JP7432247B2 - Connector - Google Patents

Description

TECHNICAL FIELD The present invention relates to a connector used for installing bars such as columns that constitute the skeleton of a wooden building.

Columns play an important role in forming the framework of a building, and their lower parts must be strongly integrated with the foundation or foundation to ensure the integrity of the building even against external forces such as earthquakes. There is a need. Therefore, when columns are stood upright from the foundation, connecting devices such as column base metal fittings are often incorporated at the boundary between the two to ensure that vertical loads are reliably received, and to ensure sufficient strength against horizontal loads. As a specific example of the column base hardware, the patent documents mentioned below can be cited.

Patent Document 1 discloses a column base metal fitting that has a small exposed portion and can suppress the occurrence of dew condensation, and can also reduce manufacturing costs. This column base hardware is composed of two elements: a cylindrical center body located at the center and an insert plate that protrudes outside of the center body.By inserting an anchor bolt into the center body, the column base hardware can be used as a foundation. It can be fixed, and after fitting the insert plate into the groove cut into the column, the column is installed on the foundation by driving a drift pin through the column and the insert plate. Since this column base hardware is embedded inside the column, it is possible to suppress the occurrence of dew condensation, and the shape is suitable for press processing, making it easy to reduce manufacturing costs.

The following Patent Document 2 discloses a foundation-column fastening structure that can prevent columns from sinking into the foundation and suppress exposed metal parts. Fasteners are used. This fastening structure assumes that the bottom end of the column rests on the top of the foundation, and the fastening hardware consists of two elements: a plate fixed to the top of the foundation and a shaft protruding from the top of the plate. The column is installed on the foundation by inserting the shaft from the foundation into the bottom hole of the column, and then driving a drift pin into the shaft from the side of the column. In addition, in order to prevent the columns from sinking into the foundation, an intervening plate is inserted at the boundary between the foundation and the column, and a bar is embedded inside the foundation to support the intervening plate, which acts on the column. This prevents vertical loads from being transmitted to the foundation. In addition, most of the interposed plates and bars are hidden by the foundations and columns.

Further, Patent Document 3 discloses a structural hardware for a building that can connect horizontal members and columns as well as braces, and this hardware includes a fastener made of bolts and nuts, and a connection to the fastener. The first hardware has a shape in which a cylindrical body and a plate-like member are integrated, but in the center part of the plate-like member (above the cylindrical body), the plate-like member is partially A cutout has been made to form a gap. Furthermore, the plate-shaped member has a pin hole, and after inserting the plate-shaped member into the cut groove cut into the column, the plate-shaped member can be attached to the column by driving a pin into the pin hole from the side of the column. be stopped. Note that the gap between the plate members is determined in consideration of the tightening of a nut screwed onto a bolt protruding from the cylindrical body.

Japanese Patent Application Publication No. 2010-101099 Japanese Patent Application Publication No. 2010-59765 Japanese Unexamined Patent Publication No. 2-157338

The pillars that make up the skeleton of a wooden building are usually covered up by wall materials, so there are few chances to recognize their existence. However, there are some pillars that remain exposed to the outside even after construction, such as the pillars that support the small roof that covers the entrance porch. These pillars are placed on both the left and right sides of the passageway, so their presence has a great impact on the aesthetics of the surrounding area. In this way, pillars that are meant to be seen by the public must be given sufficient consideration to their aesthetic appearance, and parts that connect to the base, such as the foundation, should be covered up as much as possible at the installation location of the pillar. desirable. Regarding this point, in Patent Document 1 mentioned above, most of the parts can be covered up, but the drift pins are driven into the side of the pillar, and the end faces are exposed to the outside, so there remains an issue in terms of aesthetics. .

The present invention was developed based on the above-mentioned circumstances, and aims to provide a connecting tool that can improve the aesthetic appearance of a bar such as a column by covering up the parts that connect it to the pedestal at the installation location. .

The invention according to claim 1 for solving the above-mentioned problem is a connecting tool for installing an end of a bar on a pedestal, the connector being embedded inside the bar and integrated with the bar. It consists of a tool, an end connector that contacts the end surface of the bar, a fixing plate that is placed on the surface of the pedestal, and a fixing bolt that is inserted into the fixing plate, and the fixing plate is configured to It is fixed to the pedestal part via a protruding pedestal bolt, the fixing plate has a through hole for inserting the shaft of the fixing bolt, and the fixing bolt is provided on the bottom side of the fixing plate. A cutout is formed for accommodating the head of the fixing plate, and the outer edge of the cutout reaches the side peripheral surface of the fixing plate, and the fixing bolt has a female thread inside the end fitting or a cutout of the fixing plate. The missing part is configured to be exposed below the bottom surface of the end joint, and the end joint is screwed into one of the female threads of the embedding tool. In a state where the body is placed and the bar material is placed on the end joint, a tool is inserted from the gap between the pedestal and the end joint toward the defective part, and the fixing bolt is tightened. It is characterized in that the end joint and the rod can be drawn toward the fixed plate.

The coupling device according to the present invention is used to install one end side of a bar such as a column on a pedestal, and has the same function as a conventional column base metal fitting. It is composed mainly of the four elements of bolts. Among these four elements, the embedding tool is hidden inside the bar. Furthermore, the fixing plate and fixing bolts are covered by the end fittings and cannot be visually recognized from the outside. Other rods are assumed to be wood (including various types of laminated wood).

The pedestal plays the role of firmly holding one end of the bar.Specific examples include concrete foundations, wood for bases and pillars, and various steel materials. The surface of the bar and the end face of the bar are arranged to face each other. Furthermore, it is assumed that pedestal bolts are already protruding from the surface of the pedestal section in order to install the bar material. The pedestal bolt is firmly integrated with the pedestal part by some means, and plays the role of preventing the bar from being pulled out.There may be only one pedestal bolt, or there may be multiple pedestal bolts in one joint. . Note that if the pedestal is a concrete foundation, the pedestal bolt is often referred to as an anchor bolt.

The surface of the pedestal is not limited to a horizontal surface, and may be an inclined surface or a vertical surface. As a result, the bar may extend diagonally or horizontally. Also, there may be only one bar for one connector, or there may be multiple bars. If there are multiple bars like this, each will extend in different directions. In addition, in this application, the description of the shape and arrangement of each component constituting the connector is based on the state that the surface of the pedestal is a horizontal surface and the bar stands upright thereon.

The embedding tool is a metal component that is embedded inside the bar and integrated with the bar, and the bar is drawn to the pedestal via the embedding tool. In addition, it is possible to use various construction materials that have been widely used for the embedding tools, such as lag screws, deformed steel bars, and shafts. The protrusions cut into the inside of the bar and are integrated with the bar without loosening. Further, the deformed steel bar is embedded inside the bar material and integrated with adhesive, but the shaft is embedded inside the bar material and fixed with a pin or the like. In addition, since the embedding tool has a corresponding size, pilot holes are often formed in the bar material in order to embed the embedding tool. This prepared hole is machined from the end face of the bar inward, so its entrance is not exposed on the side of the bar. In addition, the number of embedding tools may be one or more than one per bar.

The fixing plate is a metal plate that is placed on the surface of the pedestal, is placed between the pedestal and the bar, and is further fixed to the pedestal via a pedestal bolt. Therefore, the fixing plate is provided with an anchor hole passing through its front and back surfaces, into which the pedestal bolt is inserted. Note that the pedestal bolt may have a certain degree of positional error, and in order to absorb this, the anchor hole 24 is often sized to allow for some margin. In addition, sometimes only one fixing plate is used for one bar, and sometimes multiple fixing plates are used.

