JP6762621B2 - Joining tools, joining structures, and joining methods - Google Patents

Description

The present invention relates to joining tools, joining structures, and joining methods. More specifically, in the frame construction method in which the column material and the horizontal member are combined, the joining tool, the joining structure, and the joining capable of joining the members to be joined with higher strength than the joining structure using the conventional joining tool. Regarding the method.

Conventionally, in wooden construction, various joining tools such as metal plates have been used to join columns and horizontal members such as beams and girders. As such a joining tool, for example, a so-called feather plate bolt shown in Non-Patent Document 1 below has been proposed.

The gastropod bolt 9 shown in FIG. 17 is a fitting that can be attracted to each other via a bolt 91. A coach screw 93 is passed through a hole provided in the main body 92, and the coach screw 93 is passed through a pillar member 94 or a lateral member. By screwing it into the frame member 95, the framework (joint structure) composed of the combination of the column member 94 and the horizontal member 95 is fixed so as not to come off.

Wikipedia Feather board bolt Internet <URL: https://ja.wikipedia.org/wiki/%E7%BE%BD%E5%AD%90%E6%9D%BF%E3%83%9C%E3%83%AB% E3% 83% 88 ＞

By the way, in recent years, relatively large earthquakes have frequently occurred in Japan, and with the above-mentioned simple joints of about wing plate bolts 9, the joints are damaged during strong rolling, or the bolts 91 and coach screws 93 are used. There are cases where the surrounding soft tissue is exfoliated.

On the other hand, in the share of domestic detached houses and construction methods in FY2016, the ratio of "wooden frame construction method, etc." was 70.9%, and the ratio of "2x4 construction method" was 11.0%. That is, the ratio of wooden houses that combine both construction methods has reached 81.9%, and it is expected that many wooden houses will be built in the future unless there are special circumstances.

Under the current situation where it has been pointed out that seismic activity may continue to increase in the future, it has been desired to urgently develop new joints and joint structures with improved earthquake resistance in the frame construction method including wooden construction.

The present invention was devised in view of the above points, and in a frame construction method in which a column material and a horizontal member are combined, the strength between the members to be joined is higher than that of a joint structure using a conventional joining tool. It is an object of the present invention to provide a joining tool, a joining structure, and a joining method capable of joining.

In order to achieve the above object, the joint of the present invention is formed of a predetermined rigid material, has a bottom plate portion and a required number of side plate portions formed by rising from the bottom plate portion, and is formed in a direction facing the bottom plate portion. An opening surrounded by a side plate portion is formed, and a hollow structure main body having a joint portion to which a joining member can be joined is formed on the bottom plate portion and the outer surface of the side plate portion, and the inside of the main body is formed of a predetermined rigid material. It has a joint portion to which the joining member can be joined to the outer surface exposed to the outside in the accommodated state, and includes a support that can be fixed by abutting the bottom plate portion and / or the side plate portion.

Here, the joint of the present invention has a hollow structure box type (bottomed box type having an opening) by having a bottom plate portion and a side plate portion formed of a predetermined rigid material in the main body, and has a compressive force. , Shearing force, tensile force, etc. (hereinafter referred to as "external force") can make it difficult for deformation to occur. Further, as the joint portion of the main body, for example, via a fastener such as a bolt and a nut (hereinafter, simply referred to as a “tightening tool” in the example), the joint portion is formed on the outer surface of the bottom plate portion or the side plate portion. Joining members can be joined.

Examples of the "predetermined rigid material" include, but are not limited to, metal materials such as stainless steel, and materials such as synthetic resin, carbon fiber, and ceramics may be used, or a combination thereof may be used. It may be a composite material.

The number and shape of the "side plate portion" can be appropriately set according to the number of joining members to be joined and the joining direction. For example, the "side plate portion" may be composed of a plurality of faces of three, four, or more. The shape is not limited to this, and may be a shape such as a cylinder or an elliptical cylinder. Further, the "bottom plate portion" is composed of, for example, a shape such as a triangle, a quadrangle, or a polygonal shape, a cylindrical shape, or an elliptical cylinder shape, in accordance with the shape of the side plate portion.

Examples of the "joining member" include column members arranged above or below the joining tool, or horizontal members such as beams and girders arranged in the intersecting direction with respect to the column material, and further, the joining tool. It is also possible to join a panel material or the like to a part of. Further, examples of the joining member include, but are not limited to, wood such as logs and square timbers, but are made of materials such as metal materials, synthetic resin materials, bamboo materials, and stone materials, or a combination thereof. It may be a composite material.

When the joint of the present invention is provided with a support, the outer surface exposed to the outside in the state of being housed in the main body becomes a lid plate to the opening (opposite direction of the bottom plate), whereby the opening of the main body is formed. A joint can also be provided at the position where the is formed. Through this joint (for example, the above-mentioned connector), the joint member can be joined to the joint on the outer surface, and in the housed state in which the support is housed inside the main body, all the outer surfaces of the joiner (for example, the above-mentioned connector). The structure can be such that the joining member can be joined to the outer surface of the bottom plate portion, the outer surface of the side plate portion, and the outer surface of the support.

Further, the support can be abutted and fixed to the bottom plate portion, the side plate portion, or both of them. As a mode of this fixing, for example, a support portion provided on the back surface of the lid plate portion and which can be inserted into the main body may abut and support the bottom plate portion, the side plate portion, or both of them. However, the structure may be such that the peripheral edge of the support is fitted and supported in the notch formed at the opening edge of the main body, or a combination of the above-mentioned structures and the like.

The joint tool of the present invention, which has a three-dimensional structure in which the main body and the support are combined, has improved strength by integrating the main body and the support as compared with the conventional plate-shaped joint tool and the like. Therefore, for example, even if an external force due to an earthquake or the like is applied in a state where the joint member is arranged between two or more joint members such as a pillar material and a horizontal member, the joint tool is not easily deformed or damaged. , It is possible to continue to join the joining members with high strength.

Further, since the joining tool of the present invention has a structure having a hollow region inside, the weight is reduced as compared with the joining tool having a solid structure. Therefore, the joining tool of the present invention can reduce the long-term stress and the short-term stress generated in the column material in which the joining tool is arranged at the upper end.

In particular, with regard to short-term stress, in general, the heavier the weight of the upper part of a building, the greater the effect of short-term stress. Specifically, the shaking (short-term stress) during an earthquake tends to increase and damage tends to occur. However, since the joining tool of the present invention has sufficient rigidity and is lightweight, stress in various directions such as the horizontal direction generated by an external force such as an earthquake is applied to the arranged pillar material. Can be mitigated.

Furthermore, in the joining tool of the present invention, since the main body and the support can be separated, it is possible to attach the support to which the joining member is joined after joining the joining member to the main body at the time of construction, and the process is divided. Workability is good because it can be worked.

Further, the support has a lid plate portion and a support portion provided on the back surface of the lid plate portion and can be inserted into the main body, and the support portion is in contact with the inner surface of the main body in a state of being housed in the main body. In the case of a shape that is tangibly supported, the inserted support portion is abutted and supported on the inner surface of the main body, so that the deformation suppressing force of the joint can be improved. The "inner surface of the main body" may be the inner surface of either one of the bottom plate portion or the side plate portion constituting the main body, or may be the inner surface of both.

For example, when the outer surface of the lid plate is arranged so as to face upward, the deformation of the lid plate due to the vertical load applied from the joining member can be suppressed. In addition, in this arrangement mode, the support portion also serves as a reinforcing material against a horizontal load, and can suppress deformation of the main body, particularly the side plate. That is, the support portion can improve the deformation suppressing force of the entire joint.

Further, when the joint portion is composed of a connector insertion hole penetrating in the plate thickness direction, the connector can be inserted into the connector insertion hole, and the joint member and the joint can be connected by the connector. Can be joined. The "connector insertion hole" may be a hole having no processing on the inner surface, a hole in which a female screw is threaded, or the like.

Since the connector insertion holes are formed in each plate constituting the outer surface of the connector of the present invention, a connector such as a fastener can be inserted, and the outer surface of each plate can be inserted with the connector. The joining member can be joined to. The joining members may be joined to all of the bottom plate and the like, or to an outer surface selected from the outer surfaces of the bottom plate and the like.

For example, as a mode of use of the joining tool of the present invention, a pillar material standing up from the foundation of a building is joined to the outer surface of the bottom plate portion, a horizontal member is joined to the outer surface of the side plate portion, and the outer surface of the support is formed. An aspect of joining other pillar members arranged in the upward direction can be mentioned. On the other hand, as another usage mode, the pillar material is joined to the outer surface of the bottom plate portion and the outer surface of the support, respectively, the pillar material is joined to the outer surface of the bottom plate portion, and the horizontal member is joined to the outer surface of the side plate portion. Select a portion to join the joining members according to the application, such as a mode, or a mode in which a horizontal member is joined to each of the outer surfaces of at least two side plates when having a plurality of side plates. Can be done.

