document 2 discloses a metal joint that can prevent breakage and deformation of members. This joining metal fitting is composed of a round bar-shaped or strip-shaped pestle material, and the pestle material is embedded so as to straddle the two members, and the two members are joined by inserting a pin from the surface of each member toward the pestle material. Therefore, the punch material is provided with a plurality of penetrating portions for inserting pins, and the penetrating portions are provided so as to be alternately displaced from the central axis of the punch material to both sides. By arranging the penetrating portions in a staggered pattern in this way, it is possible to prevent the member from being damaged or deformed even when a strong pulling load is applied to the member. Further, each drawing of this document discloses that a brim-shaped seat plate is provided at one end of the punch material.

Japanese Unexamined Patent Publication No. 9-250176 JP-A-2002-38592

Laminated wood is often used in wooden buildings, and plate-shaped laminated wood with sufficient thickness can be used as a structural material simply by cutting it to a predetermined size, and when it is laid horizontally, it becomes a flooring material. When it is erected, it becomes a wall material, and the skeleton of a wooden building is completed simply by integrating these with various hardware. In such a skeleton, there are many places where the floor material is sandwiched between the upper and lower wall materials, but in these places, the upper and lower surfaces of the floor material gradually collapse due to the vertical load acting on the wall material. Eventually, the skeletal structure may be distorted, leading to various defects. Note that wood is unlikely to be deformed by a compressive load along the fiber direction, but is likely to be deformed by a compressive load orthogonal to the fiber direction. Therefore, the upright wall material is not easily affected by the vertical load, but the horizontally deployed floor material is likely to be deformed by the vertical load.

In order to prevent such a collapse of the floor material, it is conceivable to insert a hozo pipe so as to penetrate the upper and lower surfaces of the floor material, and directly connect the upper and lower wall materials through the pipe. However, in this method, since the vertical load is transmitted through the hozo pipe, the load is concentrated in a limited range around the hozo pipe, such as the place where the fixing pin is driven, and the wall material may be damaged. Therefore, it is desirable to transmit the vertical load even at the boundary surface between the floor material and the wall material to reduce the burden on the wall material. In addition, earthquake countermeasures are indispensable for wooden buildings in recent years, and it is necessary to be able to maintain the connection between members without damage even in the event of a large earthquake.

The present invention has been developed based on these circumstances, and is used to integrate three adjacent members, to prevent the members sandwiched between them from sinking, and to concentrate the load on a limited range of the members. The purpose is to provide a connected structure that can prevent earthquake resistance and improve earthquake resistance.

The invention according to claim 1 for solving the above-mentioned problems is a connecting structure in which an intermediate material and a pair of outer materials sandwiching the front and back surfaces of the intermediate material are integrated, and a flange is provided at one end of the shaft. The indwelling tool provided with the above, a fixing pin to be driven so as to penetrate the side peripheral surface of the shaft, a bolt to be inserted so as to penetrate the front and back surfaces of the intermediate material, and a rod-shaped pressure receiving means to be embedded in the intermediate material. The indwelling tools are arranged so as to sandwich the intermediate material, and in order to embed the shaft in each of the outer materials, a shaft hole orthogonal to the interface with the intermediate material is provided and fixed. The pin is driven from the surface of the outer material toward the shaft, a step for embedding the flange is provided at the interface between the intermediate material and the outer material, and the bolt sandwiches the intermediate material. The pressure receiving means connecting the flanges facing each other is embedded in the intermediate material so as to attract the flanges facing each other, and the indwelling tools facing each other come into contact with each other via the pressure receiving means. It is a connecting structure characterized in that a compressive load is transmitted.

The connecting structure according to the present invention integrates three adjacent members in various wooden structures such as wooden buildings, and these three members are referred to as intermediate members and outer members. And the intermediate material is literally arranged in the middle of the three members, and the outer material is arranged one by one on the front side and the back side of the intermediate material, and one of the two outer materials contacts the surface of the intermediate material. Then, the other side comes into contact with the back surface of the intermediate material and attracts the outer material facing each other, thereby integrating the intermediate material and the outer material. Note that the intermediate material and the outer material are premised on wood, and laminated wood such as CLT is often used.