The end connector is a metal component that is brought into contact with the end surface of the bar, and since it functions as an extension of the bar, it is necessarily placed between the pedestal and the bar. Therefore, the side surface of the end fitting is exposed to the outside without being covered. The end face of the bar rests on the top surface of the end joint, and the bottom surface of the end joint faces the surface of the pedestal, but since the bottom side of the end joint is placed on the fixed plate, the end joint does not come into contact with the pedestal, a gap is maintained between the two, and part or all of the fixing plate is located below the bottom surface of the end joint. Therefore, the downward load acting on the bar is transmitted to the pedestal via the fixing plate. In addition, for aesthetic reasons, the upper surface shape of the end joint may be made to match the cross-sectional shape of the bar. By unifying the shapes of both in this way, the side surfaces of the end joint and the bar are lined up without any difference in level, giving the appearance that the end joint and the bar are integrated. However, for the end fittings, it is also possible to adopt a distinctive design after considering harmony with the bar material, and to give the coupling itself a unique design.

The external shape of the fixing plate shall be the same as the external shape of the adjacent end connecting body or smaller than the external shape of the adjacent end connecting body. Therefore, when the end fitting is placed on the fixing plate, the fixing plate does not protrude from the side of the end fitting, and after installation, the fixing plate is covered with the end fitting and is hardly exposed to the outside. . In some cases, the end joint is integrated with the bar through a embedding tool, and in other cases, the end joint and the bar are simply brought into close contact by a structure in which the fixing plate and the embedding tool are drawn to each other. There is also. In addition, a plurality of fixing plates may be used for one end joint.

The fixing bolt is inserted from the bottom side of the fixing plate toward the inside of the end fitting, and plays the role of drawing the end fitting and embedding tool to the fixing plate and installing the bar on the pedestal. Therefore, in addition to providing a through hole in the fixing plate for inserting the shaft portion of the fixing bolt, a punch hole and a female thread are provided inside the end connector. Furthermore, in order to prevent the heads of the fixing bolts from protruding from the bottom surface of the fixing plate, a cutout in a stepped shape is formed on the bottom side of the fixing plate. Naturally, the depth of the defect should be greater than the height of the head of the fixing bolt. In order to be able to tighten the fixing bolt even when the pedestal part and the fixing plate are integrated, the missing part is made to reach the side peripheral surface of the fixing plate and the head of the fixing bolt is exposed to the outside. For these reasons, fixing bolts whose heads have a polygonal (hexagonal) outer shape are used. In addition, the shape of each part shall be adjusted so that when the end fitting is placed on the fixing plate, the end fitting does not close the defective part.

When installing a bar on the pedestal, a embedding tool is first embedded inside the bar, and the embedding tool is integrated with the bar. Regarding the fixing plate, after inserting fixing bolts from the bottom side thereof, it is placed on the surface of the pedestal, and the pedestal and the fixing plate are integrated via the pedestal bolts. Next, in addition to placing the end joint on the fixed plate, a bar material is placed on the end joint. After that, insert the tool into the gap between the pedestal and the end joint, rotate the head of the fixing bolt that is exposed in the missing part, and tighten the bolt, and the end joint and bar will be drawn to the fixing plate. .

In this way, in the present invention, the connecting tool is composed of a embedding tool, an end connecting body, a fixing plate, a fixing bolt, etc., and in addition to embedding the embedding tool in the bar material, the end connecting body is brought into contact with the end surface of the bar material, and the end connecting device is made into contact with the end surface of the bar material. After the body functions as an extension of the bar and the end fitting is placed on the fixing plate integrated with the pedestal, the fixing bolt is tightened using the missing part of the fixing plate, and the end fitting and buried fittings are tightened. The bar can be installed on the pedestal by pulling it toward the fixed plate. Moreover, the fixing plate, embedding tools, and fixing bolts are covered with end fittings and bars, and their existence cannot be recognized from the outside.

The invention according to claim 2 is a connecting tool for installing an end of a bar on a pedestal, the embedding tool being embedded inside the bar and integrated with the bar, and an end surface of the bar. The fixing plate includes a pedestal bolt that protrudes from the surface of the pedestal. The fixing plate is provided with a through hole for inserting either the male screw inside the end fitting or the male screw of the embedding tool, and the fixing plate has a through hole on the bottom side of the fixing plate. is formed with a defective portion for accommodating the fixing nut, the outer edge of the defective portion reaches the side peripheral surface of the fixing plate, and the fixing nut is screwed into the male thread. The defective portion is configured to be exposed below the bottom surface of the end joint, and the end joint is placed on the fixing plate fixed to the pedestal, and the end joint is mounted on the end joint. With the bar mounted, a tool is inserted from the gap between the pedestal and the end fitting toward the defective part and the fixing nut is tightened, thereby fixing the end fitting and the bar to the fixing plate. It is characterized by being able to be attracted to.

The invention set forth in claim 2 differs from the invention set forth in claim 1 only in part, and the through hole of the fixing plate is provided not from the shank of the fixing screw but from the bar or the end fitting toward the fixing plate. The extendable male screw is inserted. Furthermore, a fixing nut that is screwed into the male screw is placed in the missing portion of the fixing plate. Therefore, when installing the bar on the pedestal, first the end connector and the bar are brought into contact, and the male screw is made to protrude from the bottom surface of the end connector. The fixing plate is integrated with the pedestal part via a pedestal bolt, and a fixing nut is placed in the missing part. Next, the end connector is placed on the fixing plate, and then the male screw protruding from the end connector is made to reach the defective part and screwed into the fixing nut. Thereafter, when a tool is inserted into the gap between the pedestal and the end joint and the fixing nut exposed at the defective part is tightened, the end joint and the bar are drawn toward the fixed plate.

The invention according to claim 3 is characterized in that the relationship between the fixing plate and the end connecting body is limited, and a fitting groove for fitting the fixing plate is provided on the bottom side of the end connecting body. shall be. This fitting groove has a size that allows the side circumferential surface of the fixed plate to be fitted without loosening, so that shear load can be transmitted between the fixed plate and the end joint. Note that as the fixing plate is fitted into the fitting groove, the fixing plate and the end contacting body eventually come into surface contact and are pressed together, and further fitting becomes impossible. By completely fitting the fixing plate in this way, it becomes possible to transmit a compressive load between the fixing plate and the end connecting body. Even in this state, the shape of each part is adjusted so that a part of the fixing plate protrudes from the bottom surface of the end joint. As a result, the missing portion of the fixing plate is exposed below the bottom surface of the end joint, and does not hinder the tightening of fixing bolts and the like.

In the invention as claimed in claim 4, the support shaft is housed inside the end joint body, and the support shaft is arranged inside the end joint body at a position that is coaxial with the through hole, and the support shaft is housed inside the end joint body. One end surface contacts the inner surface of the end contact body, the other end surface contacts the fixing plate, and the support shaft is characterized by being drawn to the fixing plate by either a fixing bolt or a fixing nut. The support shaft is literally rod-shaped and is placed in the direction that connects the pedestal and the bar, but its one end (upper end) surface is in contact with the ceiling inside the end joint, and the other end (lower end) surface is in contact with the ceiling inside the end joint. , place it on the top of the fixed plate. As a result, the compressive load acting between the fixed plate and the end contact body is transmitted via the support shaft. Further, the support shaft prevents the fixing plate from completely entering the inside of the end connecting body, and allows the missing portion of the fixing plate to be exposed below the bottom surface of the end connecting body. Note that the space in which the support shaft is accommodated inside the end joint is not limited to the fitting groove, and may be a hollow portion into which the fixing plate can fit comfortably. By using the support shaft in this manner, a large space can be secured inside the end joint.