That is, the joining tool of the present invention has improved versatility, and can be applied to various uses and construction methods in one form, which is convenient.

Further, when the main body is formed with a fixture insertion hole through which the fixture for fixing the support can be inserted, the fixture can be inserted into the fixture insertion hole, and the fixture can be used in the main body. It is possible to suppress the detachment of the attached support.

By not separating the support from the main body, it is possible to prevent the joining structure using the joining tool of the present invention from being damaged even when an external force such as an earthquake is applied. Further, for example, even if the opening of the main body is used in a lateral or downward direction, the support can be prevented from coming off. That is, the joining tool of the present invention has further improved versatility, and can be applied to various uses and construction methods in one form, which is convenient.

In order to achieve the above object, the joint structure of the present invention is formed of a predetermined rigid material, includes a bottom plate portion and a required number of side plate portions formed by rising from the bottom plate portion, and side plates in a direction facing the bottom plate portion. An opening surrounded by portions is formed, and a hollow structure body including a joint portion to which a joining member can be joined to an outer surface selected from a bottom plate portion and a side plate portion, and a predetermined rigid material are formed. It has a support that can be accommodated inside the main body, includes a joint portion to which a joining member can be joined to an outer surface exposed to the outside in the accommodated state, and can be fixed by abutting on a bottom plate portion, a side plate portion, or both. It comprises a joint and a plurality of joint members joined via two or more joints selected from a main body joint or a support joint.

Here, in the joining structure of the present invention, the main body of the joining tool has a bottom plate portion and a side plate portion formed of a predetermined rigid material, so that the joint structure has a hollow structure and is less likely to be deformed by an external force. it can. Further, the main body can join the joining member to the outer surface of the bottom plate portion or the side plate portion via the joining portion.

In the joining structure of the present invention, since the joining tool has a support, the outer surface exposed to the outside in the state of being housed in the main body becomes a lid plate to the opening (opposite direction of the bottom plate), whereby the main body. A joint can also be provided at the position where the opening is formed. Through this joint (for example, the above-mentioned connector), the joint member can be joined to the joint on the outer surface of the support, and all of the joints are in the housed state in which the support is housed inside the main body. The structure can be such that the joining member can be joined to the outer surface (the outer surface of the bottom plate portion, the outer surface of the side plate portion, and the outer surface of the support).

Further, the support can be abutted and fixed to the bottom plate portion, the side plate portion, or both of them. As for this fixing mode, as described above, there is a mode in which the support is abutted and supported by a support portion that can be inserted into the main body.

Compared with the conventional plate-shaped joints and the like, the joints having a three-dimensional structure in which the main body and the support are combined have improved strength as the main body and the support are integrated. Therefore, for example, even if an external force due to an earthquake or the like is applied in a state where the joint member is arranged between two or more joint members such as a pillar material and a horizontal member, the joint tool is not easily deformed or damaged. , It is possible to continue to join the joining members with high strength.

Further, in the joining structure of the present invention, since the joining tool has a hollow region inside, the weight is reduced as compared with the joining tool having a solid structure. Therefore, the joining structure of the present invention can reduce the long-term stress and the short-term stress generated in the column material in which the joining tool is arranged at the upper end. In other words, since the joints have sufficient rigidity and are made lighter, it is possible to reduce stress in various directions such as the horizontal direction caused by an external force such as an earthquake in the arranged column material. it can.

Furthermore, in the joining structure of the present invention, since the main body of the joining tool and the support can be separated, it is possible to attach the supporting to which the joining member is joined after joining the joining member to the main body at the time of construction. Workability is good because the work can be divided into separate processes.

Then, in the joining structure of the present invention, a plurality of joining members are joined to two or more outer surfaces selected from the outer surface of the bottom plate portion of the joining tool, the outer surface of the side plate portion, or the outer surface of the support. It is possible to construct a frame such as columns and beams in a building.

As the "joint portion", for example, between the joint tool and the joint member, a screw member having a male screw formed on the shaft portion is provided on one of them, and a screw member can be screwed on the other. An embodiment in which a hole is provided can be mentioned, but the present invention is not limited to this, and various known connectors can be applied. The terms "predetermined rigid material", "side plate portion", "bottom plate portion", and "joining member" have the same meanings as those described above for the joining tool, and the description thereof will be omitted.

Further, when the joining tool is covered by the joining member, the appearance of the joining structure can be improved and the fire resistance can be improved.

For example, when the joining structure of the present invention is such that the joining tool is made of metal and the joining member is made of wood and is exposed to the indoor space, the joining tool is covered with the joining member, whereby the joining structure of the present invention is formed. Has an appearance as if it were made of only wood, and can provide the calmness, healing, or graceful appearance of wood in the installation space.

By the way, when the joining structure is composed of a metal joining tool and a wood joining member and the joining tool is exposed to the outer surface, in the event of a fire, even if the room is in a high temperature atmosphere, the flame does not hit directly. , The joining member gradually carbonizes from the surface and does not collapse immediately, but the joining tool becomes hot in a short time. The high temperature joint tool carbonizes the joint surface of the joining member to be in contact with the joint surface and its vicinity thereof, and the joint surface in the vicinity of the carbonized joint tool cannot support the load of the entire joint structure. As a result, damage in the vicinity of the joints occurred earlier than the total damage due to combustion of the joint members, which tended to lead to the collapse of the building.

However, according to the joining structure of the present invention, since the joining member is covered by the joining member, it is possible to prevent the joining tool from becoming hot even in the event of a fire, and the joining tool is faster than the damage caused by burning of the joining member. It is possible to prevent the nearby portion from being damaged.

"The joint tool is covered by the joint member" is a design in which the joint tool does not appear in appearance by the joint member. For example, the size of the joint tool may be set smaller than the joint surface of the joint member. The surface for joining the joining members is notched in an appropriate shape, and the edge surface of the notch is brought into close contact with each other so that an opening connected to the joint is not formed in the joint, and the joint is hidden by this notch or the like. You may.

When the joining member is a wooden column member or a horizontal member, the wooden frame construction method based on the joining structure of the present invention can be applied to the building. Then, for example, when the joint structure of the present invention is exposed to the indoor space, it is possible to provide the calmness and healing of wood, or the graceful appearance in the installation space.

Further, when the joint portion has a structure in which a connector insertion hole penetrating in the plate thickness direction is formed and the joint member and the joint are joined by the connector inserted through the connector insertion hole, the connector is used. The joining member can be joined to the outer surface of the bottom plate or the like by the connecting tool inserted through the insertion hole. The terms "connector insertion hole" and "connector" have the same meanings as those described above for the joint, and the description thereof will be omitted. Further, the joining members may be joined to all of the bottom plate portion and the like, or to two or more outer surfaces selected from the outer surfaces of the bottom plate portion and the like.

For example, as an aspect of the joining structure of the present invention, a pillar material standing up from the foundation of a building is joined to the outer surface of the bottom plate portion, a horizontal member is joined to the outer surface of the side plate portion, and the support is raised to the outer surface. An aspect of joining other pillar members arranged in the direction can be mentioned. On the other hand, as another usage mode, a pillar material is joined to the outer surface of the bottom plate portion and the support, a pillar material is joined to the outer surface of the bottom plate portion, and a horizontal member is joined to the outer surface of the side plate portion. Alternatively, when a plurality of side plate portions are provided, a portion for joining the joining members can be selected depending on the application, such as a mode in which a horizontal member is joined to each of the outer surfaces of at least two side plate portions. ..

That is, the joining structure of the present invention is a structure in which joining members can be selectively joined according to the application and construction method, and the versatility is improved, which is convenient.

Further, the connector is a screw member having a male screw formed on the shaft portion, and the joint member has a screw hole for screwing the screw member on the joint surface with the joint tool, and the mouth of the screw hole. If a peripheral edge having a predetermined width formed of a rigid material having a strength equal to or higher than that of the outer surface of the main body or the support is provided on the edge in a manner protruding from the joint surface, the peripheral edge provided may be used. The initial rigidity of the joint surface is improved, and deformation of the joint surface of the joint member can be suppressed when stress is generated in the direction intersecting the axial direction of the connecting member.

For example, as a problem when wood is used as a joining member, the shearing force (connection) at the joining surface (such as the end surface of the wood, which is relatively soft) with the joining tool in which the wood is generally weak to compression and has a predetermined rigidity. When stress occurs in the direction intersecting the axial direction of the tool), the joint tool may deform the joint surface of the joint member due to compressive stress, and it is difficult to increase the initial rigidity.