The connecting structure according to the present invention is mainly composed of four elements: an indwelling tool, a fixing pin, a bolt, and a pressure receiving means. Among them, the indwelling tool is a metal part to be embedded in each outer material, and inevitably, two indwelling tools are used in one connecting structure. These two have almost the same shape, but the details are different due to the balance with other parts. Each indwelling tool has a shape in which a disk-shaped flange is integrated with one end of a rod-shaped shaft, and the shaft is inserted into a shaft hole processed into an outer material. The shaft hole extends in a direction orthogonal to the boundary surface between the intermediate material and the outer material, and has a cross section that can accommodate the shaft without loosening. Further, the flange is embedded in the step processed on the boundary surface between the intermediate material and the outer material, and is not exposed to the outside. The step may be processed into either an intermediate material or an outer material.

The fixing pin is for fixing the indwelling tool to the outer material, and is driven from the surface of the outer material to intersect the shaft of the indwelling tool. Therefore, a side hole for passing a fixing pin is provided on the side peripheral surface of the shaft. In addition, the outer material is pre-processed with pin holes at positions concentric with the side holes. At the time of construction, if the shaft is inserted into the shaft hole of the outer material and the fixing pin is driven after the position adjustment, the shaft becomes immovable and the indwelling tool is fixed to the outer material. As the fixing pin, various rod-shaped bolts such as general-purpose bolts can be used.

The bolts are for pulling the indwelling tools that are arranged opposite to each other with the intermediate material in between, and are inserted so as to connect the flanges of the indwelling tools. Therefore, one flange is provided with a round hole for inserting the shaft portion of the bolt, and the remaining flange is formed with a female screw to be screwed with the bolt. Then, in order to insert a bolt into the intermediate material, a hole is machined through the front and back surfaces. At the time of construction, the indwelling tool is arranged so as to sandwich the intermediate material, and when the bolt is inserted and tightened so as to connect the two, the opposing indwelling tool is fixed to the intermediate material.

The pressure receiving means is for bringing the indwelling tools arranged on the intermediate material into contact with each other, and is embedded inside the intermediate material to prevent the two indwelling tools from approaching each other. Therefore, the pressure receiving means needs to be in contact with the individual indwelling tools, but it is not necessary to counter the separation of the two indwelling tools, and the pressure receiving means need only be in contact with the indwelling tools. The details of the pressure receiving means can be freely determined, and the pressure receiving means can be incorporated into the indwelling tool itself, but it can also be an independent part separate from the indwelling tool.

In this way, regarding the connecting structure in which the intermediate material is sandwiched between the pair of outer materials, the indwelling tool, the fixing pin, the bolt, and the pressure receiving means are used to embed the indwelling tool in each outer material, and the intermediate material is sandwiched between the indwelling tools and the opposite indwelling. By pulling the tools with bolts and embedding a pressure receiving means in the intermediate material to prevent the indwelling tools from approaching each other, a compressive load such that the outer material sandwiches the intermediate material is transmitted by the pressure receiving means. Therefore, this compressive load does not act on the front and back surfaces of the intermediate material, and its depression can be prevented. Further, in the present invention, the load acting on the outer material can be received by the flange, and the concentration of the load can be suppressed at the place where the fixing pin is driven. In addition, the elasto-plastic deformation of the bolt can alleviate the impact, improving seismic resistance.

The invention according to claim 2 specifies a pressure receiving means, wherein the pressure receiving means is a pressure receiving shaft arranged in the opposite direction of the shaft with respect to a flange, and the shaft and the pressure receiving shaft are arranged concentrically. .. The pressure receiving shaft is arranged concentrically with the shaft, connects the front and back surfaces of the intermediate material, and both ends come into contact with the flange of the indwelling tool. Therefore, the compression load can be received by the pressure receiving shaft, and the indwelling tools can be prevented from approaching each other. It is necessary to machine a shaft hole for accommodating the pressure receiving shaft in the intermediate material, which is inevitably aligned with the shaft hole of the outer material.

