JP7839571B2 - Connecting hardware - Google Patents

Description

This invention relates to a connecting fitting.

In conventional wooden frame structures, various metal fittings were used for joining and fixing timbers together. These included fittings for fixing columns and beams to columns so that they were perpendicular to each other (see, for example, Patent Document 1).

Japanese Patent Publication No. 2001-164653

However, the connecting fitting described in Patent Document 1 had the problem that it could not be used as is when a beam had to be installed diagonally on a column.

Therefore, the present invention aims to provide a connecting fitting that allows the mounting angle between pieces of wood to be arbitrarily changed.

The joining fitting of the present invention is an interposed joining fitting between one to be joined and the other to be joined in a butt-to-butt position, comprising: a base attached to the one to be joined; a movable part attached to the other to be joined; and a rotating part that allows the movable part to rotate relative to the base, wherein the rotating part comprises a guide member provided on the base and a guided part provided on the movable part through which the guide member can be inserted , the guide member being formed by curving a rod-shaped body, and the guided part being a hole through which the guide member can be inserted .

The present invention provides a jointing device that allows for arbitrary changes in the mounting angle between pieces of wood.

This is a perspective view of the connecting fitting in the first embodiment of the present invention. The same as above, this is a front view of the connecting fitting. The same as above, this is a plan view of the connecting fitting. The same as above, this is a side view of the connecting fitting. The above is an exploded perspective view showing an embodiment using a connecting fitting. The above is a side view showing an embodiment using a connecting fitting. The above is a plan view showing the beam attached to the column perpendicularly using connecting hardware. The above is a plan view showing the beam attached to the column at an angle using connecting hardware. The above is an explanatory diagram showing the usage of wooden buildings using connecting metal fittings.

Preferred embodiments of the present invention will be described with reference to the accompanying drawings. Note that the embodiments described below do not limit the scope of the present invention as described in the claims. Furthermore, not all of the configurations described below are essential requirements of the present invention.

Figures 1 to 9 show Embodiment 1 of the present invention. As shown in Figure 1, the connecting fitting 1 of this embodiment comprises a base portion 2, a movable portion 3, and a rotating portion 4 that allows the movable portion 3 to rotate relative to the base portion 2. In this embodiment, the top, bottom, left, and right directions in Figure 2 refer to the top, bottom, left, and right of the connecting fitting 1.

The base portion 2 comprises a base body 5 formed from a rectangular metal plate, a guide portion 6, and a bent portion 7 formed by vertically bending the lower end of the base body 5.

On both the left and right sides of the base body 5, multiple mounting holes 8 are formed in a vertical row. These mounting holes 8 are formed on a recessed area 8A, created by embossing or the like, that protrudes in a roughly semi-spherical shape from one surface 5A to the other surface 5B of the base body 5. Regarding the relationship between the mounting holes 8 and the recessed area 8A, the recessed area 8A may be formed where the mounting holes 8 are located, or conversely, the mounting holes 8 may be formed where the recessed area 8A is located.

Multiple positioning holes 9 are formed in a vertical row in the center of the base body 5. The diameter of the positioning holes 9 is larger than the diameter of the mounting holes 8. Furthermore, the positioning holes 9 are formed in a burring shape, with cylindrical portions 9A protruding from one surface 5A toward the opposite surface 5B of the base body 5. The cylindrical portions 9A can be used as positioning guides.

In this embodiment, the rows of mounting holes 8 and the rows of positioning holes 9 are formed parallel to each other in the vertical direction, with the row of positioning holes 9 positioned midway between the right-hand row of mounting holes 8 and the left-hand row of mounting holes 8.

In the right-hand row of mounting holes 8, the spacing between each mounting hole 8 is uneven and they are not arranged in a straight line; the same applies to the left-hand row of mounting holes 8.

The guide section 6 consists of a pair of upper and lower metal rods formed in a semi-circular curve. Note that the guide section 6 may also be made of plate material or square material instead of round rods.

The right end of the upper guide portion 6A is fixed to the base body 5 by welding or the like, midway between the right-side row of mounting holes 8 and the right-side row of positioning holes 9, and above the row of mounting holes 8 and the positioning holes 9. The left end of the upper guide portion 6A is fixed to the base body 5 by welding or the like, midway between the left-side row of mounting holes 8 and the left-side row of positioning holes 9, and above the row of mounting holes 8 and the positioning holes 9.