However, according to the joining structure of the present invention provided with the peripheral edge portion having the above-described configuration, the peripheral edge portion comes into contact with the outer surface of the joining tool, and thereby even when a shearing force is applied to the joining member. Since the outer surface of the hard joint tool receives stress at the peripheral edge portion without biting into the soft wood end surface, the rigidity of the portion is improved and the deformation of the joint surface can be suppressed.

In addition, when the joint portion of the joint structure of the present invention is formed by a screw member and a screw hole, higher pull-out strength can be obtained by improving the rigidity and suppressing deformation of the joint surface by the peripheral portion described above.

Examples of the "screw member having a male screw formed on the shaft portion" include, but are not limited to, bolts and screws, and may be shredded bolts and the like.

Examples of the "mode protruding from the joint surface" include, but are not limited to, a mode in which the joint member protrudes 0.5 mm from the joint surface (wood end surface, etc.), and the mode is not limited to this, and projects from about 0.1 mm to 1 mm. It may be an embodiment. If it is less than 0.1 mm, the effect of suppressing deformation of the joint surface is unlikely to appear, which is not preferable. Further, if it exceeds 1 mm, it is not preferable because it may be too far from the outer surface of the joint and stress concentration may occur in the vicinity of the peripheral edge portion.

"Formed with a rigid material having a strength equal to or higher than that of the main body or the support" means, for example, using the same constituent material as the main body or the support for the constituent material of the peripheral portion, but is limited to this. Instead, a constituent material harder than the main body or the support may be adopted as the constituent material of the peripheral portion. It should be noted that it is not excluded to use a constituent material that is slightly softer (less rigid) than the main body or the support as the constituent material of the peripheral portion, but it is not preferable in view of the above-mentioned effect of suppressing deformation of the joint surface. ..

In order to achieve the above object, the joining method of the present invention has a bottom plate portion and a side plate portion formed of a predetermined rigid material, and an opening surrounded by the side plate portions is formed in the direction opposite to the bottom plate portion. A joint having a hollow structure main body and a support having a structure including a lid plate portion which is formed of a predetermined rigid material and can be attached to the main body and which is arranged in the opposite direction of the bottom plate portion when attached to the main body. A plurality of joining members are joined to the tool via a joining portion to two or more outer surfaces selected from the outer surface of the bottom plate portion, the outer surface of the side plate portion, or the outer surface of the lid plate portion.

Here, in the joining method of the present invention, since the main body of the joining tool has a bottom plate portion and a side plate portion formed of a predetermined rigid material, it becomes a box shape having a hollow structure and is less likely to be deformed by an external force. it can. Further, the main body can join the joining member to the outer surface of the bottom plate portion or the side plate portion via the joining portion.

Then, in the joining method of the present invention, since the joining tool has a support, the outer surface exposed to the outside in the state of being attached to the main body becomes a lid plate to the opening (opposite direction of the bottom plate), whereby the main body. A joint can also be provided at the position where the opening is formed. The joint member can be joined to the joint portion on the outer surface of the support through this joint portion (for example, the above-mentioned connector), and when the support is attached to the main body, all the outer surfaces (bottom plate portion) of the joint tool can be joined. The structure can be such that the joining member can be joined to the outer surface, the outer surface of the side plate portion, and the outer surface of the support.

Further, the support can be attached to the main body, and as described above, the support can be abutted and supported by a support portion that can be inserted into the main body.

Compared with the conventional plate-shaped joints and the like, the joints having a three-dimensional structure in which the main body and the support are combined have improved strength as the main body and the support are integrated. Therefore, according to the joining method of the present invention, for example, even if an external force due to an earthquake or the like is applied in a state of being arranged between two or more joining members such as a pillar material and a horizontal member, the joining tool is It is not easily deformed or damaged, and the joining members can be continuously joined with high strength.

Further, in the joining structure of the present invention, since the joining tool has a hollow region inside, the weight is reduced as compared with the joining tool having a solid structure. Therefore, according to the joining method of the present invention, it is possible to reduce the long-term stress and the short-term stress generated in the column material in which the joining tool is arranged at the upper end. In other words, since the joints have sufficient rigidity and are made lighter, it is possible to reduce stress in various directions such as the horizontal direction caused by an external force such as an earthquake in the arranged column material. it can.

Furthermore, according to the joining method of the present invention, since the main body of the joining tool and the support can be separated, it is possible to attach the supporting to which the joining member is joined after joining the joining member to the main body at the time of construction. Workability is good because the work can be done in separate processes.

Then, according to the joining method of the present invention, a plurality of joining members are formed on two or more outer surfaces selected from the outer surface of the bottom plate portion of the joining tool, the outer surface of the side plate portion, or the outer surface of the support (lid plate portion). By joining, it is possible to form a frame such as columns and beams in a building.

The terms "predetermined rigid material", "side plate portion", "bottom plate portion", "joining member", and "joining portion" have the same meanings as those described above in the joining tool and joining structure. It is used, and the description is omitted.

According to the present invention, in a frame construction method in which a column member and a horizontal member are combined, a joining tool, a joining structure, which can join members to be joined with higher strength than a joining structure using a conventional joining tool, And a joining method can be provided.

An embodiment of the joining tool according to the present invention is shown, (a) is a perspective view seen from above, and (b) is an exploded perspective explanatory view. The main body of the joint shown in FIG. 1, (a) is a perspective view seen from above, and (b) is a perspective view seen from below. The main body is shown in FIG. 2, (a) is a plan view, and (b) is a sectional view taken along the line AA in FIG. 2 (b). The main body is shown in FIG. 2, where FIG. 2A is a sectional view taken along line BB in FIG. 2B, and FIG. 2B is a sectional view taken along line CC in FIG. 2B. It is a support of the joint shown in FIG. 1, (a) is a perspective view seen from above, and (b) is a perspective view seen from below. It is a front view explanatory view which shows the fixing structure of a main body and a support in the joint tool shown in FIG. 1, and also shows the attachment mode of a joint tool and a joint member. It is a perspective view which shows the bonding structure of this invention, (a) is a mode in which a bonding member is bonded to all 6 surfaces, (b) is a mode in which a bonding member is bonded to a total of 5 surfaces of 3 side surfaces and upper and lower surfaces. , (C) is an embodiment in which the joining member is joined to a total of three surfaces, two side surfaces and a lower surface. 7A shows a joint structure, FIG. 7A is an explanatory view of an exploded perspective view seen from above, and FIG. 7B is an explanatory view of an exploded perspective view seen from below. FIG. 7 is a perspective view of the joining member shown in FIG. 7A as viewed from the joining surface side. It is sectional drawing explanatory view which shows the structure of the joint member shown in FIG. It is a partially enlarged explanatory view of the joint portion of the lid plate portion and the joint member shown in FIG. It is explanatory drawing which shows the processing procedure of the joint surface side of the joint member shown in FIG. It is a flowchart which shows the formation procedure of the joint surface of a joint member. A modification of the present invention is shown, (a) is an embodiment in which the side plate portion of the joint is arranged in a triangular shape in a plan view (modification example 1), and (b) is a pentagon in a plan view in which the side plate portion of the joint is arranged in a pentagonal view. It is a certain aspect (modification example 2). A modification of the present invention is shown, and the arrangement of the side plate portion of the joint is circular in a plan view (modification example 3). A modification of the present invention is shown, which is another aspect of the joint surface of the joining member (modification example 4). The prior art described in Non-Patent Document 1 is shown, (a) is a perspective view of a wing plate bolt, and (b) is an explanatory view of a usage state of the wing plate bolt.

Embodiments of the present invention will be described in more detail with reference to FIGS. 1 to 16. The following description will be given in the order of [joining structure], [joining tool], [joining member], [joining method], and [processing method of the joining surface of the joining member]. In addition, the reference numerals in each figure are attached to the extent necessary to reduce complexity and facilitate understanding, and in some cases, only a part of the plurality of equivalents having the same reference numeral is attached. is there.

[Joined structure]
As shown in FIGS. 6 to 8, the joining structure 1 is composed of a joining tool 2 and a joining member 3. The joining tool 2 and the joining member 3 will be described in detail below.

[Joining tool]
See FIG. 1 (a). The joint 2 is a cube and has a chamfered corner, and includes a main body 21 and a support 23. The joint tool 2 is made of stainless steel, but may be made of another rigid material as described above. In that case, the "rigid material" is preferably a material having resistance to deformation and weather resistance.