The pressure receiving shaft can be integrated with the indwelling tool, but it can also be a separate part from the indwelling tool. If the pressure receiving shaft is integrated with the indwelling tool, the shaft and the pressure receiving shaft are integrated, and a flange is incorporated in the intermediate portion thereof. As a result, with the flange as a reference, the side inserted into the outer material becomes the shaft, and the side inserted into the intermediate material becomes the pressure receiving shaft. The length of the pressure receiving shaft in this structure may be half the thickness of the intermediate material for both of the two indwelling tools, but it may be biased to one side. In addition, when the indwelling tool and the pressure receiving shaft are separate parts, the length of the pressure receiving shaft is aligned with the distance between the opposing flanges, and both ends of the pressure receiving shaft are brought into contact with the flange.

The invention according to claim 3 also specifies the pressure receiving means, wherein the pressure receiving means is a pressure receiving pipe that comes into contact with the vicinity of the outer edge of the flange, and the shaft portion of the bolt is inserted inside the pressure receiving pipe. To do. The pressure receiving pipe is sandwiched between the opposing flanges to receive a compressive load, and inside the pressure receiving pipe, a shaft portion of a bolt that attracts the indwelling tools is accommodated. Inevitably, the pressure receiving pipe is not concentric with the shaft. Therefore, for the intermediate material, it is not necessary to machine a hole or the like at a position concentrically aligned with the shaft, and a bolt or the like for another purpose can be arranged by using this portion. In the present invention, in order to embed the pressure receiving pipe, it is necessary to machine a pipe hole penetrating the front and back surfaces of the intermediate material.

As in the invention of claim 1, the connecting structure is composed of three members called an intermediate material and an outer material, and the intermediate material is sandwiched between the pair of outer materials, by using an indwelling tool, a fixing pin, a bolt, and a pressure receiving means. In addition to embedding the indwelling tool in the outer material of, the indwelling tool facing each other across the intermediate material is pulled by a bolt, and the intermediate material is further embedded with a pressure receiving means to prevent the indwelling tools from approaching each other. The compressive load that sandwiches the material is transmitted by the pressure receiving means. Therefore, this compressive load does not act on the front and back surfaces of the intermediate material, and its depression can be prevented.

In addition, in the present invention, since the load acting on the outer material is also received by the flange, it is possible to suppress the concentration of the load at the place where the fixing pin is driven, and it is possible to prevent the outer material from being damaged. Further, in the present invention, the opposing outer members are attracted by bolts. Since this bolt penetrates the front and back surfaces of the intermediate material and has an appropriate length, elasto-plastic deformation is likely to occur due to a tensile load, impacts due to earthquakes and the like can be mitigated, and earthquake resistance is improved. When the present invention is introduced into a wooden building, the intermediate material corresponds to the floor material, the outer material corresponds to the wall material, the collapse of the floor material is prevented, and the load on the wall material is reduced by the flange.

As in the invention of claim 2, by using the pressure receiving shaft arranged in the opposite direction of the shaft as the pressure receiving means, the pressure receiving means is extremely simplified, so that the labor required for manufacturing parts and on-site construction is reduced. Can be reduced. Moreover, by integrating the shaft and the pressure receiving shaft and incorporating a flange in the middle part, a part of the indwelling tool functions as the pressure receiving shaft, so that the labor required for manufacturing parts and on-site construction can be further reduced.

As in the invention of claim 3, by using the pressure receiving pipe that contacts the vicinity of the outer edge of the flange as the pressure receiving means, the pressure receiving pipes are not concentrically aligned with the shaft. Therefore, for the intermediate material, it is not necessary to machine a hole or the like at a position concentrically aligned with the shaft, and a bolt or the like for another purpose can be arranged by using this portion. Due to this feature, members other than the outer material can be attached around the intermediate material, and a more complicated connecting structure can be realized.

