JP2011132778A - Fastening metal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fastening metal, used for installing a column on an upper surface of a ground sill with which the need for driving a drift pin into a side face of the column is eliminated, and esthetic appearance is improved. <P>SOLUTION: The fastening metal 11 includes: a plate 12 sandwiched at a boundary between the ground sill 32 and the column 33; a lower shaft 13, projecting downward, from the plate 12 and inserted into a fixing hole 37 formed in an upper surface of the ground sill 32; and an upper shaft 14 projecting upward from the plate 12 and inserted into a positioning hole 38 formed in a lower surface of the column 33. A lateral hole 16, allowing the drift pin 21 to be inserted is formed in the lower shaft 13. A plurality of engaging holes 17 are formed in the plate 12 so that coach screws 22 to be driven into the column 33 can be inserted. By fixing the fastening metal 11 to the column 33 by using the coach screws 22 in this manner, a need for forming a hole or the like in a side face of the column 33 is eliminated, need for driving a pin etc. is eliminated, and aesthetic appearance is improved, as only wood grain of the column 33 is visually recognized from the inside of a room. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fastening hardware used when a column is installed on an upper surface of a base.

  A wooden frame construction method, also called a conventional construction method, is a construction method for building a skeleton by combining rod-shaped wood such as columns and beams, and is widely used as a construction method for houses. In this construction method, in order to secure the strength of the building, it is necessary to firmly fasten adjacent members, and measures such as providing a tenon or joint on the members have been taken for a long time. However, there are several problems, such as the fact that the cross-sectional defect is caused by processing the tenon, and there is a risk that the strength may decrease, and if the processing accuracy is poor, there are some problems such as requiring adjustment work on site, and recently, various hardware is used In many cases, the members are fastened together.

  FIG. 6 shows a configuration example when the pillar is installed on the base using the fastening hardware. There are various types of fasteners that fasten members together, depending on the purpose. In this figure, a shaft with a circular cross section is attached to two slats that are bent in a U shape. The shaft has a welded shape, and the shaft is inserted into a fixing hole machined on the upper surface of the base, and the shaft and the base are integrated by a drift pin driven into the side surface of the base. The slats are inserted into two rows of slits machined in the lower part of the pillars, and the slats and the pillars are integrated by drift pins driven into the side surfaces of the pillars. In this way, by integrating the foundation and the pillar via the fastening hardware and the drift pin, the pillar will not be detached from the foundation even when an external force is applied due to an earthquake or the like.

  Various forms of techniques for mounting pillars on the foundation have been developed so far, and examples thereof include the following patent documents. Document 1 aims to fix the pillar with high strength, and a fixed hardware is interposed between the foundation and the pillar. In the fixed hardware, a base plate placed on the upper surface of the base and a support plate in contact with the lower surface of the pillar are fixed through an upright plate. A mounting plate that stands upright from the support plate is inserted into the column, and the column and the mounting plate are fixed by drift pins. Next, Document 2 aims to improve the workability when joining the foundation and the column across the foundation, and there is a lower joint fixed to the upper surface of the foundation and an upper joint inserted into the foundation. It has a structure that can be attached and detached with screws, and has excellent workability on site. In addition, the rod-shaped junction part of an upper side connector is inserted in the pillar, and both are integrated by the drift pin.

JP 2002-115339 A JP 2003-213799 A

  As shown in FIG. 6, the method of integrating the base and the pillar via the fastening hardware has various advantages such as excellent strength and shortening the work time at the site. However, in addition to the fastening hardware shown in FIG. 6, all of the techniques disclosed in the previous patent documents have driven the drift pin into the side surface of the column, and inevitably machine the pin hole for driving the drift pin into the column. There is a need. When the building is completed, the pin hole is usually covered with a wall or a cloth and cannot be seen from the room. However, for Japanese-style rooms, traditionally the pillars are often shown as they are, and pin holes and drift pins may be visible from the room due to construction reasons.

  In order to create a natural atmosphere in the Japanese-style room, many things of natural origin such as timber, clay walls and tatami mats are used. There is a risk of discomfort. In order to solve this problem, there are cases where measures are taken such as pushing the drift pin into the pillar and filling wood into the entrance of the pin hole. However, stuffed wood often has subtle differences in color and grain from the surroundings, making it difficult to completely eliminate the presence of pin holes.

  The present invention was developed on the basis of such circumstances, and is used when installing a pillar on the upper surface of the base, and it is not necessary to drive a drift pin on the side of the pillar, and for the purpose of providing a fastening hardware that contributes to an improvement in aesthetics. Yes.