The main body 21 will be described with reference to FIGS. 1 to 4 and 6. The main body 21 is composed of a bottom plate portion 211 and four side plate portions 212a, 212b, 212c, 212d (hereinafter, referred to as “212a to d” when collectively described) erected from the peripheral edge of the bottom plate portion 211. It is a hollow structure in which the bottom plate portion 211 is opened in the opposite direction (the portion is hereinafter referred to as "opening 215").

The bottom plate portions 211 and the side plate portions 212a to 212a to d have flat outer surfaces except for the chamfered corners.

Upper chamfered portions 216a, 216b, 216c, and 216d (hereinafter, referred to as "216a to d" when collectively described) are formed in the region along the opening 215 of the side plate portions 212a to d. More specifically, the side plate portion 212a has an upper chamfered portion 216a, the side plate portion 212b has an upper chamfered portion 216b, the side plate portion 212c has an upper chamfered portion 216c, and the side plate portion 212d has an upper chamfered portion 216d. Has been done.

Lower chamfered portions 217a, 217b, 217c, and 217d (hereinafter, referred to as "217a to d" when collectively described) are formed on the side portions of the side plate portions 212a to d along the bottom plate portions 211. More specifically, the side plate portion 212a has a lower chamfered portion 217a, the side plate portion 212b has a lower chamfered portion 217b, the side plate portion 212c has a lower chamfered portion 217c, and the side plate portion 212d has a lower chamfered portion 217d. Has been done.

Screw holes 218 for fixtures to which the fixture 5 described later can be attached are substantially in the center of the upper chamfered portions 216a to 216 in the width direction and substantially in the width direction of the lower chamfered portions 217a to 217 (the above-mentioned "fixing fixture insertion hole"). (Equivalent to) are formed one by one (eight in total) (see FIG. 2). The fixture 5 is a member that fixes the support 23 so as not to separate from the main body 21, and in the present embodiment, a set screw is adopted (see FIG. 6), but the present invention is not limited to this, and the support 5 is supported. As long as the body 23 can be fixed so as not to be detached, it may be a member such as various set screws.

The screw hole 218 for the fixture is a hole in which a female screw is screwed into the hole wall, penetrates from the outer surface to the inner surface of the side plate portions 212a to d, and is bored at a position overlapping the rib 214a or the like described later. (In particular, see FIGS. 2 (a) and 3 (a)). Further, each of the screw holes 218 for the fixture is bored in a direction orthogonal to the upper chamfered portions 216a to d or the lower chamfered portions 217a to d, and the direction of the holes provided in the upper chamfered portions 216a to d is , The direction of the holes provided in the lower chamfered portions 217a to 217 is inclined upward toward the center of the main body 21 (see particularly FIG. 4A). ..

The fixing screw holes 218 are used for joining the joining tool 2 and the joining member 3, and for example, between the joining tool 2 and another joining tool 2 at a diagonal position in the joining structure 1, if necessary. It is also possible to attach a connecting portion such as a reinforcing material such as a vertical brace, and it can be used for reinforcing the joint structure 1.

The corner where the side plate 212a and the side plate 212b are joined, the corner where the side plate 212b and the side plate 212c are joined, the corner where the side plate 212c and the side plate 212d are joined, and the side plate 212d and the side plate 212a are joined. A chamfered portion (reference numeral omitted) in the vertical direction is formed at each of the corner portions.

A spare hole 219 is formed in the substantially center of each vertical chamfered portion in the height direction, which penetrates the main body 21 in the inner and outer directions and has a female screw screwed into the hole wall. The spare hole 219 is not directly used for joining the joining tool 2 and the joining member 3, but is required, for example, between the joining tool 2 and another joining tool 2 at a diagonal position in the joining structure 1. Correspondingly, it is a hole to which a connecting portion such as a reinforcing material such as a horizontal brace can be attached, and can be used for reinforcing the joint structure 1 or the like. Further, it is also possible to support the support portion 232 of the support body 23, which will be described later, from an oblique direction by screwing in a long set screw or the like until the tip thereof hits the support portion 232.

The bottom plate portions 211 and the side plate portions 212a to 212a to d are formed with connector insertion holes 213 penetrating in the plate thickness direction. The connector insertion holes 213 are formed in the bottom plate portion 211 and the like, one at each angle direction (four locations in total). Each connector insertion hole 213 is a hole with no processing on the inner surface, and is formed to have a hole diameter slightly larger than the shaft portion of the connection bolt described later, so that there is rattling between the connector and the inserted shaft portion. I try not to come out.

In the internal space of the main body 21, ribs 214a, 214b, 214c, 214d along a part of the upper surface of the bottom plate portion 211 from the inner surface of each of the side plate portions 212a to d (hereinafter, "214a to d" will be described collectively. "Etc.) is formed. That is, one rib (four in total) is formed for each side plate portion of the rib formed in the internal space of the main body 21.

More specifically, the rib 214a has a substantially L-shape formed over the height direction of the inner surface of the side plate portion 214a (from the opening 215 to the upper surface of the bottom plate portion 211). Further, in the rib 214a, the end surface of the main body 21 facing the center side of the internal space hangs down in the vertical direction and is inclined downward from the middle toward the center of the bottom plate portion 211. Since the ribs 214b to d have the same configuration, individual description thereof will be omitted.

The support 23 will be described with reference to FIGS. 1, 4 and 6. The support 23 is provided on the inner surface of the lid plate portion 231 and the lid plate portion 231 and has a support portion 232 having a size that can be inserted into the internal space (hollow region) of the main body 21.

The lid plate portion 231 has a flat outer surface, has a size capable of closing the opening 215 of the main body 21 (that is, the direction facing the bottom plate portion 211), and is slightly larger than the bottom plate portion 211 and the side plate portions 212a to 212a to d. It is formed to have a thick thickness (about 1.5 to 1.6 times the thickness of the bottom plate and the like).

The lid plate portion 231 is substantially square in a plan view, and a first notch portion 233 having a shape recessed in the central direction of the lid plate portion is formed in a substantially central portion of each side, and each first notch portion 233 is formed. It is configured to be engageable with the upper ends of the ribs 214a to 214 formed in the opening 215 of the main body 21.

The lid plate portion 231 is formed with a connector insertion hole 234 penetrating in the plate thickness direction. The connector insertion holes 234 are formed in the lid plate portion 231 one by one (a total of four locations) from the center toward each angle direction. Further, the connector insertion hole 234 is arranged so that the axial direction of each hole and the support portion 232 do not overlap.

Each connector insertion hole 213 is a hole with no processing on the inner surface, and is formed to have a hole diameter slightly larger than the shaft portion of the connection bolt described later, so that there is no rattling with the inserted shaft portion. It is done like this.

The support portion 232 has a substantially cross-shaped column shape in which adjacent pieces are orthogonal to each other at the axial center portion. The support portion 232 is provided with a length such that the tip surface 235 abuts on the upper surface of the bottom plate portion 211 and a width at which each side end surface (side end surface 236) abuts on the end faces of the ribs 214a to d.

The support portion 232 has a second notch portion 237 and a third notch portion 238 formed so as to be inclined in the axial direction in each one portion.

The second notch portion 237 is formed in the vicinity of the portion where the lid plate portion 231 is fixed. The shape is cut out in the direction of the central axis of the support portion 232, and the deepest corner portion of the second cutout portion is formed at a substantially right angle.

The third notch 238 is formed at the axially tip portion of the support portion 232, and is inclined from the side end surface 236 toward the tip surface 235. That is, the third notch is provided in a shape that abuts and supports the inclined end surface (in other words, the inner surface of the main body 21) below the ribs 214a to d when the support portion 232 is inserted into the main body 21. Has been done.

In the present embodiment, as the above-mentioned "connector", a connection bolt 4 having a shaft portion 41 in which a male screw is threaded in the longitudinal direction and having a hexagonal screw head is used.

[Joining member]
The joining member 3 includes pillar members 31a and 31b (hereinafter, collectively referred to as “31a to b”) and horizontal members 32a, 32b, 32c and 32d (hereinafter collectively referred to as “31a to” b), which are polished logs made of solid wood. In the description, it is composed of "32a to d"), and by combining with the joint tool 2, the wooden frame construction method can be applied to the building. In the joining member 3, both end faces (that is, the end faces) form the joining surface 35, which serves as a joining portion with the joining tool 2. The joint surface 35 will be described in detail below.

Further, the pillar members 31a to 31b and the horizontal members 32a to d are solid wood polished logs, and a back split 33 having a predetermined depth and length is formed from the end surface of the wood to prevent cracking due to drying. ..