In the perspective view which shows the morphological example of the connection structure by this invention, the intermediate material is sandwiched by the outer material arranged up and down, and these are integrated by the indwelling tool, the bolt and the like. After FIG. 1, it is a perspective view which shows the state which fixed the indwelling tool to the intermediate material. It is a perspective view which shows the state which integrated the intermediate material and the outer material of FIG. In the perspective view which shows the form example of the connection structure by this invention, the pressure receiving pipe is used as the pressure receiving means. After FIG. 4, it is a perspective view which shows the state which fixed the indwelling tool to the intermediate material. It is a perspective view which shows the state which integrated the intermediate material and the outer material of FIG. Although the pressure receiving shaft is used as the pressure receiving means, it is a perspective view which shows the specific example of the structure which separated the pressure receiving shaft from an indwelling tool. It is a perspective view which shows the case where the horizontal member is installed on both side surfaces of the intermediate member by using the connection structure of FIG. It is a perspective view which shows the vertical cross section of the connecting structure of FIG. 3, and the state which the bolt is stretched by the action of an excessive tensile load is drawn on the right side of the figure.

FIG. 1 shows a form example of a connecting structure according to the present invention, in which an intermediate member 51 is sandwiched between outer members 61 arranged one above the other, and these are integrated by indwelling tools 11, 12, bolts 35, and the like. The intermediate material 51 is assumed to be a floor material that develops in a flat shape, and the outer material 61 is assumed to be an upright wall material, and both are made of wood having an appropriate thickness such as CLT. As it is, it functions as a skeleton for buildings. As a matter of course, at the boundary between the intermediate material 51 and the outer material 61, both are in close contact with each other without a gap.

This connecting structure uses two upper and lower indwelling tools 11 and 12, a fixing pin 37 for fixing the indwelling tools 11 and 12 to the outer member 61, and a bolt 35 for pulling the upper and lower indwelling tools 11 and 12. There is. Among the indwelling tools 11 and 12, the disc-shaped flange 24 is integrated with the round bar-shaped shaft 23, and the pressure receiving shaft 31 projects on the opposite side of the shaft 23 with respect to the flange 24. The shaft 23 and the pressure receiving shaft 31 are composed of a single round bar, and the flange 24 is incorporated in the intermediate portion thereof, and the names are different with the flange 24 interposed therebetween. The pressure receiving shaft 31 functions as a pressure receiving means for preventing the two indwelling tools 11 and 12 from approaching each other.

The shaft 23 is provided with a side hole 27 penetrating the side peripheral surface thereof. Further, in the upper indwelling tool 11, simple round holes 25 are provided at two places near the outer edge of the flange 24. On the other hand, in the lower indwelling tool 12, the female screw 26 is formed at the same position, and the bolt 35 is inserted from the round hole 25 toward the female screw 26.

In order to insert the shaft 23 into the outer member 61, a shaft hole 63 extending in a direction orthogonal to the interface with the intermediate member 51 is machined. The shaft hole 63 has a bottom and has an inner diameter that can accommodate the shaft 23 without loosening. Further, in order to embed the flange 24 at the entrance of the shaft hole 63, a circular step 64 is machined concentrically with the shaft hole 63. The depth of the step 64 is aligned with the thickness of the flange 24, and both surfaces are lined up without unevenness. As a matter of course, the shaft hole 63 extends from the lower end surface of the upper outer member 61, and the shaft hole 63 extends from the upper end surface of the lower outer member 61.

The shaft 23 is inserted into the shaft hole 63 of the outer member 61, the flange 24 is embedded in the step 64, and then the fixing pin 37 is driven from the side surface of the outer member 61 toward the side hole 27 of the shaft 23. Since the fixing pin 37 penetrates the shaft 23 and becomes immobile due to friction with the outer member 61, the indwelling tools 11 and 12 are fixed to the outer member 61 via the fixing pin 37. A pin hole 67 intersecting the shaft hole 63 is pre-processed on the side surface of the outer member 61.