  The invention according to claim 1 for solving the above-described problem is a plate that is sandwiched between the boundary between the base and the pillar, a lower shaft that protrudes downward from the plate and is inserted into a fixing hole on the top surface of the base, and the plate. An upper shaft that protrudes upward and is inserted into a positioning hole on the lower surface of the column, and the lower shaft has a lateral hole for inserting a drift pin that is driven into the side surface of the base, and the plate has A fastening hardware comprising a plurality of locking holes for inserting a coach screw to be screwed into the lower surface of the column.

  The fastening hardware according to the present invention is used to install a pillar on a base and is composed of a plate, a lower shaft, and an upper shaft. The plate is a metal plate sandwiched between the upper surface of the base and the lower surface of the column, and has a rectangular shape substantially equal to the cross section of the column to be fastened or a disk shape smaller than the cross section of the column.

  The lower shaft is a circular metal bar protruding from the center of the lower surface of the plate, and is inserted into a fixed hole machined on the upper surface of the base. The fixing hole is processed at the mounting position of the column at the base lumbering stage, and the diameter thereof is the same as that of the lower shaft, and it is necessary to have a length enough to insert the entire lower shaft. The lower shaft inserted into the fixing hole is integrated with the base by the drift pin. Therefore, a lateral hole for inserting the drift pin is formed on the side peripheral surface of the lower shaft, and the pin hole is processed in advance in the base at a position concentric with the lateral hole.

  The upper shaft is a circular metal bar protruding from the center of the upper surface of the plate, and is inserted into a positioning hole formed in the lower surface of the column. The positioning hole is also processed at the lumbering stage of the column, and the diameter thereof is the same as that of the upper shaft, and the length of the entire upper shaft is required to be inserted. Note that the upper shaft is merely inserted into the positioning hole and does not have a function of preventing the column from being pulled out.

  The lower shaft and the upper shaft do not need to be concentric in structure and may have different diameters. However, in consideration of cost etc., the actual product usually stabs a single shaft at the center of the plate and then integrates the shaft and the plate by welding, and one side becomes the upper shaft with the plate as a boundary. The other side becomes the lower shaft. Since the lower shaft has a horizontal hole, it is necessary to check the phase of the plate and the shaft during welding.

  The coach screw is used to integrate the fastening hardware and the pillar, and is screwed from the plate toward the lower surface of the pillar. Therefore, the plate is formed with a locking hole for inserting the coach screw. Of course, the locking hole has an inner diameter through which only the screw portion of the coach screw can pass, and the head cannot be inserted. In addition, the coach screw used in the present invention assumes that the outer diameter of the screw portion is about 12 mm at the maximum in consideration of workability, and there is a possibility that the strength cannot be ensured with only one. A plurality is formed at equal intervals. In an actual product, as many locking holes as possible are formed, and the number of coach screws to be used is adjusted according to an assumed pull-out load. In addition, in order to accommodate the head of the coach screw in the plate, as a rule, a counterbore hole is provided on the lower surface side of the locking hole.

  When installing the column using the product of the present invention, first insert the upper shaft into the positioning hole on the lower surface of the column, then screw the coach screw from the locking hole of the plate toward the column, and place the plate on the lower surface of the column. Adhere closely. Thereafter, the lower shaft is inserted into the fixing hole on the upper surface of the base, and the plate is placed on the upper surface of the base. Then, the drift pin is driven into the pin hole on the side surface of the base, and the base and the fastening hardware are integrated. In order to drive the drift pin, it is natural that care must be taken so that the pin hole in the base and the horizontal hole in the lower shaft are aligned concentrically.

  Thus, by integrating the base and the column via the fastening hardware, the drift pin, and the coach screw, it is not necessary to process a pin hole for driving the drift pin on the side surface of the column. Therefore, when a column placed in a Japanese-style room is installed using the product of the present invention, only the grain is developed on the side of the column, which is excellent in aesthetics.

  Since the plate is sandwiched between the upper surface of the base and the lower surface of the pillar, the side surface of the plate is exposed to the outside air even after construction. For this reason, depending on the use environment, condensation may occur on the side surface of the plate, and in the worst case, the foundation and the pillar may be corroded. In order to prevent such a situation, in the place where condensation is expected, the plate is shaped like a disk, and a hole is drilled in the upper surface of the foundation or the lower surface of the pillar, and the whole is embedded in the foundation or pillar. Take.