In addition to being arranged concentrically with the through hole, the support shaft shall be integrated with the end joint by some means and function as a part of the end joint. Further, in order to draw the support shaft toward the fixed plate, the support shaft may be provided with either a female thread or a male thread. This female thread is screwed into a fixing bolt inserted into a through hole of the fixing plate. On the other hand, the male thread is inserted into the through hole of the fixing plate and then screwed into the fixing nut placed in the defective part. The support shaft can also be simply hollow without having either male or female threads, and in that case, there may be a fixing bolt or male screw (from a buried tool, etc.) inside the support shaft. (protruding objects) will pass through.

According to the invention as claimed in claim 1, the connecting tool is composed of an embedding tool, an end connecting body, a fixing plate, a fixing bolt, etc., and in addition to embedding the embedding tool in the bar, the end connecting body is brought into contact with the end surface of the bar. After the end fitting functions as an extension of the bar, and the end fitting is placed on a fixed plate integrated with the pedestal, the fixing bolt is tightened using the missing part of the fixing plate, and the end fitting and By pulling the embedding tool toward the fixing plate, the bar can be installed on the pedestal. Moreover, the fixing plate, embedding tools, and fixing bolts are covered with end fittings and bars, and their existence cannot be recognized from the outside, so the aesthetic appearance is improved. As for the end fittings, their existence can be recognized from the outside as they are integrated with the bar, so a shape and color that harmonizes with the bar should be introduced to ensure a sufficient aesthetic appearance.

According to the invention as claimed in claim 2, the connecting tool is composed of an embedding tool, an end connecting body, a fixing plate, a fixing nut, etc., and in addition to embedding the embedding tool in the bar, the end connecting body is brought into contact with the end surface of the bar. The end joint was made to function like an extension of the bar, and the end joint was placed on a fixed plate integrated with the pedestal, and the male screw protruding from the end joint was screwed into the fixing nut in the defective part. After that, the bar can be installed on the pedestal by tightening the fixing nut using the missing part of the fixing plate and drawing the end fittings and embedding tools to the fixing plate. Moreover, since the fixing plate, the embedding tool, and the fixing nut are covered and hidden by the end fittings and the bar material, the aesthetic appearance is improved as in the invention described in claim 1.

According to the invention as claimed in claim 3, by providing a fitting groove for fitting the fixed plate on the bottom side of the end connecting body, shear load can be transmitted between the fixed plate and the end connecting body. Become. Therefore, the rigidity of the connector can be further improved.

According to the invention as claimed in claim 4, by arranging the support shaft inside the end joint and transmitting the compressive load between the fixed plate and the end joint through the support shaft, the entire fixed plate is fixed. A large space can be secured inside the end joint while preventing the body from entering the inside of the end joint. As a result, the weight of the end fitting can be reduced, and the pedestal bolt and its attached parts can be easily housed inside the end fitting.

FIG. 2 is a perspective view showing an example of the shape and usage state of a connector according to the present invention, and here it is assumed that a bar corresponding to a column is installed on a planar pedestal. This is a perspective view showing an intermediate stage of installing the bar in Fig. 1 on the pedestal. First, the embedding tool is embedded in the prepared hole of the bar as shown on the left side of the figure, and then the end joint is installed as shown on the right side of the figure. and bars are integrated. FIG. 3 is a perspective view showing a later stage of FIG. 2; as shown on the left side of the figure, the end joint integrated with the bar is placed above the fixing plate, and then the fixing bolt is tightened; The installation of the bars is completed. The lower part of the figure shows the appearance after installation has been completed. FIG. 3 is a perspective view showing a connector according to the present invention, in which four embedding tools are embedded in the bar, and the pedestal part is not a simple planar shape but a pyramid shape. 5 is a perspective view showing the process of installing the bar in FIG. 4 on the pedestal. First, the end fitting and the bar are integrated as shown on the left side of the figure, and then the bar is placed on the pedestal as shown on the right side of the figure. Install it in the section. FIG. 3 is a perspective view showing a configuration in which the fixing bolt is screwed into the embedding tool instead of the end fitting in the connector according to the present invention. FIG. 7 is a perspective view showing the process of installing the bar in FIG. 6 on the pedestal. First, the pedestal and the fixed plate are integrated as shown in the upper left of the figure, and then the upper surface of the fixed plate is attached as shown in the upper right of the figure. Place the end fitting, and then install the bar on the pedestal as shown in the lower right of the figure. In the connector according to the present invention, in addition to arranging a support shaft inside the end connecting body, it is a perspective view showing a form in which two fixing plates are fitted into one end connecting body. FIG. 9 is a perspective view showing details of an end joint and the like constituting the connector of FIG. 8; FIG. 9 is a perspective view showing a state immediately before installing the bar on the pedestal after the end joint body is integrated with the bar in FIG. 8; FIG. 11 is a perspective view showing the final stage after FIG. 10 when the installation of the bar material is completed. FIG. 9 is a perspective view showing a partially modified form of the connector in FIG. 8, in which two bars are used, and the support shaft has a male screw protruding from the lower end surface. FIG. 2 is a perspective view showing a connector according to the present invention in which the pedestal part is a wooden pillar and the bar extends horizontally from the pedestal part. FIG. 14 is a perspective view showing the process of installing the bar in FIG. 13 on the pedestal, first fixing the pedestal bolt to the pedestal as shown in the upper left of the figure, then attaching the pedestal and the fixing plate as shown in the upper right of the figure. After this, the installation of the bars is completed as shown in the lower right of the figure. It is a perspective view which shows the example of the shape of the connector which can install three bars.

FIG. 1 shows an example of the shape and usage state of a connector according to the present invention, and here it is assumed that a bar 71 corresponding to a column is installed on a planar pedestal 81. Therefore, the bar 71 stands upright and has a square cross section. Further, although the bar 71 is made of wood, laminated wood is often used from the viewpoint of reliability. Furthermore, the pedestal portion 81 is a concrete foundation, and its upper surface is finished as a simple horizontal surface with no steps, from which a pedestal bolt 84 protrudes. The arrangement of the pedestal bolt 84 corresponds to the bar 71, and the root portion of the pedestal bolt 84 is embedded in the pedestal portion 81, so that it can receive the tensile load acting on the bar 71. Note that the pedestal bolt 84 here is arranged so as to coincide with the center of the bar 71. The connector used to install the bar 71 is mainly composed of four elements: the embedding tool 51, the end joint 31, the fixing plate 11, and the fixing bolt 18.

The embedding tool 51 is a metal component that is embedded inside the bar 71, and in this figure, a general-purpose lag screw is used. A spirally extending protrusion 54 protrudes from the side surface of the embedding tool 51, and a hexagonal head 55 is provided on one end surface of the embedding tool 51. is provided. Then, the embedding tool 51 is embedded in a prepared hole 75 extending directly upward from the center of the lower end surface of the bar 71, but at this time, the protruding strip 54 bites into the inner peripheral surface of the prepared hole 75, and the embedding tool 51 is inserted into the bar 71. Strongly integrated.