When the indwelling tools 11 and 12 are embedded in the outer member 61, only the pressure receiving shaft 31 protrudes from the outer member 61, and this is inserted into the shaft hole 53 processed into the intermediate member 51. The shaft hole 53 penetrates the front and back surfaces of the intermediate member 51, and the pressure receiving shafts 31 of the upper and lower indwelling tools 11 and 12 come into contact with each other inside the shaft hole 53 to realize vertical load transmission. The length of each pressure receiving shaft 31 is half the thickness of the intermediate material 51 so that there is no gap between the intermediate member 51 and the outer member 61 when the upper and lower pressure receiving shafts 31 come into contact with each other.

The bolt 35 is used to attract the upper and lower indwelling tools 11 and 12 that sandwich the intermediate member 51, and the intermediate member 51 is machined with a bolt hole 55 that penetrates the front and back surfaces in order to insert the shaft portion of the bolt 35. There is. Then, when the bolt 35 is inserted into the round hole 25 of the upper indwelling tool 11 and the tip portion thereof is screwed into the female screw 26 of the lower indwelling tool 12, the intermediate member 51 is sandwiched by the flange 24. Further, since the indwelling tools 11 and 12 are fixed to the outer member 61, the intermediate member 51 is inevitably sandwiched between the outer members 61. In order to accommodate the head and the tip of the bolt 35, a relief 66 is processed on the inner surface of the step 64.

In the actual construction, the pressure receiving shafts 31 of the indwelling tools 11 and 12 are first inserted into the intermediate member 51, and then the upper and lower indwelling tools 11 and 12 are pulled by the bolts 35 and fixed to the intermediate member 51. Next, the shaft 23 protruding from the intermediate member 51 is inserted into the outer member 61, and the fixing pin 37 is driven from the side surface of the outer member 61.

FIG. 2 shows a state in which the indwelling tools 11 and 12 are fixed to the intermediate member 51 after FIG. The pressure receiving shafts 31 of the individual indwelling tools 11 and 12 are inserted into the shaft holes 53 of the intermediate material 51, the individual flanges 24 are brought into contact with the intermediate material 51, and then the round holes 25 of the flange 24 mounted on the upper surface of the intermediate material 51. When the bolt 35 is inserted into, the tip of the bolt 35 is screwed into the female screw 26 of the lower flange 24, and the bolt 35 is tightened, the intermediate member 51 is sandwiched between the upper and lower flanges 24, and the indwelling tools 11 and 12 are attached to the intermediate member 51. It is fixed. At this time, the upper and lower pressure receiving shafts 31 come into contact with each other inside the intermediate member 51, and the compressive load in the vertical direction can be transmitted. After that, the shaft 23 protruding from the intermediate member 51 is inserted into the shaft hole 63 of the outer member 61.

FIG. 3 shows a state in which the intermediate member 51 and the outer member 61 of FIG. 1 are integrated. After FIG. 2, when the shaft 23 is inserted into the shaft hole 63 of the outer member 61 and the upper and lower outer members 61 are brought into contact with the intermediate member 51, the pin hole 67 of the outer member 61 and the side hole 27 of the shaft 23 are formed. When the fixing pins 37 are concentrically aligned and the fixing pins 37 are driven into them, the indwelling tools 11 and 12 are fixed to the outer member 61. As a result, the intermediate member 51 and the outer members 61 above and below the intermediate member 51 are integrated. In this state, the side surfaces (side surfaces on the right side of the drawing) of the intermediate member 51 and the outer member 61 are arranged in a wall shape without unevenness.