  As in the first aspect of the invention, the base and the pillar are formed by using a fastening hardware including a lower shaft inserted into the base, an upper shaft inserted into the pillar, and a plate having a locking hole through which the coach screw is inserted. By fastening, there is no need to process the pin hole for driving the drift pin on the side surface of the column. Therefore, if this fastener is used to install a Japanese-style pillar, there will be no foreign objects such as holes or pins on the side of the pillar, and only the grain will be visible when the pillar is viewed from the room, detracting from aesthetics. A natural atmosphere can be created without increasing the satisfaction of residents and visitors.

It is a perspective view which shows the structure of the fastening hardware by this invention, and its usage example. It is a perspective view of the state which integrated the base and pillar shown in FIG. It is the top view of the state of FIG. 2, and the longitudinal cross-sectional view of the center part. It is a perspective view which shows the structure and its usage example of the fastening hardware with a plate-shaped plate. It is the perspective view of the state which integrated the base and pillar shown in FIG. 4, and the longitudinal cross-sectional view of the center part. It is a perspective view which shows the example of a shape of the general fastening hardware used when installing a pillar on a base.

  FIG. 1 shows a configuration of a fastener 11 according to the present invention and an example of its use. The fastening hardware 11 is used to mount the pillar 33 to the base 32, and has a shape in which a shaft having a circular cross section is skewered at the center of the square plate 12, and the side protruding upward from the plate 12 is the upper shaft 14 and the lower side. The side protruding in the direction is referred to as the lower shaft 13. The plate 12 has the same size as the cross section of the pillar 33, and the plate 12 does not jump out from the side surface of the pillar 33 in a state where the pillar 33 is installed.

  A fixing hole 37 for inserting the lower shaft 13 is formed in the base 32. The fixing hole 37 is processed at the installation position of the pillar 33 based on the design drawing and penetrates to the lower surface of the base 32, and the diameter thereof is equal to that of the lower shaft 13. Therefore, when inserting, it is only necessary to tap the fastening hardware 11 with a pinch or the like, and no recutting is required, so that the work time is not prolonged. Further, the lower shaft 13 and the base 32 are integrated via the drift pin 21. The lower shaft 13 is formed with two horizontal holes 16 for inserting the drift pin 21 up and down, and a pin hole 36 that crosses the fixing hole 37 and reaches the opposite surface is formed on the side surface of the base 32. Two are processed at a predetermined position. When the drift pin 21 is driven after the lower shaft 13 is inserted into the base 32, the pin hole 36 and the lateral hole 16 are concentrically aligned. The pin hole 36 needs to have an inner diameter that allows the driven drift pin 21 to be held only by friction.

  A positioning hole 38 for inserting the upper shaft 14 is formed in the center of the lower surface of the column 33. The positioning hole 38 has a depth that allows the entire upper shaft 14 to be inserted, and has a diameter equal to that of the upper shaft 14. Therefore, like the lower shaft 13, the insertion work is not prolonged. The upper shaft 14 is only inserted into the pillar 33, and the pillar 33 can be easily pulled out in the state as it is.

  The fastening hardware 11 and the pillar 33 are integrated by the coach screw 22. The coach screw 22 is larger than a general wood screw, and a screw portion having an outer diameter of about 6 mm to 16 mm is widely used, and can usually be screwed without processing a pilot hole. In the present invention, in order to prevent the pillar 33 from being pulled out, it is necessary to use a plurality of screw portions having an outer diameter of about 10 mm, and the plate 12 has a locking hole through which the screw portion of the coach screw 22 can be inserted. Sixteen 17 are formed at equal intervals. Further, on the lower surface side of the plate 12, in order to accommodate the head of the coach screw 22, a counterbore hole 18 in which the inner diameter of the locking hole 17 is enlarged is formed (the fastening hardware 11 turned upside down in the upper right of the figure). reference). In addition, the coach screw 22 is inserted into all the locking holes 17 in principle, but in the case of the pillar 33 having a loose load condition, a part of the insertion may be omitted.

  The fastening hardware 11 according to the present invention cannot directly integrate the pillar 33 and the foundation concrete 31. However, the base 32 is integrated with the foundation concrete 31 via the anchor bolts 25, and the pillar 33 does not leave the foundation concrete 31. The anchor bolt 25 protrudes from the upper surface of the foundation concrete 31 and penetrates the foundation 32. When the large diameter washer 27 is inserted into the tip of the anchor bolt 25 and the nut 26 is tightened, the foundation 32 is integrated with the foundation concrete 31. To do.