The end fitting 31 is a rectangular parallelepiped-shaped metal component and is sandwiched between the pedestal 81 and the bar 71, but the planar shape of the end fitting 31 in this figure is the same as the cross section of the bar 71. , both sides are lined up without any difference in level. Furthermore, although the end connecting body 31 has a simple rectangular parallelepiped shape, a fitting groove 42, a cavity 43, etc. are formed on the bottom surface side thereof, as shown on the right side of the figure. The fitting groove 42 has a large diameter circular shape reaching near the side surface of the end connecting body 31, but its depth is limited. A cavity 43 is formed at the center of the fitting groove 42 and reaches a deeper position, in which a pedestal bolt 84 and the like are accommodated.

Since the end joint 31 functions as an extension of the bar 71, it is necessary to firmly integrate the two parts.Insert the connecting bolt 38 into the end joint 31, and connect the tip of the bolt 38 to the female thread of the embedding tool 51. 58, the end connecting body 31 and the bar 71 are attracted to each other and come into close contact with each other. In order to insert the shaft portion of the connecting bolt 38, a hole 45 is provided in the bottom surface of the cavity 43 of the end connecting body 31 to reach the top surface of the end connecting body 31. In this figure, since there is only one set of the embedding tool 51 and the connecting bolt 38, there is a risk of twisting between the end joint 31 and the bar 71. To prevent this, the rod is removed from the end joint 31. Two screw nails 39 are inserted toward the material 71. For this purpose, nail holes 49 are provided at two locations inside the end connecting body 31. The nail hole 49 is located outside the cavity 43, and its entrance is located at the bottom of the fitting groove 42. Furthermore, a step is provided on the inner diameter of the nail hole 49 so that the head of the screw nail 39 can be held in the middle of the nail hole 49.

The fixing plate 11 is a circular metal component located at the lowest part of the connector, rests on the upper surface of the pedestal part 81, and is further fixed to the pedestal part 81 via a pedestal bolt 84. Therefore, an anchor hole 24 is provided in the center of the fixing plate 11 to insert the pedestal bolt 84. After inserting the pedestal bolt 84 into the anchor hole 24 and placing the fixing plate 11 on the upper surface of the pedestal part 81, the pedestal bolt 84 is inserted into the anchor hole 24. When the pedestal nut 88 is screwed onto the pedestal nut 84 and tightened, the fixing plate 11 comes into close contact with the pedestal part 81. It should be noted that the pedestal bolt 84 may have a certain degree of positional error, and the anchor hole 24 is sized to allow for this error. Therefore, in order to stably arrange the pedestal nut 88, the anchor hole 24 is closed with two pieces, a large washer 86 and a small washer 87. However, by stacking the large washer 86 and the small washer 87 in this way, the fixed plate 11 may be easily moved due to horizontal load (shear load). Therefore, a round groove 26 is provided on the upper surface of the fixed plate 11, into which the large washer 86 is fitted without loosening, to prevent the fixed plate 11 and the large washer 86 from slipping.

The end fitting 31 is arranged so as to cover and hide the fixing plate 11, but in this case, the side peripheral surface of the fixing plate 11 fits into the fitting groove 42 of the end fitting 31, and the end fitting 31 is fixed. It becomes impossible to move horizontally with respect to the plate 11. However, the depth of the fitting groove 42 is made smaller than the thickness of the fixing plate 11, so that the entire fixing plate 11 does not fit into the fitting groove 42. Therefore, the end contact body 31 cannot contact the pedestal portion 81, and a gap is ensured between the pedestal portion 81 and the end contact body 31. Further, the fixing plate 11 and the end connecting body 31 are integrated with fixing bolts 18. The fixing bolt 18 is inserted from the fixing plate 11 toward the end fitting 31, and in order to pass the shaft thereof, a through hole 28 is provided in the fixing plate 11. is provided with a female thread 48. In this figure, since two fixing bolts 18 are used, there are naturally two sets of through holes 28 and female threads 48. Furthermore, a conical introduction part 46 is provided on the entrance side of the female thread 48 of the end fitting 31 in order to guide the tip of the fixing bolt 18. Note that on the bottom surface of the fitting groove 42 of the end connector 31, two introduction portions 46 and two nail holes 49 are arranged in a cross shape.

The fixing bolt 18 is inserted from the bottom side of the fixing plate 11 toward the female thread 48 of the end joint 31, but since the fixing plate 11 rests on the top surface of the pedestal 81, the head of the fixing bolt 18 is inserted into the fixing plate 11. It cannot be made to protrude from the bottom surface of 11. Therefore, on the bottom side of the fixing plate 11, as shown in the lower right of the figure, a cutout part 27 is provided which is cut out so as to surround the through hole 28, and the head of the fixing bolt 18 is accommodated in the cutout part 27. Furthermore, the missing portion 27 is made to reach the side peripheral surface of the fixing plate 11 so that the fixing bolt 18 can be tightened even when the pedestal part 81 and the fixing plate 11 are integrated. Due to these circumstances, it is necessary to use the fixing bolt 18 with a polygonal (hexagonal) head, and it is not possible to use a bolt with a hexagonal socket. Furthermore, due to the structure, the end fitting 31 cannot come into contact with the pedestal 81, so a gap is ensured between the pedestal 81 and the end fitting 31, and a tool T such as a spanner is inserted into this gap. The fixing bolt 18 can be tightened.

A mark 89 is drawn on the upper surface of the pedestal part 81 at a predetermined distance from the pedestal bolt 84, and a mark 29 is similarly drawn on the side circumferential surface of the fixing plate 11. When placing it on the pedestal portion 81, the position of the fixing plate 11 is adjusted so that both marks 29 and 89 overlap. Note that before mounting the fixing plate 11 on the pedestal portion 81, the fixing bolts 18 are inserted into the through holes 28. After adjusting the position of the fixed plate 11, insert the large washer 86 into the pedestal bolt 84, fit the large washer 86 into the round groove 26, then insert the small washer 87, and finally screw the pedestal nut 88, When this is tightened, the fixing plate 11 is integrated with the pedestal portion 81.

For the bar 71, after embedding the embedding tool 51 in the prepared hole 75, bring the end fitting 31 into contact with the lower end surface of the bar 71, and then insert the connecting bolt 38 and screw nail from the bottom side of the end fitting 31. 39 is inserted to integrate the end connecting body 31 with the bar 71. The connecting bolt 38 is screwed into the female thread 58 of the embedding tool 51 through the punch hole 45, but the screw nail 39 enters inside the bar 71 from the lower end surface through the nail hole 49. Then, the end fitting 31 integrated with the bar 71 is placed above the fixing plate 11, the fixing plate 11 is fitted into the fitting groove 42 of the end fitting 31, and the pedestal part 81 and the end fitting 31 are connected. When the tool T is inserted through the gap and the fixing bolt 18 is tightened, installation of the bar 71 is completed.

FIG. 2 shows a stage in the middle of installing the bar 71 in FIG. As shown on the right side, the end joint 31 and the bar 71 are integrated. Prior to construction, when embedding the embedding tool 51 in the bar 71, the tip of the embedding tool 51 is brought into contact with the pilot hole 75 of the bar 71, and then the embedding tool 51 is rotated so that the protrusion 54 is inserted into the pilot hole 75. Eventually, the embedded tool 51 is integrated with the bar 71, and the entirety is accommodated in the prepared hole 75. Regarding the fixing plate 11, before placing it on the upper surface of the pedestal part 81, the fixing bolts 18 are inserted into the through holes 28 from the bottom side of the fixing plate 11.