In addition, in FIG. 6, FIG. 7A, and FIG. 8, the joining member 3 is joined to all the surfaces of the joining tool 2, but as described above, the joining member 3 is the bottom plate of the joining tool 2. It can be joined to 2 to 5 outer surfaces desired and selected by the installer or the like from the outer surface of the portion 211, the outer surfaces of the side plate portions 212a to d, or the outer surface of the lid plate portion 231.

As a result, a column beam or the like can be configured with a desired joint structure, and as a configuration example, for example, as shown in FIG. 7B, the three side surfaces of the joint tool 2 and the upper and lower surfaces are formed on a total of five surfaces. Examples thereof include a mode in which the joining member 3 is joined, or a mode in which the joining member 3 is joined to two side surfaces and three lower surfaces of the joining tool 2 as shown in FIG. 7C.

More specifically, in FIG. 7B, the side plate portion 212a has a horizontal member 32a, the side plate portion 212b has a horizontal member 32b, the side plate portion 212c has a horizontal member 32c, and the lid plate portion 231 has a pillar material 31a. , The pillar member 31b is joined to the bottom plate portion 211, respectively. Further, in FIG. 7C, a horizontal member 32b is joined to the side plate portion 212b, a horizontal member 32c is joined to the side plate portion 212c, and a pillar member 31b is joined to the bottom plate portion 211.

The pillar members 31a to 31b and the horizontal members 32a to 32d have a cut surface 34 cut at a predetermined angle from the peripheral surface near the end surface to the end surface to be the joint surface. In the present embodiment, the cut surface 34 is formed with a total of four surfaces from four directions so that the joint surface becomes a square. In addition, each cut surface 34 is formed with one notch groove 341 along the inclination along the entire length of the cut surface 34 at substantially the center in the width direction (see FIG. 9).

Since the cut surface 34 is formed, when the column members 31a to 31a to b or the horizontal members 32a to d are joined to the joint tool 2, the adjacent cut surfaces of the column members 31a to b and the horizontal members 32a to d are adjacent to each other. When the 34s are substantially opposed to each other and the tip side is in close contact with each other, the vicinity of the joint surface can be made invisible (that is, the joint member 2 covers the joint tool 2) as in the joint joint method.

The notch groove 341 is formed in advance or after joining with the joining tool 2, and is hidden by joining the column members 31a to 31a to the horizontal members 32a to d, and the screw holes 218 and the spare holes 219 for the fixing tool of the joining tool 2 are hidden. The position and depth at which the hole can be used (that is, the fixture 5 can be screwed in), and the width is as narrow as possible so as not to spoil the aesthetic appearance of the pillar 31a or the like (slightly wider than the fixture 5). (See especially FIGS. 6, 8 and 9).

In order to prevent the joining member 2 from appearing in the appearance by the joining member 3, it is preferable that the diameter of the end of the joining member 3 is about 1.2 to 2 times the vertical and horizontal dimensions of the joining member 2. If it is less than 1.2 times, it is difficult for the joining member 2 to cover the joining tool 2, which is not preferable. On the other hand, if it exceeds twice, the difference in the area ratio of the joint surface between the joint tool 2 and the joint member 3 becomes large with respect to the entire joint surface of the joint member 3, and it becomes impossible to withstand the external force such as shearing force. This is because the joint strength may decrease.

The joint surface 35 will be described with reference to FIGS. 6, 8 and 9. In addition, although FIG. 9 shows the joint surface 35 of the horizontal member 32a, since the joint surfaces formed on both end faces of the column members 31a to 31a and the horizontal members 32a to d are generally the same structure. , Individual description is omitted. Since the horizontal member 32a is a natural object, there are some differences in thickness and the like, but the arrangement of the screw holes 36 for the connector for screwing the connection bolt 4 described later is the same.

The joint surface 35 is substantially square when viewed from the front, and the end portion of the notch groove 341 appears at substantially the center of each side. Further, in FIG. 9, the end portion of the back split 33 appears in the vertical direction from the upper side of the joint surface 35 to the center of the joint surface 35.

A screw hole 36 for a connector is formed on the joint surface 35 along the axial direction of the horizontal member 32a. One screw hole 36 for a connector is formed on the joint surface 35 toward each corner direction (four locations in total). The arrangement of the screw holes 36 for each connector overlaps with each connector insertion hole 213 formed in the side plate portion 212a of the connector 2 (see particularly FIGS. 6 and 9). ..

The screw hole 36 for a connector is composed of a long nut 361 fitted into a fixing hole 351 formed in a joint surface 35. The long nut 361 is attached so that its base end protrudes from the joint surface 35 by about 0.5 mm, and the protruding end face of the long nut 361 constitutes the above-mentioned "peripheral portion having a predetermined width" (hereinafter, , The end face of the long nut 361 appearing on the joint surface 35 is referred to as "peripheral portion 362"). The long nut 361 is made of stainless steel, and is a rigid material having the same strength as the stainless steel constituting the main body.

Further, the screw hole 36 for the connector is provided with a long shaft portion 363 having a male screw screwed on the peripheral surface on the opposite side to the peripheral edge portion 362. The long shaft portion 363 is inserted all the way into the fixing hole 351 and is fixed between the outer surface of the long shaft portion 363 and the inner surface of the fixing hole 351 with an adhesive P. The fixing hole 351 has a recessed portion 352 formed by spirally recessing the inner surface at least in the region through which the long shaft portion 363 is inserted with a pressing force that does not cut the wood fiber.

[Joining method]
The operation of the joining structure 1 and the joining method will be described with reference to FIGS. 6 to 8.
(1) With respect to the bottom plate portions 211 of the main body 21 of the joining tool 2 and the side plate portions 212a to 212a to four surfaces, the joining member 3 (specifically, the pillar material 31a is provided on the bottom plate portion 211 and the horizontal members 32a to d). The joint surfaces 35 of the side plate portions 212a to d) are brought into contact with each other.

(2) The joining tool 2 and the joining member 3 are joined via a connecting structure portion including the connecting bolt 4 and the screw hole 36 for the connecting tool. Specifically, the connection bolt 4 is inserted into the main body 21, the shaft portion 41 is inserted into the connector insertion hole 213, and the shaft portion 41 is taken out of the main body 21.

(3) Then, the shaft portion 41 exposed to the outside of the main body 21 is screwed into the screw hole 36 for the connector on the joint surface 35 of the joint member 3, and the outer surface of the bottom plate portion 211 of the main body 21 and the joint member 3 Tighten the connection bolt 4 until the joint surfaces 35 come into contact with each other. At this time, the peripheral edge portion 362 of the joint surface 35 hits the outer surface of the bottom plate portion 211 or the like and stops.

(4) In this way, all the outer surfaces of the bottom plate portions 211 and the side plate portions 212a to 212 of the main body 2 are joined to the pillar members 31a and the horizontal members 32a to d of the joining member 3.

(5) Next, the joining member 3 (specifically, the pillar member 31b) is joined to the outer surface of the lid plate portion 231 of the support 23 by the same method. Then, the support 23 to which the joining member 3 is joined inserts the support portion 232 from the opening 215 of the main body 21 to the depth of the internal space of the main body 21.

(6) In the inserted support portion 232, the front end surface 235 and the side end surface 236 are abutted and supported in the main body 21. More specifically, in the main body 21, the tip surface 235 of the support portion 232 comes into contact with the upper surface of the bottom plate portion 211, and the side end surfaces 236 and the third notch portion of the support portion 232 are brought into contact with the end faces of the ribs 214a to d in the main body 21. 238 comes into contact.

(7) Further, when the support portion 232 is inserted all the way into the main body 21, the upper ends of the ribs 214a to d on the edge of the opening 215 and the first notch 233 on the periphery of the lid plate portion 231 are fitted. ..

(8) After attaching the main body 21 and the support 23, the fixing tool 5 is screwed into each of the fixing tool screw holes 218 of the main body 21 and tightened to the back. As a result, the tip of each fixture 5 comes into contact with the second notch 237 or the third notch 238 of the support 232, and the support 23 is fixed so as not to separate from the main body 21. In addition, by pressing with the fixture 5, there is no rattling between the main body 21 and the support portion 232.

[Processing method for joint surfaces of joint members]
The method for processing the joint surface of the joint member includes "fixing hole forming step S1" and "joining portion forming step S2". Since the fixing hole forming step S1 includes the “accommodating portion forming step”, it is hereinafter referred to as “fixing hole forming step S1 / accommodating portion forming step”. Each step will be described in detail below, mainly with reference to FIGS. 10 to 13.

(Fixing hole forming step S1 / accommodating part forming step)
The fixing hole forming step S1 / accommodating portion forming step includes a basic hole forming step S1-1 and a recess forming step S1-2 for forming the fixing hole 351 (see FIG. 13).