  FIG. 2 shows a state in which the base 32 and the pillar 33 shown in FIG. 1 are integrated. The plate 12 is placed on the upper surface of the base 32, and the drift pin 21 is driven into the lower shaft 13, and the fastening hardware 11 is integrated with the base 32. Further, the upper shaft 14 is inserted into the positioning hole 38 of the column 33, and the coach screw 22 is screwed from the plate 12 toward the column 33, and the fastening hardware 11 is also integrated with the column 33. Thus, although the side surface of the plate 12 can be seen on the upper surface of the base 32, it is not necessary to drive a pin or the like on the side surface of the pillar 33, and only the grain is visible, and the pillar 33 is used for the Japanese-style room. Even in this case, the natural atmosphere is not impaired. At the time of construction, first, the plate 12 is brought into contact with the lower surface of the pillar 33 to screw the coach screw 22, and then the lower shaft 13 is inserted into the base 32 to drive the drift pin 21.

  FIG. 3 is a plan view of the state of FIG. 2 and a longitudinal sectional view of the central portion. The fixing hole 37 processed in the base 32 penetrates the upper and lower surfaces, and the lower shaft 13 inserted therein has a length substantially equal to the height of the base 32 in consideration of the insertion of the drift pin 21. It has become. Since the upper shaft 14 inserted into the positioning hole 38 of the column 33 is only required to be restrained so that the column 33 does not move in the horizontal direction, the upper shaft 14 is slightly shortened, and the positioning hole 38 has a depth corresponding thereto. The plate 12 is manufactured by cutting out a metal plate, and the lower shaft 13 and the upper shaft 14 are one metal round bar. The round bar is inserted into the plate 12 and both are integrated by welding. .

  The head of the coach screw 22 screwed into the column 33 from the plate 12 is accommodated in the counterbore hole 18 of the plate 12 and is not in contact with the base 32. Further, six coach screws 22 are used to ensure strength, and locking holes 17 for inserting these are formed at equal intervals. In addition, the base 32 is fixed to the upper surface of the foundation concrete 31 via the anchor bolts 25. The anchor bolt 25 protruding from the upper surface of the foundation concrete 31 is inserted into an anchor hole 35 formed in the base 32, and a nut 26 is screwed to the tip thereof. A washer 27 is interposed between the nut 26 and the base 32 in order to prevent the base 32 from being deformed by tightening the nut 26.

  FIG. 4 shows a configuration of the fastening hardware 11 in which the plate 12 has a disk shape and an example of its use. Although the plate 12 in FIG. 1 is square, it may be disk-shaped as shown in the figure. If the plate 12 is rectangular, the side surface of the plate 12 may be exposed at the boundary between the base 32 and the pillar 33 even after construction as shown in FIG. 2, and condensation may occur due to temperature changes. Therefore, if the plate 12 is shaped like a disk smaller than the cross section of the pillar 33 and the punching hole 39 for accommodating the plate 12 is processed on the lower surface of the pillar 33, the entire plate 12 can be embedded in the pillar 33. The punched hole 39 may be a rectangular cross section other than the circular cross section, but the circular cross section is optimal in consideration of processing, and the plate 12 requires a certain area because the coach screw 22 is inserted. The diameter is almost the same.

  FIG. 5 shows a state in which the base 32 and the pillar 33 shown in FIG. 4 are integrated, and a longitudinal section of the central portion thereof. In this way, the entire fastening hardware 11 including the plate 12 is embedded in the base 32 and the pillar 33 to prevent the occurrence of condensation. Although this form increases the labor for processing the punched holes 39, it exhibits excellent effects in places where the temperature changes drastically or in places where the humidity is chronically high, thereby improving the reliability of the building. By making the depth of the punched hole 39 and the thickness of the plate 12 coincide with each other, a part of the vertical load acting on the column 33 is transmitted to the base 32 through the plate 12.

11 Fastening metal 12 Plate 13 Lower shaft 14 Upper shaft 16 Horizontal hole 17 Locking hole 18 Counterbore hole 21 Drift pin 22 Coach screw 25 Anchor bolt 26 Nut 27 Washer 31 Foundation concrete 32 Base 33 Pillar 35 Anchor hole 36 Pin hole 37 Fixed Hole 38 Positioning hole 39 Hole

Claims (1)

A plate (12) sandwiched between the boundary of the base (32) and the pillar (33), and a lower shaft (13) protruding downward from the plate (12) and inserted into a fixing hole (37) on the upper surface of the base (32) And an upper shaft (14) protruding upward from the plate (12) and inserted into a positioning hole (38) on the lower surface of the column (33),
The lower shaft (13) has a horizontal hole (16) for inserting a drift pin (21) driven into the side surface of the base (32), and the plate (12) has a column (33). A fastening hardware comprising a plurality of locking holes (17) for inserting a coach screw (22) to be screwed into the lower surface of).

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