Thereafter, as shown on the right side of the figure, the end connecting body 31 is brought into contact with the lower end surface of the bar 71, and then the connecting bolt 38 is brought close to the central cavity 43 of the end connecting body 31, and its shaft is inserted into the hole 45. After inserting it into the hole, it is screwed into the female screw 58 of the embedding tool 51, and the connecting bolt 38 is further tightened, so that the end connecting body 31 and the bar 71 are eventually integrated. However, if only one connecting bolt 38 is used, there is a risk that both sides may be twisted, so two screw nails 39 are inserted so as to surround the connecting bolt 38. The screw nail 39 passes through the nail hole 49 of the end joint 31 and reaches the lower end surface of the bar 71. Note that a step is provided on the inner diameter of the nail hole 49 so that the head of the screw nail 39 can be held in the middle of the nail hole 49.

After the fixing bolts 18 have been inserted, the fixing plate 11 is brought closer to the pedestal part 81, the pedestal bolts 84 are inserted into the anchor holes 24, and the fixing plate 11 is placed on the upper surface of the pedestal part 81. Thereafter, in order to place the fixing plate 11 in an accurate position, the marks 29, 89 on both the pedestal part 81 and the fixing plate 11 are aligned, and then the large washer 86 is inserted into the pedestal bolt 84. The large washer 86 fits into the round groove 26 of the fixed plate 11 without loosening, and can transmit a horizontal load (shear load). Furthermore, a small washer 87 is inserted, and finally a pedestal nut 88 is screwed and tightened, so that the pedestal portion 81 and the fixed plate 11 are integrated. At this stage, the head of the fixing bolt 18 is accommodated in the cutout 27, but the cutout 27 has enough room for the head of the fixing bolt 18, and the fixing bolt 18 can freely rotate.

FIG. 3 shows a stage after FIG. 2, in which the end joint 31 integrated with the bar 71 is placed above the fixing plate 11, as shown on the left side of the figure, and then the fixing bolt 18 is tightened. Then, as shown on the right side of the figure, the installation of the bar 71 is completed. Note that the lower part of the figure shows the appearance after the installation of the bar 71 is completed. During construction, the bar 71 with the integrated end joint 31 is lifted up and moved directly above the fixing plate 11, and then the bar 71 is gradually lowered until it is fixed as shown in the upper left of the figure. The bolt 18 enters the introduction part 46 of the end joint 31, and the free movement of the bar 71 is restricted. At this stage, the end joint 31 is located above the upper surface of the fixing plate 11, and at this time, the tool T is inserted toward the defective part 27 of the fixing plate 11 and the fixing bolt 18 is tightened. As a result, the fixing bolt 18 is screwed into the female thread 48 of the end fitting 31, and as it is tightened, the end fitting 31 gradually descends, and eventually the fixing plate 11 is inserted into the fitting groove 42 of the end fitting 31. When the bar 71 is fitted without loosening and the upper surface of the fixing plate 11 comes into contact with the bottom surface of the fitting groove 42, the installation of the bar 71 is completed. In this state, the pedestal bolt 84, pedestal nut 88, and the like are accommodated in the cavity 43 of the end connecting body 31.

Even at the stage when the installation of the bar 71 is completed, the entire fixed plate 11 does not fit into the fitting groove 42, and the end connecting body 31 does not come into contact with the pedestal part 81. Therefore, the missing portion 27 is not covered up by the end joint 31, and the tightening work of the fixing bolt 18 is not hindered. Naturally, consideration must be given to the fit between the fixing plate 11 and the fitting groove 42, the size of the missing portion 27, etc. so as not to hinder the tightening of the fixing bolt 18. When the installation of the bar 71 is completed as shown in the lower part of the figure, parts such as the fixing plate 11 and the embedding tool 51 are covered and only the side surfaces of the end joint 31 and the bar 71 are exposed to the outside. As a result, the wood grain of the bar 71 and the metallic luster of the end fitting 31 harmonize to create a beautiful appearance. Note that a gap will remain between the pedestal part 81 and the end joint 31, but this will not affect the aesthetics, and moreover, this gap will make it easier to replace or remove the bar 71 for some reason. Also, the work can proceed smoothly. Further, by leaving a gap between the pedestal part 81 and the end connecting body 31, there is an effect that the surface of the pedestal part 81 is less affected by the undulations remaining on the surface.

FIG. 4 shows a connector according to the present invention in which four embedding tools 51 are embedded in the bar 71, and the pedestal portion 81 is not a simple planar shape but a pyramid shape. The pedestal portion 81 here has a pyramidal shape corresponding to the cross section of the bar 71, and a pedestal bolt 84 protrudes from the center of its upper surface. Furthermore, the fixing plate 12 is circular and has through holes 28 at four locations, and each through hole 28 has a missing portion 27, but the point is that it is integrated with the pedestal part 81 using a pedestal nut 88 or the like. is the same as the previous figure. As for the bar 71, four embedding tools 51 are embedded in its lower end surface, and when the connecting bolt 38 is screwed into the female thread 58 of the embedding tool 51, the end joint 32 and the bar 71 are integrated. do. By providing four embedding tools 51 in this manner, twisting between the end connecting body 32 and the bar 71 will not occur.

The end fitting 32 has a rectangular parallelepiped shape corresponding to the cross section of the bar 71, and has a fitting groove 42 on its bottom side for fitting the fixing plate 12, and a pedestal bolt in the center of the fitting groove 42. A cavity 43 is provided for accommodating 84 and the like. Further, on the bottom surface of the fitting groove 42, introduction portions 46 and four punch holes 45 are alternately arranged. The introduction part 46 has a conical shape, and a female thread 48 that is screwed into the fixing bolt 18 is provided at the back of the introduction part 46 . On the other hand, the punch hole 45 is for inserting the connecting bolt 38 that is screwed into the embedding tool 51, and a step is provided on the inner diameter of the punch hole 45 so that the head of the connecting bolt 38 can be held in the middle. be. Note that the entire fixing plate 12 will not fit into the fitting groove 42, and the missing portion 27 will not be covered and hidden by the end joint 32. Therefore, the fixing bolt 18 can be tightened by utilizing the gap between the pedestal part 81 and the end connecting body 32. In addition, marks 29, 89 are drawn on both the base portion 81 and the fixed plate 12 for positioning.

FIG. 5 shows the process of installing the bar 71 shown in FIG. The bar 71 is installed on the pedestal part 81 as shown in FIG. Prior to construction, four embedding tools 51 are embedded in the bar 71, then the end connector 32 is brought into contact with the lower end surface of the bar 71, and the connecting bolt 38 is inserted from the end connector 32 toward the embedding tool 51. Insert the end connector 32 into close contact with the bar 71. Further, regarding the fixing plate 12, the fixing bolt 18 is inserted from the bottom side thereof, and then the fixing plate 12 is placed on the upper surface of the pedestal part 81, and then the position of the fixing plate 12 is adjusted based on the marks 29, 89. Then, after inserting the large washer 86 and the small washer 87 into the pedestal bolt 84, the pedestal nut 88 screwed onto the pedestal bolt 84 is tightened, and the fixing plate 12 is integrated with the pedestal portion 81. In this state, the four fixing bolts 18 protrude from the fixing plate 12 as shown in the lower left of the figure, but their heads are exposed in the cutout 27 and can be rotated with the tool T.