The right end of the lower guide portion 6B is fixed to the base body 5 by welding or the like, midway between the right-side row of mounting holes 8 and the right-side row of positioning holes 9, and below the row of mounting holes 8 and the positioning holes 9. The left end of the lower guide portion 6B is fixed to the base body 5 by welding or the like, midway between the left-side row of mounting holes 8 and the left-side row of positioning holes 9, and below the row of mounting holes 8 and the positioning holes 9.

The planar shape of the bending portion 7 is formed as a rectangle that sufficiently accommodates the vertical projected area (semi-ring shape) of the guide portion 6. The planar shape and size of the bending portion 7 are not limited to the shape described above. Furthermore, as shown in Figures 2 and 4, the bending portion 7 has a clearance C between it and the movable portion 3.

The movable part 3 is formed from a rectangular metal plate. The base end of the movable part 3, which is the attachment point to the base 2, has through-holes 10A and 10B, respectively, through which guide parts 6A and 6B can be inserted. The movable part 3 is rotatably attached to the base 2 with the guide parts 6A and 6B inserted through the through-holes 10A and 10B. Since the movable part 3 is spaced apart from the positioning holes 9 and mounting holes 8 of the base body 5, it does not interfere with positioning work at the positioning holes 9 or mounting work at the mounting holes 8.

The tip end of the movable part 3, opposite to its base end, is provided with a notched locking groove 11 with an open top and multiple mounting holes 12 for positioning.

Furthermore, the center of the movable part 3 is provided with a cutout section 13 that avoids the through-holes 10A and 10B, the locking groove 11, and the mounting hole 12. This design intentionally reduces the weight and strength of the movable part 3 to prevent the wood from cracking, as described later.

The rotating section 3 consists of guide sections 6A and 6B and through sections 10A and 10B.

The method of using the connecting fitting 1 described above is as follows: First, the base 2 is temporarily fixed to one of the wooden pieces, the column 14, using the positioning hole 9. After adjusting the mounting position of the base 2, the base 2 is fixed to the column with screws 15 using the mounting hole 8.

Next, the method for fixing the beam 16, which is the other piece of timber, to the column 14 will be explained. A vertical insertion groove 17 is pre-installed in the center of the tip of the beam 16, penetrating it vertically. A positioning and fixing member 18, consisting of a pin or bolt perpendicular to the insertion groove 17, is press-fitted into the tip of the beam 16.

When the fitting groove 17 of the beam 16 is inserted into the movable part 3 of the connecting fitting 1 from above, the positioning and fixing member 18 of the beam 16 is guided into the locking groove 11 of the movable part 3. At this time, the positioning and fixing member 18 is smoothly drawn into the fitting groove 17 along the inclination of the locking groove 11. In this way, the beam 16 to be erected on the column 14 is temporarily fixed by the engagement of the positioning and fixing member 18 inserted into the fitting groove 17 and the locking groove 11 of the movable part 3. The column 14 and the beam 16 are then connected via the connecting fitting 1 by inserting the fixing member 19, which consists of a pin or bolt driven into the beam 16, into the mounting hole 12.

In this case, the beam 16, which is fixed to the column 14 by the connecting fitting 1, is rotatably connected to the column 14 by the rotating part 3, and the angle of the beam 16 can be arbitrarily changed within a predetermined range, as shown in Figures 7 and 8.

In this embodiment, the column 14 and the beam 16, which is installed diagonally to the column 14, can be fixed to each other by a single fixing bracket 1.

Furthermore, since the beam 16 is rotatably connected to the column 14 by the rotating part 3, the angle of the beam 16 can be arbitrarily changed to match the shape of the site.

Furthermore, as shown in Figure 7, the connecting fitting 1 of this embodiment can also be used to fix a beam 16 perpendicular to a standard column 14.

The structure of the connecting fitting 1 is relatively simple and robust, with the base 2 and movable part 3 connected by a rotating part 4. Therefore, it is easy to manufacture, inexpensive, and also offers stable rotational movement.

Furthermore, as shown in Figure 5, by pre-forming a recess 14A in the column 14 into which the cylindrical portion 9A can engage, and engaging the cylindrical portion 9A with the recess 14 during positioning as shown in Figure 6, the cylindrical portion 9A can be used as a guide for insertion during positioning, thereby simplifying the positioning of the connecting fitting 1.