The upper and lower indwelling tools 11 and 12 are attracted by bolts 35, and the indwelling tools 11 and 12 are fixed to the outer material 61 by fixing pins 37, and the intermediate material 51 and the outer material 61 are in close contact with each other without a gap. There is. Therefore, it can withstand the tensile load in the vertical direction, and the rigidity of the connecting structure is ensured. Further, the compressive load in the vertical direction is transmitted to the indwelling tools 11 and 12 via the flange 24. Therefore, the downward load acting on the upper outer member 61 is transmitted to the indwelling tools 11 and 12 via the flange 24 (upper one), so that an excessive compressive load may act on the intermediate member 51. Absent.

Further, the lower outer member 61 receives the own weight of the intermediate member 51 as well as the own weight of the upper outer member 61, and a part of such a downward load is applied to the lower outer member via the flange 24. It is transmitted to the square material 61. Therefore, the concentration of the load around the fixing pin 37 is suppressed, and the outer member 61 is prevented from being damaged. Since the flange 24 has a corresponding area, the load is distributed over a wide range, and damage does not proceed from the contact point with the flange 24.

FIG. 4 shows an example of the form of the connected structure according to the present invention, and uses the pressure receiving pipe 33 as the pressure receiving means. The indwelling tools 13 and 14 here have no built-in pressure receiving means, have a simple structure in which a flange 24 is attached to one end of the shaft 23, and have side holes 27 on the side peripheral surface of the shaft 23. The flange 24 of the upper indwelling tool 13 is provided with a round hole 25, and the lower indwelling tool 14 is provided with a female screw 26 at the same position. Then, the shafts 23 of the individual indwelling tools 13 and 14 are inserted into the shaft holes 63 of the outer material 61, the flange 24 is further embedded in the step 64, and then the fixing pin 37 is driven in, so that the indwelling tools 13 and 14 are outward. It is fixed to the material 61.

The pressure receiving pipe 33 is embedded in the intermediate member 51, but is not concentric with the shaft 23, but is arranged concentrically with the bolt 35 that pulls the upper and lower flanges 24. Therefore, the intermediate material 51 is machined with a pipe hole 56 corresponding to the arrangement of the bolts 35. The pipe hole 56 has an inner diameter into which the pressure receiving pipe 33 can be inserted without loosening. In this figure, two bolts 35 are used, and the pressure receiving pipes 33 are also arranged at two places. Further, the length of the pressure receiving pipe 33 is aligned with the thickness of the intermediate material 51, and both ends of the pressure receiving pipe 33 come into contact with the flange 24 to prevent the upper and lower indwelling tools 13 and 14 from approaching each other.

FIG. 5 shows a state in which the indwelling tools 13 and 14 are fixed to the intermediate member 51 after FIG. First, the pressure receiving pipe 33 is inserted into the pipe hole 56 of the intermediate material 51, then the indwelling tools 13 and 14 are arranged above and below the intermediate material 51, and the individual flanges 24 are brought into contact with the intermediate material 51. After that, the bolt 35 is inserted into the round hole 25 of the flange 24 placed on the upper surface of the intermediate member 51, the tip thereof is screwed into the female screw 26 of the lower flange 24, and the bolt 35 is tightened. 51 is sandwiched, and the indwelling tools 13 and 14 are fixed to the intermediate member 51. At this time, the pressure receiving pipe 33 is also sandwiched between the upper and lower flanges 24, and the compressive load in the vertical direction can be transmitted.

FIG. 6 shows a state in which the intermediate member 51 and the outer member 61 of FIG. 4 are integrated. After FIG. 5, when the shafts 23 of the indwelling tools 13 and 14 are inserted into the shaft holes 63 of the outer material 61 and the upper and lower outer materials 61 are brought into contact with the intermediate material 51, the pin holes 67 and the shaft of the outer material 61 are brought into contact with each other. When the side holes 27 of the 23 are concentrically aligned and the fixing pin 37 is driven into the side holes 27, the indwelling tools 13 and 14 are fixed to the outer member 61. As a result, the intermediate member 51 and the outer members 61 above and below the intermediate member 51 are integrated. Then, the same effect as in FIG. 3 can be obtained by the pressure receiving pipe 33 and the flange 24.