In addition to integrating the end joint 32 and the bar 71, the pedestal portion 81 and the fixing plate 12 are also integrated, and then the bar 71 is placed above the fixing plate 12. Then, as the bar 71 is gradually lowered, the tip of the fixing bolt 18 will eventually enter the introduction part 46. Next, when the head of the fixing bolt 18 is rotated with the tool T, the fixing bolt 18 will be inserted into the introduction part. It begins to screw together with the female thread 48 at the back of 46. Thereafter, as the four fixing bolts 18 are tightened evenly, the bar 71 gradually descends, and eventually the fixing plate 12 fits into the fitting groove 42, and the upper surface of the fixing plate 12 fits into the fitting groove. 42, the installation of the bar 71 is completed. Note that even in this state, a gap is maintained between the pedestal portion 81 and the end connecting body 32, so that the tool T can be inserted.

FIG. 6 shows a configuration in which the fixing bolt 18 is screwed into the embedding tool 51 instead of the end fitting 33 in the coupling device according to the present invention. The fixing plate 13 in this figure has a square shape instead of the conventional circular shape, and correspondingly, the fitting groove 42 of the end connecting body 33 is also square. Further, the fixing plate 13 is provided with four through holes 28 for inserting the fixing bolts 18, and the end connecting body 33 is provided with a punch hole 45 at a position concentric with these holes. The punched hole 45 here simply allows the shaft portion of the fixing bolt 18 to pass therethrough, and its inner diameter does not change midway. Then, the embedding tool 51 is embedded in the bar 71 at a position concentric with the through hole 28 and the punch hole 45. Other than that, the point that the fixing bolt 18 is inserted from the bottom side of the fixing plate 13 is the same as in each of the previous figures.

A cutout 27 is provided on the bottom side of the fixing plate 13 so as to surround the through hole 28, and an anchor hole 24 is provided in the center. Furthermore, the fitting groove 42 is deep enough to fit only a portion of the fixing plate 13, so that even when the fixing plate 13 is completely fitted into the fitting groove 42, the missing portion 27 is not covered. There isn't. Note that in the form shown in this figure, it is impossible to integrate only the end joint 33 with the bar 71, and the fixing plate 13 and the bar 71 are drawn together by the fixing bolt 18 screwing into the embedding tool 51. and the end connecting body 33 is sandwiched between them.

FIG. 7 shows the process of installing the bar 71 in FIG. 6 on the pedestal part 81. First, the pedestal part 81 and the fixing plate 13 are integrated as shown in the upper left of the figure, and then as shown in the upper right of the figure. The end connecting body 33 is placed on the upper surface of the fixing plate 13, and then the bar 71 is installed on the pedestal part 81 as shown in the lower right of the figure. As shown in the upper left of the figure, when integrating the pedestal portion 81 and the fixing plate 13 via the pedestal bolts 84, the fixing bolts 18 are inserted into the through holes 28 of the fixing plate 13 in advance. Next, the end fitting 33 is placed above the fixing plate 13, the fixing bolt 18 is inserted into the hole 45 of the end fitting 33, and the fixing plate 13 is fitted into the fitting groove 42 of the end fitting 33. Eventually, the top surface of the fixing plate 13 and the bottom surface of the fitting groove 42 come into contact with each other, and the end joint 33 is held by the fixing plate 13. At this time, a gap is ensured between the pedestal portion 81 and the end connecting body 33, and by inserting the tool T into this gap, the fixing bolt 18 can be rotated.

When the fixing plate 13 is fitted into the fitting groove 42 of the end fitting 33, the pedestal bolt 84 etc. are accommodated in the cavity 43 of the end fitting 33, and the fixing bolt 84 is inserted from the top surface of the end fitting 33. 18 shaft portions protrude. When the bar 71 is placed on the end joint 33, the tip of the fixing bolt 18 will come into contact with the female thread 58 of the embedding tool 51, but after that, the tool T When the fixing bolts 18 are inserted and the fixing bolts 18 are rotated, the fixing bolts 18 are eventually screwed together with the embedding tool 51, and when the four fixing bolts 18 are further tightened evenly, the end joints 33 and the bar material are finally connected. 71 come into contact, and the installation of the bar 71 is completed, as shown in the lower right of the figure. When the installation is completed in this way, the sides of both the end joint 33 and the bar 71 are lined up without any difference in level, the fixing plate 13 and the embedding tool 51 are covered, and both the end joint 33 and the bar 71 are Only the sides are exposed to the outside.

FIG. 8 shows a connector according to the present invention in which a support shaft 62 is disposed inside the end connecting body 34, and two fixing plates 14 are fitted into one end connecting body 34. The cross section of the bar 71 here is an elongated rectangle, and accordingly, the number of pedestal bolts 84 is increased to two, and the fixing plate 14 is arranged on each pedestal bolt 84. Note that the pedestal portion 81 here has a simple planar shape, and a pedestal bolt 84 protrudes from the upper surface thereof. The fixing plate 14 is circular and has four through holes 28 near its side circumferential surface, as well as an anchor hole 24 in the center for inserting a pedestal bolt 84. Naturally, the two fixing plates 14 have the same shape.

Eight embedding tools 52 are embedded in the bar 71, but the embedding tools 52 in this figure are different from the previous ones in that a male screw 57 protrudes from a head 55. The end fitting 34 has an elongated rectangular parallelepiped shape corresponding to the cross section of the bar 71, and has two fitting grooves 42 in which the two fixing plates 14 can be fitted. Four support shafts 62 are arranged in each fitting groove 42. The support shaft 62 is sandwiched between the ceiling of the fitting groove 42 and the upper surface of the fixing plate 14, and not only prevents the entire fixing plate 14 from fitting into the fitting groove 42, but also acts on the end joint 34. The downward load is transmitted to the pedestal portion 81 via the support shaft 62 and the fixed plate 14. In addition, a punch hole 45 is provided on the upper surface of the end connector 34 for inserting the male screw 57 of the embedding tool 52. This punch hole 45 reaches the fitting groove 42.

Each support shaft 62 has a cylindrical shape, and a conical introduction part 46 is provided at the center of its lower end surface, and a female thread 48 is provided at the back of the introduction part 46. Since this female thread 48 reaches the upper end surface of the support shaft 62, the support shaft 62 becomes hollow. Since the introduction part 46 and the female thread 48 of the support shaft 62 are arranged concentrically with the through hole 28 of the fixing plate 14, the fixing bolt 18 is screwed into the female thread 48 through the introduction part 46. Further, the upper end surface of the support shaft 62 is brought into contact with the ceiling of the fitting groove 42, but at this time, the female thread 48 and the punch hole 45 are aligned concentrically, and the male thread 57 of the embedding tool 52 is screwed into the female thread 48 of the support shaft 62. It can be so. Therefore, this female thread 48 is threadedly engaged with the fixing bolt 18 below, and also threadedly engaged with the male thread 57 of the buried tool 52 above, so that the fixing plate 14 and the bar 71 are drawn to each other via the support shaft 62. It will fit.

FIG. 9 shows details of the end fitting 34 and the like constituting the connector of FIG. 8. Fitting grooves 42 are provided at two locations on the bottom surface side of the end joint 34 as shown in the upper right of the figure. Each fitting groove 42 has a simple circular cross section, and the fixing plate 14 can be fitted into it without loosening. In addition, as shown in the lower left of the figure, the fixing plate 14 has four through holes 28, a cutout 27 is provided to surround each through hole 28, and an anchor is provided in the center of the fixing plate 14. A hole 24 is provided. In addition, the middle part of the figure shows the process of integrating the end joint 34 and the bar 71.