<Basic hole forming step S1-1>
In the foundation hole forming step S1-1, a foundation hole 353 having a predetermined depth is formed on the joining surface 35 of the joining member 3 in substantially the same direction as the fiber direction D1 of the wood. Then, the foundation hole portion 353 forms an accommodating portion 354 with an expanded hole diameter in a portion closer to the joint surface 35 (see FIGS. 12A and 13).

The foundation hole portion 353 and the accommodating portion 354 are drilled by a hammer drill 6 provided with a drill blade 61. The drill blade 61 is a combination of a cylindrical large-diameter drill blade 612 having an insertion hole (not shown) in the long axis direction and a small-diameter drill drill 611. Then, the drill blade 61 is made to insert the small-diameter drill drill 611 into the insertion hole of the large-diameter drill blade 612, and the large-diameter drill blade 612 is fixed to the base end side (hammer drill 6 side) of the small-diameter drill drill 611.

The large-diameter drill bit 612 and the small-diameter drill drill 611 are removable. First, the base hole portion 353 is formed only by the small-diameter drill drill 611, and then the large-diameter drill blade 612 is attached to form the accommodating portion 354. Either a usage method or a usage method in which the foundation hole portion 353 and the accommodating portion 354 are formed at the same time with the large-diameter drill blade 612 and the small-diameter drill drill 611 fixed integrally can be selected.

<Dent formation step S1-2>
In the recessed portion forming step S1-2 shown in FIG. 13, the fixing hole forming tool 7 is pushed into the base hole forming tool 7 while rotating forward, and the fixing hole forming tool 7 is rotated in the reverse direction to be pulled out, thereby pulling out the inner surface of the base hole portion 353. Is formed in a spirally recessed portion 352. The recessed portion 352 is formed by a hammer drill 6 to which the fixing hole forming tool 7 is attached (see FIG. 12B). After removing the fixing hole forming tool 7, the inside of the fixing hole 351 is cleaned with a metal roll brush (not shown) or the like, and compressed air is blown into the fixing hole 351 with an air gun (not shown) to remove wood chips. To do.

As shown in FIG. 12B, the above-mentioned fixing hole forming tool 7 includes a shaft portion 71 and a spiral ridge portion 72 formed on the peripheral surface of the shaft portion 71 at a predetermined pitch. The ridge portion 72 has a mountain-shaped cross section and a non-sharp tip, which is smoothly formed in the ridgeline direction. In addition, although the tip is flattened and chamfered as a "non-sharp shape", for example, the tip may be rounded.

By using the fixing hole forming tool 7, unlike the case where the lug screw is screwed into the wood without the foundation hole, the pressing force that does not cut the fiber of the joining member 3 is applied to spirally on the inner surface of the foundation hole 353. A fixing hole 351 having a recessed recessed portion 352 can be formed. Since the tip of the ridge 72 is formed in a non-sharp and smooth shape, the tip of the ridge 72 slides along the wood fiber when biting into the above-mentioned wood structure, and the wood fiber Cutting is less likely to occur.

The fixing hole forming tool 7 has a shaft portion 71 having a length of 380 mm, a ridge portion 72 having a pitch of 11 mm, a peak side having a diameter of 22 mm, and a valley side having a diameter of 16 mm, but the dimensions are not limited to this. It can be appropriately changed according to the size of the joining member and the joining tool. The pitch of the ridges 72 is preferably in the range of 10 mm to 12 mm.

Further, in the shaft portion, the ratio of the diameter on the mountain side (protruding portion) to the diameter on the valley side is preferably in the range of 12: 9 to 10: 7, and more preferably 11: 8. The reason for this is that if the difference between the diameter on the mountain side and the diameter on the valley side is large, the bite of the ridge portion into the inner surface of the foundation hole becomes large and the wood fiber is cut, which is not preferable. On the other hand, if the difference is small. This is not preferable because the anchor effect is reduced.

According to the fixing hole forming step S1 / accommodating portion forming step described above, the fixing hole 351 can be formed on the joint surface 35, and in addition, the base hole portion 353 of the fixing hole 351 is set in the fiber direction D1 of the wood. Since it is formed along the line, the highest tensile strength can be obtained after processing.

Further, in the fixing hole 351, the foundation hole portion 353 and the recessed portion 352 formed in the direction intersecting the wood fiber direction communicate with each other, and the adhesive that has entered the recessed portion 352 is cured, so that the anchor effect described later is obtained. Occurs.

In addition, since the recessed portion 352 is formed by the above-mentioned pressing force, the wood structure around the fixing hole 351 is not cracked or is less likely to be cracked. Furthermore, the wood structure is compressed and becomes denser, improving the strength of the recessed portion 352.

In the present embodiment, the hammer drill 6 provided with the above-mentioned drill blade 61 is used, but the present invention is not limited to this, and for example, other known equipment such as a stepped drill blade is used to form a foundation. If the foundation hole portion 353 and the accommodating portion 354 can be formed, such as performing the forming step of the hole portion and the accommodating portion at the same time, the use of other equipment or the step may be adopted. The same applies to the equipment for pushing the fixing hole forming tool 2.

(Joint formation step S2)
The joint forming step S2 includes an adhesive injection step S2-1, a semimajor axis insertion step S2-2, and an adhesive curing step S2-3 (see FIG. 13). In FIG. 13, the flow of the adhesive injection step S2-1 and the semimajor axis insertion step S2-2 is described, but each step may come first, and the order of each step is changed. May be good.

<Adhesive injection step S2-1>
The adhesive injection step S2-1 shown in FIG. 13 is performed by injecting a predetermined amount of the adhesive P into the fixing hole 10, and thereby, the preparation for fixing the long shaft portion 363, which will be described later, to the fixing hole 351. Is ready. The adhesive P is preferably injected into the depth of the fixing hole 351 by using a caulking gun 8 or the like having a nozzle 81 having a length extending to the depth of the fixing hole 351 (FIG. 12 (c)). reference).

As the adhesive P, one that uses an epoxy resin as a main component and is mixed with a curing agent (has the effect of penetrating into wood and curing the penetrating portion) is used, but other known adhesives may be used. As for the "predetermined amount", when the size of the fixing hole 351 is used, the amount of the adhesive P to be injected is preferably about 100 cc. According to the inventor's knowledge, this amount is sufficient to reach the gap between the inserted long shaft portion 363 and the fixing hole 351 and does not leak a large amount from the mouth of the fixing hole 351.

<Semi-major axis insertion step S2-2>
The long shaft portion insertion step S2-2 shown in FIG. 13 is performed by inserting the long shaft portion 363 into the fixing hole 351 and thereby fixing the long nut 361 and the long shaft portion 363 to the joining member 3. Ready. As a matter of course, the long shaft portion 363 has a smaller diameter than the fixing hole 351, and the insertion of the long shaft portion 363 creates a gap for filling the adhesive P between the long shaft portion 363 and the inner surface of the fixing hole 351. (See FIGS. 10 and 11).

The screw hole 36 for the connector is composed of a long nut 361, and a long shaft portion 363 is screwed to the tip of the long nut 361 to be continuously provided. A nut (reference numeral omitted) is screwed to the tip side of the long nut 361, and each nut is fastened by the double nut method so as not to loosen.

The long nut 361 and the long shaft portion 363 that are connected in series are inserted and attached in the following procedure. Further, according to the work according to the following procedure, the adhesive P is evenly filled in the screw uneven portion and the recessed portion 352 of the long shaft portion 363 by the centrifugal force due to the rotation.

(1) Attach the long nut 361 to an impact wrench, etc., and while rotating it at high speed, slowly push it in for about 30 to 60 seconds, and stop it once when the base end of the long nut 361 protrudes about 10 mm from the joint surface 35.
(2) Using a height adjusting plate (not shown), push in the long nut 361 until the base end of the long nut 361 protrudes 0.5 mm from the joint surface 35.

At this time, the end face of the protruding long nut 361 constitutes the peripheral edge portion 362. The height adjustment plate has a thickness of 0.5 mm (that is, the same thickness as the desired protrusion height) and is provided with a required number of holes, and each hole is formed to have a diameter slightly larger than that of the long nut 361. It was done.

<Adhesive curing step S2-3>
In the adhesive curing step S2-3 shown in FIG. 13, the adhesive P filled between the inner surface of the fixing hole 351 and the outer surface of the long shaft portion 363 and the long nut 361 is cured after a lapse of a predetermined time ( It is done by curing).