Furthermore, by providing a clearance C between the movable part 3 and the bent piece 7, even if the movable part 3 is lowered due to the weight of the beam 16, as shown in Figure 6, the bent piece 7 does not obstruct the movement of the movable part 3.

Furthermore, as shown in Figures 7 and 8, by pre-forming a recess 16A in the beam 16 into which the bent portion 7 can engage, and engaging the bent portion 7 with the recess 16A during positioning, the bent portion 7 can be used as a guide for insertion during positioning, thereby simplifying the positioning of the connecting fitting 1.

As described above, in this embodiment, the joining fitting 1 interposed between the two pieces of wood 14 and 16 is used to join one piece of wood to the other piece of wood in a butt-jointed state. The fitting comprises a base portion 2 attached to the column 14 (one of the pieces of wood), a movable portion 3 attached to the beam 16 (the other piece of wood), and a rotating portion 4 that allows the movable portion 3 to rotate relative to the base portion 2. The rotating portion 4 includes a guide member 6 provided on the base portion 2 and a through-hole 10 on the movable portion 3, which serves as a guided portion through which the guide member 6 can be inserted. Because the beam 16 is rotatably connected to the column 14 by the rotating portion 4, the angle of the beam 16 can be arbitrarily changed to match the shape of the site.

Furthermore, in this embodiment, the guide member 6 is formed by curving a round rod-shaped body.
The through-hole 10, which is the guided portion, is a round hole through which the guide member 6 can be inserted, making it easy to manufacture, inexpensive, and also providing stability in rotational movement.

Furthermore, in this embodiment, the movable part 3 is provided separated from the base part 2 via the rotating part 4, so that the movable part 3 does not interfere with the positioning work at the positioning hole 9 or the mounting work at the mounting hole 8.

Furthermore, in this embodiment, the base portion 2 is provided with mounting holes 8, and since the mounting holes 8 are formed on the recessed portion 8A which serves as a mounting projection, the shear stress near the mounting holes 8 is improved, thereby improving the strength of the base portion body 5.

Furthermore, in this embodiment, the base portion 2 is provided with a positioning hole 9, and by forming the positioning hole 9 in the cylindrical portion 9A which serves as a positioning projection, the positioning of the connecting fitting 1 can be simplified.

Furthermore, in this embodiment, the base portion 2 is equipped with a bent portion 7, and a gap C is provided between the movable portion 3 and the bent portion 7. This allows the joint fitting 1 to be positioned without hindering the operation of the movable portion 3.

The present invention is not limited to the above embodiments, and various modifications are possible within the scope of the gist of the invention. For example, the connecting fitting of the present invention may be used to connect columns or beams. Furthermore, the connecting fitting may be used with its rotating part rotated in a direction other than horizontal. Also, the materials to be joined are not limited to wood, but may be made of metal, resin, or the like.

1. Connecting fitting 2. Base 3. Movable part 4. Rotating part 6. Guide member 7. Bent piece 8. Mounting hole 8A. Concave/concave part (mounting protrusion)
9. Positioning hole 9A: Cylindrical portion (positioning projection)
10 Penetration section (guided section)
14. Column (one of the joined members)
16. Beam (the other member to be joined)
C Clearance (spacing)

Claims (4)

A joining fitting interposed between one member to be joined and the other member to be joined so that the other member to be joined is butted against the other member,
A base attached to one of the materials to be joined,
A movable part attached to the other member to be joined,
It comprises a rotating part that allows the movable part to rotate relative to the base,
The aforementioned rotating part is,
The base portion includes a guide member,
The movable part is provided with a guided portion through which the guide member can be inserted ,
The guide member is formed by curving a rod-shaped body.
The connecting fitting is characterized in that the guided portion has a hole through which the guide member can be inserted . The connecting fitting according to claim 1, characterized in that the movable part is provided in a state separated from the base via the rotating part. The base portion is provided with mounting holes.
The connecting fitting according to claim 1, characterized in that the mounting hole is formed in the mounting projection. The base portion is provided with positioning holes for positioning,
The connecting fitting according to claim 1, characterized in that the positioning hole is formed in the positioning projection.