Prior to construction, the embedding tool 52 is embedded in the pilot hole 75 of the bar material 71, but the male screw 57 of the embedding tool 52 is made to protrude from the bar material 71, and during construction, the male screw 57 is inserted into the hole 45 of the end joint 34. , to reach the fitting groove 42. Then, insert the support shaft 62 into the fitting groove 42 of the end joint 34, screw the male thread 57 of the embedding tool 52 into the female thread 48 on the upper end surface of the support shaft 62, and further tighten the support shaft 62. The tool 52 is drawn toward the support shaft 62, and finally the end joint 34 and the bar 71 are integrated. After the end joint 34 and the bar 71 are integrated in this way, the fixing plate 14 is fitted into the fitting groove 42, but since the fixing plate 14 contacts the lower end surface of the support shaft 62, the fixing plate 14 14 cannot be inserted any deeper. In this state, the shape of each part is adjusted so that the missing part 27 of the fixing plate 14 is exposed below the bottom surface of the end connecting body 34.

FIG. 10 shows a state immediately before the bar 71 is installed on the pedestal 81 after the end joint body 34 is integrated with the bar 71 of FIG. The male screw 57 of the embedding tool 52 has reached the fitting groove 42, and by screwing this into the female screw 48 of the support shaft 62, the end connecting body 34 and the bar 71 are integrated. Further, two fixing plates 14 are lined up on the upper surface of the pedestal part 81, and each is integrated with the pedestal part 81 via a pedestal bolt 84. Eight fixing bolts 18 protrude from the two fixing plates 14, each of which enters the introduction part 46 of the support shaft 62 and is screwed into a female thread 48 at the back thereof. In this way, the fixing bolt 18, the support shaft 62, and the embedding tool 52 are arranged concentrically, and the bar 71 can be drawn to the fixing plate 14 via these.

The end connecting body 34 is made of metal, and its side surfaces are exposed to the outside. Therefore, various metal parts can be attached to the side surface of the end joint body 34 by welding or the like. Here, a clevis 65 is attached to the side surface of the end joint body 34, and one end side of the tension rod 67 is held through this. ing. Note that the clevis 65 and the tension rod 67 are connected via a pin 66, and the direction in which the tension rod 67 is pulled out can be adjusted. Further, in this figure, welding is assumed as a means for attaching the clevis 65 to the end joint 34, but bolts or the like may also be used.

FIG. 11 shows the final stage after FIG. 10, when the installation of the bar 71 is completed. A gap is ensured between the base portion 81 and the end connecting body 34, and the fixing bolt 18 can be tightened to the end using this gap. After the bar 71 is installed, the fixing plate 14 and the fixing bolt 18 are covered with the end fitting 34, and only the side surfaces of the end fitting 34 and the bar 71 are visible from the outside. Further, a tension rod 67 is held on the side surface of the end connecting body 34 via a clevis 65. Since the end fitting 34 is made of metal in this way, various parts can be attached with high strength. In that case, it is also possible to attach a gusset plate or the like in addition to the clevis 65 shown in this figure, although consideration must be given to aesthetics.

FIG. 12 shows a partially modified form of the connector in FIG. 8, in which the number of bars 71 is two, and the support shaft 63 has a male screw 47 protruding from the lower end surface. There is. Here, the size of the end joint 34 is effectively utilized, and two bars 71 are placed on one end joint 34, but both of them extend diagonally, and as they move away from the end joint 34, and move away from each other. Note that the four embedding tools 52 are embedded in each bar 71, and the male screws 57 protruding therefrom are inserted into the end fittings 34, as in FIG. 8 above. Further, a female screw 48 is provided on the upper end surface of the support shaft 63, and a male screw 47 protrudes from the lower end surface, and the male screw 57 of the embedding tool 52 is screwed into this female screw 48. On the other hand, the male screw 47 on the lower end surface of the support shaft 63 is inserted into the through hole 28 of the fixing plate 15 so that its tip reaches the defective portion 27 . In other respects, the fixing plate 15 is the same as that shown in FIG. 8 above, and a fixing nut 19 is placed in the missing portion 27 of the fixing plate 15 and screwed onto the male screw 47 of the support shaft 63. Therefore, the embedding tool 52 is drawn to the fixing plate 15 via the support shaft 63, and when the fixing nut 19 is tightened, the installation of the bar 71 is completed.

FIG. 13 shows a connector according to the present invention in which the pedestal part 82 is a wooden pillar, and the bar 71 extends horizontally from the pedestal part 82. The bar 71 here is a beam extending in the horizontal direction, one end of which is supported by a pedestal 82, and a connector is used to connect the pedestal 82 and the bar 71. In this figure, a pedestal bolt 85 is projected from the side surface of the pedestal portion 82, but the pedestal bolt 85 here has a structure in which a deformed steel bar is integrated into one end thereof, and this deformed steel bar portion is attached to the pedestal. It is embedded in the pilot hole 83 of the section 82 and fixed with adhesive. The fixing plate 15 is the same as that shown in FIG. A defective portion 27 is formed.

Four prepared holes 75 are machined in the end surface of the bar 71, and the embedding tool 52 is embedded in each of the prepared holes 75, but the embedding tool 52 here is similar to that shown in FIG. 8 above. A male screw 57 protrudes from one end surface. Further, the end joint 36 has a shape corresponding to the cross section of the bar 71, and has a cavity 43 in the center thereof, in which a pedestal bolt 85 and the like can be accommodated. Four punch holes 45 are provided around the cavity 43 in order to insert the male screws 57 of the embedding tool 52. In addition, a fitting groove 42 is provided on the bottom surface side (right side in the figure) of the end connecting body 36 in order to fit the fixing plate 15 thereinto.

When the embedding tool 52 is embedded in the bar 71, only the male screw 57 protrudes from the end surface of the bar 71. Thereafter, when the end fitting 36 is brought into contact with the bar 71, the male screw 57 passes through the punch hole 45 and reaches the fitting groove 42. Further, after fixing the pedestal bolt 85 to the pedestal part 82, the fixing plate 15 is brought into contact with the pedestal part 82, then the large washer 86 and the small washer 87 are inserted into the pedestal bolt 85, and then the pedestal nut 88 is screwed. , the fixing plate 15 is integrated with the pedestal portion 82. Then, a fixing nut 19 is placed in each defective part 27, and then the end joint 36 and the bar 71 are brought closer to the fixing plate 15. At this time, the male screw 57 of the embedding tool 52 is inserted into the through hole 28. When the fixing nut 19 is further screwed onto the male screw 57 and then the fixing nut 19 is tightened, the embedding tool 52 is drawn to the fixing plate 15, and the installation of the bar 71 is completed.

FIG. 14 shows the process of installing the bar 71 of FIG. 13 on the pedestal part 82. First, the pedestal bolt 85 is fixed to the pedestal part 82 as shown in the upper left of the figure, and then the pedestal bolt 85 is fixed as shown in the upper right of the figure. The pedestal part 82 and the fixing plate 15 are integrated, and then the installation of the bar 71 is completed as shown in the lower right of the figure. When the pedestal bolt 85 is fixed to the pedestal part 82 as shown in the upper left of the figure, only the threaded portion thereof protrudes from the side surface of the pedestal part 82. Next, the fixing plate 15 is brought close to the pedestal part 82, the pedestal bolt 85 is inserted into the center of the fixing plate 15, the fixing plate 15 is brought into contact with the side surface of the pedestal part 82, and the pedestal is screwed onto the pedestal bolt 85. When the nut 88 is tightened, the base portion 82 and the fixing plate 15 are integrated, and thereafter, the fixing nut 19 is placed in each defective portion 27.