As a result, the long shaft portion 363 and the long nut 361 are fixed to the fixing hole 10, and in particular, the adhesive P that has entered the spiral recessed portion 352 and hardened exerts an anchor effect on the wood structure around the fixing hole 351. be able to. In addition, the unevenness of the screw formed on the peripheral surface of the long shaft portion 363 exerts an anchor effect with the cured adhesive P, and the pull-out strength is further improved (see FIGS. 10 and 11). Then, the screw hole 36 for the connector can be provided on the joint surface 35 by the inserted long nut 361, and the peripheral edge portion 362 can be provided around the screw hole 36 for the connector.

As described above, according to the joint forming step S2, the joint surface 35 having the screw hole 3 for the connector can be formed by each step.

As described above, the wood end surface is generally vulnerable to compression, and the metal joint may deform the end surface due to the generated compressive stress, making it difficult to increase the initial rigidity. However, since the joining member 3 has the above-mentioned peripheral edge portion 362 that protrudes slightly higher than the joining surface 35, the portion that comes into contact with each outer surface of the joining tool 2 at the joining portion between the joining tool 2 and the joining member 2 , Not the joint surface 35, but the peripheral edge portion 362.

As a result, when an external force (shearing force) in the direction D2 intersecting the long axis direction of the wood as shown in FIG. 11 is applied, the outer surface of the hard joint 2 bites into the soft end surface W1. Since the stress is received on the surface of the joint tool 2 without any stress, the rigidity of the portion is improved, the deformation of the joint surface 35 is suppressed, and a higher pull-out strength can be obtained.

In the above-mentioned long shaft portion 363, a male screw is formed in the longitudinal direction of the peripheral surface, but a large number of protrusions are provided radially from the long shaft portion, or a large number of depressions are provided in the long shaft portion. As described above, any aspect such as that in which irregularities are formed on the peripheral surface of the long shaft portion is sufficient, and a smooth shape having no irregularities on the peripheral surface of the surface of the long shaft portion is excluded. is not. Further, the above-mentioned long nut 361 is fastened so as not to be loosened by the double nut method. For example, a long nut having a screw hole with a resin for preventing loosening or a flange-shaped diameter at the base end side is further expanded. Any nut or the like that does not disconnect the long shaft portion 363 and the long nut 361 may be used.

By having the above structure, the joint structure 1 has the following excellent effects. That is, since the joint structure 1 has a bottom plate portion and a side plate portion constituting the main body 21 of the joint tool 2 and has a bottomed box shape having a hollow region inside, an external force transmitted through the joint member 3 is transmitted. Deformation due to Further, by attaching the support 23 to the main body 21, it becomes a three-dimensional structure joining tool 2 in which the plate body is arranged on the entire surface, and compared with the conventional plate-shaped joining tool and the like, the bottom plate portion 211 and the side plate portions 212a to 212a to d. And the lid plate portion 231 are integrated to improve the rigidity.

In addition, the support 23 has a support portion 232 that can be inserted into the main body 21, and the support portion 232 in the inserted state has a structure in which the support portions 232 are abutted and supported by the ribs 214a to d in the main body 23. The rear ribs 214a to 232 and the support portion 232 form a cross-shaped strut structure in the main body 21, support the side plate portions 212a to d from the plate surface and the crossing direction, and between the bottom plate portion 211 and the lid plate portion 231. Can support.

Further, when the support 23 is arranged so that the outer surface faces upward, the deformation of the support 23 due to the vertical load applied from the joining member 3 can be suppressed. In addition, in this arrangement mode, the support portion 232 also serves as a reinforcing material against a horizontal load, and can suppress deformation of the main body 23, particularly the side plate portions 212a to 212a to d. That is, the support portion 232 can improve the deformation suppressing force of the entire joint tool 2.

As a result, in the joining structure 1, even if an external force due to an earthquake or the like is applied in a state where the joining tool 2 is arranged between two or more joining members 3 of the column members 31a to 31b and the horizontal members 32a to d. , The joining tool 2 is not easily deformed or damaged, and the joining members 3 can be continuously joined with high strength.

Since the joining tool 2 can be separated into the main body 21 and the support 23 in the joining structure 1, the support 23 to which the joining member 3 is joined is formed after the joining work of the main body 21 and the joining member 3 at the time of construction. Workability is good because it can be attached to the main body 21 and the work can be performed separately.

Further, since the joining tool 2 has a structure having a hollow region inside, the weight is reduced as compared with the joining tool having a solid structure. Therefore, the joining structure 1 can reduce the long-term stress and the short-term stress generated in the column member 31a or the like in which the joining tool 2 is arranged at the middle or the upper end. That is, since the joining tool 2 has sufficient rigidity and is made lighter, stress in various directions such as the horizontal direction generated by an external force such as an earthquake is reduced in the arranged column member 31a or the like. can do.

Furthermore, in the joining structure 1, a plurality of joining members 3 are formed on two or more outer surfaces selected from the outer surface of the bottom plate portion 211 of the joining tool 2, the outer surface of the side plate portions 212a to d, or the outer surface of the lid plate portion 231. By joining, it is possible to form a frame such as columns and beams in a building.

Further, in the joint structure 1, the connection structure portion is formed from the connection bolt 4, the connection tool insertion hole 213 formed in the bottom plate portion 211, the side plate portions 212a to d, and the connection tool insertion hole 234 formed in the lid plate portion 231. Due to its simple structure, productivity is good and workability is good even at the time of installation. Further, since the structure is such that the attachment position of the joining member 3 can be selectively joined according to the application and the construction method, it is highly versatile and convenient.

Then, in the joint structure 1, the fixture screw hole 218 formed in the main body 21 and the fixture 5 screwed into the fixture screw hole 218 suppress the detachment of the support 23 attached to the main body 21. Then, the rattling that occurs between the main body 21 and the support portion 232 can be suppressed. By having such a fixed structure, it can be expected to have an effect of suppressing damage when an external force due to an earthquake or the like is applied, and in addition, since it can be used regardless of the orientation of the opening 215 of the main body 23, it can be used in various forms. It is highly versatile and convenient because it can be used for various purposes and construction methods.

Further, in the joint structure 1, the joint member 3 is a polished log made of solid wood, and the wooden frame construction method by the joint structure 1 can be applied to a building. In the joining structure 1, since the joining tool 2 is covered with the joining member 3 which is a polished log made of solid wood, the joining tool 2 has an appearance even if the joining structure 1 is exposed to the indoor space. It does not appear and looks as if it was assembled only with logs, and it is possible to provide the calmness and healing of wood, or the elegant appearance in the installation space.

Furthermore, in the joining structure 1, the joining tool 2 is covered with a joining member 3 which is a polished log made of solid wood, so that the joining tool 2 is prevented from becoming hot even in the event of a fire, and the joining member 3 is prevented from becoming hot. It is possible to prevent the vicinity portion of the joint tool 2 from being damaged earlier than the damage due to combustion, that is, the fire resistance performance is improved as compared with the conventional wooden frame construction method using joint fittings.

In addition, the joining structure 1 is joined when a peripheral portion 362 is provided on the joining surface 35 of the joining member 3 and a stress such as a shearing force is generated in a direction intersecting the axial direction of the connecting member 3. The peripheral edge portion 362 comes into contact with the outer surface of the tool 2 and receives stress, so that the initial rigidity of the joint surface 35 can be improved and the deformation of the joint surface 35 can be suppressed.

[Modification example]
With reference to FIGS. 14 and 15, modifications 1 to 4 of the constituent members of the joint structure 1 will be described.
Since the joining tools 2a to 2c shown in the modified examples 1 to 3 are almost the same as the joining tools 2 described above except for the structure of the side plate portion, the description of the overlapping structure and the action and effect will be omitted. Further, with respect to the joint surface 35a shown in the modified example 4, the description of the configuration and the action and effect overlapping with the joint surface 35 will be omitted.

(Modification example 1)
The joining tool 2a shown in FIG. 14A is a modification of the above-mentioned joining tool 2, in which the side plate portion (reference numeral omitted) is composed of three surfaces, and the bottom plate portion (reference numeral omitted) and the lid plate portion (reference numeral omitted). Is a substantially equilateral triangle. The joining tool 2a can join the pillar members 31a and 31b in the vertical direction and can join the horizontal members 32a, 32b and 32c to the sides.

(Modification 2)
The joining tool 2b shown in FIG. 14B is a modification of the above-mentioned joining tool 2, and the side plate portion (reference numeral omitted) is composed of five surfaces, and the bottom plate portion (reference numeral omitted) and the lid plate portion (reference numeral omitted). Is a mode in which is a substantially regular pentagon. The joining tool 2b can join the pillar members 31a and 31b in the vertical direction, and can join the horizontal members 32a, 32b, 32c, 32d and 32e to the sides.