FIG. 7 shows a specific example of a configuration in which the pressure receiving shaft 32 is used as the pressure receiving means, but the pressure receiving shaft 32 is separated from the indwelling tools 13 and 14. The indwelling tools 13 and 14 here have a simple configuration in which a flange 24 is attached to one end of the shaft 23, as in FIG. 4 above. Further, the pressure receiving shaft 32 in this figure has a simple round bar shape, the length thereof is aligned with the thickness of the intermediate member 51, and the pressure receiving shaft 32 is arranged concentrically with the shaft 23. Therefore, the intermediate material 51 is machined with a shaft hole 53 for inserting the pressure receiving shaft 32, and a bolt hole 55 is machined so as to surround the shaft hole 53.

When the pressure receiving shaft 32 is inserted into the intermediate member 51, both ends thereof come into contact with the centers of the flanges 24 of the indwelling tools 13 and 14, and the compressive load in the vertical direction can be transmitted. It should be noted that the points that the upper and lower indwelling tools 13 and 14 are pulled by the bolt 35 and the points that the indwelling tools 13 and 14 are fixed to the outer member 61 by the fixing pin 37 are the same as those in the previous drawings. As described above, if the pressure receiving shaft 32 comes into contact with the upper and lower indwelling tools 13 and 14, the specific configuration thereof can be freely determined.

FIG. 8 shows a case where the horizontal member 72 is installed on both side surfaces of the intermediate member 52 by using the connecting structure of FIG. In the connection structure of FIG. 6 above, the pressure receiving pipe 33 is arranged concentrically with the bolt 35 penetrating the intermediate member 51. Therefore, in the intermediate material 51, it is not necessary to machine a hole or the like at a position concentric with the shaft 23, and this portion can be used for another purpose. Therefore, in FIG. 8, this is used to pass the joining bolt 78. The joining bolt 78 is used to attach a pair of joining fittings 75 to the side surface of the intermediate member 52. A nut 79 is screwed into the tip of the joining bolt 78 penetrating the intermediate member 52, and the joining fitting 75 is attached to the intermediate member 52. Make them stick together.

The intermediate member 52 in this figure is not a plate member as in each of the previous drawings, but a bar member extending in the horizontal direction, and the outer member 62 is also a bar member standing upright. Further, the horizontal member 72 is a bar that extends horizontally, and the side surface of the intermediate member 52 is sandwiched between the two horizontal members 72. Therefore, looking down on the connecting structure in this figure, the intermediate member 52 and the horizontal member 72 are arranged in a cross shape. A slit 73 is processed at the end of the horizontal member 72, and after inserting the joint fitting 75 into the slit 73, when the fixing pin 77 is driven from the side surface of the horizontal member 72 toward the joint fitting 75, the horizontal member 72 is laterally formed. The frame member 72 is fixed to the joint fitting 75.

In order to insert the joining bolt 78, a horizontal hole 58 penetrating both sides is machined on the side surface of the intermediate member 52. The lateral hole 58 passes between the two pressure receiving pipes 33 and has no effect on the connecting structure composed of the indwelling tools 13, 14 and the like, and the pair of joining metal fittings 75 attracted by the joining bolt 78. Are arranged so as to sandwich the central axes of the indwelling tools 13 and 14. Therefore, the center lines of the outer member 62 and the horizontal member 72 are aligned, and both side surfaces can be arranged in the same plane.

In addition, the indwelling tools 13 and 14 in FIG. 8 have a simple configuration in which the flange 24 is attached to one end of the shaft 23 as in FIG. 6 above, but the side holes 27 penetrating the side peripheral surface of the shaft 23 are all the same. The directions of the adjacent side holes 27 are orthogonal to each other, rather than being aligned in the direction. Therefore, the fixing pins 37 to be driven into the outer member 62 are also arranged in two orthogonal directions.