Thereafter, the end fitting 36 is arranged so as to cover the fixing plate 15, the fixing plate 15 is fitted into the fitting groove 42, and the bar 71 is brought into contact with the end fitting 36. The male screw 57 is made to reach the defective portion 27 and screwed into the fixing nut 19 disposed there. When the four fixing nuts 19 are tightened evenly, the bar 71 is gradually drawn toward the fixing plate 15, and finally the bar 71 is installed on the pedestal portion 82. Note that even in this state, a gap is maintained between the pedestal portion 82 and the end connecting body 36, so that the fixing nut 19 can be loosened later.

FIG. 15 shows an example of the shape of a connector on which three rods 71 can be installed. The three rods 71 here extend in different directions; the central one stands upright, but the two rods sandwiching it extend diagonally; An embedding tool 51 is embedded in the center of the lower end surface of the material 71. In addition, the end joint 35 used here has three flat surfaces on which the bar 71 is placed, one in the center is a horizontal surface, but both sides thereof are sloped surfaces, and each flat surface has a punched hole. 45 is provided. Furthermore, a fitting groove 42 for fitting the fixing plate 11 and a female thread 48 for screwing into the fixing bolt 18 are provided on the bottom side of the end fitting 35. can be drawn to the fixed plate 11, and the three bars 71 can be installed on the pedestal part 81 all at once. It should be noted that each of the figures so far shows an example of the configuration of a coupling according to the present invention, and by combining various elements depicted in each figure to the extent possible, the optimum coupling according to the application can be created. can be introduced.

11 Fixed plate (circular, two through holes, round groove)
12 Fixed plate (circular, 4 through holes, round groove)
13 Fixed plate (square, 4 through holes, no round groove)
14 Fixed plate (circular, 4 through holes, no round groove)
15 Fixed plate (circular, 4 through holes, no round groove, combined with fixing nut)
18 Fixing bolt 19 Fixing nut 24 Anchor hole 26 Round groove 27 Missing part 28 Through hole 29 Marker 31 End joint (fitting groove is circular, female thread in two places, nail hole in two places, punch hole in one place)
32 End joint (circular fitting groove, 4 female threads, 4 punch holes)
33 End joint (square fitting groove, 4 punch holes)
34 End joint (two fitting grooves, support shaft placed in the fitting groove)
35 End joint (thing to place three bars on)
36 End joint (circular fitting groove, 4 punch holes)
38 Connection bolt 39 Screw nail 42 Fitting groove 43 Hollow part 45 Punch hole 46 Introduction part 47 Male thread 48 Female thread 49 Nail hole 51 Burying tool (thing with lag screw/female thread)
52 Burying equipment (things with lag screws/male threads)
54 Projection 55 Head (head of burial tool)
57 Male screw (male screw of buried tool)
58 Female thread (female thread of buried tool)
62 Support shaft (female thread on top end, introduction part on bottom end)
63 Support shaft (female thread on top end, male thread on bottom end)
65 Clevis 66 Pin 67 Tension rod 71 Bar 75 Pilot hole (bar pilot hole)
81 Pedestal part (concrete foundation)
82 Pedestal part (wooden pillar)
83 Pilot hole (pilot hole of pedestal part)
84 Pedestal bolt (protruding from the surface of the concrete foundation)
85 Pedestal bolt (integrated with deformed steel bar)
86 Large washer 87 Small washer 88 Pedestal nut 89 Mark T Tool (spanner)

Claims (4)

A connector for installing the end of the bar (71) on the pedestal (81),
An embedding tool (51 or 52) that is embedded inside the bar (71) and integrated with the bar (71), and end connectors (31 to 35) that are brought into contact with the end surface of the bar (71). , consisting of a fixing plate (11 to 14) placed on the surface of the pedestal part (81), and a fixing bolt (18) inserted into the fixing plate (11 to 14),
The fixing plates (11 to 14) are fixed to the pedestal (81) via pedestal bolts (84) protruding from the surface of the pedestal (81),
The fixing plate (11 to 14) is provided with a through hole (28) into which the shaft of the fixing bolt (18) is inserted, and the bottom side of the fixing plate (11 to 14) is provided with a through hole (28) for inserting the shaft portion of the fixing bolt (18). A cutout (27) is formed to accommodate the head of the fixing bolt (18), and the outer edge of the cutout (27) reaches the side peripheral surface of the fixation plate (11 to 14). The fixing bolt (18) is screwed into either the female thread (48) inside the end connector (31 or 32 or 34 or 35) or the female thread (58) of the embedding tool (51). can be,
The defective portion (27) is configured to be exposed below the bottom surface of the end connecting body (31 to 35),
The end connectors (31 to 35) are placed on the fixed plates (11 to 14) fixed to the pedestal (81), and the bar (71) is placed on the end connectors (31 to 35). In this state, insert the tool (T) toward the defective part (27) through the gap between the pedestal part (81) and the end connecting body (31 to 35), and tighten the fixing bolt (18). , a coupling device characterized in that the end fittings (31 to 35) and the rod (71) can be drawn to the fixing plate (11 to 14). A connector for installing the end of the bar (71) on the pedestal (81 or 82),
an embedding tool (52) that is embedded inside the bar (71) and integrated with the bar (71); an end connector (34 or 36) that is brought into contact with the end surface of the bar (71); Consisting of a fixing plate (15) placed on the surface of the pedestal (81 or 82), and a fixing nut (19) placed on the bottom side of the fixing plate (15),
The fixing plate (15) is fixed to the pedestal (81 or 82) via a pedestal bolt (84 or 85) protruding from the surface of the pedestal (81 or 82),
The fixing plate (15) is provided with a through hole (28) for inserting either the male screw (47) inside the end connector (34) or the male screw (57) of the embedding tool (52). , and a cutout (27) for accommodating the fixation nut (19) is formed on the bottom side of the fixation plate (15), and the outer edge of the cutout (27) is formed on the bottom side of the fixation plate (15). 15), and the fixing nut (19) is screwed into the male screw (47 or 57),
The defective portion (27) is configured to be exposed below the bottom surface of the end joint (34 or 36),
The end joint (34 or 36) is placed on the fixed plate (15) fixed to the pedestal (81 or 82), and the bar (71) is placed on the end joint (34 or 36). In this state, insert the tool (T) toward the defective part (27) through the gap between the pedestal part (81 or 82) and the end joint (34 or 36), and tighten the fixing nut (19). A coupling device characterized in that the end connector (34 or 36) and the bar (71) can be drawn toward the fixing plate (15). 3. A fitting groove (42) according to claim 1 or 2, wherein a fitting groove (42) for fitting the fixing plate (11 to 15) is provided on the bottom side of the end connecting body (31 to 36). Connector. A support shaft (62 or 63) is arranged inside the end joint (34) at a position coaxial with the through hole (28), and one end surface of the support shaft (62 or 63) The support shaft (62 or 63) contacts the inner surface of the end connecting body (34), and the other end surface contacts the fixing plate (14 or 15). 4. A coupling according to claim 1, 2 or 3, characterized in that it is attracted to the fixed plate (14 or 15) by one of the following:

Images