Both the joint tool 2a and the joint tool 2b can form a frame such as a column beam in a building as a wooden frame construction method, but when the joint structure is exposed to the indoor space, for example, the joint tool 2a or the joint By arranging the joint structure using the tool 2b in a conspicuous place such as the center of the room, it is possible to provide an elegant appearance that is different from ordinary columns and beams.

(Modification 3)
The joining tool 2c shown in FIG. 15 is a modification of the above-mentioned joining tool 2, and is composed of a cylindrical side plate portion (reference numeral omitted), and a bottom plate portion (reference numeral omitted) and a lid plate portion (reference numeral omitted) are substantially circular. Is the embodiment. The joining tool 2c can join the pillar members 31a and 31b in the vertical direction, and can join the horizontal members 32a, 32b, 32c and 32d to the sides. Since the side plate portion of the joint tool 2c is cylindrical, the arrangement, spacing, and number of the connector insertion holes 213 formed in the side plate portion can be set relatively freely, and the degree of freedom in design is high.

(Modification example 4)
The joint surface 35a shown in FIG. 16 is a modification of the above-mentioned joint surface 35. The joint surface 35a is provided with a plurality of connecting shafts 37 along the axial direction of the horizontal member 32a. Male threads are threaded on the connecting shaft 37 in the longitudinal direction of the peripheral surface, and one male screw is formed on the joint surface 35a from the center toward each angular direction (four locations in total). The arrangement of the connecting shafts 37 overlaps with the connecting tool insertion holes 213 formed in the side plate portion 212a of the joining tool 2 so that they can be inserted.

The connecting shaft 37 is composed of a shredded bolt that is inserted into a fixing hole 351a formed in the joint surface 35a and fixed between the peripheral surface and the inner surface of the fixing hole 351a with an adhesive P. The recessed portion 352 described above is formed on the inner surface of the fixing hole 351a.

According to the joint surface 35a, since the connecting shaft 37 is merely a shredded bolt, it is possible to form a joint surface having an inexpensive and simple structure. Further, in the joint structure 1 using the joint member 3 having the joint surface 35a, the joint shaft 37 is passed through the connector insertion holes 213 and 234 provided in the joint tool 2, and the nut 42 is attached from the inner surface side of the joint tool 2. It can be made into a simple structure that can be joined simply by tightening.

The terms and expressions used in the present specification and the claims are for explanatory purposes only and are not limited in any way. The features described in the present specification and the claims and the features thereof and the like thereof. There is no intention to exclude terms or expressions equivalent to some. In addition, it goes without saying that various modifications are possible within the scope of the technical idea of the present invention.

1 Joining structure 2 Joining tool 21 Main body 211 Bottom plate part 212a, 212b, 212c, 212d Side plate part 213 Connecting tool Insertion hole 214a, 214b, 214c, 214d Rib 215 Opening 216a, 216b, 216c, 216d Upper chamfered part 217a, 217b, 217c, 217d Lower chamfered part 218 Screw hole for fixture 219 Spare hole 23 Support body 231 Lid plate part 232 Support part 233 First notch 234 Connection tool insertion hole 235 Tip surface 236 Side end surface 237 Second notch 238 Third notch Part 3 Joint member 31a, 31b Pillar material 32a, 32b, 32c, 32d, 32e Horizontal member 33 Back split 34 Cut surface 341 Notch groove 35, 35a Joint surface 351, 351a Fixing hole 352 Recessed part 353 Basic hole part 354 Accommodating part 36 Screw holes for fittings 361 Long nuts 362 Peripherals 363 Long shafts 37 Connecting shafts 4 Connecting bolts 41 Shafts 42 Nuts 5 Fixtures 6 Hammer drills 61 Drill blades 611 Small diameter drill drills 612 Large diameter drill blades 7 Fixing hole forming tools 71 Shaft 72 Protruding 8 Coking gun 81 Nozzle D1 Wood fiber direction D2 Direction intersecting the long axis direction of wood P Adhesive S1 Fixing hole forming process S1-1 Basic hole forming step S1-2 Depressing part forming step S2 Joint forming process S2-1 Adhesive injection step S2-2 Long shaft part insertion step S2-3 Adhesive hardening step 9 Feather plate bolt 91 Bolt 92 Main body 93 Coach screw 94 Pillar material 95 Horizontal member

Claims (8)

It is formed of a predetermined rigid material, has a bottom plate portion, and a required number of side plate portions integrally erected from the bottom plate portion, and an opening surrounded by the side plate portions is formed in a direction facing the bottom plate portion. with the said bottom plate portion and the side plate portion bonding portion bondable bonding member to the outer surface is provided with, on the side plate portion is inclined downward from the outer surface toward the center, and through the fastener can be inserted in A bottomed box-shaped hollow structure body with a fixture insertion hole ,
A lid plate portion formed of a predetermined rigid material, capable of closing the opening of the main body, and provided with a joint portion capable of joining a joining member on the outer surface, and a back surface of the outer surface of the lid plate portion. It has a shape that is provided in a portion thereof and can be accommodated in the main body, and is supported by abutting against the inner surface of the main body in a state of being accommodated in the main body, and is inserted through the fixture insertion hole. comprising a support tip portion of the fixture to have a support part, which can abut inclined surface is formed, a,
In the housed state in which the support portion is housed in the main body, the tip portion of the fixing tool to be inserted into the fixing tool insertion hole abuts on the inclined surface, thereby suppressing the support from being detached from the main body. A joint that is a possible structure . The joint according to claim 1, wherein the joint is formed of a connector insertion hole penetrating in the plate thickness direction . An opening is formed which is formed of a predetermined rigid material, includes a bottom plate portion and a required number of side plate portions integrally erected from the bottom plate portion, and is surrounded by the side plate portions in a direction facing the bottom plate portion. At the same time, a joint portion capable of joining the joining member is provided on the outer surface of the bottom plate portion and the side plate portion, and the side plate portion is fixed by inclining downward from the outer surface toward the center and penetrating the fixture so as to be insertable. A bottomed box-shaped hollow structure body in which a tool insertion hole is formed, and a joint portion formed of a predetermined rigid material and capable of closing the opening of the main body and joining a joining member to the outer surface. Is provided on the lid plate portion provided with the lid plate portion and the portion of the lid plate portion that is behind the outer surface of the lid plate portion so that the lid plate portion can be accommodated in the main body and hits the inner surface of the main body in a state of being accommodated in the main body. The support has a shape that is in contact with the support and includes a support having an inclined surface on which the tip of the fixture inserted through the fixture insertion hole can be contacted. A structure capable of suppressing the support from being detached from the main body by abutting the tip of the fixture to be inserted into the fixture insertion hole in the inclined surface in the housed state in which the lid is housed in the main body. With the joints that are
With a plurality of joining members joined via two or more joinings selected from the joining of the main body or the joining of the support.
To prepare
Joint structure. The joining tool is covered by the joining member.
The joining structure according to claim 3. The joining member is a wooden pillar or horizontal member.
The joint structure according to claim 3 or 4. The joint portion has a structure in which a connector insertion hole penetrating in the plate thickness direction is formed, and the joint member and the joint tool are joined by the connector inserted through the connector insertion hole.
The joining structure according to claim 3, claim 4 or claim 5. The connector is a screw member having a male screw formed on the shaft portion.
The joint member has a screw hole for screwing the screw member on the joint surface with the joint tool, and the mouth edge of the screw hole has a degree equal to or higher than the outer surface of the main body or the support. A peripheral edge portion having a predetermined width formed of a rigid material having the strength of the above is provided so as to project from the joint surface.
The joining structure according to claim 6. It is formed of a predetermined rigid material, has a bottom plate portion and a required number of side plate portions integrally erected from the bottom plate portion, and an opening surrounded by the side plate portions is formed in a direction facing the bottom plate portion. At the same time, a joint portion capable of joining the joining member is provided on the outer surface of the bottom plate portion and the side plate portion, and the side plate portion is inclined downward from the outer surface toward the center and penetrates the fixture so as to be insertable. A bottomed box-shaped hollow structure body in which a fixture insertion hole is formed, and a joint portion formed of a predetermined rigid material and capable of closing the opening of the main body and joining a joining member to the outer surface. Is provided on the lid plate portion provided with the lid plate portion and the portion of the lid plate portion that is behind the outer surface of the lid plate portion and can be accommodated in the main body. The support is provided with a support having a shape of being abutted and supported, and having an inclined surface formed with an inclined surface on which the tip of the fixture inserted through the fixture insertion hole can be contacted. When the portion is housed in the main body, the tip of the fixing tool to be inserted into the fixing tool insertion hole comes into contact with the inclined surface, so that the support can be prevented from being separated from the main body. Using a structural joint,
A plurality of joint members are joined to the outer surface of the joint through two or more joints selected from the joints of the joint.
Joining method.

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