FIG. 9 shows a vertical cross section of the connecting structure of FIG. 3, and a state in which the bolt 35 is stretched by an excessive tensile load is drawn on the right side of the figure. The upper and lower outer members 61 that sandwich the intermediate member 51 are attracted by the bolts 35, and the tensile load in the vertical direction is transmitted only by the bolts 35. When an excessive tensile load is actually applied, the indwelling tools 11 and 12 move integrally with the outer member 61 as shown on the right side of the figure, the distance between the upper and lower flanges 24 increases, and the shaft of the intermediate member 51 In the hole 53, the upper and lower pressure receiving shafts 31 are pulled apart, and at the same time, the bolt 35 is stretched. In this way, by receiving the tensile load in the vertical direction only by the bolt 35, the impact is alleviated by the elasto-plastic deformation, and the outer member 61 and the like are prevented from being damaged.

11 Indwelling tool (with round hole in flange and pressure receiving shaft)
12 Indwelling tool (with female screw on flange, with pressure receiving shaft)
13 Indwelling tool (with round hole in flange, no pressure receiving shaft)
14 Indwelling tool (with female screw on flange, no pressure receiving shaft)
23 Shaft 24 Flange 25 Round hole 26 Female screw 27 Side hole 31 Pressure receiving shaft (integrated with the shaft of the pressure receiving means / indwelling tool)
32 Pressure receiving shaft (separate from pressure receiving means / indwelling tool)
33 Pressure receiving pipe (pressure receiving means)
35 Bolt 37 Fixing pin 51 Intermediate material (floor material)
52 Intermediate material (bar material)
53 Shaft hole 55 Bolt hole 56 Pipe hole 58 Side hole 61 Outer material (wall material)
62 Outer material (bar material)
63 Shaft hole 64 Step 66 Relief 67 Pin hole 72 Horizontal material 73 Slit 75 Joining bracket 77 Fixing pin (to be driven into the horizontal material)
78 Joining bolt 79 Nut

Claims (3)

It is a connecting structure that integrates an intermediate material (51 or 52) and a pair of outer materials (61 or 62) that sandwich the front and back surfaces of the intermediate material (51 or 52).
An indwelling tool (11 to 14) provided with a flange (24) at one end of the shaft (23), a fixing pin (37) to be driven so as to penetrate the side peripheral surface of the shaft (23), and the intermediate material (51 or). A bolt (35) to be inserted so as to penetrate the front and back surfaces of 52), a rod-shaped pressure receiving means to be embedded in the intermediate material (51 or 52), and a rod-shaped pressure receiving means.
Using
The indwelling tools (11 to 14) are arranged so as to sandwich the intermediate material (51 or 52).
In order to embed the shaft (23) in each of the outer members (61 or 62), a shaft hole (63) orthogonal to the boundary surface with the intermediate member (51 or 52) is provided, and the shaft hole (63) is provided. The fixing pin (37) is driven from the surface of the outer material (61 or 62) toward the shaft (23).
A step (64) for embedding the flange (24) is provided on the boundary surface between the intermediate material (51 or 52) and the outer material (61 or 62).
The bolt (35) is inserted so as to attract the flange (24) facing the intermediate member (51 or 52).
The intermediate material (51 or 52) is embedded with the pressure receiving means connecting between the opposing flanges (24), and the facing indwelling tools (11 to 14) come into contact with the intermediate material (51 or 52) via the pressure receiving means. A connecting structure characterized in that a compressive load is transmitted. The pressure receiving means is a pressure receiving shaft (31 or 32) arranged in the opposite direction of the shaft (23) with respect to the flange (24), and the shaft (23) and the pressure receiving shaft (31 or 32) are The connected structure according to claim 1, characterized in that they are arranged concentrically. The pressure receiving means is a pressure receiving pipe (33) that comes into contact with the vicinity of the outer edge of the flange (24), and the shaft portion of the bolt (35) is inserted into the pressure receiving pipe (33). The connected structure according to claim 1.

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